Answer: 123
Step-by-step explanation:
1) Solve for Side A.
2) Solve for Angle B.
Answer:
solution given;
let
AB=a
AC=b=30ft
AB=c=20ft
<A=115°
By using Cosine rule.
a²=b²+c²-2bc cos angle
a²=30²+20²-2*30*20 Cos 115°
a²=1807.1419
a=√[1807.1419]
a=42.51
Side A is 42.51ft.
Again
Cos B=\( \frac{a²+c²-b²}{2ac} \)
Cos B=\( \frac{42.51²+20²-30²}{2*42.51*20} \)
Cos B=0.7687
<B=Cos -¹(0.7687)
<B=39.46°
Angle B is 39.46
___________________________________
To find \( \tt{\overline{A}}\)Given that:\(\quad\quad\quad\quad\tt{ \angle{A = 115° }}\)
Using cosine rule:\( \tt{\overline{A}²=b²+c²-2bc \cos( \angle{a}) }\)
\( \tt{\overline{A}²=(30)²+(20)²-2(30)(20) \cos( \angle{115°}) }\)
\( \tt{\overline{A}²=900+400-2(600) \cos( \angle{115°}) }\)
\( \tt{\overline{A}²=1300-1200 \cos( \angle{115°}) }\)
\( \tt{\overline{A} ²=1807.1419}\)
\( \tt{\overline{A}= \sqrt{ 1807.1419}}\)
\( \pink {\boxed{ \tt{ \overline{A}=42.51}}}\)
Now, to find \(\tt{ \angle{B}}\)\( \tt{ cos\;B = \frac{ {a}^{2} + {c}^{2} - {b}^{2} }{2ac} }\)
\( \tt{ cos\:B = \frac{ {42.51}^{2} + {20}^{2} - {30}^{2} }{2(42.51)(20)} }\)
\( \tt{ cos\:B = 0.7687}\)
\( \tt{ \angle{B} = { \cos}^{ - 1} (0.7687)}\)
\(\pink{\boxed{\tt{ \angle{B} = {39.46°}}}}\)
___________________________________
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✍︎ C.Rose❀
0 is an angle in a right-angled triangle. tan 0 = 23/52 What is the value of 0? Give your answer in degrees to 1 d.p.
The value of the angle θ is approximately 24.2 degrees to 1 decimal place.
In a right-angled triangle, the tangent of an angle is defined as the ratio of the length of the side opposite the angle to the length of the side adjacent to the angle. Given that tan θ = 23/52, we can find the value of the angle θ.
To find the value of θ, we can use the inverse tangent or arctan function. Taking the inverse tangent of both sides of the equation, we have:
θ = arctan(23/52)
Using a calculator or trigonometric tables, we can evaluate the inverse tangent of 23/52. The result is approximately 24.2 degrees.
Note that in the context of a right-angled triangle, the tangent function is defined for acute angles (less than 90 degrees). Since 0 degrees is the smallest possible angle, it is considered an acute angle in this case.
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Mrs. Drew wants to build a square sandbox with an area of 256 square feet. What is the total length of wood Mrs. Drew needs to make the sides of the sandbox?
Answer:
64 ft
Step-by-step explanation:
square root of 256 is 16. so each side is 16 ft. 16*4=64
The total length of wood is 16 feet
What is area of square?Area of a Square = Side × Side.
Therefore, the area of square = Side2 square units.
Given:
Area of square = 256 square feet
Now,
Area of square = 4*side
256 = side * side
side ²= 256
side = √256
side =16
Hence, the length of wood is 16 feet.
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30 POINTS!!!!!!!
PLEASE HELP ASAP!!!!!
PLEASEEEE
A surveyor wants to determine the width of a river. She surveys the area and finds the following measures below. She uses a pair of similar triangles, to help her find the answer.
The width of the river is 43.3 m.
Given that a scene in which we need to find the width of the river,
The surveyor looks around and discovers the specified measurements. In order to obtain the solution, she used a pair of similar triangles.
