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

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Answer:

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Answer:

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Step-by-step explanation:

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Answer:

all of them are correct

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Answer:

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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

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

Got that 11•6 + 3•2

66+6= 72

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

Answers

The answer will be 7.45628

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.

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:

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Answers

Answer:

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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

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

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

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°.

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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°.

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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

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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

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Answers

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349324923420 × 4π × 9π × 9908=?????

FREE AWARD!!!!!

Answers

1.2297528e+18

There ya go

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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.

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

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

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

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Answers

Answer:False

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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.

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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

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??

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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:

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 :)

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

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
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