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3 years ago

Help pleaseeeeeeeeeeeeee

Mathematics

2 answers:

Firdavs [7]3 years ago

8 0

Answer:

Step-by-step explanation:

A = (base x height)/2

1) multiply by 2

A x 2 = base x height

2) divide by the base

height = (A x 2)/base

h = (20 x 2)/8 = 5

Sunny_sXe [5.5K]3 years ago

6 0

Answer:

D. 5

Step-by-step explanation:

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Would I have to subtract both numbers by 180? Helppp

Arturiano [62]

Answer:

B = 50°

Step-by-step explanation:

Because all the angles in every triangle added together equals 180°, you would divide m∠CAB (62°) by 2, giving you 31°, then add the 99° to the 31°, and you have 130°, and just by looking at it, you can see that the ∠ABD =50°

Hope this helps :)

8 0

3 years ago

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A manufacturer of paper coffee cups would like to estimate the proportion of cups that are defective (tears, broken seems, etc.)

Maksim231197 [3]

Answer:

The 95% confidence interval is $0.0503 < p < 0.1297$

The sample proportion is $\r p = 0.09$

The critical value is $Z_{\frac{\alpha }{2} } = 1.96$

The standard error is $SE =0.020$

Step-by-step explanation:

From the question we are told that

The sample size is n = 200

The number of defective is k = 18

The null hypothesis is $H_o : p = 0.08$

The alternative hypothesis is $H_a : p > 0.08$

Generally the sample proportion is mathematically evaluated as

$\r p = \frac{18}{200}$

$\r p = 0.09$

Given that the confidence level is 95% then the level of significance is mathematically evaluated as

$\alpha = 100 - 95$

$\alpha = 5\%$

$\alpha = 0.05$

Next we obtain the critical value of $\frac{ \alpha }{2}$ from the normal distribution table, the value is

$Z_{\frac{\alpha }{2} } = 1.96$

Generally the standard of error is mathematically represented as

$SE = \sqrt{\frac{\r p (1 - \r p)}{n} }$

substituting values

$SE = \sqrt{\frac{0.09 (1 - 0.09)}{200} }$

$SE =0.020$

The margin of error is

$E = Z_{\frac{ \alpha }{2} } * SE$

=> $E = 1.96 * 0.020$

=> $E = 0.0397$

The 95% confidence interval is mathematically represented as

$\r p - E < \mu < p < \r p + E$

=> $0.09 - 0.0397 < \mu < p < 0.09 + 0.0397$

=> $0.0503 < p < 0.1297$

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3 years ago

What are the coordinates of quadrilateral A'B'C'D'?

Andrei [34K]

0,3 3,3 2,3 and 1,2 (from A to D)

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2 years ago

I WILL MAKE YOU BRAINLIEST

34kurt

Answer:

Step-by-step explanation:

32/4=8

8 is 2x 4 so multiply 5x2=10

now multiply 10x4

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3 years ago

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Please help asap will give brainliest if correct.

professor190 [17]

Answer:

x¹²,8x⁴,6x,2x,1

Step-by-step explanation:

x²×x⁶×x⁴=x¹²

x^4(8) =8x⁴

x^1(6) =6x

x^1(2) =2x

x^0 = 1

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3 years ago