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2 years ago

Help I can’t figure it out.

Mathematics

1 answer:

polet [3.4K]2 years ago

7 0

The discount price would be $21.98

The final price would be $124.56

yw, mwah

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The age of a boy is twice that of his sister. five years ago the boy was 3 times the age of his sister. How old is the boy

joja [24]

Answer:

<h2>20 years old.</h2>

Solution,

Let the age of sister be X

Let the age of boy be 2x

Now,

Five years ago,

 $3(x - 5) = 2x - 5 \\ or \: 3x - 15 = 2x - 5 \\ or \: 3x - 2x = - 5 + 15 \\ x = 10$ 

Again,

Replacing value,

 $age \: of \: boy = 2x \\ \: \: \: \: \: \: \: \: \: \: \: \: \: = 2 \times 10 \\ \: \: \: \: \: \: \: \: \: \: \: = 20$ 

hope this helps..

Good luck on your assignment..

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3 years ago

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vladimir1956 [14]

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2 years ago

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Tamiku [17]

$\sqrt{96} = \sqrt{16 \times 6} = \sqrt{16} \times \sqrt{6} = 4 \sqrt{6}$

Hope that helped :)

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2 years ago

m∠A = 42 and m∠C = 57. Find m∠B. A. 81 B. 99 C. 132 D. 147

faltersainse [42]

A.
because the total distance of every triangle 180. Add the two other angles so 42+ 57 =99. Then you have to subtract those two combined angles to find the missing one from the total distance, which is 180. 180-99=81. the answer is A. 81

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2 years ago

Pls tell the answer fast please

jekas [21]

Answer:

If I had to take an educated guess I'd say 126° but I'm not 100% sure.

7 0

2 years ago

Read 2 more answers