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Leno4ka [110]
3 years ago
12

Use substitution to solve the system. y = 2x+8 -3x+2y = 13

Mathematics
1 answer:
Lisa [10]3 years ago
4 0

Step-by-step explanation:

Use substitution to solve the system.

y = 2x+8______equation1

-3x+2y = 13______equation2

sub y into equation 2

-3x+2(2x+8)=13

-3x+4x+16=13

x+16=13

x=13-16

x=-3

sub X into equation 1

y=2x+8

y=2(-3)+8

y= -6+8

y=2

x= -3 y=2

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so let’s start by solving the equations:
6 + 4 = 10
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3(6) - 10 = 8

then order then look at what each of the sides is opposite to:

10 = A
9 = B
8 = C

so from smallest to largest the angles are C, B, A
6 0
2 years ago
Which is the value of the rational expression 6-x/x+5 when x=2
Allisa [31]

Answer:

4/7

Step-by-step explanation:

6-x/x+5 let us take x=2

6-2/2+5=4/7

8 0
3 years ago
vimesha drove 232 miles in 4 hours. at this rate, how far could she drive in 7 hours? what is her rate of speed in miles per hou
IrinaVladis [17]

Answer:  distance = 406 miles

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Step-by-step explanation:

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7 hours - 232/ 4 x 7 = 406 miles

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8 0
3 years ago
HELP PLSS
atroni [7]

The balloon reaches a height of 7 feet at 0.1 seconds and 2.13 seconds

<h3>How to determine the time the balloon is at the height?</h3>

The equation of the function is given as

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The above equation is a quadratic equation

When the balloon is at a height of 7 feet, we have

h(t) = 7

So, we have the following equations

h(t)= -16t^2 + 35t + 5

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Next, we plot the equations on a graph (see attachment)

The equations intersect at

t = 0.059 and t = 2.129

Approximate

t = 0.1 and 2.13

Hence, the times are 0.1 seconds and 2.13 seconds

Read more about quadratic equation at

brainly.com/question/15709421

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8 0
1 year ago
On picture day, 3 times as many girls wore dresses rather than pants. If there are 12 girls in the class, how many wore a dress?
katrin2010 [14]

Answer:

36

Step-by-step explanation:

3 * 12 = 36

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3 0
2 years ago
Read 2 more answers
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