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3 years ago

Use substitution to solve the system of equations.. PLEASE ANSWER AND EXPLAIN..asap

Mathematics

2 answers:

Leya [2.2K]3 years ago

4 0

Answer:

the answer to number one is (13.3,2)

the answer to number two is (2,-2)

Step-by-step explanation:

Nataliya [291]3 years ago

4 0

1. -5+y=-3
3x-8y=24

5+2=-3
3x40/3 -8x2 =24

-3=-3
24=24
(x,y) = (40/3, 2)

2. -3x-4y=2
x+2y=-2

-3(-2-2y) -4y=2
y=2

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

(x,y) (2.-2)

-3x2-4x(-2) =2
2+2 x(-2) =-2
2=2
-2=-2
(2,-2)
hope this helps:)

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3 years ago

Two angles in a triangle are 30° and 35°. What type of angle is the other?

77julia77 [94]

The third angle is obtuse.
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3 years ago

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2. Create a linear function that has a rate of change of 3 and a solution at (6, 12).

Ksivusya [100]

Answer:

$y = 3x - 6$

Step-by-step explanation:

A linear function has the following format:

$y = ax + b$

In which a is the slope(rate of change) and b is the y-intercept, that is, the value of y when x = 0.

Rate of change of 3

This means that $a = 3$

$y = 3x + b$

A solution at (6, 12).

This means that when x = 6, y = 12. So

$y = 3x + b$

$12 = 3*6 + b$

$b = -6$

The linear function is:

$y = 3x - 6$

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3 years ago

An irregular polygon is shown below:

elena-14-01-66 [18.8K]

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3 years ago

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Simplify the expression

ollegr [7]

Answer:

Step-by-step explanation:

$\dfrac{x^2-8x+12}{x^2-7x+10}\\\\x^2-7x+10\ne0\ \iff\ x=\frac{7\pm\sqrt{49-40}}{2}\ne0\ \iff\ x\ne5\ \wedge\ x\ne2\\\\\\\dfrac{x^2-8x+12}{x^2-7x+10}=\dfrac{x^2-2x-6x+12}{x^2-2x-5x+10}=\dfrac{x(x-2)-6(x-2)}{x(x-2)-5(x-2)}=\\\\\\ =\dfrac{(x-2)(x-6)}{(x-2)(x-5)}=\dfrac{x-6}{x-5}\\\\\\f(x)=x-6\\\\g(x)=x-5$

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3 years ago