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3 years ago

Which of the following is the correct factored form of the given equation?

Mathematics

1 answer:

kvasek [131]3 years ago

4 0

Answer:

(2x-5)(2x+5)=0

Step-by-step explanation:

A^2 - B^2 =(A-B)(A+B)...(*)

4x^2 - 25 = 0

(2x)^2 - 5^2=0 (*)

(2x-5)(2x+5)=0

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2 years ago

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A recipe for sparkling grape juice calls for 1.5 quarts of sparkling water and .75 quart of grape juice. A. How much sparkling w

cluponka [151]

Answer: We need to mix 18 quarts of sparkling water with 9 quarts of grape juice.

We need to mix 1.875 quarts of grape juice with 3.75 quarts of sparkling water.

Step-by-step explanation:

Given: A recipe for sparkling grape juice calls for 1.5 quarts of sparkling water and .75 quart of grape juice.

Since, for recipe of sparkling grape juice , they should be used in same proportion.

Let x be the amount of sparkling water need to mix with 9 quarts of grape juice, then

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We need to mix 18 quarts of sparkling water with 9 quarts of grape juice.

Let y be the amount of grape juice need to mix with 3.75 quarts of sparkling water, then

$\frac{3.75}{y}=\frac{1.5}{0.75}\\\Rightarrow\ y=\frac{3.75\times0.75}{1.5}\\\Rightarrow\ y=1.875$

We need to mix 1.875 quarts of grape juice with 3.75 quarts of sparkling water.

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2 years ago

Let f(x) = ............

34kurt

Answer:

So first lets find g(-1)

so we plug in the answers:

-2 * -1 ^2 -4

-2*1-4 = -2-4 =

-6

Now lets solve for f(-2)

-2^2-3

4-3=1

-6+1 = 5

3*5 = 15

Im getting answer of 15 but it shows -15 or something, so I dont know if I got it wrong or if its like a dash then the answer.

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3 years ago

Simplify the following expression: 3m-5n+6m-8n

vichka [17]

$3m - 5n + 6m - 8n \\ 3m + 6m - 5n - 8n \\ 9 m- 13n$

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2 years ago

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