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3 years ago

What is the solution to this equation?

Mathematics

2 answers:

wlad13 [49]3 years ago

8 0

Answer:

$\huge{ \fbox{ \sf{x = 21}}}$

Option C is correct.

Step-by-step explanation:

$\underline{ \underline{ \mathfrak{Let's \: solve}}} :$

$\bigstar{ \sf{ \: \: x - 4 = 17}}$

$\text{Step \: 1} : \sf{Move \: 4 \: to \: right \: hand \: side \: and \: change \: its \: sign}$

$\longrightarrow{ \sf{x = 17 + 4}}$

$\text{Step \: 2} : \sf{Add \: the \: numbers}$

$\longrightarrow{ \sf{x = 21}}$

The value of x is 21

Hope I helped!

Best regards! :D

~ $\text{TheAnimeGirl}$

ycow [4]3 years ago

3 0

Answer:

D. x = 21

Step-by-step explanation:

x - 4= 17

Step 1: Add 4 to both sides

x - 4= 17

+4 +4

x = 21

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Somebody please help! Marked Brainliest!

olga nikolaevna [1]

Answer:

Part A:

The surface area of a cylinder is given by

A= 6πr² if h= 2r

Part B:

Total Cost of covering the cylinder = Rate *2πrh + rate*2πr²

Cost of covering only the side = Rate *2πrh

Step-by-step explanation:

Part A:

The surface area of a cylinder is given by

A= 2πrh + 2πr²

Where h= height and radius = r

But we have the height twice as radius so h= 2r

So putting h= 2r we get

A= 2πr(2r) + 2πr²

A= 4πr² + 2πr²= 2πr²(2+1) = 2πr²(3)= 6πr²

Part B:

Cost = Rate * area of the wall + rate * area of the top and bottom

Cost = Rate *2πrh + rate*2πr²

Where area of the top and bottom= πr² +πr² =2 πr²

and area of the side = 2πrh

Multiplying both with the rate and then adding would give the total cost of materials needed to cover the outside of the cylinder and from top and bottom as well.

If you do not need to cover top and bottom then the expression would be

Cost of covering only the side = Rate *2πrh

Part C:

Already done above.

4 0

2 years ago

Find the circumference of a circle whose. A. Diameter is 14cm B. Radius is 3.5cm

Nikitich [7]

Hello!

Circumference of a Circle

C=πd

C=2πr

Plug in the values

C=14π

C≈44 cm

C=2π×3.5

C≈22 cm

Hope everything is clear.

Let me know if you have any questions!
#KeepLearning

;-)

5 0

2 years ago

If f(x)=x^1/2-x and g(x)=2x^3-x^1/2-x, find f(x)-g(x)

inn [45]

X^1/2 - x
-2x^3 - x^1/2 - x

-2x^3 - 2x
i think this is it

6 0

3 years ago

Read 2 more answers

Rectangle A measures 10 inches by 8 inches. Rectangle B is an enlarged copy of Rectangle A. Select all of the measurement pairs

Fudgin [204]

Answer:

See Explanation

Step-by-step explanation:

Given

Rectangle A:

$Length: 10\ in$

$Width: 8\ in$

Required

Determine the possible dimensions of Rectangle B

The question has missing options; however, the question can still be solved.

Rectangle B being an enlarged copy of A implies that the dimension of A A is enlarged in equal proportion to form B

Take for instance, the measurements of Rectangle B are

$Length: 15 in$

$Width: 12 in$

Divide the corresponding lengths of B by A to get the enlargement ratio

$Ratio = \frac{B}{A}$

For length:

$Ratio = \frac{15}{10}$

$Ratio = 1.5$

For width

$Ratio = \frac{12}{8}$

$Ratio = 1.5$

Notice that both ratios are the same.

For this measurement of B, we can conclude that B is an enlargement of A

Assume another measurements for B

$Length: 20\ in$

$Width: 10\ in$

Calculate Ratios

$Ratio = \frac{B}{A}$

For length:

$Ratio = \frac{20}{10}$

$Ratio = 2$

For width

$Ratio = \frac{10}{8}$

$Ratio = 1.25$

Notice that, both ratios are not equal.

For this measurement of B, we can conclude that B is not an enlargement of A

Conclusively, all you have to do is: determine the ratios of the dimensions of B to A, if the result are equal then B is an enlarged copy of A; if otherwise, then B is not an enlarged copy

5 0

3 years ago

How many 1/2s are in 4?

WARRIOR [948]

Answer:

Step-by-step explanation:

5 0

2 years ago