Using the definition of similar triangles,
Similar triangles are geometric figures that have the same shape but not necessarily the same size.
They have corresponding angles that are congruent and corresponding sides that are proportional.
So,
AB / DE = AC / CD
AB / 18.6 = 79.6 / 34.2
AB = 43.3
Hence the width of the river is 43.3 m.
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7.38
5. Mr. Crossley is building a new dog house for Chester.
He starts with a piece of wood that is 8 feet long. How
many pieces of woods can he cut if he needs each piece
to be 2 feet?
Answer:
4 Pieces
Step-by-step explanation:
8 ÷ 2 = 4
Answer:
Step-by-step explanation:
Hello there!
He has 8 ft of wood, and he needs each peice to be 2 ft long. To solve this, we divide 8 ft by 2 ft (this will determine how many 2 ft peices can be cut from 8 ft). 8 ÷ 2 = 4, so this means he can cut four peices of wood to build the doghouse for Chester!
I hope this answer helped you! If it did, please rate it and give it a Thanks!
Have a wonderful day!
.54 oz of premium walnuts costs $12.95. what is cost per ounce
The cost per ounce of the premium walnut is $0. 23
What is proportion?To determine the value of the cost, we need to note that proportion is simply described as the comparison of numbers such that they are made equal to another.
From the information given, we have that;
54 ounces of premium walnuts costs $12.95
This is represented as;
54 ounces = $12. 95
Then 1 = x
cross multiply the values, we get;
x = $12.95/54
Divide the values, we get;
x = $0. 23
Hence, the value is $0. 23 per premium walnut
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Write an equivalent fraction with a denominator of 10
1/2 = ?/10
Answer:
5/10
Step-by-step explanation:
An equivalent fraction will have the numerator and denominator multiplied by the same value.
ApplicationThe denominator of 2 must be multiplied by 5 to get a denominator of 10. Then the equivalent fraction is ...
\(\dfrac{1}{2}=\dfrac{1}{2}\cdot\dfrac{5}{5}=\dfrac{1\cdot5}{2\cdot5}=\boxed{\dfrac{5}{10}}\)
What is the value of the rational expression below when x is equal to 4?
x-12
X-8
O A. -2
о B. 8
о C. 2
OD. -8
The value of the rational expression when x is equal to 4 is 2. The correct answer is option C: 2.
To find the value of the rational expression (x - 12)/(x - 8) when x is equal to 4, we substitute x = 4 into the expression:
[(4) - 12]/[(4) - 8]
Simplifying the numerator and denominator:
(4 - 12)/(-4)
Further simplifying the numerator:
(-8)/(-4)
Now, we can divide -8 by -4:
(-8)/(-4) = 2
So, when x is equal to 4, the value of the rational expression is 2.
Therefore, C is the right response.
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Do you get the rate of change of 260 feet per minute if you use nonconsecutive rows of the rows of the table? Explain.
When the relation between two variables is a linear relation, the rate of change between any two pairs of values for those two variables is the same. That is why we get the same answer no matter if we use consecutive rows from the table or not.
NO LINKS!! URGENT HELP PLEASE!!!
NOT MULTIPLE CHOICE!!
8. a. Finish the table
b. Name the type of sequence
c. Find the equation for the following sequence
Answer:
7: 63
8: 73
arithmetic sequence
y = 10x - 7
or f(n) = 10x -7
or
\(a_{n}\) = 3 + (n-1)10
Step-by-step explanation:
the output increases by 10 every time that the input increases by 1. That gives us our common difference or slope. The y intercept is -7. That is the value is you worked backwards until you get to n = 0. The initial value is 3. That is when n is 1.
When n is 3, f(n) is 23
When n is 2, f(n) is 13
When n is 1, f(n) is 3
When n is 0, f(n) is -7
I am not sure if this is clear. I am assuming that you have a lot of knowledge of linear equations and how to write arithmetic sequence. If my explanation is confusing it is me and not you.
