50 points
Please show work !!!

50 Points Please Show Work !!!

Answers

Answer 1
sinx = 3/5 = opposite side/hypotenuse
cosx = 4/5 = adjacent side/hypotenuse
5^2 = 4^2 + 3^2
25 = 16 + 9

sin(x/2) = + or - sqr(1-cosx)/2 = + sqr(1-4/5)/2 = - sqr(1/5/2) = sqr(1/10), ignore the negative root as x is in the 1st quadrant, and so is x/2.

sin(x/2) = 1/sqr10 = sqr10/10 = about 3.16/10 = 0.316

Related Questions

2. Blake interviewed 24 students to see whether they collected sports cards and whether they participated in sports. The table below shows his data Sports-Card Collecting and Sports Participation Collects Sports Cards Does Not Collect Sports Cards Participates in Sports 6 Does Not Participate in Sports 3 7 How many total students Blake interviewed, participate in sports?​

Answers

Therefore, out of the 24 students that Blake interviewed, 9 of them participate in sports.

What is equation?

An equation is a mathematical statement that indicates that two expressions are equal. It typically consists of variables, constants, and mathematical operations such as addition, subtraction, multiplication, and division. The expressions on both sides of the equation are separated by an equal sign "=" which means that the two expressions have the same value.

Here,

According to the table, Blake interviewed a total of 24 students. To find out how many of these students participate in sports, we need to add up the number of students who collect sports cards and participate in sports, as well as the number of students who do not collect sports cards and participate in sports. So:

Total students who participate in sports = Number of students who collect sports cards and participate in sports + Number of students who do not collect sports cards and participate in sports

Total students who participate in sports = 6 + 3

Total students who participate in sports = 9

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Raise the quantity in parentheses to the indicated exponent, and simply the resulting expression with positive exponents.

(−4−24)−2

Answers

The expression \((-4-24)-2\) when simplified is \(-30\)

What is simplification of expression

Simplification of an expression means to rewrite or transform the expression into an equivalent form that is simpler or more concise, without changing its meaning or value.

In mathematics, expressions can often be simplified by combining like terms, using the distributive property, factoring, canceling out common factors or terms, and other algebraic techniques.

The simplification of the expression given is:

\(-30\)

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The plot below shows the amount of time Mira spent on
5
55 math problems.
All measurements are rounded to the nearest
1
4
4
1

start fraction, 1, divided by, 4, end fraction minute.
A line plot labeled Time per problem (minutes) shows, moving left to right, labeled tick marks at seven, seven and a half, eight, eight and a half, nine, nine and a half, and ten. An unlabeled tick mark appears between each labeled tick mark. Dots are plotted as follows: 2 dots above the unlabeled tick mark between eight and eight and a half and 3 dots above nine and a half.



A line plot labeled Time per problem (minutes) shows, moving left to right, labeled tick marks at seven, seven and a half, eight, eight and a half, nine, nine and a half, and ten.
If Mira had spent the same total amount of time, but spent an equal amount of time on each problem, how many minutes would each problem have taken?

Answers

If Mira had spent the same total amount of time but an equal amount of time on each problem, each problem would have taken around 2.36 minutes.

In the given plot, Mira spent varying amounts of time on each of the 55 math problems. To find out how many minutes each problem would have taken if Mira had spent an equal amount of time on each problem, we need to calculate the total time she spent and divide it by the number of problems.

Looking at the plot, we can estimate the total time Mira spent by counting the dots above each tick mark and multiplying them by the corresponding time interval. Let's break it down step by step:

The tick marks on the plot are at 7, 7.5, 8, 8.5, 9, 9.5, and 10 minutes per problem.

There are 2 dots above the unlabeled tick mark between 8 and 8.5 minutes per problem. We can assume it represents 8.25 minutes.

There are 3 dots above the 9.5 minutes per problem tick mark.

Now, let's calculate the total time Mira spent:

(7 * 2) + (7.5 * 2) + (8 * 2) + (8.25 * 2) + (9 * 2) + (9.5 * 3) + (10 * 2) = 129.5 minutes.

Since Mira spent a total of 129.5 minutes on 55 problems, each problem would have taken approximately 2.36 minutes (rounded to two decimal places) if she had spent an equal amount of time on each problem.

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Two parallel lines are crossed by a transversal.
What is the value of d?

Answers

The value of d in the image that shows the two parallel lines that are crossed by the transversal is determined as: 125°.

What is a Transversal?

In geometry, a transversal is a line that intersects two or more other lines at distinct points. When a transversal intersects a pair of parallel lines, it creates various angles and relationships between those angles.

