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Alex73 [517]
3 years ago
10

Worth 25 points, giving brainiest to a quick and good answer.

Mathematics
1 answer:
vredina [299]3 years ago
7 0

Answer:


Step-by-step explanation:

Note that the quadratic formula has that "plus or minus" due to our taking the square root of some quantity.  No square root is involved in the two formulas you've posed.

I have two suggestions here:

1) Write " (x plus or minus y)^2 = x^ plus or minus 2 times xy + y^2 "  Note that a + on the left side corresponds to a + on the right side, and same with - .

2) Memorize these two formulas, which in most algebra textbooks you'll find in the section "special products and factoring."


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The value of x in the expression<br> 2x/3 - 7 = 5 is
Andrej [43]

Answer:

The answer is X = 18

Step-by-step explanation:

2x/3 - 7 = 5

Multiply both sides if the equation by 3 : 2x - 21 = 15

Move the constant to the right hand side and change its sign : 2x = 15 + 21

Calculate 2x = 15 + 21

2x = 36

Divide both sides of the eqaution by 2 : 2x = 36

x = 18

Answer X = 18

3 0
3 years ago
Shawna and her best friend Keisha go shopping.
amid [387]

Answer:

138

Step-by-step explanation:

p(x) = 3x^4 + 2x^3 − 4x^2 + 21

Let x = 2

p(2) = 3*(2)^4 + 2*(2)^3 − 4*(2)^2 + 21

       = 3*16+2*8-4*4+21

       =48+16-16+21

        = 69

This is per girl

There are 2 girls

2 * 69

138

4 0
3 years ago
What value is missing from the table
natta225 [31]

Answer: it think its A

Step-by-step explanation:

3 0
3 years ago
What is the solution of the system of linear equations?
Monica [59]
-3x+4y=-18
2x-y=7
the answer qould be C.(2,-3)
-3(2)+4(-3)=-18
-6+(-12)=-18
-18=-18

2(2)-(-3)=7
4+3=7
7=7

C.
8 0
3 years ago
Read 2 more answers
1) A population of bees is increasing at a rate of 8% per week. If
ad-work [718]

Answer:

≈387,7

Step-by-step explanation:

I hope it's right. Sorry if it's not right.

3 0
3 years ago
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