Answer:
a. 63,73
b. Arithmetic sequence
c.t(n)=10n-7
Explanation:
a. Here is the completed table:
n | t(n)
4 | 33
5 | 43
6 | 53
7 | 63
8 | 73
b.
The type of sequence is arithmetic.
An arithmetic sequence is a sequence of numbers where the difference between any two consecutive terms is constant.
In this case, the difference between any two consecutive terms is 10.
c.
The equation for the arithmetic sequence is:
t(n)=a+(n-1)d
where:
t(n) is the nth term in the sequencen is the term numberd is the common differencea is the first termFor Question:
d=43-33=10a=?Now
equation becomes:
t(4) = a+(4-1)10
33=a+30
a=33-30
a=3
Now, the Equation becomes
t(n) = 3+(n-1)10
t(n) = 3+10n-10
t(n)=10n-7
Question 6 (5 points)
TD
What is the distance between point C and point D?
A) 185 units
O
B) 12 units
C) 17 units
D) 13 units
Answer:
C
Step-by-step explanation:
Answer:13
Step-by-step explanation:
Martinez Inc. had pretax financial income of $161,000 in 2020. Included in the computation of that amount is insurance expense of $3,2600 which is not deductible for tax purposes. In addition, depreciation for tax purposes exceeds accounting depreciation by $9,900. Prepare Martinez's Journal entry to record 2020 taxes, assuming a tax rate of 25%. (Credit account titles are automatically indented when amount is entered. Do not indent manually. If no entry is required, select "No Entry" for the account titles and enter for the amounts.) Debat Credit Account Titles and Explanation
A company's income tax liability is referred to as "deferred tax liability" when it is not paid in full during the fiscal year. This record is accounted for on the accounting report of the organization as an obligation.
Taxable income is the sum of the following: pre-tax financial income, insurance costs, depreciation, and 154,000 dollars. Taxable income is $148,000.
A Deferred Tax Obligation: What Is It?A listing on a company's balance sheet known as a "deferred tax liability" records taxes that are owed but will not be paid until a later date.
Is deferred tax a resource or a cost?It varies. There are two kinds of deferred tax items: a liability and an asset. The first one is the money that the company owes (the deferred tax liability), and the second one is the money that the company is owed (the deferred tax asset).
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Hey I need help I got stuck I am struggling
According to the trigonometric relations in a right triangle, the following relation is valid:
\(\begin{gathered} \sin x\degree=\frac{\text{opposite leg}}{hypotenuse}=\frac{4.9}{7.5} \\ \sin x\degree=0.6533\ldots \\ x\degree=\arcsin 0.6533\ldots \\ x\degree\approx40.8\degree \end{gathered}\)Question 2: Leilamade a one-time investment of $12 000.00 in a
registered retirement savings plan (RRSP) at 2.65%, compounded
semi-annually. She plans to withdraw the money when she retires in 30
years.
a) Determine the value of the investment when she retires. Show your
work.
I
b) Calculate the rate of return [note:] over the 30 years. Show your work.
the value of the investment when she retires is $26434.92.
What is the compound interest?Compound interest is when you earn interest on both the money you've saved and the interest you earn.
Formula:
A = P(1 + {r}/{n})^{n.t}
A = final amount
P = initial principal balance
r = interest rate
n = number of times interest applied per time period
t = number of time periods elapsed
here, we have,
given that,
Leilamade a one-time investment of $12 000.00 in a
registered retirement savings plan (RRSP) at 2.65%, compounded
semi-annually.
She plans to withdraw the money when she retires in 30
years.
So, she get finally is,
using the formula we get,
$26434.92
hence, the value of the investment when she retires is $26434.92.
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find the slope of the line that passes through (-3,-4) and (7,6)?
A.undefined
B.-1
C.0
D.1
Answer:
The answer is D.
Step-by-step explanation:
Calculate the price of a zero-coupon bond that matures in five years if the market interest rate is 7.50 percent. (Assume semiannual
compounding and $1,000 par value.)
Multiple Choice
Based on the information given, the price of the zero coupon bond is $692.04.
