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3 years ago

Which of the following equations represent linear functions?

Mathematics

1 answer:

Papessa [141]3 years ago

4 0

Answer:

$y=-2; y=4(2x)-3$

Step-by-step explanation:

Linear Equations do not have the value of x squared. They also shouldn't have the x value taken by the square root.

The second and third equations would be graphed as non-linear functions.

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ratio of a rectangle's length to its width is 4:7. If the longer side is 31.5in., find the width, the perimeter, and the area of

Nikitich [7]

Answer:

Step-by-step explanation:

Ratio of length : width = 4 : 7

Length = 4x

Width = 7x

Longer side = 31.5 in

⇒ 7x = 31.5

Divide both sides by 7

x = 31.5/7

x = 4.5

length = 4x

= 4*4.5

l = 18 in

width = 31.5

w = 31.5 in

$\boxed{ \text {Perimeter of rectangle }= 2*l + 2*w}$

= 2*18 + 2*31.5

= 36 + 63

= 99 in

$\boxed{ \text{Area of rectangle = l*w}}$

= 18*31.5

= 567 in²

3 0

1 year ago

maria saves $25.00 a month and her sister Luisa saves $37.50 a month. How many months will it take for Luisa to save exactly $10

damaskus [11]

37.50 -25.00= 12.50 so Luisa makes 12.50 more a month than Maria. Divide 100/12.5 = 8. It will take Maria 8 months to be exactly $100 ahead of Luisa.

3 0

3 years ago

M is directly proportional to r squared

Nesterboy [21]

Answer:

m=84

r:m = 1:7

therefore when r= 1 then M=14

$r = 12 \\ m = 7 \times 12 \\ m = 84$

I think that's how you do it

5 0

2 years ago

Question 16

Nadya [2.5K]

Answer:

8milliliters for 40 pounds

Step-by-step explanation:

7/35=0.2

0.2*40=8

8 0

2 years ago

Joey wrote a book about his favorite Author.

Rasek [7]

Answer: $6000

Step-by-step explanation:

Multiply the cost of the book by the decimal equivalent of 12% (25 x .12). this equal 3 dollars per book. 2,000 copies of the book were sold, so you would multiply 2000 by 3. 2000 x 3 = 6000

7 0

3 years ago