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3 years ago

20 POINTS!!! HELP QUICK

Mathematics

1 answer:

leva [86]3 years ago

8 0

The volume of the given shape will be equal to V=2827.42 cubic inches.

<h3>What is volume?</h3>

The volume is defined as the space occupied by the object in the three-dimensional plane. It requires three coordinates to find the volume of any object.

Here it is given in the question that:-

Radius of the semicircle=12 inches

Height of the cylinder =13 inches.

Now the volume will be calculated as:-

Total volume of the figure will be the sum of the Volume of the semicircle and the Volume of the cylinder.

= 2πr³+πr²l

= 2xπx(6)³+πx(6)²x13

=1357.16+1470.26

=2827.42 Cubic inches

Hence the volume of the given shape will be equal to V=2827.42 cubic inches.

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15% is 75 of what number .NOT 75% is 15

Scorpion4ik [409]

15 is 75 percent of the number 20 because 5 x 4 = 20 and 5 x 3 = 15. So look at 5 as 25% so multiply 5 x 3 to get 15

6 0

3 years ago

Select all the ratios that are equivalent to the ratio 12:3. explain how you know( show multiplication or division)

grigory [225]

Answer:

C 4:1

D 24:6

F 1200:300

Step-by-step explanation:

The given ratio is $\frac{12}{3}$

Simplify

Divide by 3 both numerator and denominator

$\frac{4}{1}$

Verify each case

case A) we have

$\frac{6}{1}$

Compare with the given ratio

$\frac{6}{1} \neq \frac{4}{1}$

therefore

The ratio is not equivalent

case B) we have

$\frac{1}{4}$

Compare with the given ratio

$\frac{1}{4} \neq \frac{4}{1}$

therefore

The ratio is not equivalent

case C) we have

$\frac{4}{1}$

Compare with the given ratio

$\frac{4}{1}=\frac{4}{1}$

therefore

The ratio is equivalent

case D) we have

$\frac{24}{6}$

Simplify

Divide by 6 both numerator and denominator

$\frac{4}{1}$

Compare with the given ratio

$\frac{4}{1}=\frac{4}{1}$

therefore

The ratio is equivalent

case E) we have

$\frac{15}{6}$

Simplify

Divide by 3 both numerator and denominator

$\frac{5}{2}$

Compare with the given ratio

$\frac{5}{2} \neq \frac{4}{1}$

therefore

The ratio is not equivalent

case F) we have

$\frac{1,200}{300}$

Simplify

Divide by 300 both numerator and denominator

$\frac{4}{1}$

Compare with the given ratio

$\frac{4}{1}=\frac{4}{1}$

therefore

The ratio is equivalent

case G) we have

$\frac{112}{13}$ ----> irreducible

Compare with the given ratio

$\frac{112}{13} \neq \frac{4}{1}$

therefore

The ratio is not equivalent

3 0

3 years ago

The rule r y-axis R 0,90^ (x,y) is applied to triangle ABC . Which triangle shows the final image?

NemiM [27]

Answer:

Step-by-step explanation:

Given triangle ABC with vertices at points A(2,-4), B(4,-4) and C(4,-2).

1. Rotate this triangle anticlockwise by 90° angle over the origin. This rotation has the rule

$(x,y)\rightarrow (-y,x),$

then

$A(2,-4)\rightarrow A'(4,2)\\ \\B(4,-4)\rightarrow B'(4,4)\\ \\C(4,-2)\rightarrow C'(2,4)$

2. Reflect triangle A'B'C' across the y-axis. This reflection has the rule

$(x,y)\rightarrow (-x,y),$

then

$A'(4,2)\rightarrow A''(-4,2)\\ \\B'(4,4)\rightarrow B''(-4,4)\\ \\C'(2,4)\rightarrow C''(-2,4)$

These are vertices of triangle 1

5 0

3 years ago

Read 2 more answers

Isaac purchased a pair of skates at a 15% off sale.

deff fn [24]

Let
x-------------> original price of the skates

we know that
15% of x is $19.50
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0.15x=19.50---------> x=19.50/0.15-----------> x=$130

the answer is
the original price of the skates was $130

8 0

4 years ago

HELP ASAP TIMED!!!!!!!!!!!!!!!!!!!!!!!

pochemuha

Answer:

Step-by-step explanation I think a

4 0

3 years ago