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2 years ago

PLEASE pLEASE HELP!!!!!!!!

Mathematics

1 answer:

sleet_krkn [62]2 years ago

3 0

Answer: B = 73

Step-by-step explanation:

Since A = 17 degrees and there's already a right angle (90 degrees)

They add up to 107 degrees meaning the last angle is 73 because

the sum of interior angles add up to 180.

I'm sorry I couldn't find the other ones ( I don't have time )

but I'll give you a hint. You'll need to use Sine, Cosine, or Tangent

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Can someone please help?

Pepsi [2]

Answer:

Try working from Right to left

Step-by-step explanation:

That way the exponits will work out.

6 0

3 years ago

Martina drove 385 miles in 7 hours. at the same rate, how long would it take her to drive 495 miles?

Anarel [89]

385/7 = 495/x

Answer: 9 hours

5 0

3 years ago

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The hourly wage is $7.50. John worked 7 hour. How much did he<br> earn?

serg [7]

Answer:

52.5

Step-by-step explanation:

7.50 x 7

8 0

3 years ago

Complete parts (a) through (c) below.

Yuki888 [10]

Answer:

a) $t_{crit}= 1.34$

b) $t_{crit}=-2.539$

c) $t_{crit}=\pm 2.228$

Step-by-step explanation:

Part a

The significance level given is $\alpha=0.1$ and the degrees of freedom are given by:

$df = n-1= 15$

Since we are conducting a right tailed test we need to find a critical value on the t distirbution who accumulates 0.1 of the area in the right and we got:

$t_{crit}= 1.34$

Part b

The significance level given is $\alpha=0.01$ and the degrees of freedom are given by:

$df = n-1= 20-1=19$

Since we are conducting a left tailed test we need to find a critical value on the t distirbution who accumulates 0.01 of the area in the left and we got:

$t_{crit}=-2.539$

Part c

The significance level given is $\alpha=0.05$ and $\alpha/2 =0.025$ and the degrees of freedom are given by:

$df = n-1= 11-1=10$

Since we are conducting a two tailed test we need to find a critical value on the t distirbution who accumulates 0.025 of the area on each tail and we got:

$t_{crit}=\pm 2.228$

4 0

3 years ago

PLEASE HELP !!! The height of a rectangle is twice the width and the area is 32. Find the dimensions.

Helen [10]

Answer:

The rectangle has a width of 4 and a height of 8

Step-by-step explanation:

Let the height of the rectangle be H and the width be W.

We know the height of the rectangle is twice the width, so:

H = 2W

The area of a rectangle, A, is given by A = W * H, so in this case:

32 = W * 2W

32 = 2W²

W² = 16

W = 4

Knowing that the width is 4, the height must be 8. This gives us an area of 32.

8 0

3 years ago

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