Mathematics College


Martina is currently 18 years older than her cousin Joey. In 5 years she will be 3 times as old as Joey . Use this information to answer the following questions.
If you let x represent Joey's current age, what expression can you use to represent Martina's? PLEASE HELP
current age?

Martina Is Currently 18 Years Older Than Her Cousin Joey. In 5 Years She Will Be 3 Times As Old As Joey

Answers

Answer 1

Answer:

The age of Joey is 4 years  and

The age of Martina is 22 years .

Step-by-step explanation:

Given as :

Martina is 18 years older than her Joey

In 5 years, Martina will be three times older than Joey

Let The age of Martina = M years

And The age of Joey = J years

Now, According to questions

M = J + 18          ........1

(M+5) = 3 × (J+5)

Or, M + 5 = 3 J + 15

Or, M - 3 J = 15 - 5

∴ M - 3 J = 10                ..........2

Solving eq 1 and 2

Put the value of M from eq 1 into eq 2

So, (J + 18) - 3 J = 10

Or, J - 3 J = 10 - 18

Or, - 2 J = - 8

∴ J =

i.e J = 4 years

So, The age of Joey = J = 4 years

Now, Put the value of J in eq 1

So, M = J + 18

Or, M = 4 + 18

∴ M = 22 years

So, The age of Martina = M = 22 years

Hence,The age of Joey is 4 years  and The age of Martina is 22 years . Answer

Related Questions

Write a cosine function that has a midline of 2, an amplitude of 4 and a period of
8/3

Answers

Answer: f(x) = 4*cos(pi*(6/8)*x) + 2

Step-by-step explanation:

A generic cosine function is written as:

f(x) = A*cos(w*x + p) + M

where:

A = amplitude

w = angular frequency

p = phase

M = midline.

We know that:

the midline is 2, then  M = 2

the amplitude is 4, then A  = 4

There is no information about the phase, so p = 0.

And we know that the period is 8/3.

The period is written as T, and the relation between the period and the angular frequency is:

T = 2*pi/w

Then we have:

8/3 = 2*pi/w

w = (2*pi)*(3/8) = pi*(6/8)

where pi = 3.14

Then we have:

w =  pi*(6/8)

A = 4

M = 2

p = 0

Then the cosine function is:

f(x) = 4*cos(pi*(6/8)*x) + 2.

1/3 divided by 6 CAN ANYONE ANSWER THIS?

Answers

Answer:

1/18

Step-by-step explanation:

Answer:

1/18

Step-by-step explanation:

1/3 / 6/1 =1/3 x 1/6 = 1/18

ill mark brainlist plss he,p

Answers

Answer:

blue and red

Step-by-step explanation:

hope it helped

Two boards are placed end to end to make a walkway. One board is 5 feet 11 inches long, and the other board is 4 feet 6 inches long. How long is the walkway?
Write your answer in feet and inches. Use a number less than 12 for inches.

Answers

Answer:

10 feet 5 inches long

Step-by-step explanation:

12 inches = 1 foot

11 inches + 6 inches = 17 inches = 1 foot 5 inches

1 foot 5 inches + 5 feet + 4 feet = 10 feet 5 inches

Therefore, the walking board is 10 feet 5 inches long

You know that a rope is no more than 100 feet long. You need to cut the rope into three pieces the second piece is to be three times as long as the first piece, and the third piece must be 18 feet long. What is the maximum length of the second piece?

Answers

Answer:

hi

Step-by-step explanation:

The rope is originally 100 ft. long. The first piece is 32 ft., leaving 100–32, or 68 ft.

Let n be the second piece, and n-30 be the third piece. Then:

n+n-30=68

2n=98

n=49

n-30=19

The second piece is 49 ft. long; the third piece is 19 ft. long ……..

answer the qui of the day you have 7 quetion to answer and i give you 20 ponits

Answers

Answer:

all of them are correct

Hiya! :)

Answer:

They are all correct

Hope this helped!!!

can you help thanks this is my last one!​

Answers

Each box should be 2. If you subtract the number next to x on both sides of each inequality, you end up with x > 2.

