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DanielleElmas [232]
3 years ago
5

If y=-7when x=-21,what is the value of x when y=9

Mathematics
1 answer:
Bond [772]3 years ago
5 0

Answer:

27

Step-by-step explanation:

-21/-7 =3 so x is 3y. if you plug 9 in for y you get 3(9) then you multiply and get 27.

You might be interested in
Question 6
netineya [11]

Answer:

y= 84

Step-by-step explanation:

y = kx

where k is the constant

k = y/x = 91/13 = 7

the value of Y when x= 12

y = kx =7(12)

y =84

4 0
2 years ago
if two angles of a triangle each measure 50 degrees then what is the measure of the third angle of the triangle
uranmaximum [27]

Answer:

80

Step-by-step explanation:

Triangles angles measure 180 degrees when added.

You have 2 at 50 which makes 100 degrees.

180 - 100 = 80 degrees

7 0
3 years ago
sold 45 of his DVDs and purchased 10 more. If Smith has 15 DVDs now, how many DVDs did he have to begin with?
natita [175]
X-45+10=15
X-35=15
+35 +35
X=50
He had 50 dvds to begin with.
3 0
3 years ago
How much of the circle is shaded write your answer as a fraction in the simplest form
Luden [163]

Answer:

1/14

Step-by-step explanation:

Change the fractions to have a common denominator. The simplest choice for denominator is to just multiply the denominators, i.e., we want to go to /2 * /7 = /14.

So 1/2 = 7/14 and 3/7 = 6/14.

1 whole is 14/14.

14/14 - 7/14 - 6/14 = 1/14

7 0
2 years ago
8x-3y<4 and 9x+2y<-1 is (5,-5) a solution of the system yes or no
azamat

For this case we have the following system of inequalities:

8x-3y

We must verify if the point(x, y) :( 5, -5) is a system solution

Inequality 1:

8 (5) -3 (-5)

Inequality is not met!

Thus, the given point is not a system solution.

Answer:

The point is not a system solution.

4 0
2 years ago
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