Can someone help me out my grade are bad

Mathematics

1 answer:

ArbitrLikvidat [17]3 years ago

4 0

Answer:

i think you plot point -13

Step-by-step explanation:

let me know if this is incorrect

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15x+12(10-x)=141 make sure to use steps to solve!

goldfiish [28.3K]

Answer: x=7

Step-by-step explanation: First you distribute the 12 to (10-x). That then gives you 15x+120-12x=141. Now you combine like terms. So you do 15x-12x=3x. Your new equation now is 3x+120=141. Subtract 120 from 141 and mark it out. That leaves you with 3x=21. Divide both sides by 3. Your final answer is x=7.

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3 years ago

For which equation is a = 4 not the solution? 9 a = 36 5 a = 54 8 a = 32

Shalnov [3]

The correct answer is 5a = 54

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3 years ago

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two circles are externally tangent to each other. One circle has a diameter of 62 yards and the distance between the centers of

maksim [4K]

Answer:

108 yards

Step-by-step explanation:

Let circle A be the circle with the 62 yard diameter

Let circle B be the circle whose diameter we are trying to solve for.

Externally tangent circles are circles which touch each other and share a common external tangent.
Circle A has a tangent of 62 yards and thus a radius ( half the diameter) of 31 yards.
The distance between the centers of the 2 circles is 85 yards. If you subtract the radius ( distance from the center of the circle to its circumference) of circle A then we'll only be left with the radius of circle B.
85 - 31= 54 yards which is the radius of circle B
To get the diameter: 54 x 2 = 108 yards