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3 years ago

How many 3/4's are in the whole number 21?

Mathematics

2 answers:

Nonamiya [84]3 years ago

7 0

Answer:

21 ÷ 3/4

= 21 × 4/3

= 7×4

= 28

Step-by-step explanation:

lora16 [44]3 years ago

3 0

Answer: 15.75

Step-by-step explanation:

3/4*21=15.75

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What is 30000056784532178957 times 38576497642905444922737

Nonamiya [84]

Answer:

1.1572971e+42

Step-by-step explanation:

8 0

3 years ago

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A shark was swimming at 300 feet below sea level. He swam 300 feet up toward the surface. How many feet above sea level is the s

Rom4ik [11]

Answer: the shark is at sea level

Step-by-step explanation: is you are 300 beneath the sea level that's -300 and if you go up 300 ft that +300. So 300+(-300) gives you 0 making the shark at sea level.

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3 years ago

5x + 2 = 8x + 5 Help me before I die quick math is so hardddddd

attashe74 [19]

Answer:

x = -1

Step-by-step explanation:

Note: when you send a number across it can change it sign. If it is positive it will turn negative.

5x + 2 = 8x + 5

Send 8x across

5x + 2 - 8x = 5

send 2 across

5x - 8x = 5 - 2

- 3x = 3

Divide both sides by - 3

- 3x/- 3 = 3/- 3

- 3 cancel out - 3

x = 3/ - 3

3 divided by - 3 is - 1

x = -1

4 0

2 years ago

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Y is directly proportional to x when x=540 y=10 calculate the value of y when x=540.

zhuklara [117]

Answer:

Step-by-step explanation:

Y should still be 10 since x is 540

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3 years ago

Complete the following: a^2 − 16 = (a +______ )(a - _____ )

snow_tiger [21]

Answer:

$a^{2} -16$ = (a + 4) (a - 4)

Step-by-step explanation:

The given equation is $a^{2} -16$

Now, By ALGEBRAIC IDENTITY:

$a^{2} -b^{2} =(a - b) (a + b)$

Here, taking $b^{2} = 16$ , we get b = 4

as $4^{2} = 16$

So, the right hand side of $a^{2} -16$ is (a + 4) (a-4)

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4 years ago