3 years ago

How do you solve the system of linear equation by multiplying? 5x - 2y = 11 3x + 5y = 19

1 answer:

4 0

5x-2y=11 X=(11+2•2)#5
5x=11+2y X=15#5
X=(11+2y)#5 X=3

3x+5y=19
3•(11+2y)#5+5y=19
(33+6y)#5+5y=19
(33+6y+25y)#5=95#5
33+31y=95
31y=62
Y=2
#significa divisão
•significa multiplicação

You might be interested in

Geometry: CC 2015 > Chapter 9: Chapter 9 Test > Chapter Test 9

Katena32 [7]

Answer:

ohk where is test

Step-by-step explanation:

and question

5 0

3 years ago

What is the value of x? 27(x+4)=−6 −35 −25 25 35

Oksanka [162]

x = -38/9 !!!

27(x+4)=−6

Step 1: Simplify both sides of the equation.

27(x+4)=−6

(27)(x)+(27)(4)=−6 (Distribute)

27x+108=−6

Step 2: Subtract 108 from both sides.

27x+108−108=−6−108

27x=−114

Step 3: Divide both sides by 27.

27x/27=−114/27

x=−389

6 0

3 years ago

The sum of a number x and 4 equals 12

Nataliya [291]

$x+4=12\ \ \ \ |subtract\ 4\ from\ both\ sides\\\\\boxed{x=8}$

6 0

3 years ago

Solve the system y = -x + 7 and y = -0.5(x - 3)2 + 8 I'll mark the brainliest!!!!!!!!!

hram777 [196]

Answer:

(1, 6)

(7, 0)

Step-by-step explanation:

y = -x + 7

y = -0.5(x - 3)² + 8

-x + 7 = -0.5(x - 3)² + 8

-x + 7 = -0.5(x² - 6x + 9) + 8

-x + 7 = -0.5x² + 3x - 4.5 + 8

0 = -0.5x² + 4x - 3.5

0 = x² - 8x + 7

0 = (x - 7)(x - 1)

x - 7 = 0 or x - 1 = 0

x = 1 or 7

7 0

3 years ago

Read 2 more answers

6. A Two-story building measures 21 root

KengaRu [80]

Answer:

1008 in

Step-by-step explanation:

84x12=1008

84 feet times 12 inches because 12 inches is a foot.

so 84 feet times 12 inches gets your answer. 84 times 12=1008

make sense?

7 0

3 years ago

Read 2 more answers