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2 years ago

Solving systems by elimination with multiplication: 8x+7y=20 and 4x-4y=-20

1 answer:

3 0

If you put 0 in the place of x or y, which every one you choose, it will cancel it or and you can just divide the number next to it by the answer (-20, 20). Take it one step at a time, don't try to do both at the same time.

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Reuben made 4 identical necklaces, each having beads and a pendant. The total cost of the beads and pendants for all 4 necklaces

zysi [14]

Answer:

$3.90

Step-by-step explanation:

The total cost was $24.40.

We know the cost for beads for each necklace is also $2.20, multiply this by four to find the cost of the beads for all the necklaces.

$2.20 × 4 = $8.80

Now we will subtract this from the total price.

$24.40 - $8.80 = $15.60

$15.60 Is the remaining cost for the pendants of all four necklaces. We will now divide this by four to find the price of a single pendant.

$15.60 ÷ 4 = $3.90

<u>This means the cost of each pendant is $3.90</u>

5 0

2 years ago

Read 2 more answers

Sara said, "If you divide my age by 3 and then add 8 years, the result is my age."

kaheart [24]

Answer:

Sara is 12

Step-by-step explanation:

12÷3=4 4+8=12

6 0

2 years ago

Read 2 more answers

QUICK 64 Divded by 8

ch4aika [34]

Answer:

8! 8x8=64 lol

Step-by-step explanation:

Hope this helps, And have a good day!

6 0

2 years ago

Only answer if yk it please! correct answer will get brainliest!

DanielleElmas [232]

Answer:

so x = 4 and x = -2/3

Step-by-step explanation:

Solve for x using the Master Product:

3x^2-10x-8=0

we see 3*(-8) = -24 and 2 * (-12) = -24 and 2 + -12 = -10

so 3x^2 + 2x - 12x - 8 = 0

x (3x + 2) -4 (3x + 2) = 0

(x - 4)(3x + 2) = 0

so x = 4 and x = -2/3

7 0

2 years ago

Evaluate f(x)=x+6 when x=−2,0, and 5.

ella [17]

Answer:

1. 4

2. 6

3. 11

Step-by-step explanation:

Plug each number into the equation (in place of x) to get the answer.

1. f(-2) = -2+6 = 4

2. f(0) = 0+6 = 6

3. f(5) = 5+6 = 11

6 0

2 years ago