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lisov135 [29]
3 years ago
11

Hard math problems that equal 8

Mathematics
1 answer:
kogti [31]3 years ago
3 0
<span>4x+7x+19=3 x 12 - 4+(5 x 16) - 5 </span><span>

7x+3-2x=4x+2 x 5 + 1


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Solve each system of equations <br> X^2+y^2+18x+29=0<br> X+y=1
tatyana61 [14]

Answer:

two solutions : (-3;4)  and (-5;6)

Step-by-step explanation:

hello :

X²+y²+18x+29=0    ..(1)

X+y=1 ...(2)

by (2) : y = 1 - x

put this value in (1) : x² +(1-x)² +18x+29 = 0

x² +1 +x² -2x+18x +29 =0

2x²+16x +30 = 0

x²+8x+15 =0

delta = b²-4ac     a=1   b=8   c = 15

delta = (8)²-4(1)(15)=64-60 =4 = 2²

X1=(-8+2)/2 = - 3

X2=(-8-2)/2 = - 5

case 1 : x = -3    y = 1 - (-3) = 4

case 2 : x = -5    y = 1 - (-5) = 6

8 0
3 years ago
I need help with this please. :)
stepladder [879]

Answer:

64x³+4

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2x-1

Step-by-step explanation:

I hope this helps. :)

3 0
2 years ago
Here's what we know, numbers are rounded. 1.It takes 8 minutes for light to reach Earth from the sun. 2. The distance from the s
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<span>forth to the sun is 1 light-year</span>
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Pemdaswhat is the PEMDAS of 40 - 32 / 8 + 5 x - 2 ​
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Step-by-step explanation:

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3 years ago
What is the answer if I multipy 14x 14.50
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Answer:

203

Step-by-step explanation:

14×14.50=203 I calculated it

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