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3 years ago

If B equals 7 what is the value of the expression 2 + (10 - B )?

Mathematics

2 answers:

avanturin [10]3 years ago

6 0

We just need to plug in 7 for B!

Let's do it !

2 + (10 - 7)

We always start with the parenthesis first ! It's just a rule in math :)

10 - 7 = ?

10 - 7 = 3

Now we have ...

2 + 3

2 + 3 = 5

Your final answer is 5!

I hope I helped :) Just comment if you have any questions and remember to vote me "brainliest" if you like my answer !!!

Solnce55 [7]3 years ago

6 0

Your answer is 5! :)))))))))))

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In a parallelogram, explain how opposite sides are congruent

Otrada [13]

There's a theorem that states:
"If a quadrilateral is a parallelogram, it has 2 sets of opposite sides congruent."

Hope this helps ;)

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3 years ago

The surface area of the cone is 43.75pie cm^2. What is the slant height of the cone and the diameter is 5

Masteriza [31]

If the diameter of the cone is 5, then the radius of it will be half that, or 2.5, thus

$\bf \textit{total surface area of a cone}\\\\
SA=\pi r\stackrel{slant~height}{\sqrt{r^2+h^2}}+\pi r^2~~
\begin{cases}
r=radius\\
h=height\\
------\\
SA=43.75\pi \\
r=2.5
\end{cases}
\\\\\\
43.75\pi =\pi (2.5)\sqrt{r^2+h^2}+\pi (2.5)^2
\\\\\\
43.75\pi -\pi (2.5)^2=2.5\pi \sqrt{r^2+h^2}
\\\\\\
43.75\pi -6.25\pi =2.5\pi \sqrt{r^2+h^2}\implies 37.5\pi =2.5\pi \sqrt{r^2+h^2}
\\\\\\
\cfrac{37.5\pi }{2.5\pi }=\sqrt{r^2+h^2}\implies 15=\sqrt{r^2+h^2}$

3 0

3 years ago

For the inverse variation equation xy = k, what is the constant of variation, k, when x = 7 and y = 3?

sleet_krkn [62]

Answer:

k = 21

Step-by-step explanation:

$xy = k\\\\Plugging\: x = 7\: and\: y = 3,\: we\; find:\\7\times 3 = k\\21 = k\\\huge\red{\boxed{k = 21}}\\$

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3 years ago

SOMEONE PLEASE ANSWER THESE!!! ASAP!!

My name is Ann [436]

Answer:

1. Because it is an integer.

2. Because it is a terminating decimals.

3. Because it is a terminating decimal as well as an integer.

4.Because it is a natural number.

5.Because it is a terminating decimal when divided.

6. Because it is a whole number.

7. Because it is a natural number.

8. Because it is a terminating negative decimal when divided(simplified basically).

Step-by-step explanation:

Irrational numbers include:

Non terminating,and non recurring decimals.

Example: 1.2345677854903421......so on.

Hope this helps... :-)

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3 years ago

What expression shows the relationship between the value term n

ruslelena [56]

-5n + 15 is the answer I think
I understand if it's not

4 0

3 years ago