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Ulleksa [173]
2 years ago
15

Giving Brainiest ~~ :)

Mathematics
2 answers:
Gre4nikov [31]2 years ago
8 0
Hi, I think what you need to do is multiply 21 x 4 x 1/3. If you need help multiplying there’s a helpful website called Calculator Soup that is very helpful.
Masja [62]2 years ago
8 0

Answer:

28 meters cubed

Step-by-step explanation:

V = 1/3 BH

V = 1/3 (4)(21)

V = 28

Hope this helped :))

have a great day :D <3

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Estimate how many times larger (1.9) x 10⁻⁸ is than (4.2) x 10⁻¹³ ????
Igoryamba

Answer:

1.9 x 10=19

4.2x10=42

Now just find out how to multiply 19 -8 times and how to multiply 42, -13 times.

Step-by-step explanation:

hope this helps if not sorry

8 0
2 years ago
Read 2 more answers
WILL MARK YOU BRAINLIEST !!!!
liq [111]

Answer:

\overline {PM} \cong \overline {ON} because they are opposite sides of a parallelogram.

Step-by-step explanation:

First of all, let us have a look at the definition of a parallelogram.

<em>A parallelogram is a closed 4 sided figure (i.e. a quadrilateral) made up with two pairs of straight lines such that the two pairs are parallel and equal to each other.</em>

<em></em>

For example, let us consider a quadrilateral ABCD as attached in the diagram in answer area.

The two pair of lines are:

AB,  DC and BC, AD

For ABCD to be a parallelogram, the lines

AB and DC must be parallel to each other and AB = DC

AND

BC and AD must be parallel to each other and BC = DA

------------------------------

In the given question, we are given that the quadrilateral MNOP is a parallelogram.

The two pairs opposite lines are OP, NM and PM, ON.

As per the definition of a parallelogram,

OP and NM must be <em>parallel and equal </em>to each other.

AND

PM and ON must be <em>parallel and equal </em>to each other.

\therefore \overline {PM} \cong \overline {ON}.

Hence proved.

6 0
3 years ago
In this swimming pool design, explain how to find the area of the pool's surface. ​
Svetllana [295]
With a square or rectangular shape, the formula for figuring out how big an area is is simple: multiply the length and width of the shape by the square feet is the surface area of a pool that is feet long and feet wide (8x 10).
8 0
2 years ago
-4k^2-8k-3 = -3-5k^2
mel-nik [20]
-4k^2-8k-3 = -3-5k^2 \\ \\ -4k^2 - 8k = -5k^2 \\ \\ 4k^2 + 8k - 5k^2 = 0 \\ \\ -k^2 + 8k = 0 \\ \\ 8k - k^2 = 0 \\ \\ k(8 - k) = 0 \\ \\ k = 0,8 \\ \\

The final result is: k = 0, 8.
8 0
3 years ago
Read 2 more answers
How many solutions does the following equation have?3(x+5)=−4x+8
alexandr402 [8]

Answer:

1

Step-by-step explanation:

Solve the equation for x:

3(x + 5) = -4x + 8

<em>Distribute.</em>

3x + 15 = -4x + 8

<em>Combine like terms.</em>

3x + 15 = -4x + 8

+4x         +4x

7x + 15 = 8

     -15   -15

7x = -7

<em>Divide both sides by 7.</em>

x = -1

The following equation has one solution, x = -1.

7 0
3 years ago
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