All categories

2 years ago

Ernesto tried to determine the solution for the system of equations using substitution. His work is shown below.

Mathematics

2 answers:

Blababa [14]2 years ago

6 0

I think its step 3 but i dont sure sorry

Tomtit [17]2 years ago

4 0

It is step 3 because 3(y+7) = 3y+21, so the 3 wasn't distributed to ALL of the values on the parentheses.

You might be interested in

What is the distance between (4,7) and (2, 2)?

Art [367]

I’m pretty sure the distance would be (2,5)

5 0

2 years ago

Read 2 more answers

What is the slope of this line?

Anvisha [2.4K]

(-4,5),(0,6)

slope = rise/run
tip... you have to crawl (run) before you run (rise) .

you can use the slope formula
$\frac{5 - 6}{ - 4 - 0} = \frac{ - 1}{ - 4} = \frac{1}{4}$
1/4

5 0

2 years ago

A fruit punch uses 1.5 cups of orange juice for every cup of apple juice.

timofeeve [1]

Are there any answer choices

6 0

2 years ago

Read 2 more answers

What number multiplied by itself four times equals 10000

mixas84 [53]

10 because there is 4 zero's behind the one. Hopes this helps!! :)

8 0

2 years ago

Read 2 more answers

Use synthetic division to show that the number given to the right of the equation is a solution of the equation. Then solve the

AysviL [449]

Answer:

$x = 2 \: or \: x = - 2 \: or \: x = - \frac{1}{2}$

Step-by-step explanation:

The given polynomial equation is

$2 {x}^{3} + {x}^{2} - 8x - 4 = 0$

We perform the synthetic division as shown in the attachment by dividing by x-2.

This gives a remainder of 0 and a quotient of

$2 {x}^{2} + 5x + 2$

This means the polynomial equation becomes:

$(x - 2)(2 {x}^{2} + 5x + 2) = 0$

We factor the quadratic term by splitting the middle term;

$(x - 2)(2 {x}^{2} + 4x +x + 2) = 0$

$(x - 2)(2 x(x+ 2) +1(x + 2) )= 0$

Collect common factors again:

$(x - 2)((x+ 2)(2x + 1) = 0$

The solution is:

$x = 2 \: or \: x = - 2 \: or \: x = - \frac{1}{2}$

8 0

3 years ago