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3 years ago

I need help with this one Eight cookies cost $12. At this rate, how much will 10 cookies cost?

Mathematics

1 answer:

mr Goodwill [35]3 years ago

3 0

Answer:

$15

Step-by-step explanation:

12/8 = 1.5 = 1.50 per cookie

1.50* 10 = 15

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Divide.<br> 2x^4-14x3+21x2-6x+5 /x-5

natka813 [3]

Answer: See attached picture

Step-by-step explanation:

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2 years ago

A party rental company chairs and tables for rent. The total cost to rent 2 chairs and 12 tables is $105. The total cost to read

Luden [163]

Answer:

Step-by-step explanation:

2c+12t=105, and 5c+3t=33, subtracting 4 times the second from the first gives you

2c+12t-20c-12t=105-132

-18c=-27 dividing each side by -18

c=1.5, making 2c+12t=105 become

2(1.5)+12t=105

12t=102

t=8.5

So each chair costs $1.50 and each table costs $8.50

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2 years ago

Factor completely 3xy - 3x – 2y + 2

IgorLugansk [536]

Answer:

Step-by-step explanation:

$3xy-3x-2y+2\\(y-1)(3x-2)\\Check\\(y-1)(3x-2)\\Simplify\ and\ we\ get\ our\ question\\(y)(3x)+(y)(-2)+(-1)(3x)+(-1)(-2)\\3xy-2y-3x+2$

珠ɪᴢᴜᴍɪᴿᴬᴳᴱ

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2 years ago

If you get paid $3 for working 25 minutes how much do u get paid for your job per minute

Nina [5.8K]

$3 for 25 minutes, 3 divided by 25

3 : 25 = 0.12 : 1

Therefore, you get paid $0.12 per minute

3 0

3 years ago

Read 2 more answers

Please help and explain questions 20-22

zmey [24]

Hello!

The formula for circumference is $2\pi r$ and the formula for area of a circle is $\pi r^{2}$ . Armed with these formulas, we can begin to find the circumferences and areas of the circles.

20.
C = $2 \pi r$
C = $2 \pi (6.5)$
C = $13 \pi$
C = 13(3.14)
C = 40.8

A = $\pi r^{2}$
A = $\pi (6.5)^{2}$
A = $\pi (42.25)$
A = 132.7

The circumference of the circle is 40.8 in and the area of the circle is 132.7 in².

21.
[Since we are given the diameter for this problem, to find the circumference, we no longer need to multiply the radius by 2 as in $2 \pi r$ because the diameter is the radius × 2. For $\pi r^{2}$ we do need to divide the diameter by 2.]

C = $15.7 \pi$
C = 49.3

A = $\pi r^{2}$
A = $\pi (7.85)^{2}$
A = $61.62 \pi$
A = 193.5

The circumference of the circle is 49.3 in and the area of the circle is 193.5 in².

And that is all there is to it. I hope this helps you! (:

6 0

3 years ago