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2 years ago

14

Lila forgot the security code for her apartment building. The code is two different digits followed by a capital letter. How man

y different possible codes are there?

1 answer:

zavuch27 [327]2 years ago

4 0

10*9*26
Hope dis helps you :3

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A consumer advocacy group wants to determine whether there is a difference between the proportions of the two leading automobile

podryga [215]

Answer:

The answer is "0.3206".

Step-by-step explanation:

$H_0: p_1 = p_2\\\\H_a: p_1 \neq p_2\\\\\hat{p_1} = \frac{X_1}{N_1} = \frac{53}{400} = 0.1325\\\\\hat{p_1}= \frac{X_2}{N_2} = \frac{78}{500}= 0.156\\\\\hat{p} = \frac{(X_1 + X_2)}{(N_1 + N_2)} = \frac{(53+78)}{(400+500)} = 0.1456$

Testing statistic:

$z = \frac{(\hat{p_1}- \hat{p_2})}{\sqrt{(\hat{p} \times (1-\hat{p}) \times (\frac{1}{N_1} + \frac{1}{N_2}))}}$

$=\frac{(0.1325-0.156)}{\sqrt{(0.1456\times (1-0.1456)\times (\frac{1}{400} + \frac{1}{500}))}}\\\\ = -0.99$

Calculating the P-value Approach

$\text{P-value}= 0.3206$

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2 years ago

What is the value of 2-2x-3y5 for x = 2 and y = -4?

a_sh-v [17]

2 - 2(2) - 3(-4)5
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The answer is 58

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3 years ago

Write an equation that represents the line

lana [24]

Equation of the line: y=4/5x-18/5

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WHATS 15 DIVIDE BY 6

MrRissso [65]

15/6=2.5

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3 years ago

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Can someone help me with the answers 7- 14 pleaseeee and thank you!

Darina [25.2K]

You can get all the answeres easily.

Heres number 1: -1/5

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2 years ago