Mathematics College

Christine is 4 years younger than Mark. 3 years from now, she will be two-thirds as old as Mark find their present ages.Complete solution​

Answers

Answer 1

Answer:Mark Is 9 years old; Christine is 5 years old

Step-by-step explanation:

Present age

LET  mark age be x

Christine be x-4 yrs

In 3 yrs Time

Mark will be x+3 yrs old

Christine  will be  (x -4 +3) = x-1 years old

Also, In 3 years time

Christine  = 2/3 Mark

such that

  x-1 = 2/3(x+3)

  x -1= 2x+6 / 3

    3x  -3= 2x+6

      3X--2X = 6+3

         =X=9

Mark Is 9 years old

Christine is   x -4 = 9-4=5 years old

Related Questions

The value of an investment decreased by 10%. The original amount was $75.00. What is the current value of the investment?

Answers

Answer:

82.5 is the right answer

Write a quadratic function that reflects the x axis, stretches by a factor of 5, and shifts left 6 and up 3

Answers

Answer:

y=(x+6)^5+3

Step-by-step explanation:

What is the missing number? x:50 = 12:24 ​

Answers

Answer:

Step-by-step explanation:

x/50 = 12/24

24x = 600

x= 25

GIVING 100 PTS AFTER ITS SOLVED I WILL GIVE BECAUSE I CANT TRUST

Answers

Answer: A

Step-by-step explanation

bc it seemed legit-

Answer:

A.

Step-by-step explanation:

wish u would have got better grade

Help help help plz plz

Answers

Answer:2nd i think i hope this helps ! :)

Step-by-step explanation:

Anybody know how to solve this?

Answers

Answer:

1

Step-by-step explanation:

Anything to the 0 power is 1.

Hope this helps!

:)

Answer:

the answer is one.

Step-by-step explanation:

anything to the power of zero is one

PLEASE HELP

Jason has a business that prints posters. He is working on an order for printing 1500 posters. He only has 400 posters left to print to complete the order.

Jason will only leave for the day if he has printed
7/10 of the posters for the order.

Can he leave for the day right now?

A. No! Jason has only printed 27/100 of the posters needed.

B. Yes! Jason has printed 73/100 of the posters needed.

С. Yes! Jason has printed exactly 7/10 of the posters needed.

D. No! Jason has only printed 29/50 of the posters needed

Answers

Answer:

B. Yes! Jason has printed 73/100 of the posters needed.

Step-by-step explanation:

7/10(1500) = 1050 minimum to print

1500-400 = 1100 printed

1100/1500 = 73/100

Use Euler’s formula to write -12 sqrt3 +12i in exponential form

Answers

Should be D on edge. 24e i 5pi/6, Or

649-14-07-00-00_files/i0150005,jpg(image name)

determine the intercepts of the line
x-intercept _,_
y- intercept _,_
HELP ASAP

Answers

x-intercept: (7,0)
y-intercept: (0,2)

Please help! It’s due soon!

Answers

Answer:

0.083

Step-by-step explanation:

151 divided by 1800 is 0.083

might be wrong WARNING

Terrence played video games for 1/3 of an hour and walked his dog for 3/5 of an hour. Did Terrence spend more time playing video games or walking his dog?

Answers

Answer:

Terrence spend more time walking his dog .

Step-by-step explanation:

3/5 = 0.6

1/3 = 0.333

0.6>0.333

What's the expanded notation of 5.34

Answers

The expanded notation is 5 + .3 + .04

I need help PlEaSeEe
Bethany has a sticker book with 200 pages.
Each sticker takes up 1/8 page. How many stickers can she put in the book?

A.
250 stickers

B.
25 stickers

C.
1,600 stickers

D.
1,000 stickers

Answers

Answer:

25 stickers.

Step-by-step explanation:

I hope this helps! Maybe you can mark this brainly? Hope you have a amazing day! <3

...i dont know the answer​

Answers

i don’t know the answer either

What are the means?

Answers

Answer:

either 7 and 21 or 1 and 3 I believe I'm terribly sorry if I'm wrong friend

Please help!!!!!????

Answers

Answer:

I think it's decameter^^

h(x)=-2x^(2)+3x what is the value of h(-3)

Answers

Answer:

h(-3) = -27

Step-by-step explanation:

Given that,

[tex]h(x)=-2x^{(2)}+3x[/tex]

We need to find the value of h(-3).

Put x = -3 in the given expression.

[tex]h(-3)=-2(-3)^{(2)}+3(-3)\\\\=-2\times 9-9\\\\=-27[/tex]

So, the value of h(-3) is equal to -27.

Given f(x)=(1/2x)-5, find f^-1(x).

Answers

Answer:

[tex]f^{-1}[/tex](x)=2x+10

Step-by-step explanation:

f(x)=[tex]\frac{x}{2}[/tex]-5

Let y= [tex]\frac{x}{2}[/tex]-5

y= [tex]\frac{y}{2}[/tex]-5

x+5= [tex]\frac{y}{2}[/tex]

Both side multiple 2,

2x+10=y

[tex]f^{-1}[/tex](x)=2x+10

Explain how to find 40% of a number using friendly percents

Answers

Answer:

here's your solution

=> percent means divided by 100

=> to find 40% of a number ,

=> we have to think for a number here it

is not given

=> so, we have to assume it , then let the

number be X

=> now ,. equation= 40/100*x

=> 40/100*X

hope it helps

help me please!!! thank you!!!

