All categories

2 years ago

I WILL MARK BRAINLIEST!!! 45 POINTS!!!! Solve using substitution y= -8x-6 y= -3x +4

Mathematics

1 answer:

Nuetrik [128]2 years ago

3 0

Given :

y= -8x-6

y= -3x +4

By solving it, we get,

-8x-6 = -3x+4

$= > x = - 2$

Substituting the value of "x" in second given equation,

$y = - 3x + 4$

$= > y = - 3 \times ( - 2) + 4$

By solving it, we get,

$y = 10$

Hence, the values are :-

$x = - 2 \\ y = 10$

You might be interested in

Rewrite the function by completing the square (vertex form)<br><br> f(x)=x^2+16x-46

insens350 [35]

Answer:

$\large\boxed{f(x)=(x+8)^2-110}$

Step-by-step explanation:

$\text{The vertex form of equation}\ y=ax^2+bx+c:\\\\y=a(x-h)^2+k\\\\\text{We have the equation:}\\f(x)=x^2+16x-46=x^2+2(x)(8)-46=x^2+2(x)(8)+8^2-8^2-46\\\\\text{use}\ (a+b)^2=a^2+2ab+b^2\to x^2+2(x)(8)+8^2=(x+8)^2\\\\f(x)=(x+8)^2-64-46=(x+8)^2-110$

5 0

2 years ago

Please some help me .<br><br> OPTIONS: 75 degrees, 30, 90, or 45

lyudmila [28]

Answer:

x = 45

Step-by-step explanation:

x + 45 + 2x = 180

3x + 45 = 180

3x = 135

x = 45

3 0

2 years ago

Read 2 more answers

How to solve, -1.2x - 6.5x less than or equal to 2.3x + 5

Hitman42 [59]

-1.2x - 6.5x ≤ 2.3x + 5

-7.7x ≤ 2.3x + 5

≤ 10x + 5

-5 ≤ 10x

-1/2 ≤ x

x ≥ -1/2

4 0

2 years ago

angie needs to buy 156 candlesbfor a party. each package has 8 candles. how many packages should Angie buy?

andre [41]

20 packages

Step-by-step explanation:

Divide 156 by 8 and you get 19.5. Angie needs 156 candles, so you round 19.5 to 20.

6 0

2 years ago

A jury pool consists of 50 potential jurors and how many ways can a jury of 12 be selected

bija089 [108]

Solution:

we are given that

A jury pool consists of 50 potential jurors.

Wee have been asked to find the number of ways can a jury of 12 be selected.

As we know from the concept of combination that r person can be selected out of n in ncr ways. where

$n_C_r=\frac{n!}{r!(n-r)!}$

Now substitute the values we get

${50}_C_{12}=\frac{50!}{12!(50-12)!}\\
\\
{50}_C_{12}=\frac{50!}{12!38!}\\
\\
{50}_C_{12}=121399651100\\$

Hence the required number of ways is 121399651100

5 0

2 years ago