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Ivanshal [37]
3 years ago
15

Solve each system by substitution

Mathematics
2 answers:
Evgesh-ka [11]3 years ago
8 0

Answer:

x = 0, y = -5

Step-by-step explanation:

<em>you're given two equations:</em>

y = 4x - 5

y = 2x - 5

<em>to solve, just substitute y in the second equation.</em>

y = 2x - 5

4x - 5 = 2x - 5

<em>now that you have this, solve for x. </em>

4x - 5 = 2x - 5

<em>subtract 2x from both sides</em>

4x - 5 - 2x = 2x - 5 - 2x

2x - 5 = -5

<em>add 5 to both sides</em>

2x - 5 + 5 = - 5 + 5

2x = 0

<em>divide both sides by 2</em>

2x/2 = 0/2

x = 0

<em>now that you know x, substitute x for 0 in the second equation.</em>

y = 2x - 5

y = 2 * 0 - 5

y = 0 - 5

y = - 5

anyanavicka [17]3 years ago
7 0

Answer:

equalize the both sides of the functions

Step-by-step explanation:

4x-5 = 2x-5

4x = 2x

2x = x

2 = 1 meaning phi

there is no answer for this problem

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WILL GIVE BRAINLIEST TO THE RIGHT ANSWER
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At first public inquiry showed there were 637000 women motorcyclists in the US up from 437000 just 8 years ago before it. Find t
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3 years ago
15. Which of the following statements is true? a. If the calculated value of F statistic is higher than the critical value, we r
quester [9]

Answer:

c) is true

Step-by-step explanation:

Given are four statements. Let us check one by one

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False, we reject H0 in favour or alternate

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Not because SSRr is never smaller than SSRur

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4 0
3 years ago
Please help me on this question
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Answer:

DE = 13.4 cm  (to 1 decimal place)

Step-by-step explanation:

Given: ABCD is a square

BC = AC = 12 cm    (opposite sides of a square are congruent)

E is midpoint of BC   (given)

BE = EC  = 12/2 = 6 cm

CD = AB = 12 cm   (opposite sides of a square are congruent)

angle ECD is a right angle (interior angles of a square are 90 deg.)

Consider right triangle ECD

DE = sqrt(EC^2+CD^2)    ............. pythagorean theorem

= sqrt(6^2+12^2)

= sqrt ( 36+144 )

= sqrt (180)

= 2 sqrt(45)

= 13.416 (to three dec. places)

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2 years ago
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