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3 years ago

Please help me I don’t understand this at all

Mathematics

2 answers:

MatroZZZ [7]3 years ago

7 0

Answer:

you can understand it by calculating in decimals

as 3/4 would be 0.75

2/4 would be 0.5

9/8 would be 1.1

9/12 would again be 0.75

and 6/4 would be 1.5

so A C D are correct

ZanzabumX [31]3 years ago

4 0

A, C, and D are the answers.

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Please solve with explanation I’ve been asking all day (this is not a multiple choice question)

Anastaziya [24]

Answer:

a) $SA = 522.9~cm^2$

b) $V_{cone} = 670.2~cm^3$

c) $V_{empty} = 1340.4~cm^3$

Step-by-step explanation:

For a cone,

$SA = \pi r (L + r)$

where L = slant height

$L = \sqrt{r^2 + h^2}$

We have r = 8 cm; h = 10 cm

$L = \sqrt{(8~cm)^2 + (10~cm)^2}$

$L = \sqrt{164~cm^2}$

$SA = (\pi)(8~cm)(\sqrt{164~cm^2} + 8~cm)$

$SA = 522.9~cm^2$

$V_{cone} = \dfrac{1}{3}\pi r^2 h$

$V_{cone} = \dfrac{1}{3}(\pi)(8~cm)^2(10~cm)$

$V_{cone} = 670.2~cm^3$

$V_{cylinder} = \pi r^2 h$

empty space = volume of cylinder - volume of cone

$V_{empty} = V_{cylinder} - V_{cone}$

$V_{empty} = \pi r^2 h - \dfrac{1}{3}\pi r^2 h$

$V_{empty} = (\pi)(8~cm)^2(10~cm) - \dfrac{1}{3}(\pi)(8~cm)^2(10~cm)$

$V_{empty} = 1340.4~cm^3$

3 0

3 years ago

All points from which of the following patterns would be contained on the given graph?

BARSIC [14]

The next number in the linear pattern would be 18

3 0

3 years ago

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A student ticket for a high school basketball game costs $3.00. A monthly game pass costs $20.00. Which inequality represents th

Nana76 [90]

3x greater than or equal to 20
3x = 20
X= 7 games for the pass to be better
3(7)=21

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2 years ago

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Please Help!!!

Alexandra [31]

The answer is 1.715 hope I helped

4 0

3 years ago

3) The sum of two numbers is 17. The difference between five times the first number and three times

Nitella [24]

Answer:

8 and 9.

Step-by-step explanation:

Let the two unknown numbers be a and b.

When added together, they equal 17. In other words:

a + b = 17.

The <em>difference</em> between five times the first number and three times the second number is 13. In other words:

5a - 3b = 13.

We have a system of equations. We can use substitution. From the first equation, we can derive a = 17 - b. Let's substitute this in:

5(17 - b) - 3b = 13

85 - 5b - 3b = 13

-8b = -72

b = 9

a = 17 - b.

a = 17 - 9 = 8.

Thus, the two numbers are 8 and 9.

7 0

3 years ago