All categories

3 years ago

a half of whats johns age was 4 years ago is equal to one third of what will be in 5 years time. how old is john now?

Mathematics

1 answer:

Leona [35]3 years ago

8 0

Let x = John's age now

half of what johns age was 4 years ago: (1/2)(x-4)

is equal to one third of what it will be in 5 years time: (1/3)(x+5)

(1/2)(x-4) = (1/3)(x+5)

3(x-4) = 2(x+5)

3x - 12 = 2x + 10

You might be interested in

What is the best name for angle Y

Blizzard [7]

This question doesnt make sense u need to attach a picture

5 0

3 years ago

What is the measure ??

alexandr402 [8]

Welcome

d the answer is 73 degrees
$114 - 41 = 73$

5 0

3 years ago

While travelling, john left destination a at 9 am. driving until 7 pm, he travelled a total of 500 miles. the next day, john lef

aleksklad [387]

Answer:

10 hours 500 miles

8 hours 270 miles

_________________

18 hours 770 miles

Average speed: 770 / 18 = 42.77;

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Members of a basketball team suspect the coin used for the coin toss at the beginning of their games is unfair. They believe it

Nadusha1986 [10]

Answer:

The trial provides enough evidence that the probability of obtaining heads is less than 0.50 and that the coin is unfair.

Step-by-step explanation:

The explanation is in the picture

5 0

3 years ago

Makovka662 [10]

Answer:

Option A ( -3/2 , $\frac{-3\sqrt{3} }{2}$ )

Step-by-step explanation:

According to Question, The Spinner Rotate 600* Thus after Completing 360* it Comes Exactly Where It Started . Now again rotate It 180* .

Now We Are on ( -X axis ) & Completed 360*+180*=540* Rotation

Now After Rotate It 60* More we come in Third Quadrant & Here In Third Quadrant Only Tangent & Cotangent Is Positive .(Sine & Cosine is Negative)

(For Diagram, Please Find in attachment)

Now In Triangle OAB

Cos60* = OA / OB

1/2 = -X / 3 Thus X= -3/2

Sin60* = AB / OB

$\sqrt{3}$ /2 = -Y / 3 Thus Y = - $\sqrt{3}$ * 3 /2

6 0

3 years ago