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2 years ago

Someone help me with this pleaseeee!!!! I need help ASAP pleasee!!!

Mathematics

1 answer:

Katen [24]2 years ago

7 0

Answer:

192 cm^3

Step-by-step explanation:

base area = side^2 = 8^2 = 64 cm^2

V = (base area x height)/3 = (64 x 9)/3 = 192 cm^3

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(√0,04-√(-1,2)²+√121)×√81

Semenov [28]

Answer: 90

Step-by-step explanation:

$\displaystyle\ \Large \boldsymbol{} (\sqrt{0,04}-\sqrt{(-1,2)^2}+\sqrt{121 } ) \cdot \sqrt{81} = \\\\\\(0,2-1,2+11)\cdot 9=(11-1)\cdot 9=90$

6 0

3 years ago

The area of the trapezoid is 40 square units.

Whitepunk [10]

Answer:

5 units

Step-by-step explanation:

Image of the trapezoid is attached.

To find the height of the trapezoid (image attached), let's take the formula for area of a trapezoid.

The formula for area of a trapezoid is:

$A = (\frac{a + b}{2}) h$

Here, a and b represents the bases of the trapezoid.

a = 6

b = 10

h which represents height is unknown.

A = 40

Substitute figures:

$40 = (\frac{6 + 10}{2}) h$

$40 = (\frac{16}{2}) h$

$40 = 8 * h$

Solve for h:

$h = \frac{40}{8}$

$h = 5$

The height of the trapezoid is 5 units

4 0

3 years ago

Read 2 more answers

The expression on the left side of an equation is shown below. If the equation has an infinite number of solutions, which expres

chubhunter [2.5K]

The answer is D. -2x+5.

If we simplify the left side of the equation first given, we come to the expression -2x-10.

If we solve for D., we get the same results. Thus, because an equation with all the same variable terms and constants have infinite solutions, the answer is D.

Hope this helps!

5 0

3 years ago

Read 2 more answers

Which of the following are solutions to the equation below?

anastassius [24]

Answer:

C and F

Step-by-step explanation:

Given

(3x - 5)² = 19 ( take the square root of both sides )

3x - 5 = ± $\sqrt{19}$ ← note plus or minus

Add 5 to both sides

3x = ± $\sqrt{19}$ + 5 ( divide both sides by 3 )

x = ± $\frac{\sqrt{\sqrt{19}+5 } }{3}$

Separating the solutions

x = $\frac{\sqrt{19}+5 }{3}$ → C

x = $\frac{-\sqrt{19}+5 }{3}$ → F

4 0

3 years ago

A total of 632 adults and children are at a water park. There are 68 fewer adults than children at the water park. How many chil

Alinara [238K]

Answer:

<h2>350 children</h2>

Step-by-step explanation:

x = Number of adults

x + x + 68 = 632

2x = 632 - 68

2x = 564

x = 282

282 + 68 = 350

350 children.

We can always check.

282 + 350 =

It equals 632, so we know our answer is correct.

6 0

3 years ago

Read 2 more answers