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valentina_108 [34]
3 years ago
15

Ann and Joes farther donated $3 for every lap they swam in a swim-a-thon.Ann swam 21 laps, and joe swam 15 laps.Use the. Distrib

utive Property to find the amount of money their farther donated.
Mathematics
1 answer:
MariettaO [177]3 years ago
7 0
3(21+15) is 3*21 and 3*15 which equal 63+45 which is 108 dollars
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klasskru [66]

<em>✽ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ✽</em>

<em>➷ </em>\boxed{-10}<em></em>

<em></em>60+(-30)+40-80<em></em>

<em></em>= 30 + 40 - 80<em></em>

<em></em>= 70 - 80<em></em>

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5 0
3 years ago
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Explain how to use the midpoint formula to prove or disprove that ABCD is a parallelogram. A) Prove that AC and BD do not have t
kow [346]
Selection C is the correct choice.

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Diagonals of a parallelogram bisect each other, hence have the same midpoint.
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3 years ago
Read 2 more answers
20 points and brainlyest to who answers this first in a well format!
djverab [1.8K]

Answer:

in the forth line of the equation it should be this

-6x+10=4x+20

-6x-4x=20-10

-10/-10x=10/-10

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5 0
3 years ago
Help me Please?
k0ka [10]

Answer:

f(9.5) = 558.02.

Step-by-step explanation:

Because it is an exponential function, it can be written: y = (a)(b)^x

Now substitute in the two known points:

72 = (a)(b)^7.5 and

2 = (a)(b)^4 : => since 2 = (a)(b)^2 divide the left side by 2 and the right by (a)(b)^2

72/2 =[(a)(b)^7.5]/[(a)(b)^4]: => the (a) cancels out and b becomes b^(7.5–4)

36 = b^3.5: => To isolate b take the 3.5 root of both sides

{3.5 root}(36) = {3.5 root}(b^3.5)

2.783927 = b

Now to solve for a

2 = (a)(b)^4 => 2 = (a)(2.783927)^4 => 2 = (a)(60.066375) divide both sides by 60.066375 0.0332965 = a

Equation: y = (0.0332965)(2.783927)^x

Now plug in 9.5 for x

(0.0332965)(2.783927)^9.5 = 558.0178525 = 558.02

7 0
3 years ago
Complete the square for x^2+12x-5.
Setler [38]

Answer:

x^2+12x-5=(x+6)^2-41

Step-by-step explanation:

The given expression is x^2+12x-5

Comparing to ax^2+bx+c, we have a=1,b=12,c=-5

We add and subtract (\frac{b}{2a})^2

x^2+12x+6^2-6^2-5

This implies that:

\boxed{x^2+6x+36}-36-5

The expression in the rectangle is a perfect square

(x+6)^2-41

Therefore x^2+12x-5=(x+6)^2-41

3 0
3 years ago
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