The image attached below shows the two parallel lines which are crossed by the transversal, where angle d and 125° are vertical angles.

Since they are vertical angles, they will be equal or congruent to each other. Therefore, the value of d = 125°

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Two parallel lines are crossed by a transversal.What is the value of d?

Which of these fractions is another name for 1/2?
A.
4/8
B.
1/3
C.
4/6
D. 3/4

Answers

Answer:
A) 4/8

Explanation:
A. 4/8 is another name for a 1/2

Solve each proportion round to the nearest tenth

Solve each proportion round to the nearest tenth

Answers

Answer:

\(v = \frac{7}{2}\)

Step-by-step explanation:

A gift package contains 6 wedges of cheese . If each wedges is 2/3 onuce what is the totel weight in pounds of cheese?

Answers

Answer:

4 ounces

Step-by-step explanation:

6x2/3= 4

#7 find the answer with the offering 20% discount

#7 find the answer with the offering 20% discount

Answers

Given a discount of 20% and a manufacturer's coupon of $200, the price after the discount and coupon, (C ∘ D)(x), is 0.8x - 200.

What is a discount?

A discount is an amount that reduces the price of a retail item.

Discounts are offered as rates and the discounted price is computed by multiplying the discount factor and the price.

Discount rate on offer = 20%

Discounting factor = 80% or 0.8 (100 - 20%)

Manufacturer's coupon off the price = $200

Let the price of the bureau = x

The price after the discount (discounted price) is given by D(x)

D(x) = 0.8x

The price after the coupon = C(x) = x - 200

The price after applying the discount and the coupon, (C ∘ D)(x) = 0.8x - 200


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Complete Question:

Wilson's Warehouse sells a certain brand's bureau. They are offering a 20% discount in addition to accepting a manufacturer's coupon for $200 off. Let the price of the bureau be x. If the price after the discount is given by D(x) and the price after the coupon is C(x), find (C ∘ D)(x).

PLEASE HELP ON QUESTION ASAP! 30PTS!
I WILL ALSO GIVE YOU A THANKS RATE YOU FIVE STARS AND MAYBE EVEN BRAINLIEST any silly answeres will be reported / deleted


Hiba needs 40g sugar to make 15 biscuits. she also needs three times as much flour as sugar . Hiba is going to make 60 biscuits . work out the amount of flour she needs .

Answers

40g sugar➡️15 biscuits
40.3=120g flour➡️15 biscuits
60 biscuits = 16.4➡️120.4 = 480g flour
She needs 480g flour to make 60 biscuits

Are the triangles congruent using AAS?
True
False

Are the triangles congruent using AAS?TrueFalse

Answers

no, theyre not! false.


it would be SAS.

please helppp

Simplify.
(-2)^-3

Answers

Answer:

-1/8   <----- FRACTION

Step-by-step explanation:

-1/8
To simplify, first flip the term to the denominator to get rid of the negative exponent. Then simplify 1/-2^3. This equals 1/-8 because -2^3 is the same as -2*-2*-2, which is -8.

What is the distance between the points (7,5) (4,9)

Answers

The Distance will be  5.

The distance between two points is the length of the line segment connecting the two points on the plane. The formula for finding the distance between two points is usually d=√((x2 – x1)² + (y2 – y1)²). This formula is used to find the distance between any two points on the coordinate or x-y plane.

Let point (7,5) be A and point (4,9) be B

Distance formula =

Ab  = √(x1- x2) ² + (y1 -y2) ²

Then Distance AB will be

Ab  = √(7-4) ² + (5 -9) ²

= √ 3² + 4²

= √ 9 + 16

= 5

Hence the distance  will be 5.

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The points \((7,5)\)  \((4,9)\) are separated by a distance of \(5\) units.

The distance between the two points is given by the length of the segment between them.

The Distance Formula is a helpful tool for figuring out how far apart two points are when they are arbitrarily represented on a coordinate plane as points A\((x_{1},y_{1})\) and B\((x_{2},y_{2})\).

The Pythagorean Theorem is essentially the source of the Distance Formula. Calculating the right triangle's hypotenuse's length is the fundamental purpose of the distance formula.

Use the distance formula to get the distance between two places.

\(d = \sqrt{ (x_{2} - x_{1})^{2} +(y_{2} - y_{1})^{2} }\)

In the posted query,

\((x_{1},y_{1})=(7,5)\\\\(x_{2},y_{2})=(4,9)\)

Distance formula,

\(d = \sqrt{ (x_{2} - x_{1})^{2} +(y_{2} - y_{1})^{2} }\)

\(d = \sqrt{ (4-7)^{2} +(9-5)^{2} }\)

\(d = \sqrt{ (-3)^{2} +(4)^{2} }\)

\(d = \sqrt{ 9+16 }\)

\(d = \sqrt{ 25 }\)

\(d = 5\)

Therefore, the points \((7,5)\)  \((4,9)\) are at a distance of \(5\) units.

