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Jobisdone [24]
3 years ago
13

Bianca wrote the steps for her solution to the equation 2.3 + 8(1.3x – 4.75) = 629.9. She left out the description for the last

step.
What is the missing step of her solution?

Add 10.4 to both sides.
Add negative 10.4 to both sides.
Multiply both sides of the equation by 10.4.
Divide both sides of the equation by 10.4.
Mathematics
2 answers:
Inessa05 [86]3 years ago
7 0

Answer:

Option 4th is correct  the last step would be divide by 10.4 to get the value of x.

Step-by-step explanation:

We have been given an expression:

2.3+8(1.3x-4.75) =629.9  

We will solve the above equation for x

First distribute the parenthesis  over 8 we get:

2.3+10.4x -38=629.9

Now, subtract 2.3 on right hand side of the above equation we get:

10.4 x -38 =629.9-2.3

10.4 x=627.6+38

10.4 x=665.6

Hence, the last step would be divide by 10.4 to get the value of x

therefore, option 4th is correct.

Virty [35]3 years ago
5 0

I believe dividing is always the last step.


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Translate the sentence into an inequality.
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5b + 29 ≤ -25 is the translation of the phrase "the sum of a number times 5 and 29 is at most -25"

<h3>How to translate an English phrase into an algebraic equation?</h3>

Given the phrase in the question;

The sum of a number times 5 and 29 is at most -25.

First, we translate;

Let the unknown number represented by b.

  • A number times 5 ⇒ b × 5 ⇒ 5b
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  • Inequality sign for at most -25 ⇒ less than or equal to ⇒ ≤ -25

Now we combine the terms;

5b + 29 ≤ -25

We can go and solve for the unknown number.

5b + 29 ≤ -25

Subtract 29 from both sides

5b + 29 - 29 ≤ -25 - 29

5b ≤ -25 - 29

5b ≤ -54

b ≤ -54/5

Therefore, the translation of the phrase is 5b + 29 ≤ -25.

Learn more about inequality here: brainly.com/question/20383699

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So let T be the max and min temperature, and let x be the given temperature in °F.
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Answer:

Study 1 Answers:

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Study 2 Answers:

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2) Study 1 started with more bacteria

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