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MaRussiya [10]
3 years ago
11

How do we find what x is in this problem

Mathematics
2 answers:
Alexxx [7]3 years ago
6 0
Set The Numbers On The Side Equal To The Equation. Use Inverse Operation And Divide Since The X Is Used In Multiplication.
kykrilka [37]3 years ago
3 0
Ok so since x is the unkown variable we would need to isolate the variable. That means do the opposite operation. So we divide 2 by 2 because thats the coefficient. Then what you do is do the same thing on the other side,divide 1 by 2 to get your answer. your answer would be x=whatever your answer is.
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Identify which shapes are similar to shape A and which are not.
Georgia [21]

Answer:

2 and 3 look similar to A

1, 4, 5 and 6 are not similar to A .

hopefully you got it right.

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3 years ago
Read 2 more answers
Write two expressions that are equivalent to the expression below.<br> (9-0) + (9-c) + (9-c) + (9-C)
Nikolay [14]

Step-by-step explanation:

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3 years ago
Please simplify the equation
ss7ja [257]
Simplify
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6 0
3 years ago
An automobile manufacturer has given its van a 59.5 miles/gallon (MPG) rating. An independent testing firm has been contracted t
LekaFEV [45]

Answer:

The pvalue of the test is 0.0124 < 0.1, which means that there is sufficient evidence at the 0.1 level to support the testing firm's claim.

Step-by-step explanation:

An automobile manufacturer has given its van a 59.5 miles/gallon (MPG) rating. An independent testing firm has been contracted to test the actual MPG for this van since it is believed that the van has an incorrect manufacturer's MPG rating:

At the null hypothesis, we test if the mean is the same, that is:

H_0: \mu = 59.5

At the alternate hypothesis, we test that it is different, that is:

H_a: \mu \neq 59.5

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

59.5 is tested at the null hypothesis:

This means that \mu = 59.5

After testing 250 vans, they found a mean MPG of 59.2. Assume the population standard deviation is known to be 1.9.

This means that n = 250, X = 59.2, \sigma = 1.9

Value of the test statistic:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{59.2 - 59.5}{\frac{1.9}{\sqrt{250}}}

z = -2.5

Pvalue of the test and decision:

The pvalue of the test is the probability of finding a mean that differs from 59.5 by at least 0.3, which is P(|Z|>-2.5), which is 2 multiplied by the pvalue of Z = -2.5.

Looking at the z-table, Z = -2.5 has a pvalue of 0.0062

2*0.0062 = 0.0124

The pvalue of the test is 0.0124 < 0.1, which means that there is sufficient evidence at the 0.1 level to support the testing firm's claim.

5 0
3 years ago
Need help asap pls pls pls
Sliva [168]

Answer:

bqidhiwodxh

Step-by-step explanation:

627e29302990331 e7894094902

27290[

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