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anzhelika [568]
3 years ago
8

a boy is older than his sister by 3 years five years ago, the ratio of their ages was 4 : 3 find his present.​

Mathematics
2 answers:
pashok25 [27]3 years ago
8 0
B:S = 4x:3x
4x - 3x = 3
x = 3
They were 12 & 9.
Add 5 to that.
So he’s now 17 and she’s 14
AnnZ [28]3 years ago
8 0

Answer:

five years ago -- boy-   x+3 years

                           sister ---  x

ratio-- 4:3  so difference is 3 years

4-3-- 1   1--3

five years ago ---  sister  :3*3--9   brother : 4*3--12

present : sister 14 years and brother 17 years old

 

Step-by-step explanation:

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kotegsom [21]
They is 9dime and 13 Nickels because 13 x5=65 and 9 x10=90 .So 0.65+ 0.90= 1.55.
4 0
3 years ago
What is the solution set for |z+4|>15
Contact [7]

Answer:

z + 4 = 15 \\ z + 4 - 4 = 15 \\ z = 15 - 4 \\ z = 11

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5 0
3 years ago
Can someone help please ? Thanks I’m advance
Pani-rosa [81]

Answer:

f(-3) = 16

Step-by-step explanation:

Given:

f(x) = 2x² + x + 1

Required:

f(-3)

Solution:

Substitute x = -3 into f(x) = 2x² + x + 1

f(-3) = 2(-3)² + (-3) + 1

f(-3) = 2*9 - 3 + 1

f(-3) = 18 - 3 + 1

f(-3) = 16

6 0
3 years ago
What is five divided by five thousand four hundred thirty
Molodets [167]
0.0009208 you can round it to 0.0009 if you want.
6 0
3 years ago
Can u guys please explain what the answer is ​
iVinArrow [24]
You can literally determine the sisters height by adding 4 + 3 because it says she’s 3 years older I’m not saying that she equation because the equation needs to include x so 4 + 3 = x
8 0
3 years ago
Read 2 more answers
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