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stiv31 [10]
3 years ago
5

What is the solution to the system of equations? 5x + 4y = 8 x - 2y = 10

Mathematics
1 answer:
romanna [79]3 years ago
4 0
Double the second equation (multiply by 2)...
2(x-2y=10)
2x-4y=20

Bring in the second equation and add the equations:
(2x-4y=20)
+ (5x+4y=8)

7x=28
x=4

Plug in x into one of the equations to get y...
(4)-2y=10
-2y=6
y=-3

(6,-3)

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Can anyone help me on this thanks
ale4655 [162]
The answer is 17 stuffed animals!
4 0
4 years ago
Has an x-intercept of (4,0) and a y- intercept of (0,-2)
Mazyrski [523]

Just to be different we'll start with intercept intercept form which says the line through x intercept (a,0) and y intercept (0,b) is

\dfrac x a + \dfrac y b = 1

Through (4,0) and (0,-2) that's

\dfrac{x}{4} + \dfrac{y}{-2} = 1

Multiply through by the common denominator of 4 for standard form:

x - 2y = 4

For slope intercept form we solve for y

-2 y = -x + 4

y = (1/2) x - 2

We see our slope is (1/2) and we go through (4,0) so point slope form is

y - 0 = (1/2)(x - 4)

y = (1/2)(x-4)

5 0
3 years ago
9. Solve the system of equations using substitution.<br>y = 2x - 10<br>y = 4x - 8​
krok68 [10]
Since they’re both in standard form and they both say that y is equal to something, you just have to set them up with one another
2x-10=4x-8
Subtract 2x
-10=2x-8
Add 8
-2=2x
Divide by 2
-1=x
x=-1
Check it by inserting it
2(-1)-10=4(-1)-8
-2-10=-4-8
-12=-12
So x=-1 is the answer
3 0
3 years ago
Read 2 more answers
in a survey of 1500 people who owned a certain type of car, 1050 said they would buy that type of car again. what percent of the
Reptile [31]

Answer:

70%

Step-by-step explanation:

Since 1050 were satisfied.....1050/1500=.7 tun into percent u get 70%

3 0
3 years ago
Help me please. good day
Vladimir79 [104]

Answer:

A. 8

Step-by-step explanation:

you do 8/25 and it gives you 0.32

hope this helps :)

5 0
3 years ago
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