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
OLEGan [10]
3 years ago
7

Mary is five times as old as Fred. In three years Mary will be 4 times as old as Fred. Find their present ages?

Mathematics
1 answer:
igomit [66]3 years ago
5 0

ans

here let mary age be x and fred be y

1st equation

x= 5y

2nd equation

x+3 =4(y+3)

now from 1st equation putting value of x in equation 2

x+3 = 4y+12

5y+3 = 4y +12

y = 9

so fred is 9 and mary is 45

You might be interested in
4p+8=12p-16????????????
AnnZ [28]
Answer twenty nine the answers 29 because 4 + 8=12+6=29
5 0
3 years ago
Read 2 more answers
Find the value of x​
Ivahew [28]

Answer:

x=27

Step-by-step explanation:

The sum of the angles of a triangle is 180 degrees

90 + x+23 + x+13 = 180

Combine like terms

126 +2x = 180

Subtract 126 from each side

126-126 +2x=180-126

2x =54

Divide by 2

2x/2 = 54/2

x = 27

4 0
3 years ago
Mel randomly selects a coin 150 times selecting a dime 30 times, the experimental probability is 1/5 what is the theoretical pro
Stolb23 [73]

Answer:

Step-by-step explanation:

We can calculate probability by looking at the outcomes of an experiment or by reasoning What is the theoretical probability that a fair coin lands on heads? Choose 1 answer:  Random numbers for experimental probability. This means that if we roll a die 60 times we can expect each of the six faces to come up.

Hope this helps.

Please give me brainliest if it is correct

6 0
3 years ago
The original rectangle has a perimeter of 16
zaharov [31]

As we can see that the sides of the rectangle have been doubled

6.2 ft changed to 12.4 ft

Now when the sides have been doubled

the Perimeter will also be doubled

So the perimeter of new rectangle should be the double the perimeter of old rectangle

So perimeter of new rectangle = 2 (16 ) = 32 feet

Option C is correct

7 0
3 years ago
A swimming pool has a diameter of 24 feet. What is the minimum amount of fabric needed to cover the pool if the cover must hang
Alika [10]

Answer:

531.167 ft²

Step-by-step explanation:

Given data

Dimension of pool

Diameter =24ft

Radius =12ft

If the cover must hang by 1ft around, then the diameter is 26ft

Radius =13ft

Area of cover = πr²

Substitute

Area = 3.142*13²

Area =3.143*169

Area =531.167 ft²

Hence the minimum area is 531.167 ft²

5 0
3 years ago
Other questions:
  • You need 1 1/2 sticks of butter for every 24 cookies you bake how much butter will you need for 48 and 72 cookies?
    11·2 answers
  • Is the first quartile 12
    9·1 answer
  • Round 38807 to the nearest thousand
    5·2 answers
  • PLS HELP ME WITH 8. 3, 4, and 5 (SHOW WORKKK!!)
    12·2 answers
  • Help me please<br> thx so much<br> have a good one
    8·1 answer
  • -9 ( greater less than)<br> (&gt; with a line under it) <br> 2m + 2 - 3
    7·1 answer
  • Page<br>Date<br>#<br>Solve sauare completing method<br>2x^2-9x-5 =0​
    14·1 answer
  • Does anyone know what 3/5x - 4 × 1/8w is?​
    14·1 answer
  • Select the graph that represents the inequality below NO LINKS
    13·1 answer
  • Select the correct answer. Each statement describes a transformation of the graph of y = x. Which statement correctly describes
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!