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3 years ago

The length of a solar car race track is supposed to be 4.8 meters.

Mathematics

1 answer:

snow_tiger [21]3 years ago

7 0

Answer:

-12.5%

Step-by-step explanation:

A percentage change is computed using ...

percent change = ((new amount) -(original amount))/(original amount) × 100%

We want to find the percentage change from 4.8 m, so we have ...

percent change = (4.2 -4.8)/4.8 × 100% = -.6/4.8×100% = -12.5%

The carpenter made the track 12.5% too short.

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How many solution does the system have 6y+5x=8;2.5x+3y=4

mote1985 [20]

Solve by Elimination:
6y+5x=8
2.5x+3y=4
Multiply the second equations by 2:
5x+6y=8

we know see that both equations are the same line, this means that there is an infinite amount of solutions to the equation

6 0

3 years ago

The sum of two numbers is 65 one is 4 times as large as the others.what are the numbers?

bixtya [17]

let the numbers be n and m

n+m=65

n=4m

So when we put our work in:

4m+m=65

5m=65

m=13

n=52

So therefore your two numbers are 52 and 13!

Hope this helped! °ω°

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3 years ago

12.09 - 03.37 What is 12.09 - 03.37

Bingel [31]

Answer: 8.72
hoped this helped

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2 years ago

Read 2 more answers

Find the area and perimeter. Stuck on this one need help

masya89 [10]

9514 1404 393

Answer:

area: 114 square units
perimeter: 44 units

Step-by-step explanation:

The figure is a trapezoid with bases 12 and 7, and a height of 12. The area formula is ...

A = (1/2)(b1 +b2)h

A = (1/2)(12 +7)(12) = 114 . . . square units area

The length of side AB can be found using the distance formula:

d = √((x2 -x1)^2 +(y2 -y1)^2)

d = √((6 -(-6))^2 +(1 -6)^2) = √(144 +25) = 13

The sum of the side lengths is then ...

13 +7 +12 +12 = 44 . . . units perimeter

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2 years ago

Select the correct answer. Which equation represents a function?

inn [45]

Answer:

Step-by-step explanation:

'x=' create vertical lines which are not functions whereas

'y=' create horizontal lines which are functions

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3 years ago