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26. This double number line diagram represents the ratio of peanuts toraisins in trail mix.Peanuts +6+181224Raisins68What is the unit rate for the ratio of peanuts to raisins?3

Answers

Notice that on the number line we relate two points of each line (peanuts and raisins) to write the following proportions:

\(\frac{2}{6}=\frac{4}{12}\)

if we make cross product, we get:

\(\begin{gathered} \frac{2}{6}=\frac{4}{12} \\ \Rightarrow2\cdot12=6\cdot4 \\ \Rightarrow24=24 \end{gathered}\)

we have that 24=24, which is always true. This means that we wrote correctly the ratios, therefore the unit rate for the ratio of peanuts to raisins is 3:1 or 1/3

The answer is 1/3 or .3333

512
Which value is equivalent to
A
O
в 9
o
54
D • 59

Answers

Answer:

b

Step-by-step explanation:

Suppose a shipment of stereos contained 6% defectives. If a sample of size 285 is selected, what is the probability that the sample proportion will differ from the population proportion by less than 4%? Round your answer to four decimal places. 20 points.

Answers

Answer:

0.9954

Step-by-step explanation:

For normal distribution z score is

=  \(\frac{\hat p-p}{\sigma p}\)

Population proportion (p) = 0.060

Sample size (n) = 285

the standard error of proportion is

=  \(\sigma p = \sqrt{\frac{p\times (1 - p)}{n}}\)

After putting the values into the above formula we will get

= 0.0141

Probability as the sample proportion will different from the population proportion by lower than the 4% that is

Probability = P(0.02<X<0.1) = P(-2.84<Z<2.84) = 0.9977 - 0.0023

= 0.9954

Uma lâmpada de incandescência traz os seguintes dados inscritos no seu bulbo. U= 220 V e P = 100 W. Conhecendo as relações U = R. i e P = U. i , pode-se afirmar que o valor da resistência R da lâmpada durante o funcionamento é, em omhs:​

Answers

Answer:

The resistance is 484 ohm.

Step-by-step explanation:

An incandescent lamp has the following data inscribed on its bulb. U= 220 V and P = 100 W. Knowing the relations U = R. i and P = U. i , it can be stated that the value of the resistance R of the lamp during operation is, in omhs:

P = 100 W

V = 220 V

Let the current is I.

P = V I

100 = 220 I

I = 0.45 A

Now,

V = I R

220 = 0.45 x R

R = 484 ohm

The resistance is 484 ohm.

Question 1 of 10
Simplify the following expression.
3x^4+2x³-5x² +4x²+6x-2x-3x^4 +7x^5-3x³

Answers

Combining like terms yields 7x⁵ - x³ - x² + 4x.

how do u turn 4.5/7.2 into a decimal

Answers

Answer:

answer is 0.625 because if u divide two of them they are already a decimal.

Step-by-step explanation:

Craig is considering four loans. Loan L has a nominal rate of 8.254%, compounded daily. Loan M has a nominal rate
of 8.474%, compounded weekly. Loan N has a nominal rate of 8.533%, compounded monthly. Loan O has a nominal
rate of 8.604%, compounded yearly. Which of these loans will offer Craig the best effective interest rate?
a. loan L
b. loan M
c. loan N
d. loan O

Answers

The loan that will offer Craig the best effective interest rate is a) Loan L with a real percentage rate of 8.6%.

What is an effective interest rate?

An effective interest rate is the real percentage rate on an interest-paying investment which removes the effects of compounding over time.

The formula for computing the effective interest rate is as follows:

Effective Interest Rate, r = (1 + i/n)^n - 1.

              Nominal Interest Rates    Compounding Periods

Loan L                   8.25%                    365 days

Loan M                  8.47%                    52 weeks

Loan N                  8.533%                  12 months

Loan O                  8.604%                 Yearly

Effective Interest Rates:

Loan L = (1 + 0.0825/365)^365 - 1

= 1.08598 - 1

= 0.086

= 8.6%

Loan M = (1 + 0.0847/52)^52 - 1

= 1.0883 - 1

= 0.0883

= 8.83%

Loan N = (1 + 0.08533/12)^12 - 1

= 1.0887 - 1

= 0.0887

= 8.87%

Loan O = (1 + 0.08604/1)^1 - 1

= 1.08604 - 1

= 0.08604

= 8.604%

Thus, we advise Craig to take Loan L because it offers the least-costly effective interest rate.

