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3 years ago

Th sum of three numbers is 64. The second number is 3 more than the first. The third number is

1 answer:

8 0

<span>Three numbers can be defined as x, y, and z.
x + y + z = 64
y = x+3
z = 2x - 11
.
substitute for y and z
x + (x+3) + (2x-11) = 64
4x -8 = 64
4x = 72

x = 18
.
y = x+3 = 21
z = 2x -11 = 2(18) -11 = 36-11 = 25
.
x + y + z = 18 + 21 + 25 = 64
Correct.
.
Answer: The three numbers are 18, 21, and 25.</span>

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You travel from point A to point B in a car moving at a constant speed of 70 km/h. Then you travel the same distance from point

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Answer:

Yes, the average speed for the entire trip from A to C is equal to $80\frac{km}{h}$

Step-by-step explanation:

The average speed of an object is defined as the distance traveled divided by the time elapsed. Velocity is a vector quantity, and average velocity can be defined as the displacement divided by the time. For the special case of straight line motion in the x direction, the average velocity takes the form:

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3 years ago

five times the sum of a number and 27 is greater than or equal to six times the sum of that number and 26. what is the solution

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3 years ago

Read 2 more answers

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Answer:

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Step-by-step explanation:

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y = cost to make laminated signs

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10x + 10y = 30 (2)

Subtract (2) from (3) to solve for x

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