Answer:
a = 3, b = -4
Step-by-step explanation:
You need to combine like terms in the expression. In the end, you get 3 - 4i. That's in the form of a + bi. So a = 3 and b = -4
Thank you for taking the time out of your day to help me. Appreciate it.
Answer:
calculator gave me 6.5732
Step-by-step explanation:
Which set of data is represented by the box plot?
Answer:
Step-by-step explanation:
It looks like the solution is the first set of data
{1, 4, 6, 10, 12, 14, 19, 20, 25 }
because: median is 12, Q1 is 6, Q3 is 19, yet the range is from 1 to 25 while the range of the box and whisker plot is 1 to 24.
So theoretically none of those sets represents the box plot.
If x=3 and y=7, evaluate the following expression: 100 − 3 ( 3 − 4x )
Answer:
\(100 - 3(3 - 4x) \\ = 100 - 3(3 - 4 \times 3) \\ = 100 -27 \\ = 73\)
Answer:
873
Step-by-step explanation:
100 - 3 ( 3- 4x ) 97 ( 3 - 4×3 )97 (3 - 12 ) 97 × 9 873Assume a bank loan requires an interest payment of $85 per year and a principal payment of $1,000 at the end of the loan's eight-year life. What would be the present value of this loan if it carried a 10% interest rate?
Answer:
The present value is \(PV = \$ 396,987\)
Step-by-step explanation:
From the question we are told that
The interest payment per year is \(C = \$ 85\)
The principal payment is \(P = \$ 1000\)
The duration is n = 8 years
The interest rate is \(r = 10\% = 0.10\)
The present value is mathematically represented as
\(PV = [ \frac{C}{r} * [1 - \frac{1 }{ (1 +r)^n} ] + \frac{P}{(1 + r)^n} ]\)
substituting values
\(PV = [ \frac{85}{0.10} * [1 - \frac{1 }{ (1 +0.10)^8} ] + \frac{1000}{(1 + 0.10)^ 8} ]\)
\(PV = \$ 396,987\)
Are the angles congruent If yes, how do you know?
From the given diagram, notice that DE is congruent to AB, EC is congruent to BC and the angles ABC and DEC are congruent.
Since two sides of the triangles and the included angle are congruent, we know from the SAS congruence theorem that ABC and DEC are congruent.
Therefore, the answer is: yes, the triangles ABC and DEF are congruent due to the SAS theorem.
If angle 1 has a measurement of x and angle 2 has a measurement of 3x what does x equal what are the true measurements of angle 1 and 2
x=45°
angle 1=45°
angle 2= 135°
ps are you sure you've written the question properly??
How many cups of potatoes are needed if 1 cup of diced ham is used?
Answer:
i think 7 but i am not 100% sure
Step-by-step explanation:
sal wants to save more than $50. He starts with $10 and saves $2.50 each week
I want to know this problem as an inequalities
Answer:
\(10 + 2.50 w > 50\)
Step-by-step explanation:
Given
\(Start =10\)
\(Rate = 2.50\)
Total = More than 50
Required
Represent as an inequality
Represent the weeks with w.
So, his savings in w weeks is:
\(Savings = Start + Rate * w\)
\(Savings = 10 + 2.50 * w\)
\(Savings = 10 + 2.50 w\)
His saving is expected to be more than 50.
More than, here means greater than (>)
So, we have;
\(Savings > 50\)
\(10 + 2.50 w > 50\)
What is the slope of a line perpendicular to the line whose equation is 3x+y=-5 Fully reduce your answer.
Answer:
The answer is 1/3
Step-by-step explanation:
14. 3/64 + 2/32 + 5/16 =
what is the answer
Answer:
27/64
Step-by-step explanation:
(7×16)+(5×64)64×16
=112+3201/024
=432/1024
Simplifying 432/1024, the answer is
=27/64
Please look at the photo! Thank you.
The output value of (g/f)(x) is 9x/(7x + 28).
The domain of g/f is (-∞, -4) U (-4, ∞)..
How to determine the corresponding composite function?In this exercise, we would determine the corresponding composite function of f(x) and g(x) under the given mathematical operations in simplified form as follows;
(g/f)(x) = (9/(x + 4)) ÷ 7/x
By rearranging the mathematical expression using the multiplication operation, we have the following:
(g/f)(x) = (9/(x + 4)) × x/7
(g/f)(x) = 9x/(7x + 28)
For the restrictions on the domain, we would have to equate the denominator of the rational function to zero and then evaluate as follows;
7x + 28 ≠ 0
7x ≠ -28
x ≠ -4
Domain = (-∞, -4) U (-4, ∞).
