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3 years ago

Find the smallest number which can be multiplied by 112 to give a square number

Mathematics

1 answer:

Mademuasel [1]3 years ago

4 0

Answer:

That is 7.

Step-by-step explanation:

112 = 2*2*2*2*7

So the smallest number is 7.

2*2*2*2*7*7 is a square number.

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What is the value of |y|+4- y* x if x = 7 and y = -2?

irga5000 [103]

The given expression is

$|y|+4-y\cdot x$

Let's replace x = 7 and y = -2.

$\begin{gathered} |-2|+4-(-2)\cdot7 \\ 2+4+14 \\ 20 \end{gathered}$ <h2>Therefore, the value of the expression is 20.</h2>

8 0

1 year ago

A cylinder has diameter of 4ft and a height of 9ft. Explain whether halving the diameter has the same effect on the surface area

elena55 [62]

Answer:

See Below

Step-by-step explanation:

The surface area of cylinder is given by the formula:

$SA=2\pi r^2 + 2\pi r h$

Where

r is radius ( diameter is 4, so radius is 4/2 = 2)

h is height ( h = 9)

Lets find original surface are:

$SA=2\pi r^2 + 2\pi r h\\SA=2\pi (2)^2 + 2\pi (2) (9)\\SA=8\pi +36\pi\\SA=44\pi$

<u>Halving diameter:</u>

diameter would be 4/2 = 2, so radius would be 2/2 = 1

So, SA would be:

$SA=2\pi r^2 + 2\pi r h\\SA=2\pi (1)^2 + 2\pi (1) (9)\\SA=2\pi +18\pi\\SA=20\pi$

<u>Halving height:</u>

Height is 9, halving would make it 9/2 = 4.5

Now, calculating new SA:

$SA=2\pi r^2 + 2\pi r h\\SA=2\pi (2)^2 + 2\pi (2) (4.5)\\SA=8\pi + 18\pi\\SA= 26\pi$

Original SA is $44\pi$ ,

Halving diameter makes it $20\pi$

Halving height makes it $26\pi$

So, halving diameter does not have same effect as halving height.

5 0

3 years ago

Find the area?????????

Sergeeva-Olga [200]

If we slice this down the middle and fit it together like a puzzle we'll get a rectangle base 9.6/2 and height 4.8+9 so area (9.6/2)(4.8+9) = 66.24 square units.

Choice d

5 0

3 years ago

Read 2 more answers

I need help with this question, please

Xelga [282]

Answer:

Step-by-step explanation:

bh/2

b=5

h=4

=5×4/2

=20/2

=10

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3 years ago

Find the solution for the system of the equation c=-t+2 and c=-4t-4

romanna [79]

Answer:it’s a I think

Step-by-step explanation:

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3 years ago