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Vikentia [17]
3 years ago
13

Express x in terms of a and b: b−7x=a−b

Mathematics
1 answer:
pav-90 [236]3 years ago
4 0
B - 7x = a - b
Subtract b from both sides.

-7x = a - 2b
Divide both sides by -7.

x = \frac{-a + 2b}{7}
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I really need help with this<br><br> Can someone help me thx<br><br><br> Plsssssss
omeli [17]

Answer:

10x^2 - 4x

Step-by-step explanation:

5x - 2 times 2x will equal the area of 'Potatoes.'

5x times 2x is 10x^2.

2 times 2x is 4x.

I cannot provide an exact value because x hasn't been identified.

I hope this helps.

3 0
3 years ago
Which of the following is a way that scientific advancements have benefited society? a. increased energy efficiency b. increased
PilotLPTM [1.2K]

The answer is a. increase energy efficiency.  This means that we now use less energy to do more thanks to many advances in technology.  It could also be due to the use of alternative sources of power such as the sun or win.  These new sources provide energy without causing pollution.

tbh google

7 0
2 years ago
Mom and Dad have four daughters, and each daughter has one brother. How many people are in the family?
klemol [59]
I would would say 7.

Mom + Dad + daughter + daughter + daughter + daughter + plus one brother = 7

Since they are all sisters and it says each one has one brother I think that would mean 7. That's just my comprehension of the question, though I may 100% wrong.
7 0
3 years ago
Read 2 more answers
Complete the sentences.
Contact [7]

Answer:

700,000

Step-by-step explanation:

To explain this, we need to know the basics.

If you look at the number 790,390, you should automatically know that you can also write the same number as:

700,000 + 90,000 + 300 + 90

How did we do this?

Because each number in 790,390 has a <u>value.</u>

In fact, we can do this for any number! Like this:

12,345

You can also write the same number like this:

10,000 + 2,000 + 300 + 40 + 5

Back to the original question. If there is a seven in the hundred thousands place, that means that the 9 is equal to 700,000

Examples:

12,345

The 3 in this number stands for 300, since it is in the hundreds place.

678,900

The 7 in this number stands for 70,000 because it is in the ten thousands place

Now you know!

6 0
2 years ago
Which of the following do you use to tell whether a relationship is<br> proportional or not?
Setler79 [48]

Answer:

The correct option to tell whether a relationship is proportional or not is;

\dfrac{y}{x}

Step-by-step explanation:

A proportional relationship is a relationship between two variables, 'x', and 'y' such that they have equivalent ratio, such that all values of variable 'y' are given by the product of the values of the variable 'x' and a constant, 'k'

Therefore, y = k · x, from which we have;

\dfrac{y}{x} = k = Contant

Therefore we can use \dfrac{y}{x} to tell whether a relationship is proportional or not proportional.

6 0
3 years ago
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