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qaws [65]
4 years ago
13

Musa is 47 years old and Dayo is 22 years old. How many years ago was the product of their ages i.e 836 years.​

Mathematics
1 answer:
shtirl [24]4 years ago
8 0

Answer:

3 years ago

Step-by-step explanation:

let m be Musa's age and d be Dayo's age

let x be number of years ago

m = 47

d = 22

(m - x)(d - x) = 836

(47 - x)(22 - x) = 836

1034 - 69x + x² = 836

x² - 69x + 198 = 0

This is in standard from ax² + bx + c = 0

Factor to be (x+q)(x+p)=0

p*q = c = 198

p+q = b = -69

198 = (-3)*(-66)

(-3) + (-66) = -69

Factored form is:

(x - 66)(x - 3) = 0

Set each bracket to 0

x - 66 = 0

x = 66 <= This number is inadmissable because neither Musa nor Dayo reached age 66.

x - 3 = 0

x = 3

The product of their ages was 836 3 years ago.

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Gnoma [55]
BCDE=100+ 80+100+80 = 360 degree
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Nimfa-mama [501]
<h3>Answer:  100 degrees</h3>

===============================================================

Explanation:

The two angles that involve x are alternate interior angles.

Due to the parallel lines, the alternate interior angles are equal.

We'll use this to solve for x

-7x-18 = -9x-46

-7x+9x = -46+18

2x = -28

x = -28/2

x = -14

Let's check the answer by evaluating each expression as shown below

  • -7x-18 = -7*(-14)-18 = 80
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Both angles are 80 degrees each, so it confirms we have the correct x value.

-----------------------

We have one last step. We found the -9x-46 angle to be 80 degrees. Angle 4 is adjacent to this and supplementary.

So we subtract from 180 to get the answer

180-80 = 100

6 0
3 years ago
Cual es el vaolor de t-19=1
FromTheMoon [43]

Answer:

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Step-by-step explanation:

t-19=1

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3 0
2 years ago
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Answer:

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Step-by-step explanation:

7cm+11cm = 17cm

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Answer:

Equation F can be written as 5b + 1 = 3b + 4.

Step-by-step explanation:

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