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Butoxors [25]
3 years ago
5

Steven is solving the equation 3(8−2x)+40=34. He begins with the following two steps.

Mathematics
2 answers:
STatiana [176]3 years ago
7 0

Answer:

<h2>Add 24 and 40</h2>

Step-by-step explanation:

3(8 - 2x) + 40 = 34       <em>use the distributive property a(b + c) = ab+ ac</em>

3(8) + 3(-2x) + 40 = 34

24 - 6x + 40 = 34          <em>combine like terms</em>

-6x + (24 + 40) = 34      <em>Answer: Add 24 and 40</em>

-6x + 64 = 34            <em>subtract 64 from both sides</em>

-6x = -30          <em>divide both sides by (-6)</em>

x = 5

yarga [219]3 years ago
5 0

Answer:

Add 24 and 40.

Step-by-step explanation:

Steven is solving the equation 3(8-2x)+40=34

Step 1:

3(8)+3(-2x)+40=34

Step 2:

24-6x+40=34

So, according to pemdas, the next step is Add 24 and 40.

Then this becomes:

Step 3:

64-6x=34

So, the answer will be option 2: Add 24 and 40.

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Gnesinka [82]
Hello there! So, the item has a 20% discount, but Juan still had to pay 80% for the item. To find the amount he paid, all you have to do is multiply the price by the percentage. We multiply by 80%, because he still had to pay the portion of the price. 80 * 80% (0.8) is 64. The. Juan paid $64.
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3 years ago
7200 divided by y = 90
vladimir1956 [14]
Are you looking for y and if so y=80
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3 years ago
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In the equation (m^5/6) (m^1/6)^7 = m^x , what is the value of x that makes the equation true?
vlabodo [156]

{m}^{ \frac{5}{6} }  \times (m {}^{ \frac{1}{6} } ) {}^{7 }  = m {}^{x}

m {}^{ \frac{5}{6} }  \times m {}^{ \frac{7}{6} }  = m {}^{x}

{m}^{ \frac{5 \times 7}{6 \times 6} }  =  {m}^{x}

\frac{35}{36}  = x

6 0
2 years ago
jessie has some chickens and rabbits. there are 30 heads and 76 legs in all. How many chickens and rabbits does jessie have?
Nataly_w [17]

Answer:106

Step-by-step explanation:

30+76=106

7 0
3 years ago
Darren wants to estimate the mean age in a population of trees. He'll sample nnn trees and build a 90\%90%90, percent confidence
Alchen [17]

Using the z-distribution, as we have the standard deviation for the population, it is found that the smallest sample size required to obtain the desired margin of error is of 77.

<h3>What is a z-distribution confidence interval?</h3>

The confidence interval is:

\overline{x} \pm z\frac{\sigma}{\sqrt{n}}

In which:

  • \overline{x} is the sample mean.
  • z is the critical value.
  • n is the sample size.
  • \sigma is the standard deviation for the population.

The margin of error is given by:

M = z\frac{\sigma}{\sqrt{n}}

In this problem, we have that the parameters are given as follows:

M = 3, z = 1.645, \sigma = 16.

Hence, solving for n, we find the sample size.

M = z\frac{\sigma}{\sqrt{n}}

3 = 1.645\frac{16}{\sqrt{n}}

3\sqrt{n} = 1.645 \times 16

\sqrt{n} = \frac{1.645 \times 16}{3}

(\sqrt{n})^2 = \left(\frac{1.645 \times 16}{3}\right)^2

n = 76.97

Rounding up, the smallest sample size required to obtain the desired margin of error is of 77.

More can be learned about the z-distribution at brainly.com/question/25890103

4 0
2 years ago
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