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Stells [14]
3 years ago
14

Obi's age is twice oba's age 4 years ago obi was three times as old as oba. find their ages​

Mathematics
2 answers:
frutty [35]3 years ago
8 0

Answer:

Obi's age is 18 and Oba's age is 9

Step-by-step explanation:

Let Obi's age be x and Oba's age be y

<u><em>Condition 1:</em></u>

x = 2y -----------(1)

<u><em>Condition 2:</em></u>

(x-4) = 3(y-4)

=> x -4 = 3y-12

=> x - 3y = -9  -----(2)

<u><em>Putting eq (1) in (2)</em></u>

2y - 3y = -9

=> -y = -9

=> y = 9

Now,

x = 2y

=> x = 2(9)

=>  x= 18

maxonik [38]3 years ago
5 0

Answer:

8\\4

Step-by-step explanation:

Obi's age is x.

Oba's age is 2x.

4 years ago, Obi's age was x-4.

4 years after, Obi's age is 2x-4

3 times more than Oba's, so 3(x-4)

2x - 4 = 3( x - 4)

2x - 4 = 3x-12

2x - 3x = -12+4

-1x=-8

x=8

x-4\\(8)-4=4

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Answer:

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3 years ago
Of the animals at the shelter, 5/8 are cats. Of the cats 2/3 are kittens. What fraction of the animals at the shelter are kitten
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Answer: 16/24

Step-by-step explanation: Find out a common denominator: 8,16,24 and 3,6,9,12,15,18,21,24. Which is 24.

Take 5/8 multiplied by 3 because its the 3rd multiple of 8. Which is 15/24.

Then, take 2/3 and multiply by 8 because its the 8th multiple of 3. This will give you 16/24.

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3 years ago
The sum of two consecutive numbers is -165. Find the value of the smaller number.
Svetllana [295]

Answer:

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Step-by-step explanation:

x+(x+1)=number

x+(x+1)=-165

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7 0
3 years ago
What is an word problem that matches the expression : 36 divided by 4?
STatiana [176]

Answer:

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Step-by-step explanation:

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3 years ago
Read 2 more answers
A triangle has vertices at (-9,2), (-9,-6), (-3,-6). What is the perimiter of the triangle in units?
vladimir2022 [97]

Answer:

The perimeter is 24 units

Step-by-step explanation:

Given

A = (-9,2) --- (x_1,y_1)

B = (-9,-6) --- (x_2,y_2)

C = (-3,-6) --- (x_3,y_3)

Required

Determine the perimeter

To do this, we calculate the distance AB, BC and AC.

Distance is calculated as:

d = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2

So, we have:

AB = \sqrt{(-9 - -9)^2 + (2 - -6)^2

AB = \sqrt{64

AB = 8

BC = \sqrt{(-9 - -3)^2 + (-6 - -6)^2

BC = \sqrt{36

BC = 6

AC = \sqrt{(-9 --3)^2 + (2 --6)^2

AC = \sqrt{100

AC = 10

So, the perimeter (P) is:

P = AB + BC + AC

P =8 + 6 + 10

P =24

3 0
3 years ago
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