3 years ago

True or false:

Mathematics

2 answers:

fenix001 [56]3 years ago

3 0

Answer:

True ;]

Step-by-step explanation:

ad-work [718]3 years ago

3 0

True it is true hope this helps

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An engineer is planning a new water pipe installation. The circular pipe has a diameter of d=20\text{ cm}d=20 cmd, equals, 20, s

aivan3 [116]

Answer: The answer is 314.28 cm² (approx.).

Step-by-step explanation: Given that an engineer is going to install a new water pipe. The diameter of this circular pipe is, d = 20 cm.

We need to find the area 'A' of the circular cross-section of the pipe.

Given, diameter of the circular section is

$\textup{d}=20~\textup{cm}.$

So, the radius of the circular cross-section will be

$\textup{r}=\dfrac{\textup{d}}{2}=\dfrac{20}{2}=10~\textup{cm}.$

Therefore, cross-sectional area of the pipe is

$\textup{A}=\pi \textup{r}^2=\dfrac{22}{7}(10)^2=\dfrac{2200}{7}=314\dfrac{2}{7}=314.28~.~.~.~\textup{cm}^2.$

Thus, the answer is 314.28 cm² (approx.).

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4 years ago

Can someone help me with these word problems?

Jobisdone [24]

1) $375
500 *.25= 125
500-125= 375

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(3/8)* 32= 12 BOYS in class

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X=25 ( subtract 87 from 62)

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3 years ago

What is the vertex of the parabola given by y= -(x-2)^2-1?

melisa1 [442]

The vertex is (2,-1). Thats your answer.

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3 years ago

-2y + 6 = -12<br><br> Please help me what is Y

patriot [66]

Answer:

y = 9

Step-by-step explanation:

-2y + 6 = -12

-6 -6

-2y = -18

divide both sides by -2

y = 9

Hope this Helps!!!

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A 16 N force is applied to an object and 96 J of work is done. How far was the object moved?

Montano1993 [528]

Hello,

T=F*x==>x=T/F=96/16=6 (m)

T is the word (travail in french)
F is the force applied
x is the deplacement.

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4 years ago

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