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Anna007 [38]
4 years ago
12

2х + Зу = 9

Mathematics
1 answer:
umka2103 [35]4 years ago
5 0

Answer:

3

Step-by-step explanation:

Given the 2 equations

2x + 3y = 9 → (1)

- 2x + 2y = 6 → (2)

Adding the 2 equations term by term will eliminate x

(2x - 2x) + (3y + 2y) = (9 + 6), that is

5y = 15 ( divide both sides by 5 )

y = 3

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The list shows the amount of each ingredient Charlotte used to make 3 servings of macaroni and cheese.
MariettaO [177]
D because 3-1 12 divided by 3 is 4
7 0
3 years ago
Type the correct answer in the box. Use numerals instead of words.
Karo-lina-s [1.5K]

Answer:

6

Step-by-step explanation:

A line that passes through the point (x,y), with a y-intercept of b and a slope of m, can be represented by the equation y = mx + b.

If a line has the slope of -0.5, then m=-0.5 and the equation of the line is

y=-0.5x+b

This line passes throughthe point (10,1), then the coordinates of this point satisfy the equation of the line:

1=-0.5\cdot 10+b\\ \\1=-5+b\\ \\b=1+5\\ \\b=6

and the equation of the line is

y=-0.5x+6

Since b=6, the y-intercept of the line is 6.

7 0
3 years ago
Read 2 more answers
What does x equal in this equation -6=3/4x
SOVA2 [1]

Answer:

x = -1/8

Step-by-step explanation:

to determine the value of x in the expression-6=3/4x

first, cross multiply inorder to have a straight line equation ,then combine the like terms together and evaluate.

solution

-6=3/4x

using cross multiplication techique

4x × -6 = 3

-24x = 3

divide both sides by the coefficient of x which is -24

-24x/-24 = 3 /-24

x = -1/8

7 0
3 years ago
What is the solution for the following equation? 3(a-7)=14-4a​
prohojiy [21]

Answer:

a= 5

Step-by-step explanation:

3 (a-7)= 14-4a -Remove Parentheses

3a-21=14-4a -Move the terms

3a+4a=14+21 -Collect like terms

7a=35 -Divide both sides

a=5 - Solution

5 0
3 years ago
Solve the equation for C<br><br> R-C=P
earnstyle [38]

Answer:

C = R - P

add C to both sides of the equation

R = P + C

subtract (P) from both sides

R - P = C ⇒ C = R - P

Step-by-step explanation:

Hope This Helps...

4 0
3 years ago
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