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kicyunya [14]
3 years ago
10

Solve X²-5X-14=0 using quadratic formula

Mathematics
1 answer:
il63 [147K]3 years ago
6 0

Answer:

x=-2 or x=7

Step-by-step explanation:

X²-5X-14=0  find the factors of -14x² which is -7x and +2x

X² -7x + 2x - 14 = 0   factorize

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

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

x+2 = 0 or x-7= 0

x=-2 or x=7

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If x + 9 = 5 then x =<br> If x + 9 = -5 then x =
guajiro [1.7K]

Answer:

If x + 9 = 5 then x =- 4

If x + 9 = -5 then x =-14

Step-by-step explanation:

x+9 =5

Subtract 9 from each side

x+9-9 = 5-9

x = -4

x+9 = -5

Subtract 9 from each side

x+9-9=-5-9

x = -14

4 0
3 years ago
Read 2 more answers
What is the GFC of 72 and 36
Mashutka [201]
The GCF of 72 and 36 is: 36

List out the factors of each number (72 and 36), and find the common factors between the two numbers.

Factors of 36: 1, 2, 3, 4, 6, 9, 12, 18, 36
Factors of 72: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72

Looking at the factors above, the common ones are 1, 2, 3, 4, 6, 9, 12, 18, and 36. But... considering we are looking for the "greatest" common factor, our highest number out of the listed ones is 36, making it the greatest common factor of 72 and 36.
6 0
3 years ago
Rolls are being prepared to go to grocery stores. Divide 72 rolls into 2 groups so the ratio is 3 to 5.
tekilochka [14]
To do this, nice it to add 3 and 5, then divide 72 by the result of sum 3 and 5. Finally multiply it by 3 and by 5 to get the result.
Lets do this
3+5=8
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9*3=27  - first group
9*5=45  - second group
8 0
3 years ago
HELP PLEASE!!! MARKING BRAINLIEST
Dimas [21]

Answer:

what you need to know is all lines equal up to 180

so basically it's 180 - 115

which is 65

comment down below if you need more explanation

Step-by-step explanation:

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2 years ago
Please help me out please!!
Greeley [361]

Answer:

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Step-by-step explanation:

5 0
3 years ago
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