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Leona [35]
3 years ago
5

How do you determine whether to use substitution or elimination. give an example of a system that you would solve using each met

hod?
Mathematics
1 answer:
nadezda [96]3 years ago
3 0
You determine which one to use by seeing which one would be easier

elimination: 5x + 7y = 2
                  -5x + 6y = 6

substitution: y = 9x + 5
                  2y = 7x + 2
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How do you round 47 to the nearest ten
musickatia [10]

the nearest ten would be 50, Just go up till the next 10,20,30,40,50,60,70.etc. all of them are by tens

40-44 is going down 45-49 is going up


4 0
3 years ago
Read 2 more answers
If California has 6,480 residents and each resident produces about 182 cubic feet of garbage per year, how long can the landfill
svetoff [14.1K]

Answer:

0

Step-by-step explanation:

Just 4 people per year would overflow the landfill, how would it survive 6480 people?

5 0
3 years ago
A hyena can run one over four mile in 22.5 seconds. Which of the following correctly shows this rate as miles per hour?
UNO [17]
Wouldnt you divide ? so itll be 5.62 
8 0
3 years ago
You work for a packaging company. The total weight of a container and its contents is 48 pounds. The contents of the container
choli [55]

Answer:

9/39

Step-by-step explanation: just took the quiz on ed 2020

7 0
3 years ago
What is:<br> <img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B4x%5E%7B2%7D%20-20x%2B25%20" id="TexFormula1" title=" \sqrt{4x^{2} -
Firdavs [7]

We are given :

\sqrt{4x^{2}-20x+25}

Step 1: factor the part inside square root

The function given inside square root is of quadratic form.

So let us try to factorise it using AC method.

Here A*C = 4*25 = 100

so we have to find factors of 100 that add up to give -20.

the two factors are -10 and -10.

Rewriting the function :

4x^{2} -20x+25

=4x^{2} -10x-10x+25

=2x(2x-5) - 5(2x-5)

=(2x-5)^{2}

Step 2:

Now we take square root of the factorised form

\sqrt{(2x-5)^2}

= 2x-5

Answer : (2x-5)

3 0
3 years ago
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