Answers

Answer:

254.47 inches squared

Step-by-step explanation:

Area of a circle is

[tex]\pi {r}^{2} [/tex]

so to find the radius we half the diameter( which here is 18 inches) which equals to 9

we replace r to 9 because that's the radius

[tex]\pi \times {9}^{2} [/tex]

which is 254.47 inches squared

Susan works at the local Department store. She makes a 2% commission on all sales. She sells jewelry worth $20,000. What is her commission

Answers

Answer:

I think it's 2000

Step-by-step explanation:

HELP THIS IS DUE SOON

Answers

There should be 40 pages

Answer:

the book has 40 pages

Step-by-step explanation:

so he has read 90 percent and has 4 pages left. So 10 percent is 4 pages.

10 times 10 is 100. 4 times 10 is 40. The entire book is 40 pages.

10 percent equals 4 pages

20 percent percent 8 pages

30 percent  is 12 pages

40 percent is 16 pages

50 percent is 20 pages

60 percent is 24 pages

70 percent is 28 pages

80 percent is 32 pages

90 percent is 36 pages

100 percent is 40 pages

Find the value of x pls help again XD

Answers

Answer:

B

Step-by-step explanation:

[tex]90 = 60 + 3x \\ 30 = 3x \\ x = 10[/tex]

Answer:

10

Step-by-step explanation:

Find two integers whose sum is 11 and product is 18

Answers

9+2=11
9x2=18

This means that the integers are 9 and 2 :)

Answer:

9,2 and 2,9

Step-by-step explanation:

x+y=11

xy=18

Since they are asking for integers you can simply look through and see what integers multiply out to 18 and then check if they add up to 11. The answers for x and y are 9 and 2. but 9 can be for y as well and 2 can be for x.

How to solve it algebraically

18/y=x

x+y=11(insert 18/y for x)

18/y+y=11(factor it)

(y^2+18)/y=11(multiply both sides by y)

y^2+18=11y (subtract both sides by 11y)

y^2-11y+18=0

complete the square

y^2-11y    = -18

(-11/2)^2=121/4 (add in on both sides)

y^2-11y+121/4=49/4

(y-11/2)^2=49/4 (square root both sides)

y-11/2=±7/2

y=11/2±7/2

y=9 or y=2

so

x=9 or x=2

Hope this helps :)

Please give brainliest

in a classroom of 1/6 of the students were wearing blue and 2/3 are wearing white there are thirty six students in the class how many students are wearing a shirt other than blue or white

Answers

Answer:

6

Step-by-step explanation:

1/6 of 36=6

2/3 of 36= 24

24+6=30

36-30=6

BRAINLIEST
VOLUME OF A SPHERE

Answers

Answer:

[tex]\displaystyle V = 972 \pi \ ft^3[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Geometry

Volume of a Sphere Formula: [tex]\displaystyle V = \frac{4}{3} \pi r^3[/tex]

V is volumer is radius

Step-by-step explanation:

Step 1: Define

Radius r = 9 ft

Step 2: Solve for V

Substitute in r [Volume of a Sphere Formula]:                                               [tex]\displaystyle V = \frac{4}{3} \pi (9 \ ft)^3[/tex][Volume] Evaluate exponents:                                                                         [tex]\displaystyle V = \frac{4}{3} \pi (729 \ ft^3)[/tex][Volume] Multiply:                                                                                             [tex]\displaystyle V = 972 \pi \ ft^3[/tex]

How many real cube roots does –343 have?

Answers

Answer:

Number (n)

Cubes (n3)

1-1

2-8

3-27

4-64

5-125

6-216

7-343

8-512

9-729

10-1000

Step-by-step explanation:

True or False? A circle could be circumscribed about the quadrilateral below. c 80° A. True 95° B. False 85°​

Answers

Answer:

False

Step-by-step explanation:

The circle could be circumscribed about the quadrilateral is false because the sum of the opposite angles is not 180 degrees.

What is quadrilateral?

It is defined as the four-sided polygon in geometry having four edges and four corners. Two pairs of congruent sides, and it has one pair of opposite congruent angles.

As we know, the circle can be circumscribed around a quadrilateral if and only if the quadrilateral's opposite angles add up to 180 degrees.

But,

80 + 85 < 180

100 + 95 > 180

Thus, the circle could be circumscribed about the quadrilateral is false because the sum of the opposite angles is not 180 degrees.

Learn more about the quadrilateral here:

brainly.com/question/6321910

#SPJ2

The frog jumped 7/8 of a foot on the first jump and 2/3 of a foot on the second
jump. How many feet did the frog jump in total?
feet
Pls show mercy!!!!!

Answers

He jumped 1.542 feet
7/8 + 2/3

What is the measure of the exterior angle shown in the figure below?​

Answers

Answer:Measures of Exterior Angles

They are formed on the outer part, that is, the exterior of the angle.

The corresponding sum of the exterior and interior angles formed on the same side = 180°.

Step-by-step explanation: is that what u mean?

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