Read more on domain here: brainly.com/question/17440903
#SPJ1
The box plot below represents some data set. What percentage of the data values are between 110 and 170?
The percentage of the data values are between 110 and 170 = 37.5%
We know that in the box plot, the first quartile is nothing but 25% from smallest to largest of data values.
The second quartile is nothing but between 25.1% and 50% (i.e., till median)
The third quartile: 51% to 75% (above the median)
And the fourth quartile: 25% of largest numbers.
In the attached box plot, we can observe that between two numbers on the number line there are 5 equal parts.
So, each unit length measures 10 units.
Also, the median of the data = 110
We need to find the percentage of the data values are between 110 and 170.
i.e., the percentage of the data values are in the third quartile.
The range of this box plot is: 190 - 30 = 160
The data values are between 110 and 170 = 60
Using percentage formula,
P = (60/160) × 100
P = 37.5%
This is the required percentage.
Learn more about box plot here:
brainly.com/question/14277132
#SPJ1
Find the complete question below.
A scuba diver descends from the surface at a rate of 34 feet per minute.
What is the position of the scuba diver relative to the surface after diving for 4 minutes?
Answer:
The answer is -136
Step-by-step explanation:
you multiply -34 by 4 which gives you -136
(Hope this help)
Choose the system of inequality's that matches the graph
what would be your first step in completely factoring 6a^2-15a+6
The completely factoring form of 6a^2 - 15a + 6 is 3(2a - 1)(a - 2).
To completely factor the expression 6a^2 - 15a + 6, the first step is to check if there is a common factor among the coefficients (6, -15, and 6) and the terms (a^2, a, and 1).
In this case, we can see that the common factor among the coefficients is 3, so we can factor out 3:
3(2a^2 - 5a + 2)
Now we need to factor the quadratic expression inside the parentheses further. We are looking for two binomials that, when multiplied, give us 2a^2 - 5a + 2. The factors of 2a^2 are 2a and a, and the factors of 2 are 2 and 1. We need to find two numbers that multiply to give 2 and add up to -5.
The numbers -2 and -1 fit this criteria, so we can rewrite the expression as:
3(2a - 1)(a - 2)
Therefore, the completely factored form of 6a^2 - 15a + 6 is 3(2a - 1)(a - 2).
for similar questions on factoring.
https://brainly.com/question/28260513
#SPJ8
On every 3rd day, Ivan goes to the gym to exercise. Every 5th day, Gavin goes to the gym to exercise. What is the first day Ivan and Gavin will be at the gym on the same day? Why isn't the answer day 1?
Answer:
Day 15
Step-by-step explanation: If you know how to find common denominators or numerators, you do that.
If you multiply 5 x 3, it equals 15 days. Does three go into 15? Yes! That means that they will first meet at day 15
what is the equation
-8x+10y=16
-4x-5y=13
The equations give values of 1/2 and -11/8
What is simultaneous equation?you should be aware that two equations are solved simultaneously if they are solved together
The given equations are
-8x+10y=16 .............................1
-4x-5y=13 ..................................2
Multiply equation 2 by 2 to have
-8x -10y=26
Subtract equation 1 from equation 2
-8x+10y=16
-(-8x-10y=26) To get
The we have 20y = 10
Make y the subject of the relation
y=1/2
Put y = 1/2 in equation 1
-8x +10(1/2) = 16
-8x +5 = 16
-8x = 16-5
-8x = 11
Making x the subject of the formula we have
x=-11/8
In conclusion the values of x and y are -11/8 and 1/2 respectively
Learn more about simultaneous equation on https://brainly.com/question/16763389
#SPJ1
For the following telescoping series, find a formula for the nth term of the sequence of partial sums {Sn}. Then evaluate limn→[infinity]Sn to obtain the value of the series or state that the series diverges.
1) ∑[infinity]k = 1(1/k + 1 - 1/k + 2).
2) ∑[infinity]k = 1(1/(k + 6)(k + 7).
