1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Darya [45]
2 years ago
11

jack's age next year will be twice jill's age last year. their present ages total 45. how old is each no

Mathematics
1 answer:
Irina18 [472]2 years ago
8 0

We get the age of Jack is 29 years and the age of Jill is 16 years.

We are given that the sum of Jack's age and Jill's age is 45 years.

Let Jack's age be x.

Let Jill's age be y.

x + y = 45

x = 45 - y

Now, we are also given that jack's age next year will be twice Jill's age last year.

Jack's age next year = x + 1

Jill's age last year = y - 1

ATQ, We get the equation as:

x + 1 = 2( y - 1)

x + 1 = 2 y - 2

x = 2 y - 2 - 1

x = 2 y - 3

We get that:

45 - y = 2 y - 3

2 y + y = 45 + 3

3 y = 48

y = 48 / 3

y = 16 years.

x + y = 45

x + 16 = 45

x = 45 - 16

x = 29 years.

Therefore, we get the age of Jack is 29 years and the age of Jill is 16 years.

Learn more about equation here:

brainly.com/question/1214333

#SPJ4

You might be interested in
Write two prime numbers whose difference is 10?​
bagirrra123 [75]
23-13=10

Prime numbers : A whole number greater than 1 that can not be made by multiplying other whole numbers Prime numbers between 1 to 100 : 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, and 97 So, The two numbers whose difference is 10 are 13 and 23 23-13=10
3 0
3 years ago
How much is 1 over 6 times negative 6
notsponge [240]
It’s -1

1/6 x -6 is -1
4 0
2 years ago
Read 2 more answers
Use a calculator to find a decimal approximation for the following trigonometric function sin 28°48
Bumek [7]

The decimal approximation for the trigonometric function sin 28°48' is

Given the trigonometric function is sin 28°48'

The ratio between the adjacent side and the hypotenuse is called cos(θ), whereas the ratio between the opposite side and the hypotenuse is called sin(θ). The sin(θ) and cos(θ) values for a given triangle are constant regardless of the triangle's size.

To solve this, we are going to convert 28°48' into degrees first, using the conversion factor 1' = 1/60°

sin (28°48') = sin(28° ₊ (48 × 1/60)°)

= sin(28° ₊ (48 /60)°)

= sin(28° ₊ 4°/5)

= sin(28° ₊ 0.8°)

= sin(28.8°)

= 0.481753

Therefore sin (28°48') is 0.481753.

Learn more about Trigonometric functions here:

brainly.com/question/25618616

#SPJ9

5 0
1 year ago
The diameter of a circle is 36 yards. What is the circle's circumference?<br> Use 3.14 for .
Firlakuza [10]
Answer:
113.04

Explanation:
So, the formula is C=pi x d

Once you substitute in the number given the equation is now .. C= pi x 36

36 x 3.14=113.04

Therefore, the circles circumference is 113.04
6 0
3 years ago
Read 2 more answers
ANSWER ASAP GIVING BRAILIEST AND STUFF!
natita [175]

Answer:

24s^2, 54s^2, 96s^2

Step-by-step explanation:

Let s represent the initial side length of the cube.  Then the area of each face of the cube is A = 6s^2 (recalling that the area of a square of side length s is s^2).

a) Now suppose we double the side length.  The total area of the 6 faces of the cube will now be A = 6(2s)^2, or 24s^2 (a 24 times larger surface area),

b) tripled:  A = 6(3s)^2 = 54x^2

c) quadrupled?  A = 6(4s)^2 = 96s^2

6 0
3 years ago
Other questions:
  • On a scale drawing, the scale factor is 1/12. A plum tree is 7 inches tall on the scale drawing. What is the actual height of th
    12·1 answer
  • Find the mean <br> 5,-15,7,-13,1
    8·2 answers
  • What percent of 49.2 is 25.83
    15·1 answer
  • Need help with this?
    11·1 answer
  • James will need 180 cubic feet of concrete. The concrete mix delivery truck driver wants the order in cubic yards. How many cubi
    10·1 answer
  • 0,2,4,0,2,3,2,8,6
    7·2 answers
  • Value of 9 x 10 to the fourth power
    11·2 answers
  • Need help with this problem asap
    12·1 answer
  • Which expression has a value of -2? *<br> O 1-4+121<br> O 121 +1-41<br> O 141-121<br> O 1-21-1-41
    14·1 answer
  • The measure of angle R is 152º and the measure of angle S is 65°, find the measure of
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!