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3 years ago

How can you use properties to solve equations with variables on both sides

1 answer:

5 0

You can use properties to solve equations with variables on both side by simplifying get the variable on one side. solve using inverse operations then check to see if it fits in right .

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Re-Write 51/40 as a decimal.

kati45 [8]

Answer:

1.275

Step-by-step explanation:

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2 years ago

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You are riding on a road at 5mph and your friennd in the same direction at 3mph with a head start of 1/2 mile. how long will it

VashaNatasha [74]

You will catch up in 15 minutes

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3 years ago

It is advertised that the average braking distance for a small car traveling at 65 miles per hour equals 122 feet. A transportat

madreJ [45]

Complete Question

The complete question is shown on the first uploaded image

Answer:

the null hypothesis is $H_o : \mu = 122$

the alternative hypothesis is $H_a : \mu \ne 122$

The test statistics is $t = - 1.761$

The p-value is $p = P(Z < t ) = 0.039119$

$p \ge 0.01$

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 122$

The sample size is n= 38

The sample mean is $\= x = 116 \ feet$

The standard deviation is $\sigma = 21$

Generally the null hypothesis is $H_o : \mu = 122$

the alternative hypothesis is $H_a : \mu \ne 122$

Generally the test statistics is mathematically evaluated as

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

substituting values

$t = \frac { 116 - 122 }{\frac{ 21 }{ \sqrt{ 38} } }$

$t = - 1.761$

The p-value is mathematically represented as

$p = P(Z < t )$

From the z- table

$p = P(Z < t ) = 0.039119$

$p \ge 0.01$

4 0

3 years ago

PLEASE HELPPPPP ME, IVE BEEN STUCK ON THIS ONE!!..

lianna [129]

Answer:

C. 9 minutes 30 seconds

Step-by-step explanation:

well you could estimate it or just add 2.5 to 6.9 and you would get pretty close to the answer

Have a good day! :)

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1 year ago

Julie has 3 1/3 yards of fabric to make doll outfits. Each outfit requires 5/6 yard of fabric. What is the maximum amount of out

Juliette [100K]

Answer:

4 outfits

Step-by-step explanation:

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2 years ago

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