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3 years ago

What is 3/4 divided by 1/8? Consider drawing a model or using the common denominator method to help you solve the problem.

Mathematics

1 answer:

Kazeer [188]3 years ago

3 0

3/32 if this is right can you please make me the brainiest answer thanks

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Derek has $20 to spend on used books. Hardcover books cost $5 each and paperbacks cost $2 each. Complete the equation which dete

nikdorinn [45]

Answer:

The expression would be 5x + 2y = 20

Step-by-step explanation:

We let x be no of hardcover books, and 5x the cost of those books

Same for paperbacks.

then we add them up to 20.

Done!

8 0

3 years ago

Question 17 please help

kramer

$\sqrt{9x^2} / \sqrt{18y^2}$
after taking sqrt both side

3x/ $\sqrt{9*2y^2}$

3x/3y√2
x/√2y
multiply both denomenator and numerator by√2
√2x/2y

Answer is A

8 0

3 years ago

The radius of the base of a cylinder is decreasing at a rate of 121212 kilometers per second. The height of the cylinder is fixe

WARRIOR [948]

Answer:

7536 $km^3/sec$

Step-by-step explanation:

Given that:

Rate of decreasing of radius = 12 km/sec

Height of cylinder is fixed at = 2.5 km

Radius of cylinder = 40 km

To find:

The rate of change of Volume of the cylinder?

Solution:

First of all, let us have a look at the formula for volume of a cylinder.

$Volume = \pi r^2h$

Where $r$ is the radius and

$h$ is the height of cylinder.

As per question statement:

$r$ = 40 km (variable)

$h$ = 2.5 (constant)

$\dfrac{dV}{dt} = \dfrac{d}{dt}\pi r^2h$

As $\pi, h$ are constant:

$\dfrac{dV}{dt} = \pi h\dfrac{d}{dt} r^2\\\Rightarrow \dfrac{dV}{dt} = \pi h\times 2 r\dfrac{dr}{dt} \\$Putting the values:$\\\Rigghtarrow\dfrac{dV}{dt} = 3.14 \times 2.5\times 2 \times 40\times 12 \\\Rigghtarrow\dfrac{dV}{dt} = 7536\ km^3/sec$

4 0

3 years ago

(+7) x (-3) math intergers

IrinaK [193]

Answer:

-21

Step-by-step explanation:

- * + = -

- * - = +

+ * + = +

Here + * - = -

7* 3 = 21 and sign is -ve

4 0

3 years ago

Read 2 more answers

For a school fundraiser students are selling snack bags and candy bars to raise money on Wednesday the students or 23 snack bags

meriva

Answer:

$1.75

Step-by-step explanation:

The selling for each candy bar may be determined by a set of linear equations. This pair of linear equations may be solved simultaneously by using the elimination method. This will involve ensuring that the coefficient of one of the unknown variables is the same in both equations.

It may be solved by substitution in that one of the variable is made the subject of the equation and the result is substituted into the second equation .

Let the cost of a snack bag be s and that of a candy bar be c, then if on Wednesday the students or 23 snack bags and 36 candy bars that raised $114.75 on Thursday the seventh so 37 snack bags and 36 candy bars that raised $146.25

23s + 36c = 114.75

37s + 36c = 146.25

14s = 31.5

s = $2.25

23(2.25) + 36c = 114.75

36c = 114.75 - 51.75

36c = 63

c = 63/36

= $1.75

3 0

3 years ago