Answer:
The following are the solution to the given points:
Step-by-step explanation:
Given value:
\(1) \sum ^{\infty}_{k = 1} \frac{1}{k+1} - \frac{1}{k+2}\\\\2) \sum ^{\infty}_{k = 1} \frac{1}{(k+6)(k+7)}\)
Solve point 1 that is \(\sum ^{\infty}_{k = 1} \frac{1}{k+1} - \frac{1}{k+2}\\\\\):
when,
\(k= 1 \to s_1 = \frac{1}{1+1} - \frac{1}{1+2}\\\\\)
\(= \frac{1}{2} - \frac{1}{3}\\\\\)
\(k= 2 \to s_2 = \frac{1}{2+1} - \frac{1}{2+2}\\\\\)
\(= \frac{1}{3} - \frac{1}{4}\\\\\)
\(k= 3 \to s_3 = \frac{1}{3+1} - \frac{1}{3+2}\\\\\)
\(= \frac{1}{4} - \frac{1}{5}\\\\\)
\(k= n^ \to s_n = \frac{1}{n+1} - \frac{1}{n+2}\\\\\)
Calculate the sum \((S=s_1+s_2+s_3+......+s_n)\)
\(S=\frac{1}{2}-\frac{1}{3}+\frac{1}{3}-\frac{1}{4}+\frac{1}{4}-\frac{1}{5}+.....\frac{1}{n+1}-\frac{1}{n+2}\\\\\)
\(=\frac{1}{2}-\frac{1}{5}+\frac{1}{n+1}-\frac{1}{n+2}\\\\\)
When \(s_n \ \ dt_{n \to 0}\)
\(=\frac{1}{2}-\frac{1}{5}+\frac{1}{0+1}-\frac{1}{0+2}\\\\=\frac{1}{2}-\frac{1}{5}+\frac{1}{1}-\frac{1}{2}\\\\= 1 -\frac{1}{5}\\\\= \frac{5-1}{5}\\\\= \frac{4}{5}\\\\\)
\(\boxed{\text{In point 1:} \sum ^{\infty}_{k = 1} \frac{1}{k+1} - \frac{1}{k+2} =\frac{4}{5}}\)
In point 2: \(\sum ^{\infty}_{k = 1} \frac{1}{(k+6)(k+7)}\)
when,
\(k= 1 \to s_1 = \frac{1}{(1+6)(1+7)}\\\\\)
\(= \frac{1}{7 \times 8}\\\\= \frac{1}{56}\)
\(k= 2 \to s_1 = \frac{1}{(2+6)(2+7)}\\\\\)
\(= \frac{1}{8 \times 9}\\\\= \frac{1}{72}\)
\(k= 3 \to s_1 = \frac{1}{(3+6)(3+7)}\\\\\)
\(= \frac{1}{9 \times 10} \\\\ = \frac{1}{90}\\\\\)
\(k= n^ \to s_n = \frac{1}{(n+6)(n+7)}\\\\\)
calculate the sum:\(S= s_1+s_2+s_3+s_n\\\)
\(S= \frac{1}{56}+\frac{1}{72}+\frac{1}{90}....+\frac{1}{(n+6)(n+7)}\\\\\)
when \(s_n \ \ dt_{n \to 0}\)
\(S= \frac{1}{56}+\frac{1}{72}+\frac{1}{90}....+\frac{1}{(0+6)(0+7)}\\\\= \frac{1}{56}+\frac{1}{72}+\frac{1}{90}....+\frac{1}{6 \times 7}\\\\= \frac{1}{56}+\frac{1}{72}+\frac{1}{90}+\frac{1}{42}\\\\=\frac{45+35+28+60}{2520}\\\\=\frac{168}{2520}\\\\=0.066\)
\(\boxed{\text{In point 2:} \sum ^{\infty}_{k = 1} \frac{1}{(n+6)(n+7)} = 0.066}\)
What is the value of the exponent when simplifying the following expression: 16^1/2•16^1/2
Select one or more:
A. 1/4
B. 1/2+1/2
C. 1
D. 0
E. 1/2•1/2
F. 1/2-1/2
Answer:
B.
Step-by-step explanation:
because they have the same base and it's a multiplication so you have to add the exponents
simplifying the following expression: 16^1/2•16^1/2
C. 1
I need help I know the answer I just need someone to explain how they found the answer is x= 10, please help!
2x+7=5x-23
Answer and Step-by-step explanation: the doc is below for how i did the problem
Answer: x = 10
Step-by-step explanation:
To solve, we will isolate the variable x.
