2 years ago

Jamar is four times as old as Josh. In 20 years he will be twice as old as Josh. How old is Jamar?

1 answer:

5 0

Simultaneous equations
Jamar=J
Josh=j
4J=j
20+J=2j
Then
4J=j
-4 (J)=-4(2j-20)
So
0=-7j+80
7j=80
j=80÷7

You might be interested in

dexar [7]

I believe is C (i think)

6 0

3 years ago

vesna_86 [32]

- - - - - - - - - - - - - - - - - - - - - - - -

Beginning with an "If-then" statement ⇣

If 2/5 = 30 then 1/5 = 15

Now we have 1/5, let's make it 1 by multiplying x5.

15 x 5 = 75

- - - - - - - - - - - - - - - - - - - - - - - -

Good luck! :)

~pinetree

3 0

2 years ago

Luden [163]

The answer would be b

8 0

2 years ago

monitta

Answer:

it just died because of natural causes haha

Step-by-step explanation:

5 0

3 years ago

Scilla [17]

First we need to choose from "Posivite Test" column:
$\frac{12}{12+78} = \frac{12}{90} = 0,1333(3)$

3 0

3 years ago