3 years ago

Find the sum and express it in simplest form. (3a2+2a)+(5a2-a-7)

1 answer:

5 0

When you add 3a squared and 5a squared, you get 8a squared. 2a-a=a, with 7 leftover. the final answer would be 8a2 + a - 7

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The number in a fraction that tells how many equal parts are in the hall or in a group

Paul [167]

I think the answer is "the denominator"

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3 years ago

A jar contains 30 red marbles 50 blue marbles and 20 white marbles what is the the theoretical probability of choosing a white m

svlad2 [7]

Theoretical probablity=desiredoutcomes/totalpossibleoutcomes

desired=number of white marbles=20
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so theoretical probablity=20/100=2/10=0.2=20%

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Find two numbers whose sum is 1 and whose difference is -3.<br> Your answer is:

podryga [215]

Answer:

-2 -4

Step-by-step explanation:

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2 years ago

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Please help!!!!!!!!!!!!!!!! Will mark brainliest! thanks!

madreJ [45]

$gpm = 29.7 \times {d}^{2} \times \sqrt{np}$
this formula is used to determine gpm (gallons per minute) of flow with a known hose diameter (d) and nozzle pressure (np). The constant (29.7) is consistent when figuring flow with in gallons with a know pressure expressed in psi (pounds per square inch).

Scenario example: a firefighter is using a handline to fight fire with an 1 3/4 inch line with a nozzle pressure of 100 psi. How much water is the firefighter flowing when fighting fire?

$gpm = 29.7 \times {1.75}^{2} \times \sqrt{100}$

3 0

3 years ago

F(x)=3x+2 and g(x)=-2x-4, find h(x)= f(x)-g(x)

Katena32 [7]

substitute for your equation;

h(x) = f(x) - g(x)

h(x) = (3x + 2) - (-2x -4)

h(x) = 3x + 2 + 2x + 4 (minus and minus = addition)

h(x) = 3x + 2x + 2 + 4 (combine like terms)

h(x) = 5x + 6

Hope that helps! :D

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3 years ago