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Aleks04 [339]
3 years ago
13

Jemma is three times as old as Angie. Five years from now the sum of their ages will be 34 years. What are their present ages?

Mathematics
2 answers:
Lapatulllka [165]3 years ago
5 0

Answer: Angie = 6, Jemma = 18

<u>Step-by-step explanation:</u>

Let x represent the current age of Angie

              Current Age           Age 5 years from now

Angie:            x                              x + 5

Jemma:        3x                            3x + 5

5 years from now the sum of their ages is 34

                  (x + 5) + (3x + 5) = 34

                               4x + 10 = 34

                               4x        = 24

                                 x         = 6

Angle's current age is x = 6

Jemma's current age is 3x = 3(6) = 18

Morgarella [4.7K]3 years ago
5 0

Answer: Angie is 6 years and Jemma is 18 years

Step-by-step explanation:

Let Jemma'a age be J and Angie's be A.

Then:

J = 3A .................................. Equation 1

Five years from now , Jemma will be J+5 years and Angie will be A+5 years.

That is :

J+5+A+5 = 34

Re arranging we have:

J +A+10 = 34

subtract 10 from both sides

J+A = 24............................ Equation 2

recall that  J=3A

Substitute  J = 3A  into equation 2 , then we have:

3A + A = 24

4A = 24

divide through by 4

A = 6

substitute A = 6 into equation 1 , we have

J = 3(6)

J = 18

Therefore :

Angie is 6 years and Jemma is 18 years

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yan [13]

If x=-6 then y=54.
If x=-4 then y=51.
If x=-2 then y=48.
If x=0 then y=45.
If x=2 then y=42.
If x=4 then y=39.
If x=6 then y=36.

There are an infinite variety of pairs of numbers for 'x' and 'y'
that can make that equation true.

You can use that equation to draw a  line on a graph.  Then
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4 0
3 years ago
Right triangle abc and pqr are shown below what angle is congruent to angle a and b what is the area in squares of triangle pr4
Effectus [21]
6x3=18-3=15 Hope it helps
4 0
3 years ago
Can someone help me pls
Pepsi [2]

Answer:

jen

Step-by-step explanation:

Jordan's total number of sit-ups

20+24+28+32= 104

Jen's total number of sit-ups

40+48+56+62=208

divide Jen's sit-ups by Jordan's sit-ups

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3 0
3 years ago
In how many ways can a
Tomtit [17]

Answer:

The answer is 364. There are 364 ways of choosing a recorder, a facilitator and a questioner froma club containing 14 members.

This is a Combination problem.  

Combination is a branch of mathematics that deals with the problem relating to the number of iterations which allows one to select a sample of elements which we can term "<em>r</em>" from a collection or a group of distinct objects which we can name "<em>n</em>". The rules here are that replacements are not allowed and sample elements may be chosen in any order.

Step-by-step explanation:

Step I

The formula is given as

C (n,r) = \frac{n}{r} = \frac{n!}{(r!(n-r)!)}

n (objects) = 14

r (sample) = 3

Step 2 - Insert Figures

C (14, 3) = (\frac{14}{3}) = \frac{14!}{(3!(14-3)!)}

= \frac{87178291200}{(6 X 39916800)}

= \frac{87178291200}{239500800}

= 364

Step 3

The total number of ways a recorder, a facilitator and a questioner can be chosen in a club containing 14 members therefore is 364.

Cheers!

6 0
3 years ago
What is the probability of selecting a seventh-grader from a school that has 250 sixth-graders, 225 seventh-graders, and 275 eig
Nina [5.8K]

Answer:

3/10 or 0.3 or 30%

Step-by-step explanation:

Its 225/750 total students

We simplify this by dividing by 5

45/150

Divide by 5 again

9/30

Divide by 3

3/10

3 0
3 years ago
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