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4 years ago

What is the area of this trapezoid?

Mathematics

2 answers:

sasho [114]4 years ago

8 0

Area of trapezoid : (Base 1 + base 2) x h x 1/2

Let's solve!

( 2+6) x 5 X1/2

= 40x1/2

=20

20 in squared is the area!

DochEvi [55]4 years ago

5 0

Answer:

20 in.

Step-by-step explanation:

The formula for the area of a trapezoid is:

$A= \frac{b1+b2}{2} (h)\\\\$

$A= \frac{6+2}{2} (5)$

$A= \frac{8}{2} (5)\\\\A= 4(5)\\\\A= 20$

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Answer:

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Step-by-step explanation:

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3 years ago

Five devied by three forths

bija089 [108]

Answer:

$6\dfrac{2}{3}$

Step-by-step explanation:

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When dividing fractions, you just need to remember that all you need to do is get the inverse of the divisor and multipy.

So for the problem

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3 0

3 years ago

The caffeine content (in mg) was examined for a random sample of 50 cups of black coffee dispensed by a new machine. The mean an

Genrish500 [490]

Answer:

We are 98% confident interval for the mean caffeine content for cups dispensed by the machine between 107.66 and 112.34 mg .

Step-by-step explanation:

Given -

The sample size is large then we can use central limit theorem

n = 50 ,

Standard deviation $(\sigma)$ = 7.1

Mean $\overline{(y)}$ = 110

$\alpha =$ 1 - confidence interval = 1 - .98 = .02

$z_{\frac{\alpha}{2}}$ = 2.33

98% confidence interval for the mean caffeine content for cups dispensed by the machine = $\overline{(y)}\pm z_{\frac{\alpha}{2}}\frac{\sigma}\sqrt{n}$

= $110\pm z_{.01}\frac{7.1}\sqrt{50}$

= $110\pm 2.33\frac{7.1}\sqrt{50}$

First we take + sign

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now we take - sign

$110 - 2.33\frac{7.1}\sqrt{50}$ = 107.66

We are 98% confident interval for the mean caffeine content for cups dispensed by the machine between 107.66 and 112.34 .

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4 years ago

Find sin(α) in the triangle.

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Answer:

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Step-by-step explanation:

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2 years ago