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2 years ago

M^2=81 is true for I NEED HELP GUYS

Mathematics

2 answers:

aev [14]2 years ago

5 0

Answer:

It's true for values of m = ±9

Explanation:

for m = -9 :

${( {}^{ - } 9)}^{2} = 81$

For m = +9 :

$( {}^{ + } 9) {}^{2} = 81$

hence m is -9 and +9

Pavlova-9 [17]2 years ago

4 0

Answer:

yes

Step-by-step explanation:

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Joubert hint all ineyzreytfcfvbubu equals 9

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3 years ago

Can anyone math experts help and guide me through these questions❓

Lubov Fominskaja [6]

Step-by-step explanation:

The volume of a cube is

$a {}^{3}$

where a is the side length,

Note: If you want to remember this formula, know that a cube is basically a bunch of squares stacked on one another vertically and horizontally

The area of a square with side length a, is

${a}^{2}$

If we multiply that by the height of the cube, which is a.

${a}^{2} \times a = {a}^{3}$

That is the easy way to derive the formula of the volume of a cube.

Back on track, we know the volume so we must solve for a.

$125 = {a}^{3}$

Assuming you took algebra, to isolate the variable a, we must undo it being raised to the third power.

To do this, we take the cube root of both sides

$\sqrt[3]{125} = \sqrt[3]{a {}^{3} }$

The cube root of 125 is 5 so

$5 = a$

5 cm

$8 = {a}^{3}$

$\sqrt[3]{8} = \sqrt[3]{ {a}^{3} }$

$2 = a$

2 ft

$343 = {a}^{3}$

$a = 7$

7 yd

$1000 = a {}^{3}$

$10 = a$

10 mm

$1728 = {a}^{3}$

$a = 12$

12 in. or 1 ft

$1 = {a}^{3}$

$a = 1$

1 m

4 0

2 years ago

Read 2 more answers

Simplify. 2a4b5c(4a4bc3)

Lady bird [3.3K]

Answer:

1920 a^2 b^2 c^2

Step-by-step explanation:

4 0

3 years ago

charissa ordered 3 cans of lemonade for each person at her party. She also ordered 1 pizza for every 4 people. If she ordered 6

krek1111 [17]

Answer:

72 cans

Step-by-step explanation:

step 1

Find the number of people

we know that

She ordered 1 pizza for every 4 people

using proportion

Find out the number of people for 6 pizzas

$\frac{1}{4}=\frac{6}{x}\\\\x=24\ people$

step 2

Find the number of cans ordered

we know that

Charissa ordered 3 cans of lemonade for each person

using proportion

Find out the number of cans of lemonade she ordered for 24 people

$\frac{3}{1}=\frac{x}{24}\\\\x=24(3)\\\\x=72\ cans$

7 0

3 years ago

Find the value of f(x), when x=4

OleMash [197]

Answer:

f(4)

Step-by-step explanation:

replace the x in f(x) with 4

6 0

3 years ago