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2 years ago

I need help on number 8 please

Mathematics

1 answer:

belka [17]2 years ago

8 0

Well, the area of a trapezoid is A = ( $b_{1}$ + $b_{2}$ ) * h * 1/2 so you can use the area of a parallelogram, which is A = l * w, by splitting the trapezoid into 2 triangles and one rectangle. So you'd use A = l * w for the rectangle and A = 1/2bh for the triangles. You'd get the same answer!

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An art school charges a materials fee in addition to a fee per class. The equation below represents the total cost y of

svet-max [94.6K]

Answer:

$65.00

Step-by-step explanation:

x = 1

y=40(1)+25

y=40+25

y=65

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2 years ago

64% of students will apply for graduate school. from a sample of 100 students, 52 stating that they will apply for grad school.

lana66690 [7]

Answer:

you accept the alternative hypothesis

Step-by-step explanation:

The null and alternative hypothesis can be computed as follows:

$H_o: p = 0.64 \\ \\ H_1: p \le 0.64$

The sample proportion $\hat p = \dfrac{x}{n}$

$\hat p = \dfrac{52}{100}$

$\hat p = 0.52$

The test statistics can be computed as:

$Z = \dfrac{\hat p -p_o}{ \sqrt{ \dfrac{p_o \times (1-p_o)}{ n} }}}$

$Z = \dfrac{0.52 -0.64}{ \sqrt{ \dfrac{0.64 \times (1-0.64)}{ 100} }}}$

Z = -2.5

The P-value = 2( Z< -2.5)

From the tables;

The P-value = 2 (0.0062)

The P-value = 0.0124

The significance level = 0.01

Since the P-value is > significance level; we fail to reject the null hypothesis.

Conclusion: we accept the alternative hypothesis

7 0

2 years ago

Please someone help!!! The sides of the base of a square right prism are 16 cm each and the height of the prism is 10 cm. what i

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2 years ago

I need help on this can you help me

miskamm [114]

Phil had 2 quarters, 1 dime and 3 pennies = 63 cents
Paul had 2 nickles = 10 cents

Total 63 + 10 = 73 cents

If Paul had 1 cent more than Phil, then Paul would have 37 cents and Phil would have 36 cents
but Paul had 10 cents
10 cents + 27 cents = 37 cents

so
1 quarter and 2 pennies Phil gave to Paul, total 27 cents

Answer

Phi gave Paul 1 quarter and 2 pennies.

3 0

2 years ago

PLS HELP SP=3x+1, and LN=10x−6. Find SP. A. 9 B. 4 C. 21 D. 7

Umnica [9.8K]

Step-by-step explanation:

2(sp)=ln

6x+2=10x-6

8=4x

x=2

therefore sp=3×2+1=6+1=7

Option D

5 0

2 years ago