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2 years ago

Help please I DONT understand

Mathematics

2 answers:

Maurinko [17]2 years ago

6 0

Answer:

I think the answer is B.

Step-by-step explanation:

I think it's B because you need to use tangent and every other answer isn't using tan.

RideAnS [48]2 years ago

3 0

Answer:

it is B i thinkif im wrong im sorry

Step-by-step explanation:

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3 years ago

Cheryl drove 4 hours at a constant rate to travel 160 miles. At what rate did she drive? A. 20 mph B. 35 mph C. 40 mph D. 72 mph

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Answer:

40 mph

Step-by-step explanation:

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A hypothesis will be used to test that a population mean equals 10 against the alternative that the population mean is more than

PilotLPTM [1.2K]

Answer:

A) 2.58

B) 1.96

C) 1.65

Step-by-step explanation:

A hypothesis used to test that

$H_o : \mu = 10$

against the alternatives $H1 : \mu$ not equal to 10

if null hypothesis is true, then distribution of test statics follow

$Zo = \frac{\bar x - \mu}{\frac{\sigma}{\sqrt{n}}}$

for two sided alternatives hypothesis $( H1: \mu \neq 7)$ , then P value is

$P = 2[1- \phi(\left | Zc \right |)]$ (1)

a)significance level $\alpha = 0.01$

from 1 eq we get

$\pi (\left | Zc \right |) = P(Zo$

Therefore $\left | Zc \right | = 2.58$ FROM Z TABLE

B) significance level $\alpha = 0.05$

from 1st equation we get

$\pi (\left | Zc \right |) = P(Zo < \left | Zc \right |) = 1 - \frac{0.05}{2} = 0.975$

Therefore $\left | Zc \right | = 1.96$ FROM Z TABLE

C) significance level $\alpha = 0.10$

from 1 eq we get

$\pi (\left | Zc \right |) = P(Zo$

Therefore $\left | Zc \right | = 1.65$ FROM Z TABLE

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3 years ago

Instructions: Solve the following literal equation. Solve 4x – 2y = 18 for y. y =

krok68 [10]

Answer:

$y = - 9 + 2x$

Step-by-step explanation:

Objective: Use the rules of Algebra to isolate y.

$4x - 2y = 18$

$- 2y = 18 - 4x$

$y = \frac{18 - 4x}{ - 2}$

$y = - 9 + 2x$

4 0

3 years ago

Help please I DONT understand ​

Help please I DONT understand