2 years ago

A lifeguard received 15

Mathematics

1 answer:

Anarel [89]2 years ago

7 0

Answer:

Step-by-step explanation:

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2 years ago

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stepan [7]

Answer:

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Step-by-step explanation:

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3 years ago

Solve F=D+Drt for t.....

Anuta_ua [19.1K]

Answer:

$t = \frac{-D+F}{Dr}$

Step-by-step explanation:

Step 1: Flip the equation.

$Drt + D = F$

Step 2: Subtract D from both sides.

$Drt + D - D = F - D$
$Drt = -D + F$

Step 3: Divide both sides by Dr.

$\frac{Drt}{Dr} = \frac{-D+F}{Dr}$
$t = \frac{-D+F}{Dr}$

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2 years ago

When completing the square, what value must you add to both sides of the equation to create a perfect square trinomial?

Sergeu [11.5K]

Notice that half of the coefficient of x is (1/2)(-4), or -2.

Then x^2 - 4x becomes
x^2 - 4x + 4 - 4 = 0, or (x -2)^2 = 4. Then x = -2 plus or minus 2, and the two roots are 0 and -4.

Thus, add 4 to both sides to obtain x^2 - 4x + 4 = 4.

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3 years ago

Mai will spend more than $23 on gifts. So far, she has spent $15. What are the possible additional amounts she will spend? Use c

mote1985 [20]

Answer:

c = ≥ (23 - 15) therefore c = ≥ 8

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3 years ago