Given:
2x + 7 = 5x - 23
Add 23 to both sides of the equation:
2x + 30 = 5x
Subtract 2x from both sides of the equation:
30 = 3x
Divide both sides of the equation by 3:
10 = x
Reflexive property:
x = 10
On a survey, 8 students reported how many minutes it takes them to travel to school. Here are their responses.
4, 16, 4, 13, 4, 7, 4, 15
Find the mean travel time for these students.
If necessary, round your answer to the nearest tenth.
Answer:
9.6
Step-by-step explanation:
When it says find the mean, it basically means find the average. So we'll add the numbers and divide by the amount of numbers there are (7).
(4+16+4+13+4+7+4+15)/7 = 9.571
Round to the nearest tenth, 9.6.
make a graph a distance-time graph to show the story.Sara walked from home up the steep hill opposite her house. She stopped at the top to put her skates on, then skated quickly down the hill, back home again.
where the red line is the first part and green the second
the green line is more inclined because the velocity is higher
The red line starts in house and finish on mountain top
the green line starts in mountain top and finish on house, the distance of the two lines are the same but the green line use less time
Please help me with this problem, I can't figure it out
Answer: 44
Step-by-step explanation:
This is a confusing problem to look at, so use PEMDAS(parenthesis, exponents, multiplication, division, addition, subtraction).
5 * (-4) + (1 - (-3)^2)^2 simplify inside the parenthesis
5 * (-4) + (1 - 9)^2
5 * (-4) + (-8)^2 simplify exponents
5 * (-4) + 64 multiply
-20 + 64 finally, addition
44
PLEASE HELPPP THANKS
Answer: The last option. X is greater than or equal to -3
Step-by-step explanation:
If you are searching for all of the values highlighted in red, then it must be every single value greater than x=-3 including the value itself (the dot located on the value is shaded, therefore you must include it within the domain).
A certain process for manufacturing integrated circuits has been in use for a period of time, and it is known that 12% of the circuits it produces are defective. A new process that is supposed to reduce the proportion of defectives is being tested. A simple random sample of 100 circuits produced by the new process is taken. True or False:
Incomplete question. The full question read;
A certain process for manufacturing integrated circuits has been in use for a period of time, and it is known that 12% of the circuits it produces are defective. A new process that is supposed to reduce the proportion of defectives is being tested. In a simple random sample of 100 circuits produced by the new process, 12 were defective.
a. One of the engineers suggests that the test proves that the new process is no better than the old process since the proportion of defectives in the sample is the same. Is this conclusion justified? Explain.
b. Assume that there had been only 11 defective circuits in the sample of 100. Would this have proven that the new process is better? Explain.
c. Which outcome represents stronger evidence that the new process is better: finding 11 defective circuits in the sample, or finding 2 defective circuits in the sample?
Answer:
1. No.
2. No.
3. finding 2 defective circuits in the sample.
Step-by-step explanation:
1. This does not prove that the new process is not better than the previous since we can this was just a random sample of 100 circuits that led to that discovery, not the entire circuits produced.
2. Even there had been only 11 defective circuits in the sample of 100, it still does not necessarily guarantee or prove the new process is better, since the actual percentage of defectives may be greater in another larger sample over 100.
3. By having just two defective circuits in the sample it would more clearly show that the new process is better.
determine the value of x
The measure of the missing side length x in the right triangle is 1.5.
What is the measure of side length x?The figure in the image is a right triangle having one of its interor angle at 90 degree.
From the diagram;
Let angle θ = 30 degree
Opposite angle θ = x
Hypotenuse = 3
To solve for the missing side length x, we use the trigonometric ratio.
Note that: sine = opposite / hypotenuse
Hence:
sin( θ ) = opposite / hypotenuse
Plug in the values:
sin( 30 ) = x / 3
x = sin( 30 ) × 3
x = 1.5
Therefore, the value of x is 1.5.
Learn more about trigonometric ratio here: brainly.com/question/28016662
#SPJ1
what decimal is equivalent to 41 over 100 (pls keep it simple i am only in 5th grade )
Answer: 0.41
Step-by-step explanation:
To find the decimal point of a fraction, divide the numerator (the top half of the fraction) by the denominator (the bottom half of the fraction).
