2 years ago

Convert 8.4 hours to hours and minutes

Mathematics

1 answer:

Luda [366]2 years ago

4 0

You need to do 60 times 8.4 to get how many minutes. And 60 times 8.4 is 504

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Help with these math exercises, please!

lions [1.4K]

1) (3-x) x (3+x)

2) 5(5-x) x (5+x)

3) (3v-wy) x (3v+wy)

4) 2(k-m) x (k+m) x (k^2+m^2)

5) (ab-4c) x (ab+4c)

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2 years ago

Kevin is 4 times as old as Daniel and is also 6 years older than Daniel

MAXImum [283]

Answer:

Part a) Daniel's age is 2 years

Part b) Kevin's age is 8 years

Step-by-step explanation:

The question is

Part a) How old is Daniel?

Part b) How old is Kevin?

Let

x ----> Kevin's age

y ----> Daniel's age

we know that

$x=4y$ -----> equation A

$x=y+6$ ----> equation B

Equate equation A and equation B

$4y=y+6$

solve for y

$4y-y=6$

$3y=6$

$y=2$

therefore

Daniel's age is 2 years

Find the value of x

substitute the value of y in any of the two equations

$x=4(2)=8\ years$

$x=2+6=8\ years$

therefore

Kevin's age is 8 years

6 0

2 years ago

Which expression is equivalent -4×4×4×4×4×4×4×4?

WITCHER [35]

Answer:

$-\underbrace{4\times4\times4\times4\times4\times4\times4\times4}_{8}=-4^8$

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2 years ago

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12 to the 3rd power divided by 12 to the 7th power

Molodets [167]

Answer:

0.000048..............

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2 years ago

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Which polynomial identity will prove that 49 − 4 = 45?

Marizza181 [45]

49 is a square of 7 and 4 is a square of 2. To get 45 you need to subtract 7² and 2². Therefore, its the difference of squares.

3 0

2 years ago