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Fofino [41]
3 years ago
7

Dividing fractions with unlike denominators

Mathematics
1 answer:
Anastaziya [24]3 years ago
7 0
The last choice is the answer
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Given the quadratic equation: f(x) = x2+4x-21
ryzh [129]

Answer:

x = - 7, x = 3

Step-by-step explanation:

To find the x- intercepts let f(x) = 0 , that is

x² + 4x - 21 = 0

Consider the factors of - 21 which sum to give the coefficient of the x- term (+ 4)

The factors are + 7 and - 3, since

7 × - 3 = - 21 and 7 - 3 = + 4, then

x² + 4x - 21 = 0

(x + 7)(x - 3) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 7 = 0 ⇒ x = - 7

x - 3 = 0 ⇒ x = 3

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3 years ago
A virus is a<br> A) host. <br> B) producer. <br> C) consumer. <br> D) intracellular parasite.
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Answer:

A virus is a D) intracellular parasite.

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Mr. and Mrs. Jones plan on retiring on 70 percent of their pre-retirement earnings. If they earned $47,000 the last year before
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$32,900

Multiple their current earnings, multiply it by 0.7 (70%), and the result is $32,9000
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3 years ago
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How many bottles does it take to hold 51 fluid ounces of water?
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Answer: It takes 7 bottles to hold 51 fluid ounces of water.

Step-by-step explanation:

51/8 = 6.37

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Help 5y^5/y^3 a) 5y^2 b) 5/y^2 c) 5y^8 d) 5y
WARRIOR [948]

Answer:

a) 5y²

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5 divided by 1 is still 5

y^5/y^3 subtract the exponents since the base is the same

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