How to solveTo calculate the price of a zero coupon bond, we need to use the following formula:
\(\sf P =\dfrac{F}{1+r\div n}^{(nt)\)
Where:
P = price of the bondF = face value of the bondr = annual interest raten = number of compounding periods per yeart = time to maturity in yearsAlso, the annual interest rate is 7.50%, which is the market interest rate, and the compounding is semiannual, which means n = 2. Finally, the time to maturity is 5 years.
Plugging in the values into the formula, we get:
\(\sf P = \dfrac{1000}{(1+0.075\div2)^{(2\times5)}}\)
\(\sf P = \dfrac{1000}{(1.0375)^{10}}\)
\(\sf P = \dfrac{1000}{1.4450}\)
\(\sf P = \$692.04 \ \ (rounded \ to \ the \ nearest \ cent)\)
Therefore, the price of the zero coupon bond is $692.04.
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select the correct answer. what is the value of t=1?
a. 7/2
b. 7/8
c. 8
d. 7
Answer:
B
NNzbbxhsnjajajbajajajajakakkakajabsbd
Match the metric units on the left with their
approximate equivalents on the right. Not all the
options on the right will be used.
1 meter
kilogram
1 liter
1 cup
I mile
2
pounds
1 quart
I yard
Answer:
meter - yard
kilogram - 2 pounds
liter - quart
Given below are lease terms at the local dealership. What is the total cash
due at signing?
Terms:
• Length of lease = 18 months
• MSRP of the car = $22,750
• Purchase value of the car after lease = $16,900
• Down payment = $1800
• Monthly payment = $425
• Security deposit = $400
• Acquisition fee = $300
The total cash due at signing is $3,700 at the local dealership..
What is the addition operation?The addition operation in mathematics adds values on each side of the operator.
For example 4 + 2 = 6
The total cash due is calculated as:
Down payment: $1,800
Security deposit: $400
Acquisition fee: $300
Total: $1,800 + $400 + $300
Apply the addition operation, and we get
= $3,700
Thus, the total cash due at signing is $3,700.
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How many inches does the tip of the minute hand travel?
ANSWER:
15.71 inches
STEP-BY-STEP EXPLANATION:
Given:
Radius: 6 inches
Angle: 150°
We are asked to calculate the length of the long run. We can calculate this distance by multiplying the ratio of the angles by the circumference, just like this:
\(\begin{gathered} \text{arc }=\frac{2\pi\cdot r\cdot\theta}{360\degree} \\ \text{ we replacing} \\ \text{arc }=\frac{2\cdot3.1415\cdot6\cdot150\degree}{360\degree} \\ \text{arc }=15.7075\cong15.71\text{ in} \end{gathered}\)The distance traveled is 15.71 inches
A computer generates 75 integers from 1 to 8 at random. The results are recorded in this table. Outcome 1 2 3 4 5 6 7 8 Number of times outcome occurred 12 16 9 12 4 7 5 10 What is the experimental probability of the computer generating a 3 or a 4? Responses 9% 9% 15% 15% 21% 21% 28%
The experimental probability of the computer generating a 3 or a 4 will be 28%.
Experimental probability can be found in the probability of some event from the results of experiments.
For an event E, we get the experimental probability of that event;
\(P_e(E) = \dfrac{\text{Number of times E occurred}}{\text{Number of times experiments was done}}\)
We are given that a computer generates 75 integers from 1 to 8 at random. The results are recorded in this table.
Outcome;
1 2 3 4 5 6 7 8
Number of times outcome occurred;
12 16 9 12 4 7 5 10
Therefore,
P_e(E) = 9 + 12 /2
P_e(E) =28%
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Answer:28%
Step-by-step explanation:
i took the quiz<33
a man gets a job with a salary of 40000 dollars a year. he is promised a 2090 dollars raise each subsequent year. his total earning for a 8-year period is dollars.
Total earnings for an 8-year period is - 378520 dollars.
