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VikaD [51]
4 years ago
7

What are the steps into solving this problem

Mathematics
1 answer:
Aleks04 [339]4 years ago
5 0
I hope this helps you

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What algebraic expression must be added to the sum of 3x2 +4x+8 and 2x2−6x+3 to give 9x2−2x−5 as the result?
vesna_86 [32]

Answer:

4x^2-16

Step-by-step explanation:

-This is an addition/subtraction problem.

#We subtract the sum of the first two expression from the third expression:

\#Add \ first \ two\\\\=3x^2 +4x+8 +2x^2-6x+3\\\\=5x^2-2x+11\\\\\# Subtract\ from \ the \ third\\=(9x^2-2x-5)-(5x^2-2x+11)\\\\=9x^2-2x-5-5x^2+2x-11\\\\=4x^2-16

Hence, the expression 4x^2-16 must be added to the first two.

7 0
3 years ago
Use Pythagorean theorem to solve the following problems.
katovenus [111]
The Pythagorean theorem tells you that for legs a and b, and hypotenuse c this relationship holds:
  c² = a² + b²

It can be useful to make a couple of rearrangements of this relation.
  c = √(a² +b²)
  a = √(c² -b²)

1. c = √(10² + 8²) = √164 = 2√41

2. a = √(26² - 10²) = √576 = 24

_____
It doesn't matter which leg you call "a" and which one you call "b", unless they are specifically marked on the triangle. Then use the marks you are given.
4 0
4 years ago
You have are fat<br> a) YES<br> b) no
alina1380 [7]
No but are you fat ???
8 0
3 years ago
Heeeeeeeeeeeeeellllllllppp
USPshnik [31]

Answer:

Step-by-step explanation:

let price of  one pretzel=x

price of one soda=y

3x+4y=11.25   ...(1)

5x+2y=8.25    ...(2)

multiply by 2

10x+4y=16.50   ...(3)

(3)-(1) gives

7x=5.25

x=0.75

from (1)

3(0.75)+4y=11.25

2.25+4y=11.25

4y=11.25-2.25

4y=9

y=9/4=2.25

cost of one pretzel=$0.75

cost of one soda=$2.25

3 0
3 years ago
how to find the volume of a paper bag with the width of 6 inches, a BASE of 13 inches , and a height of 24 inches?
dimulka [17.4K]
Use the calculator and multiply all three of the numbers.
3 0
3 years ago
Read 2 more answers
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