Answer:
(15/2, -5/2)
Step-by-step explanation:
1. Sub x=5y+20 into 2x+2y=10 and simplify as shown below.
2(5y+20)+2y=10
10y+40+2y=10
12y+40=10
12y=-30
y=-30/12
y=-5/2
2. Sub in y=-5/2 into 2x+2y=10 to find x and simplify as shown below.
2x+2(-5/2)=10
2x-5=10
2x=15
x=15/2
Answer:
$12x + $33.75
Step-by-step explanation:
Okay so if you have (16x + 58.75) - (4x + 25)
first you add the common variables so... 16x - 4x = 12x
and 58.75 - 25 = 33.75
And 1 the most common mistake is that people add 25 and 58.75. The reason you don't do this is because the two equations are subtracting or trying to find the difference regardless of whether the numbers are positive or not. Although if they were negative numbers you would be adding.
I hope this helps :)
<span>40 + 1 + 0.3 + 0.02 (: hope this helped..<em><u>
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(-1.-2) and (3,6)
Look at the picture i uploaded.
If there are more problems like this, use Desmos Math. It's a resources where you can graph equations and points.
Angle of elevation is 15 degrees and we're trying to solve for the hypotenuse of the right triangle given the adjacent is 7.11 m.
We could use primary trig ratios to solve - COS.
Let x represent the length of the ramp (hypotenuse)
Cos15= ADJACENT/HYPOTENUSE
Cos15= 7.11/x
x=7.11/cos15
x=7.36 m
<span>Therefore, the ramp is 7.36 m in length.
I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
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