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disa [49]
3 years ago
11

9y-7=56 y=?: show work

Mathematics
2 answers:
enyata [817]3 years ago
6 0

Answer:

53.12

Step-by-step explanation:

1234567890

Lilit [14]3 years ago
6 0

Answer:

y = 7

Step-by-step explanation:

9y - 7 = 56

       +7     +7

9y = 63

/9     /9

y = 7

(/9 = divided by 9)

check :  9 x 7 = 63 ( 63 - 7 = 56) correct!

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Solve 4(x + 2) = 20
KiRa [710]

Answer:

x = 3

Explanation:

\sf 4(x + 2) = 20

\sf 4x + 8 = 20

\sf 4x = 20 - 8

\sf 4x = 12

\sf x = \frac{12}{4}

\sf x = 3

check:

4(x + 2) = 20

4(3 + 2) = 20

4(5) = 20

20 = 20

Hence proved x = 3

4 0
2 years ago
Read 2 more answers
What is the total surface area of the
Tom [10]

Answer:

D:315

Step-by-step explanation:

6x7 and then divide by 2 = 21+21 =42 13x7= 91x3= 273+ 42= 315

6 0
3 years ago
If f(x)=2x+1f(x)=2x+1f, left parenthesis, x, right parenthesis, equals, 2, x, plus, 1 and g(x)=x^2+7g(x)=x
nadya68 [22]

The value of the composite function f(g(x)) is 2x^2 + 15

<h3>How to evaluate the composite function f(g(x))?</h3>

The functions are given as:

f(x) = 2x + 1

g(x) = x^2 + 7

We have the function f(x) to be

f(x) = 2x + 1

Substitute g(x) for x in the equation f(x) = 2x + 1

So, we have

f(g(x)) = 2g(x) + 1

Substitute g(x) = x^2 + 7  in the equation f(g(x)) = 2x + 1

f(g(x)) = 2(x^2 + 7) + 1

Open the brackets

f(g(x)) = 2x^2 + 14 + 1

Evaluate the sum

f(g(x)) = 2x^2 + 15

Hence, the value of the composite function f(g(x)) is 2x^2 + 15

Read more about composite function at

brainly.com/question/10687170

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<u>Complete question</u>

if f(x) = 2x + 1 and g(x) = x^2 + 7

which of the following is equal to f(g(x))

8 0
1 year ago
How many kilometres and metres are equal to 0.75 of 6km?​
Pachacha [2.7K]

Answer:

4.5 kilometers

Step-by-step explanation:

it is obtained by simply multiplying 0.75 with 6 km.the shortest and brief answer

3 0
2 years ago
What is the answer for No.22 &amp; 23 please
kondor19780726 [428]
Hello!

<u>Number 22</u>: We'd plot the first point at 0 since there is no stated y-intercept. Next, we'd use our slope to determine where to plot the next point, and that would create our line. According to the problem, our slope is -\frac{1}{2}, which automatically tells us that the slope would be going downwards because it's negative. 

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Your points should be at (0, 0) and (-1, 2)


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Flip some of those numbers around to get our equation in slope-intercept form:

y =  \frac{2}{3}x  + 2

Now to graph this, we do the same as we did for the last problem. Plot our first point at (0, 2), since 2 is our y-intercept. Afterwards, go up 2 and over 3, then plot the other point.

Your points should be at (0, 2) and (4, 3)
8 0
3 years ago
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