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2 years ago

A cube has a side length of 5xcm. What is the volume of the cube?no links please.

Mathematics

1 answer:

finlep [7]2 years ago

7 0

Answer:

125 cm

Step-by-step explanation:

$V=lwh$

all cube has the same length, width, height

5 * 5 * 5 = 125

Hope this helps

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Find 30% of 70<br> a. 21<br> b. 36<br> c. 40

gtnhenbr [62]

A is your answer

We can cross multiply using x/70=30%/100

Solving it we get:
100x=2100 (70 times 30)
x=21

So we get a, 21 as your answer.

I hope this helped!

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3 years ago

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Which expressions are equivalent to -6 +49 +(-6q)?<br> Choose all answers that apply:

Sidana [21]

Answer:

C, none of them are equivalent

BECAUSE

For A, the -4q should be positive 4q to apply

For B, the 2q when distributing with the parentheses should be negative 2q to work with the expression above

Hope this helps!

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2 years ago

Read 2 more answers

Co-ordinate Geometry

saul85 [17]

Answer:

The value of a = 14

Step-by-step explanation:

Given

(x₁, y₁) = (2, 4)

(x₂, y₂) = (6, a)

(x₃, y₃) = (-1, 1)

A = 9 sq.units

Area of a triangle with vertices (x₁, y₁), (x₂, y₂), and (x₃, y₃) is:

$A=\frac{\left|x_1\left(y_2-y_3\right)+x_2\left(y_3-y_1\right)+x_3\left(y_1-y_2\right)\right|}{2}$

substituting the values (x₁, y₁) = (2, 4), (x₂, y₂) = (6, a), (x₃, y₃) = (-1, 1), A = 9 in th formula

$A=\frac{\left|x_1\left(y_2-y_3\right)+x_2\left(y_3-y_1\right)+x_3\left(y_1-y_2\right)\right|}{2}$

$9=\frac{\left|2\left(a-1\right)+6\left(1-4\right)+-1\left(4-a\right)\right|}{2}$

Multiply both sides by 2

$\frac{2\left|2\left(a-1\right)+6\left(1-4\right)-1\left(4-a\right)\right|}{2}=9\cdot \:2$

simplify

$\left|2\left(a-1\right)+6\left(1-4\right)-1\left(4-a\right)\right|=18$

As the area is always positive.

$2\left(a-1\right)+6\left(1-4\right)-1\cdot \left(4-a\right)=18$

$2\left(a-1\right)-18-\left(4-a\right)=18$

Add 18 to both sides

$2\left(a-1\right)-18-\left(4-a\right)+18=18+18$

simplify

$2\left(a-1\right)-\left(4-a\right)=36$

$3a-6=36$

$3a=42$

Divide both sides by 3

$\frac{3a}{3}=\frac{42}{3}$

$a=14$

Thus, the value of a = 14

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2 years ago

The standard deviation is used in conjunction with the ______ to numerically describe distributions that are bell shaped. the

Usimov [2.4K]

Mean

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2 years ago

What is the measure of one interior angle of a regular convex 31-gon?

quester [9]

OK now I knows snout

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3 years ago

A cube has a side length of 5xcm. What is the volume of the cube?no links please.​

A cube has a side length of 5xcm. What is the volume of the cube?no links please.