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3 years ago

Some one help i hate math

Mathematics

1 answer:

Daniel [21]3 years ago

6 0

I would say 1/12 ft but I might be wrong.

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Pls answer me this all question

Scorpion4ik [409]

Answer:

a. $5 \frac{21}{40}$

b. $\frac{1}{42}$

Step-by-step explanation:

$a. \: 12 \frac{2}{5} - 6 \frac{7}{8}$

$\frac{62}{5} - \frac{55}{8}$

$\frac{62}{8} \times \frac{8}{8} - \frac{55}{8} \times \frac{5}{5}$

$\frac{62 \times 8 - 55 \times 5}{40}$

$\frac{221}{40}$

$5 \frac{21}{40}$

$b. \: \frac{3}{14} - \frac{4}{21}$

$\frac{3}{14} \times \frac{3}{3} - \frac{4}{21} \times \frac{2}{2}$

$\frac{3 \times 3}{42} - \frac{4 \times 2}{42}$

$\frac{1}{42}$

Hope it is helpful....

5 0

2 years ago

Read 2 more answers

Please help, Geometry I have NO idea how to do this. Both pictures! (#12, #16)

Dvinal [7]

180 degrees in a triangle. so 180-90-31=59

8 0

3 years ago

PLEASE HELP WITH THE PROBLEM ON THE ATTACHED FILE

prisoha [69]

Answer:

6 : 1

Step-by-step explanation:

b - 3a / 9 = a /3

Cross multiply

3(b - 3a) = 9a

Expand

3b - 9a = 9a

Add 9a to both sides

3b = 9a + 9a

3b = 18a

Divide both sides by 3

b = 6a

Ratio of a : b

6 : 1

6 0

2 years ago

Anna11 [10]

Answer: -104

Explanation: x=-9 y=2
2(y-3xy)
=2(2-3(-9)(2))
=4-2(3(-18))
=4-108
=-104

Hope it helped

4 0

2 years ago

2(5n - 2 ) = 4 ( n + 2 )

Marianna [84]

2(5n-2)=4(n+2)
10n-4=4n+8
6n-4=8
6n=12
n=2

3 0

3 years ago

Read 2 more answers