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Dmitrij [34]
2 years ago
13

A father is60 years old and his son is half his age. How old was the boy when his father was four times his age

Mathematics
2 answers:
SpyIntel [72]2 years ago
4 0

Answer: the son is 60 years old

Step-by-step explanation: First you divide the fathers age by 2 (60 / 2)=30 so if the father is four times the boys age then the father would be 120 divided by 2 because the son is half the fathers age the son would be 60 years old.

Pachacha [2.7K]2 years ago
3 0
The boy would be 10 when his father was four times his age because the boy was born when the father was 30 and now that the boy is half of 60 he's 30. By subtracting 60 from 30 that gives you the age of the father when the boy was born. So when the boy is ten that would mean the father is 40 and 40 divided by ten is four
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MAKE SURE IT IS 100% CORRECT
masha68 [24]
They are vertical angles. They are congruent. 

(2x+2)= (3x-52)

Add 52 to the other side. 

2x+54=3x

Subtract 2x on both sides.

54=x

I hope this helps!
~kaikers
7 0
3 years ago
80
vladimir1956 [14]

Answer:

Step-by-step explanation:

D is the answer

7 0
3 years ago
Read 2 more answers
Given: <br> ΔABC, m∠C = 90º, m∠B = 30º<br> CM - angle bisector<br><br> Find: m∠AMC
SashulF [63]

Answer:

75°

Step-by-step explanation:

1. Consider right triangle ABC. In this triangle

m∠C = 90º and CM - angle bisector.

If CM is angle C bisector, then

m∠ACM = m∠MCB = 45º

2. Consider triangle CMB. The sum of the measures of all interior angles of the triangle is always 180°, then

m∠MCB + m∠CBM + m∠BMC = 180°,

m∠BMC = 180° - 45° - 30°

m∠BMC = 105°

3. Angles AMC and BMC are supplementary angles, so

m∠AMC + m∠BMC = 180°

m∠AMC = 180° - 105°

m∠AMC = 75°

3 0
2 years ago
PLEASE HELP PLEASE!!!
defon

Answer:

We conclude that at x = 0 and x = -1, the value of f(x) = 2ˣ - 1 and g(x) = 1/2x is the same.

Therefore, the solution to f(x) = g(x) is:

  • x = -1
  • x - 0

Step-by-step explanation:

Given the table

x                f(x) = 2ˣ - 1                  g(x) = 1/2x

-2                  -3/4                               -1

-1                    -1/2                               -1/2

0                     0                                   0

1                       1                                   1/2

2                     3                                    1

If we carefully observe, we can determine that

at x = 0, the value of f(x) = 2ˣ - 1 and g(x) = 1/2x is the same.

In other words,

at x = 0

  • f(0) = 0
  • g(0) = 0

Thus,

at x = 0

f(x) = g(x)

Also at x = -1, the value of f(x) = 2ˣ - 1 and g(x) = 1/2x is the same.

In other words,

at x = -1

  • f(-1) = -1/2
  • g(-1) = -1/2

Thus,

at x = -1

f(x) = g(x)

Summary:

Thus, we conclude that at x = 0 and x = -1, the value of f(x) = 2ˣ - 1 and g(x) = 1/2x is the same.

Therefore, the solution to f(x) = g(x) is:

  • x = -1
  • x - 0
6 0
2 years ago
A tree casts shadow 26 ft long. A 3 ft tall flowers casts a shadow 4 ft long. How tall is the tree?
Rufina [12.5K]

Answer:

19. 5 feets

Step-by-step explanation:

Shadow of tree = 26 feets

Height of flower = 3 feets

Shadow of flower = 4 feets

Height of sun Innthe sky:

Shadow of flower / height of flower

= 4/3 = 1.333333

Height of tree:

Shadow of tree / height of sun

26 feets / 1.33333

= 19.5 feets

Hence, height of tree = 19.5 feets

5 0
3 years ago
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