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3 years ago

Solve the following system by substitution y=-6x+10 -5x + y = -1

Mathematics

1 answer:

pav-90 [236]3 years ago

8 0

Step-by-step explanation:

y = -6x + 10 (1)

-5x + y = -1 (2)

Sub (1) into (2)

-5x + (-6x + 10) = -1

-5x - 6x + 10 = -1

-11x = -11

-11x/-11 = -11/-11

x = 1

Sub x = 1 into (1)

y = -6(1) + 10

y = -6 + 10

y = 4

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Answer:

Step-by-step explanation:

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4 years ago

How many solutions does the equation have?

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4 years ago

(a) suppose that the displacement of an object is related to time according to the expression x = bt2. what are the dimensions o

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3 years ago

The integer x for which |1-x|=3 is

irina1246 [14]

Answer:

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3 years ago

Chris's age is 17 more than one-fourth of Brian's age. How old is Chris if Brian is 27?

dedylja [7]

Answer:

23.75

Step-by-step explanation:

Given that:

Brian's age = 27

Age of Chris is 17 more than one - fourth of Brian's age.

To find:

Age of Chris = ?

Solution:

Let age of Chris = $x$

One - fourth of Brian's age = $\frac{27}{4}$

17 more than One - fourth of Brian's age = $\frac{27}{4}$ + 17

Therefore, we can write the equation as per question statement:

$x = \frac{27}{4} + 17\\\Rightarrow x = 6.75+17\\\Rightarrow \bold{x = 23.75}$

Therefore, Chris is 23.75 years old if Brian is 27.

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3 years ago