The salaries, year by year, can be written in a sequence
40000, 40000 + 2090 , 40000 + 2(2090)......
which is an arithmetic sequence, with
a=40,000 , d=2090
and the general term
\(a_{n}\) = 40000 + 2090 (n - 1)
gives the salary at the beginning of year n.
Recall that for the arithmetic sequence,
\(a_{n}\) = \(a + (n - 1 )d\)
the nth partial sum is given by either of the equivalent formulas:
\(S_{n} = \frac{n}{2} [2a + (n - 1 )d ]\)
we find \(S_{8}\) = the sum of the first 8 salaries:
\(S_{n} = \frac{8}{2} [2. 40000 + (8 - 1 )2090 ]\)
= 4 [ 80000 + 7 × 2090 ]
= 4 [ 80000 ++ 14630 ]
= 4 × 94630
= 378520
So, total earnings for an 8-year period is - 378520 dollars.
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Bob goes on a hike and walks at a pace of 2 1/2 miles per hour. Which rates are equivalent to 2 1/2 miles per hour? Select ALL that apply.
Answer:
Step-by-step explanation: !!DISCLAIMER IM NOT ALWAYS THE SMARTEST BUT IM PRETTY SURE THIS IS RIGHT!
!well what I did. You know that 60 minutes=one hour. So I put 2 & 1/2 over 60.
Make 2 & 1/2 a improper fraction=5/2.
So 5/2 over 60
Then divide. 5/2 divided by 60 ( which is 60/1)
Then leave change flip, meaning leave the 5/2 change the division sign to multiplication, and flip, which you would flip 60/1 to 1/60
So we have 5/2 times 1/60. Multiply across. 5 times 1= 5. 2 times 60=120
So we have 5/120
Now we simplify 120 divided by 5 = 24. And 5 divided by 5 = 1
So 1/24
That’s all I know.. I know it didn’t have the answers but I hoped it help a bit
Find the side length of a cube with a volume of 141 f3 If necessary, round your answer to the nearest tenth.
The side length of the cube is 5.6 feet (rounded to the nearest tenth).
We can calculate the side length of a cube with a volume of 141 cubic feet using the formula for cube volume , which is \(V = s^3\), where V is the volume and s is the side length.
We can calculate s by taking the cube root of both sides of the equation:
\(s = (V)^{(1/3)\)
Substituting V = 141, we get:
\(s = (141)^{(1/3)\)
By using a calculator to evaluate this expression, we may determine:
s ≈ 5.6
As a result, the cube's side length is roughly 5.6 feet (rounded to the closest tenth). This indicates that if we increase the side length by three, it will become longer. (\(s^3\)), we will get the volume of the cube, which is 141 cubic feet.
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Select the best answer. In preparing to construct a one-sample t interval for a population mean, suppose we are not sure if the population distribution is Normal. In which of the following circumstances would we not be safe constructing the interval based on an SRS of size 24 from the population? (a) A stemplot of the data is roughly bell-shaped. (b) A histogram of the data shows slight skewness. (c) A boxplot of the data has a large outlier. (d) The sample standard deviation is large. (e) A Normal probability plot of the data is fairly linear.
In preparing to construct a one-sample t interval for a population mean, suppose we are not sure if the population distribution is Normal. In option (c) A boxplot of the data has a large outlier, we would not be safe constructing the interval based on an SRS of size 24 from the population.
What is a sample?
A sample is characterised as a more manageable and compact version of a bigger group. A smaller population that possesses the traits of a bigger group. When the population size is too big to include all participants or observations in the test, a sample is utilised in statistical analysis.
Constructing a one-sample t interval for a population mean is generally safe when the population is not Normal, as long as the sample size is large enough (usually at least 30) or the sample is taken from a population that is not too skewed or has outliers.
Therefore, options (a), (b), and (e) suggest that the sample may come from a population that is roughly Normal or can be transformed to be Normal, and so constructing the interval based on an SRS of size 24 would be safe.
Option (d) suggests that the sample standard deviation is large, but this does not necessarily mean that constructing the interval would not be safe.
It may reduce the precision of the interval, but as long as the sample size is sufficient, the interval can still be constructed.
