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shepuryov [24]
3 years ago
5

A number a decreased by 7 is 2.

Mathematics
2 answers:
umka21 [38]3 years ago
7 0

Answer:

9

Step-by-step explanation:

Let's first convert this to numbers. When a number is decreased by a certain amount, that is the same as saying that something is subtracted from it. Therefore:

a-7=2

Add 7 to both sides:

a-7+7=2+7

a=9

Hope this helps!

Minchanka [31]3 years ago
5 0

Answer:

9

Step-by-step explanation:

If a number (Let's call it x) has been subtracted by 7 (x - 7) then to find the previous number you just do the opposite. Let's call the end result y. 2 + 7 = x (Or y + 7 = x). <u>2 + 7 = 9.</u>

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-2x5 is -10 and 6x5 is 30 so wouldn’t the scale factor be 5?
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3 years ago
Reduce to simplest form.<br> -3/7 + (-3/4) = __<br> (They are fractions)
Alenkasestr [34]

Answer:

-5/25

Step-by-step explanation:

-3/7=-16/24

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3 years ago
Find a quadratic function with the given x-values as the only two REAL zeros. x=-2 and x=8. Please show work! Will mark Brainlie
posledela

 f(x) = (x- zero) * (x -zero)

f(x) = (x--2) (x-8)

f(x) = (x+2) (x-8)

if you need it multiplied out

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3 years ago
Vertex = (2,5), Point (0, 1)
Rama09 [41]

Answer:

therefore y= - (x-2)^2 + 5

Step-by-step explanation:

u do this by using this format here ..,

y=a(x-h)^2+k

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y=a(x-2)^2+5

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2 years ago
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Answer:

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Step-by-step explanation:

A. Frequency tables are created by arranging collected data values and their corresponding frequencies. The purpose of constructing this table is to show the number of times a value occurs. She most likely wouldn't want this to know the exact number of votes she got.

B. Pictographs are a way of showing data using images. Each image stands for a certain number of things. In this case, what use would images be when knowing the exact number of votes she got?

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D. Then again, you can also say none of these, because these options can also show information that isn't relevant.

Hope this helped, some information may not be accurate!

5 0
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