PS. Thanks for marking me brainliest on the other problem :)

Calculate the current in an Inductor if the energy stored is 240J and the Inductance is 24H.​

Answers

Answer:

Current, I = 4.47 Amperes.

Step-by-step explanation:

Given the following data;

Inductance = 24H

Energy stored, Eind = 240J

To find the current;

The energy stored in an inductor is given by the formula;

Eind = ½LI²

240 = ½*24*I²

Cross-multiplying, we have;

480 = 24I²

I² = 480/24

I² = 20

Taking the square root of both sides, we have;

Current, I = 4.47 Amp

A bag with 8 marbles has 4 red marbles, 3 blue marbles, and 1 yellow marble. A marble is chosen from the bag at random. What is the probability that it is red?
Write your answer as a fraction in simplest form.

Answers

Answer:

P = 4 / ( 4 + 3 +1 )

= 4 / 8

= 4 / 8 =  1 / 2

Hope it helps

Please mark me as the brainliest

Thank you

The probability that it is red is 1/2.

what is Probability?

Probability refers to potential. A random event's occurrence is the subject of this area of mathematics.

The range of the value is 0 to 1. Mathematics has incorporated probability to forecast the likelihood of various events.

The degree to which something is likely to happen is basically what probability means.

Given:

A bag with 8 marbles

4 red marbles,

3 blue marbles,

and 1 yellow marble.

So, the probability that it is red

= 4 / ( 8)

= 1/2

Hence, the probability that it is red is 1/2.

Learn more about probability here:

https://brainly.com/question/11234923

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What is 7.456283 rounded to the nearest hundred thousandths place?​

Answers

The answer will be 7.45628

Use Law of Sines or Law of Cosines to solve for the missing parts of each triangle​

Answers

Answer:

[tex]x = 9.7[/tex]

Step-by-step explanation:

Given

The attached triangle

Required

Find x

Using law of sine, we have:

[tex]\frac{a}{sin A} = \frac{b}{Sin B}[/tex]

So, we have:

[tex]\frac{x}{sin 32} = \frac{18}{Sin 100}[/tex]

Make x the subject

[tex]x = \frac{18 * sin 32}{Sin 100}[/tex]

[tex]x = \frac{18 * 0.5299}{0.9848}[/tex]

[tex]x = 9.685[/tex]

[tex]x = 9.7[/tex] -- approximated

Joe bought a video game that was 20% off. The game was originally $55. What was the sale price of the game?

Answers

Answer: $11
Explanation: 55 times .2
The price is $44
55*0.2=11
55-11
=44

Can someone answer my question please if you know the answer
Answer choices:
F. 1/2
G. 2/5
H. 1/10
J. 3/5

Answers

Answer:

G. 2/5

add the total amount of bows then find out of that much how many are purple

Answer:

4/10 (2/5)

Step-by-step explanation:

Add all the bows together and then add ur number to the fraction.

EX: 1 blue bow, 6 purple bows, 6, pink bows what is the possibility to get a blue bow?

Add them all together, and then the denominator would be 13. So, there is one bow which means 1 in a 13 chance you will get the blue bow.

1 por 3) Jacksons buys a book for $12.85 and spends $5.89 for lunch. How much more did the book cost than lunch? *​

Answers

Answer:

$6.96 more was the book than the lunch

Step-by-step explanation:

do cost of the book subtract the cost of the lunch forget the decimals and just subtract like normally. then at the end bring down the decimals, hope this helps

there are only two lines of symmetry in a circle true or false​

Answers

Answer:False

Step-by-step explanation: a circle has infinite lines of symmetry an oval has two

Can someone please help!!

Answers

Answer:

the second to last one!!!

Step-by-step explanation:

hope this helps

y у
45°
x 100°
y = [?

Answers

Y=55° ................

The value of y is 55°.

What is a triangle?

