2x+y=3 -4x-4y=-8 using elimination?

Answers

Answer 1

Answer: 2x + 1y = 3 ⇒ 8x + 4y = 12
-4x - 4y = -8 ⇒ -4x - 4y = -8
4x = 4
4 4
x = 1
2x + y = 3
2(1) + y = 3
2 + y = 3
- 2 - 2
y = 1
(x, y) = (1, 1)

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Translate the following words to algebra symbols, using "n" as the variable. The product of six and a number is 24.

Answers

so n will be the unknown, and the expression is:
6n = 24
from where we can find the number n:
n = 24/6
n = 4

What's substitution for x=y-7;x+8y=2

Answers

X=2-8y
y=x+7
y=2-8y+7
9y=2+7
9y=9
y=1

x=y−7;x+8y=2
Step: Solve x=y−7 for x:Step: Substitute y−7 for x in x+8y=2:
x+8y
=2y−7+8y=2
9y−7=2(Simplify both sides of the equation)
9y−7+7=2+7(Add 7 to both sides)9y=9
9y/9=9/9(Divide both sides by 9)
y=1
Step: Substitute 1 for y in x=y−7:x=y−7
x=1−7
x=−6(Simplify both sides of the equation)
Answer:x=−6 and y=1

What Is The Value Of J In The Following Equation? J³=0.125

Answers

Answer: 0.5

Step-by-step explanation:

We're given J³ = 0.125, with J by itself, but we need to simplify J³ to J. J is being cubed, so in order to get rid of the ³ on J, we must do the opposite of cubing, which is taking the cube root. But, we must take the cube root of BOTH sides of the equation:

$J^(3)$ = 0.125
$\sqrt[3]{J^(3) }$ = $\sqrt[3]{0.125}$
J = 0.5

I hope this helps! :)

3/4 (6x + 1) - 3x = 1/4 (2x - 1)

Answers

3/4 (6x + 1) - 3x = 1/4 (2x - 1) . The purpose of this question is to solve for x.

$\mathbf{x = (-4)/(13)}$

Given that:

3/4 (6x + 1) - 3x = 1/4 (2x - 1)

When calculating algebraic expression, we take note of integers in bracket first, then we collect the like terms in order to find the value of x.

$\mathbf{(3)/(4) (6x + 1) - 3x =(1)/(4) (2x - 1) }$

Let's multiply both sides by 4 to eliminate the fraction.

$\mathbf{((3)/(4) * 4) (6x + 1) - 3x =((1)/(4) * 4 ) (2x - 1) }$

$\mathbf{(3) (6x + 1) - 3x =(1 ) (2x - 1) }$

Open brackets;

18x + 3 - 3x = 2x - 1

By rearrangement;

18x - 3x + 3 = 2x - 1

15x + 3 = 2x - 1

Collect like terms

15x - 2x = - 3 - 1

13x = - 4

Divide both sides by 13

$\mathbf{(13x)/(13) = (-4)/(13)}$

$\mathbf{x = (-4)/(13)}$

Learn more about algebraic expressions here:

brainly.com/question/11227332?referrer=searchResults

3/4*(6x+1)-3*x-(1/4*(2*x-1))=0
X=1

Does anyone know what the answer is

Answers

Answer:

cheating in entrance

Step-by-step explanation:

circumference: 14π

area: 49π

Answer:

nope

Step-by-step explanation:

A math book comprises of 2 sections: arithmetic and geometry in the ratio 5:3. How much of each type of content will be needed to make a book of 480 pages?

Answers

480/8=60

(60*5) : (60*3) = 300:180

800
480/3=160
160(5)=800

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