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please answer the image below .

please answer the image below .

Answers

There u just needed to search the formula
please answer the image below .

Answer:

7

Step-by-step explanation:

surface area of a square pyramid

= Area of base + 1/2 base perimeter * slant height

= (1 x 1) + (1/2 x (1*4) x 3)

= 1 + 6

= 7 yd²

3(a+b) and 3a+b is this equivalent or non equivalent

Answers

Answer:

non equivelent

Step-by-step explanation:

just as an example to prove my awnser lets make a=1 and b=2

3(1+2)=9

3(1)+2=5

it would be equivelent if they both equaled the same number. :P

Carolyn has $1.30 in her purse in nickels and dimes. The number of nickels is 1 more than 3 times the number of dimes. Find the number of each type of coin.​

Answers

Answer:

5 dimes and 16 nickels

Step-by-step explanation:

5 times 3 = 15 + 1 = 16

5 times 10 = 50 cents

16 times 5 = 80 cents

50 + 80 = 130 or $1.30

A private school determines their annual profits from the function
p(x) = 0.4x2 – 19x, where x is the number of students enrolled in the school. What is
the annual profit if 750 students are enrolled in the school? 100 POINTS!!!

Answers

Answer:

210750 units

Step-by-step explanation:

Given function:

p(x) = 0.4x² - 19x

The profit if 750 students are enrolled:

p(750) = 0.4(750²) - 19(750) = 210750 units of money

The equation is

p(x)=0.4x²-19x

Put x=750

p(750)=0.4(750)²-19(750)=$210750

-5/2 squared
(-5/2 x -5/2)

Answers

This should help! ^-^
-5/2 squared(-5/2 x -5/2)

Jackie used a photocopier to reduce an image that was 4 inches wide and 6 inches long. If the reduced image was 4 inches long, how wide was the reduced image

Answers

The width of the image which was photocopied by Jackie and has an initial length of 6 inches and width of 4 inches is 6 inches.

What is Area?

An area is a unit of measurement used to describe the size of a region on a planar or curved surface. While a plane region or area refers to the area of a shape or planar lamina, a surface region or plane area refers to the area of an open surface or the boundary of a three-dimensional object.

Given:

The initial length of the image, l = 6 inches,

The initial width of the image, w = 4 inches,

The reduced length of the image, L = 4 inches,

The area of the initial image = The area of the reduced image,

l × w = L × W

Here W is the reduced width.

Substitute the values,

6 × 4 = 4 × W

W = 6 inches,

Therefore, the width of the image which was photocopied by Jackie and has an initial length of 6 inches and width of 4 inches is 6 inches.

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How many terms are in this expression ? 9k + 4m

Answers

Answer:

2 terms

Step-by-step explanation:

If DM=35, what is the value of r? Where DG is r+5 and GM is 3r-14

Answers

r=17.5
DG=22.5
GM=38.5

Purchase machinery from ABC Co. Ltd. Rs.10000and paid partly payment Rs.6000. What is it's journal entry.​

Answers

Purchase machinery from ABC Co. Ltd. Rs.10000and paid partly payment Rs.6000. What is it's journal entry.

Debit Machinery Account for Rs. 10,000

Credit ABC Co. Ltd. Account for Rs. 10,000

Debit ABC Co. Ltd. Account for Rs. 6,000

Credit Cash/Bank Account for Rs. 6,000

Which sentence represents the following inequality 9(x + 3)< 6x - 12

Answers

Answer:

Step-by-step explanation:

Here you go mate

Step 1

9(x + 3)< 6x - 12  equation

Step 2

9(x + 3)< 6x - 12  simplify

3x+27<-12

Step 3

3x+27<-12  Simplify by adding and dividing

x<-13

Answer^

ABCD is a parallelogram.
The coordinates of point A are (2,5)
x = (4,0) and y = (5,12)

Find the coordinates of points B and C.

ABCD is a parallelogram.The coordinates of point A are (2,5)x = (4,0) and y = (5,12)Find the coordinates

Answers

Answer:

B(6, 5), C(1, -7)

Step-by-step explanation:

A(2, 5)

From A to B, there is translation x, (4, 0).

Add 4 to A's x-coordinate, and add 0 to A's y-coordinate.

B(2 + 4, 5 + 0) = B(6, 5)

From C to B there is the translation y, (5, 12).

Since we are going from B to C, we undo translation y.

The translation from B to C is (-5, -12).

C(6 - 5, 5 - 12) = C(1, -7)

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