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scoray [572]
2 years ago
6

kristy had two brothers and 2 sister the little sister name kylie was 8 years old the big sister name kaylie is 12 years old the

big brother name jay lay is 13 years old the little brother is 10 years old but they mom let hem buy what ever they wanted she gave each 10$ and 9 cents how many money did she paid
Mathematics
2 answers:
Ksenya-84 [330]2 years ago
8 0

Answer:

i think $54.5

Step-by-step explanation:

i did 5 times 40 and 5 times .9

melisa1 [442]2 years ago
8 0

Answer:

Ahhhhhhhhhhhhhhhhhhhhhhhh

Step-by-step explanation:

Thx fa free points susta

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Solve the system of equations:
iVinArrow [24]

(-1,-2) \:  \:  \:  \:  \: and \:  \:  \:  \:  \: (3,6) \\ Answer: A

Step-by-step explanation:

y = 2x \\ y =  {x}^{2}  - 3 \\  \\ 2x =  {x}^{2}  - 3 \\  {x}^{2}  - 2x - 3 = 0 \\ (x + 1)(x - 3) = 0 \\ x + 1 = 0 \:  \:  \:  \:  \: or \:  \:  \:  \:  \: x - 3 = 0 \\ x =  - 1 \:  \:  \:  \:  \: or \:  \:  \:  \:  \: x = 3

When x = -1

Substitute x = -1 into y = 2x

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When x = 3

Substitute x = 3 into y = 2x

y = 2(3)

y = 6

( 3, 6)

5 0
3 years ago
1.) Solve 2x^2-12x+20=0 using the quadratic solution set? What is the solution set?
marshall27 [118]
Please, share just ONE problem at a time.  Thanks.

<span>Solve 2x^2-12x+20=0:
Simplify this by dividing each term by 2:  x^2 - 6x + 10 = 0

Identify a, b and c:  a=1, b=-6 and c=10.  Then b^2=36.

Write out the solutions using the quadratic formula:

        6 plus or minus sqrt(36-40)
x = ---------------------------------------
                            2

sqrt(36-40) = sqrt(-4) = plus or minus i2

Then:
 
         6 plus or minus i2
x = --------------------------- (answer)
                  2</span>
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2 years ago
Find the lateral area of the come in terms of pi.
Norma-Jean [14]
The answer should be 12x cm power of 2
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3 years ago
Read 2 more answers
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