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zavuch27 [327]
3 years ago
5

An unknown number y is 15 more than an unknown number x. The number y is also x less than 8. The equations to find x and y are s

hown below.
y = x + 15
y = −x + 8

Which of the following statements is a correct step to find x and y?

Multiply the equations to eliminate y.
Add the equations to eliminate x.
Write the points where the graphs of the equations intersect the x-axis.
Write the points where the graphs of the equations intersect the y-axis.
Mathematics
2 answers:
melomori [17]3 years ago
6 0
Add the equations to eliminate x
charle [14.2K]3 years ago
5 0

Answer:

the answer is B. add all the equations to eliminate x. its true. i did the test and  i defiantly got it right.    (brainliest would b appreciated)

Step-by-step explanation:

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mrs_skeptik [129]

x^(2/5) + x^(1/5) + 1 = 3

subtract 3 from each side

x^(2/5) + x^(1/5) -2=0

let m = x^1/5

m^2 +m -2 =0

(m - 1) (m + 2) = 0

using the zero product property

m=1  m=-2

replace m = x^1/5

x^1/5 =1  and x^1/5 = -2

take everything to the 5th powr

x^ 1/5 ^ 5 = 1^5  and x^ 1/5 ^ 5 = -2 ^ 5

x = 1                    and x = -32

Choice C

C. -32, 1

4 0
4 years ago
Please help! first to answer is brainleist and 5 star! Please answer all!​
Nadusha1986 [10]
The answers are 1) B 2) B 3) A
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Answer:

60 combinations

Step-by-step explanation:

3 × 4 × 5 = 60

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Answer:

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