41 over 100 as a decimal point would be 41 divided by 100
Which produces the equivalent decimal, 0.41
P.S this is also how you find the percent of a number. To get the percent, move the decimal point 2 digits over (0.41 to 41.) and then add the percentage sign to the end of the number (41%)
0.41 = 41%
so 41 over 100 is 0.41, and 41 is also 41% of 100 (per cent means per 100)
Best of luck in 5th grade :)
The volume of a tree stump can be modeled by considering it as a right cylinder. Lauren measures it’s height as 0.7ft and it’s radius as 20in find the volume of the stump in cubic inches. Round your answer to the nearest tenth if necessary
The volume of the tree stump is approximately 1005.3 cubic inches when rounded to the nearest tenth.
To calculate the volume of the tree stump, we can use the formula for the volume of a cylinder, which is given by:
Volume = π * r^2 * h
Given:
Radius (r) = 20 inches
Height (h) = 0.7 feet
First, let's convert the height from feet to inches since the radius is already in inches. There are 12 inches in 1 foot, so:
Height (h) = 0.7 feet * 12 inches/foot = 8.4 inches
Now, we can substitute the values into the volume formula:
Volume = π * (20 inches)^2 * 8.4 inches
Calculating the volume:
Volume = 3.14159 * (20 inches)^2 * 8.4 inches
≈ 3.14159 * 400 inches^2 * 8.4 inches
≈ 1005.3096 cubic inches
Rounding the volume to the nearest tenth:
Volume ≈ 1005.3 cubic inches
Therefore, the volume of the tree stump is approximately 1005.3 cubic inches when rounded to the nearest tenth.
for such more question on volume
https://brainly.com/question/6204273
#SPJ8
i need the answer to this question
Answer:
Area of annulus is 40.85cm² to 2d.p
Step-by-step explanation:
Area of shaded part=Area of bigger circle -Area of smaler circle
Area of annulus= πR²- πr²= π(R²-r²)
A=3.142(7²-6²)
A=3.142(49-36)
A=3.142×13
A=40.846cm²
A=40.85cm² to 2d.p
Simplify: the sum of 4.4 and 5.2 all divided by the quantity 6 end quantity times the quantity 3 minus 6 end quantity squared plus 7.
2.2
21.4
−7.4
−2.6
Answer: : [B]: " 21. 4 " .
______
Step-by-step explanation:
The sum of 4.4 and 5.2; {all divided by...}.
Note: " 4.4 + 5.2 = 9.6 "
The "sum" ; means "addition":
which means as shown ^above; which is 9.6 ;
→ all divided "by the quantity 6 end quantity".
So, we divide:
then:
"times the quantity..." ; [means "multiply"] ;
then: ["minus"] means "subtraction"] ;
of: "(3 - 6)"
Then: "square" means raise to the power of: "2 " ; or :
raised to the exponent of: two—["2"] ;
Then: "plus" means: "add/addition" ;
So we have:
→ \(\frac{(9.6)}{6} * (3-6)^{2} +7\) ;
Note: → (9.6/6 = 9.6 ÷ 6 = 1.6) ;
→ (3-6)² = (-3)² = (-3 * -3) = 9 ;
And we can rewrite the expression:
→ 1.6 * 9 + 7 ;
= ( 1.6 * 9) + 7 ;
= (14.4) + 7 ;
= " 21 .4 "
______
The correct answer is: " 21 .4 " ; which corresponds to:
→ Answer Choice: [B]: " 21. 4 "
______
Hope this is helpful to you! Best wishes!
In the given case we can conclude that the simplified expression is 2.2. Option A is correct
The expression is:
\((4.4 + 5.2) / (6 * (3 - 6)^2 + 7)\)
Let's simplify the expression step by step.
First, we simplify the inner parentheses: (3 - 6) = -3
Then, we square \(-3: (-3)^2 = 9\)
Now, we simplify the expression in the denominator: 6 * 9 + 7 = 57
Finally, we divide the sum of 4.4 and 5.2 by 57: (4.4 + 5.2) / 57 = 2.2
Therefore, the simplified expression is 2.2.
Here are the steps in another way:
\((4.4 + 5.2) / (6 * (3 - 6)^2 + 7) =\)
(4.4 + 5.2) / (6 * 9 + 7) =
(4.4 + 5.2) / (57) =
9.6 / 57 =
2.2
Learn more about Simplifying an expression here:
https://brainly.com/question/29003427
#SPJ3