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3 years ago

Solve the equation -12 = x - 1 + 28

Mathematics

2 answers:

Savatey [412]3 years ago

6 0

X=15 since you subtract 1 from 27 then subtract 12 from 27 and you get 15

Goryan [66]3 years ago

5 0

Step-by-step explanation:

-28-12=x-1

-40=x-1

x=39

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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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3 years ago

What is the product 3x5(2x2+4x+1)

lesya692 [45]

Answer:

$6x^7+12x^6+3x^5$

Step-by-step explanation:

The given expression is:

$3x^5(2x^2+4x+1)$

We expand the parenthesis using the distributive property to obtain;

$3x^5(2x^2)+3x^5(4x)+3x^5(1)$

Recall that;

$a^m\imes a^n=a^{m+n}$

We apply this property and multiply out the constant terms to obtain;

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3 0

3 years ago

WILL MARK BRAINLIST

Deffense [45]

Answer:

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Step-by-step explanation:

4y= -108

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2 years ago

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gulaghasi [49]

Answer:

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Step-by-step explanation:

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3 years ago

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Irina18 [472]

Answer:

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Step-by-step explanation:

8 0

2 years ago

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