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Trava [24]
4 years ago
9

(-7x^2+3) + (4x^2+2x-1); Find the sum or difference.

Mathematics
1 answer:
ivann1987 [24]4 years ago
4 0
(-7x² + 3) + (4x² + 2x - 1)

-7x² + 3 + 4x² + 2x - 1          

(-7x² + 4x²) + (3 - 1) + 2x      collect like terms

-3x² + 2x + 2     

hope this helps, God bless!
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The state of Maryland charges a 6% sales tax on most merchandise sold. you purchase a new shirt for 25% how much do you pay?
Yuri [45]
If your question is 25 dollars for the shirt then the ansewer is $26.5 hope this helps.
3 0
3 years ago
How many cubic feet of water can the following in ground swimming pool hold
guapka [62]

Answer:

do length times width times height and see what you get if your answer is not on there split the figure into 2 shapes and do l*w*h to both and add you 2 figures together then see if you have your answer.

Step-by-step explanation:

do length times width times height and see what you get if your answer is not on there split the figure into 2 shapes and do l*w*h to both and add you 2 figures together then see if you have your answer. hope that helps!

3 0
3 years ago
21) Find x. Show your work.
shepuryov [24]

Answer:

x = 21

Step-by-step explanation:

Givens:

Every triangle's interior angles add up to 180°

The triangle has a right angle.

The triangle is isosceles (two equal sides and two equal angles)

Let's make an equation with the information we have already.

2 × (2x + 3) + 90 = 180

4x + 6 + 90         = 180

4x + 96                = 180

4x                         = 84

x                           = 21

4 0
3 years ago
Which is not a rational number?
musickatia [10]

Answer:

A real number that is not rational is called irrational. Irrational numbers include √2, π, e, and φ. The decimal expansion of an irrational number continues without repeating. Since the set of rational numbers is countable, and the set of real numbers is uncountable, almost all real numbers are irrational.

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Find the hypotenuse of a right triangle whose sides are 12 and 16.
elena55 [62]

Answer: 20

Step-by-step explanation:

a^2+b^2=c^2 (pythagorean theorem where c is hypotenuse)

12^2+16^2=c^2

144+256=c^2

400=c^2

square root of 400=20

4 0
3 years ago
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