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3 years ago

Based on the figure below, what is the value of x? BRAINLIEST PLEASE HELP SHOW WORK

Mathematics

2 answers:

Semenov [28]3 years ago

7 0

Answer:

Step-by-step explanation:

5x+15+20=90

5x+35=90

-35 from both sides

5x=55

divide both sides by 5

x=11

Natasha_Volkova [10]3 years ago

6 0

Answer:

x = 11

Step-by-step explanation:

→ Make equation

5x + 15 + 20 = 90

→ Simplify

5x + 35 = 90

→ Minus 35 from both sides

5x = 55

→ Divide both sides by 5

x = 11

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Explain ways on how to divide 52 from 8

raketka [301]

52÷8=6.5

This is because 8 can go into 52, six times then your decimal pops up.

8 0

3 years ago

All of the following are rational numbers: .5, 7, V16 O True O False

wel

Answer:

Your answer is: A) True

( I say true because 1) .5 2) 7 are rational) ( I dont know about v16, if that is what it is supposed to say, then I cant quite tell)

A rational number is any integer, fraction, terminating decimal, or repeating decimal.

Step-by-step explanation:

Hope this helped : )

4 0

3 years ago

Explain why the function is discontinuous at the given number

Blizzard [7]

For $f$ to be continuous at $x=5$ , we need to have

$\displaystyle\lim_{x\to5}f(x)=f(5)$

Note that $x\to5$ means that $x\neq5$ , but that $x$ is *approaching* 5. We're told that for $x\neq5$ , we have

$f(x)=\dfrac{x^2-5x}{x^2-25}$

We can write

$\dfrac{x^2-5x}{x^2-25}=\dfrac{x(x-5)}{(x+5)(x-5)}=\dfrac x{x+5}$

and the limit would be

$\displaystyle\lim_{x\to5}\frac x{x+5}=\dfrac5{5+5}=\dfrac5{10}=\dfrac12\neq1=f(5)$

and so $f$ is discontinuous.

5 0

3 years ago

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.).

4 0

3 years ago

PLEASE HELP me with the magic square

defon

Fill in each slot in the square with variables a, b, c, d, and e, in order from left-to-right, top-to-bottom. In a magic square, the sums across rows, columns, and diagonals all add up to the same number called the magic sum.

The magic sum is -3.9, since "diagonal 2" (bottom left to top right) has all the information we need:

3 + (-1.3) + (-5.6) = -3.9

Use this to find the remaining elements

row 1:

a + b + (-5.6) = -3.9

row 2:

c + (-1.3) + d = -3.9

row 3:

3 + e + 0.02 = -3.9

column 1:

a + c + 3 = -3.9

column 2:

b + (-1.3) + e = -3.9

column 3:

(-5.6) + d + 0.02 = -3.9

diagonal 1 (top left to bottom right):

a + (-1.3) + 0.02 = -3.9

You will find

a = -2.62

b = 4.32

c = -4.28

d = 1.68

e = -6.92

5 0

3 years ago