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Margarita [4]
3 years ago
6

Find the value of x for the function y=-2(x+7) if y has a value of 20

Mathematics
2 answers:
Ahat [919]3 years ago
8 0

Answer:

x=-17

Step-by-step explanation:

-2(x+7)=20

distibute the -2

-2x-14=20

add 14 to both sides

-2x=34

divide by -2

x=-17

Wewaii [24]3 years ago
4 0

Answer:

x=3

Step-by-step explanation:

put the value of y=20 in equation

20=2(x+7)

20=2x+14

20-14=2x

6=2x

6/2=x

x=3

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Find the greatest common factor of 26 and 14.
Molodets [167]

Answer:

2

Step-by-step explanation:

A factor is a number that can evenly divide into another number.

Let’s list all the factors of both numbers.

26: 1, 2, 13, 26

14: 1,2, 7, 14

Now find the GCF, or greatest common factor. The biggest number that is a factor of both 26 and 14 is 2.

Therefore, the GCF of 26 and 14 is 2.

6 0
3 years ago
The factors of 5y^2-2y-7 are (5y-7) and ???
gladu [14]
If we expand bx to jx and kx we have:

5y^2-2y-7

5y^2-7y+5y-7  then factor...

y(5y-7)+1(5y-7)

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So the other factor is:

(y+1)
4 0
3 years ago
A circle has a diameter of 100 cm. which of these is closest to its area? show or explain your reasoning
patriot [66]

Answer:31r

Step-by-step explanation:

Formula=πd

22/7 × 100

3.14 × 100

314 cm square

7 0
3 years ago
A jewelry store marks up the price of bracelets they purchase at $30.00 each by 75%. What is the markup and new price of each br
horrorfan [7]
The new price is 52.50
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30/4=7.5
7.5x3=22.5
22.50+30= 52.50
3 0
3 years ago
PLEASEEEEEE HELPPPP
Ne4ueva [31]
This is just like an exponential growth equation...

Final=initial*rate^periods

25000=12500(1.0525)^t

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ln2=t ln1.0525

t=ln2/ln1.0525

t=13.55

t=14 yrs
4 0
4 years ago
Read 2 more answers
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