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3 years ago

I have a problem understanding these can someone explain them and give me correct answers!!!!

Mathematics

1 answer:

Artemon [7]3 years ago

4 0

Answer:

What ever negative number is smaller like -1 it goes first.

Step-by-step explanation:

here is an example

-9,-3,-6, and -4.

-3,-4,-6,-9

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Tim installs 50 square feet of his floor in 45 minutes. At this rate how long does it take him to install 495 square feet.

Nina [5.8K]

50 sqft = 45 min
495 sqft = x min

495/50 is 9.9. So we know we multiplied 50 by 9.9 to change it to 495.
Do the same on the other side. 45 x 9.9 = 445.5.

It will take him 445.5 minutes, or 7.425 hours

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3 years ago

A costume costs $32.80. Today it is discounted 30%. How much did the costume cost today?

taurus [48]

Answer:

22.96

Step-by-step explanation:

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3 years ago

Read 2 more answers

What is the value of x?

vivado [14]

Answer:

x = 52/3

Step-by-step explanation:

3x / 7x = (3x+7) / (3x+7+5x-8)

3/7 = (3x+7)/(8x - 1)

Cross multiply

7(3x+7)=3(8x-1)

21x + 49 = 24x - 3

-3x = -52

x = 52/3

5 0

3 years ago

Need help with problem, been stuck on it for a while

Alinara [238K]

Well, if you look at the picture, the "radius" is 1/4, so r = 1/4.

$\bf \textit{diameter of a circle}\\\\
d= 2r\qquad \boxed{r=\frac{1}{4}}\implies d=2\cdot \cfrac{1}{4}\implies d=\cfrac{1}{2}\\\\
-------------------------------\\\\
\textit{circumference of a circle}\\\\
C=2\pi r\qquad \boxed{r=\frac{1}{4}~,~\pi =\cfrac{22}{7}}\implies C=2\left( \frac{22}{7} \right)\left( \frac{1}{4} \right)
\\\\\\
C=\cfrac{2\cdot 22\cdot 1}{7\cdot 4}\implies C=\cfrac{11}{7}\\\\
-------------------------------\\\\$

$\bf \textit{area of a circle}\\\\
A=\pi r^2\qquad \boxed{r=\frac{1}{4}~,~\pi =\cfrac{22}{7}}\implies A=\left( \frac{22}{7} \right)\left( \frac{1}{4} \right)^2
\\\\\\
A=\cfrac{22}{7}\cdot \cfrac{1^2}{4^2}\implies A=\cfrac{22}{7}\cdot \cfrac{1}{16}\implies A=\cfrac{11}{56}$

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4 years ago

In a recipe for apple-grape juice, the ratio of cups of apple juice to cups of grape juice

siniylev [52]

Answer: 2

Step-by-step explanation:

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3 years ago