It is a two-dimensional figure which has three sides and the sum of the three angles is equal to 180 degrees.

We have,

x and 100° together form a straight angle.

x + 100 = 180

x = 180 - 100

x = 80

Now,

45° + x + y = 180

45 + 80 + y = 180

y = 180 - 125

y = 55°

Thus,

y = 55°.

Learn more about triangles here:

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6 3/4"
What is 6 divided by 3/4

Answers

Answer:

8

Step-by-step explanation:

6÷[tex]\frac{3}{4}[/tex]

To make it easier, let's write 6 as a fraction.

[tex]6=\frac{6}{1}[/tex]

Now we get:

[tex]\frac{6}{1}[/tex]÷[tex]\frac{3}{4}[/tex]

Flip the numbers of [tex]\frac{3}{4}[/tex] and multiply instead of dividing and we get:

[tex]\frac{6}{1} *\frac{4}{3}=\frac{24}{3} =8[/tex]

Answer: 8

Step-by-step explanation:

6/1 * 3/4

cross multiply

8

Area = 120 yd"
- 10 yd
Find the Height



Please help me

Answers

area=hxw
h=a/w
h=120/10
12=120/10
h=12

Please answer both question above and below



A trapezoid has bases that measure 9 cm and 5 cm. The height of the figure is 4 cm.

What is the area of the trapezoid?

28 cm
36 cm
45 cm
90 cm

Answers

Answer:

Step-by-step explanation:

Could u attach a clear image??

What is the answer ?

Answers

Answer:

20x + -10xy

Step-by-step explanation:

10x · 2 ⇒ 20x

10x · -y ⇒ -10xy

Therefore, it is 20x - 10xy.

Answer:

Check pdf

Step-by-step explanation:

Find the area of the triangle. Round your answer to the nearest 10th. 10 6​

Answers

Answer:

the answer is 30. you will get 30 for your answer

You are the manager of a firm that sells its product in a competitive market at a price of $48. Your firm's cost function is C = 60 + 2Q 2. Your firm's maximum profits are

Answers

Answer:

the correct answer is truly

Step-by-step explanation:

STOP CHEATING ON THID APP

Represent 42 divided by 6 = 7 using subtraction

Answers

Answer:

42 - 6 - 6 - 6 - 6 - 6 - 6 - 6 = 0

or

42 - 7 - 7 - 7 - 7 - 7 - 7 = 0

349324923420 × 4π × 9π × 9908=?????

FREE AWARD!!!!!

Answers

1.2297528e+18

There ya go

What is 999999999999999999e+99999999999999999999x999999999999999999999e+999999999999999

(my friends challenged me)

Answers

Answer:

I believe the answer for this would be infinity

There is no answer to this question it is undefined

I need help Please help me

Answers

What do u need help on??
72 should be right !

Got that 11•6 + 3•2

66+6= 72

• En un vuelo con 200 pasajeros que se
dirigía a Miami, algunos pasajeros (clase
económica) pagaron $200.00 y otros
(primera clase) $250.00 por sus boletos
de avión. Si los ingresos por concepto de
venta de boletos en ese vuelo fueron de
$44,000.00, ¿cuántos boletos se
vendieron de cada categoría?

Answers

Answer:

1356545986--&_67ghtyojioftu?fuñt?fufldtuñf

5x (-3)
A .The amount of money a snack bar earns for selling 3 sandwiches for $5 per sandwich
B.The temperature change as it decreases 5 degrees every hour for 3 hours

С. A child grew 3 inches each year for 5 years
D.The change in elevation of a submarine as thinks 3 meters every second for 5 seconds

Answers

Answer:

you're answer is negative 15

A recipe uses 3 eggs to make 2 dozen cookies. There are 12 cookies in 1 dozen. How many eggs are used to make 6 dozen cookies? A.3 B.6 C.9 D.12 please help it would mean a lot <3

Answers

Answer:

C.9

Step-by-step explanation:

2 doz =3eggs

4 doz = 6 eggs

6 doz = 9 eggs

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