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3 years ago

7x + 5 = -16 what is the answer?x= ?

Mathematics

2 answers:

Nikitich [7]3 years ago

4 0

Answer:

x=-3

Step-by-step explanation:

7x=−16−5

7x=−21

x= − 21/7

X= -3

Pachacha [2.7K]3 years ago

3 0

Answer: x=-3

Step-by-step explanation:

7x+5-5=-16-5

7×/7=-21/7

X=-3

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Solve for u, z, y, and t:

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8 0

3 years ago

In a town election, 5985 people voted. This is 65% of the town's population who are registered to vote. How many people in town

Alika [10]

Answer:

$3,890

Step-by-step explanation:

The computation of the number of people in town registered to vote is shown below;

= People voted × registered to vote percentage

= 5,985 × 65%

= $3,890

Hence, the number of people in town registered to vote is $3,890

4 0

3 years ago

Simplify:

DanielleElmas [232]

The answer should be 5000x^2/3^11.

5 0

3 years ago

Lee is a teacher at a local high school who wanted to assess whether or not dogs physically resemble their owners enough for peo

frozen [14]

Answer:

The decision rule is

Reject the null hypothesis

The conclusion is

There is sufficient evidence to conclude that the population proportion of people who can correctly match a dog to their owner (out of two options) is better than just guessing

Step-by-step explanation:

From the question we are told that

The sample size is n = 16

The population proportion = 0.5

The number that of students that picked out the teachers dog is k = 14

Generally the sample proportion is mathematically represented as

$\^ p =\frac{k}{n}$

=> $\^ p =\frac{14}{16}$

=> $\^ p = 0.875$

The null hypothesis is $H_o : p = 0.5$

The null hypothesis is $H_o : p > 0.5$

Generally the test statistics is mathematically represented as

$z = \frac{\^ p - p }{\sqrt{ \frac{p(1- p )}{n} } }$

$z = \frac{0.875 - 0.50 }{\sqrt{ \frac{0.50 (1- 0.50 )}{16} } }$

$z = 3$

Generally the p-value is mathematically represented as

$p-value = P(Z > 3)$

From the z table the probability of Z>3 is mathematically represented as

$P(Z > 3) = 0.0013499$

$p-value = 0.0013499$

Let assume the level of significance is $\alpha = 0. 05$

Generally from the value obtained we see that $p-value < \alpha$ Hence

The decision rule is

Reject the null hypothesis

The conclusion is

There is sufficient evidence to conclude that the population proportion of people who can correctly match a dog to their owner (out of two options) is better than just guessing

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4 years ago

What is the value of x in the equation 8 + 4 = 2 (x minus 1)? 5 StartFraction 11 Over 2 EndFraction StartFraction 13 Over 2 EndF

vivado [14]

Answer:

Step-by-step explanation:

We can simplify the equation to

12 = 2x - 2

Add 2 to both sides

14 = 2x

Divide by 2

x = 7

6 0

4 years ago

Read 2 more answers