Option (c) suggests that the sample has a large outlier, which may significantly affect the distribution of the sample and the calculation of the interval.
Therefore, in this circumstance, constructing the interval based on an SRS of size 24 would not be safe.
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Which expression has a value closest to ? (Use as the value of .)
A.
B.
C.
D.
The product of x and y increased by 2
Answer:
x*y+2
Step-by-step explanation:
3. x² - 6x +9=0 3.1 How many roots are in the equation?
The number of roots in the equation x² - 6x + 9 = 0 is two, ( x = 3 ) double roots.
How many roots are in the given equation?A quadratic equation in its standard form is expressed as;
ax² + bx + c = 0
Where x is the unknown
To solve for x, we use the quadratic formula
x = (-b±√(b² - 4ac)) / (2a)
Given the quadratic equation in the question;
x² - 6x + 9 = 0
Compared to the standard form ax² + bx + c = 0
a = 1b = -6c = 9Plug a, b and c into the quadratic formula and solve for x.
x = ( -(-6) ±√((-6)² - 4×1×9 )) / (2×1)
x = ( 6 ±√(36 - 36 )) / (2×1)
x = ( 6 ±√(0 )) / (2)
x = ( 6 ± 0 )/ 2
x = (6-0/)2, x = (6+0)/2
x = 6/2, x = 6/2
x = 3, x = 3.
Therefore, the value of x is 3 ( double root ).
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Find dy/dx if y= (x²-3)³cos2x
Answer:
dy/dx = 6x(x²-3)cos2x - 2(x²-3)³sin2x
Step-by-step explanation:
We use the Product Rule:
y= (x²-3)³cos2x
dy/dx = (x²-3)³ d(cos2x)/dx + cos2x * d ((x²-3)³)/dx
= (x²-3)³ * -2sin2x + cos2x * 3(x²-3)*2x
= -2sin2x*(x²-3)³ + 6xcos2x*(x²-3)
= 6x(x²-3)cos2x - 2(x²-3)³sin2x
A real-estate agent conducted an experiment to test the effect of selling a staged home vs. selling an empty home. To do so, the agent obtained a list of 10 comparable homes just listed for sale that were currently empty. He randomly assigned 5 of the homes to be "staged,” meaning filled with nice furniture and decorated. The owners of the 5 homes all agreed to have their homes staged by professional decorators. The other 5 homes remained empty. The hypothesis is that empty homes are not as appealing to buyers as staged homes and, therefore, sell for lower prices than staged homes. The mean selling price of the 5 empty homes was $150,000 with a standard deviation of $22,000. The mean selling price of the five staged homes was $175,000 with a standard deviation of 35,000. A dotplot of each sample shows no strong skewness and no outliers.
The agent tests H0: μ1 – μ2 = 0, Ha: μ1 – μ2 < 0, where μ1 = the true mean selling price of all comparable empty homes and μ2 = the true mean selling price of all comparable staged homes. Are the conditions for inference met for carrying out a t-test for a difference in means?
No, the random condition is not met.
No, the 10% condition is not met.
No, the Normal/large sample condition is not met.
Yes, all of the conditions for inference have been met.
Yes, all of the conditions for inference have been met to carry out a t-test for a difference in means.
Three main conditions need to be satisfied: the random condition, the 10% condition, and the Normal/large sample condition.
The random condition is met because the real-estate agent randomly assigned the homes to be staged or empty. This ensures that the sample is representative of the population of comparable homes.
The 10% condition is met because the agent selected 10 comparable homes, and the sample of 5 staged and 5 empty homes represents less than 10% of the population of comparable homes.
The Normal/large sample condition is met because the dot plot of each sample shows no strong skewness and no outliers. Additionally, with a sample size of 5 for each group, the t-test can still be valid even if the population distributions are not exactly normal.
Therefore, all the conditions for inference have been met, allowing the real-estate agent to carry out a t-test for a difference in means and test the hypothesis regarding the selling prices of staged and empty homes.
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