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tiny-mole [99]
3 years ago
6

Solve for x I’m the equation x^2 + 4x + 17 = -96

Mathematics
1 answer:
Pepsi [2]3 years ago
7 0
X=2.12602916
By solving
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What is one of the solutions to the following equations? y2+x2=53<br> Y-x=5
Olenka [21]
(1)  y² + x² = 53
(2)  y - x = 5 ⇒ y = x + 5

subtitute (2) to (1)

(x + 5)² + x² = 53      |use (a + b)² = a² + 2ab + b²

x² + 2x·5 + 5² + x² = 53

2x² + 10x + 25 = 53     |subtract 53 from both sides

2x² + 10x - 28 =0     |divide both sides by 2

x² + 5x - 14 = 0

x² - 2x+ 7x - 14 = 0

x(x - 2) + 7(x - 2) = 0

(x - 2)(x + 7) = 0 ⇔ x - 2 = 0 or x + 7 = 0 ⇔ x = 2 or x = -7

subtitute the values of y to (2)

for x = 2, y = 5 + 2 = 7
for x = -7, y = 5 + (-7) = 5 - 2 = 3

Answer: x = 2 and y = 7 or x = -7 and y = 3
4 0
3 years ago
Solve by factoring<br> 6x^2 +13x -28 =0
Sauron [17]

Answer:

x=4/3 or x=-7/2

Step-by-step explanation:

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

8 0
2 years ago
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Two radios equivalent to 3/12
gtnhenbr [62]

1:4 and 6:24 because 3/3=1 and 12/3=4 and 6/2=3 and 24/2=12

3 0
2 years ago
Factor and solve X^2+7x-8=0
adelina 88 [10]
(X^2+8x)-(x-8)=0
x(x+8)-1(x+8)=0
(X-1)(x+8)=0
X= 1
X= -8
4 0
2 years ago
10 points
Archy [21]

Answer:

16 books fit and theres .8 inches left

Step-by-step explanation:

16x2.2 = 35.2

36 - 35.2 + 0.8

7 0
3 years ago
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