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Yuri [45]
3 years ago
5

The Lee’s have three children. The oldest is twice as old as the youngest. The middle child is five years older than the younges

t. If the sum of the ages is 57, how old is each child?
Mathematics
2 answers:
makkiz [27]3 years ago
8 0
The answer is 13, 18, and 26.
WITCHER [35]3 years ago
5 0
The three children are x, 2x, and x+5
So set up an equation: x+2x+x+5=57
Solve: 4x=52 so x=13
So the ages are...

13, 18, 26

Check: 13+18+26=57
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Find the solution to the equation algebraically. Check your answer. k - 16 = 4
vitfil [10]

Answer:

k= 20

Step-by-step explanation:

You start with this equation:

k-16=4

Add 16 on both sides.

k=4+16

Simply.

k=20

If you want to check your answer, you can just plug 20 into where k is back into the equation:)

Hope this helps!

7 0
3 years ago
Need help for this one!
xeze [42]
(x+3 ; y-5)

If you have (-2 ; 3) that means x = -2 and y = 3 so:

(-2+3 ; 3-5) = (1 ; -2)
5 0
3 years ago
Two vertical buildings 57 meters apart are 158 meters and 237 meters high. Find the angle of elevation from the top of the short
miskamm [114]

Given :

Two vertical buildings 57 meters apart are 158 meters and 237 meters high.

To Find :

The angle of elevation from the top of the shorter building to the top of the taller building.

Solution :

Distance between height of building, h = 237 - 158 = 79 m.

Distance between these building , d = 57 m.

Now,

tan\ \theta = \dfrac{h}{d}\\\\tan\ \theta = \dfrac{79}{57}\\\\tan\ \theta = 1.386\\\\\theta = tan ^{-1} 1.386\\\\\theta = 54.19^{\circ}

Therefore, the angle of elevation from the top of the shorter building to the top of the taller building is 54.19°.

Hence, this is the required solution.

4 0
2 years ago
Help me please ......
oksano4ka [1.4K]
-4 = x - 7
-4 + 7 = x
3 = x

Therefore x = 3
4 0
3 years ago
If x is directly proportional to to y and x= 200 and y=3 find x when y=5​
Amiraneli [1.4K]

Answer:

333.33

Step-by-step explanation:

x is directly proportional to y

k=y/x

k=3/200

now,

when y =5

y=kx

5=(3/200)x

1000/3=x

333.33 = x

3 0
2 years ago
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