All categories

3 years ago

Maggie’s brother is 3 years younger than four times her age. The sum of their age is 22 how old is maggie

Mathematics

1 answer:

gayaneshka [121]3 years ago

8 0

Hey there!

Let's write this as a system of equations.

m+b=22

b= 4m-3

Let's plug our value for b into the first equation and solve for m.

m+4m-3=22

We combine like terms.

5m-3=22

We add 3 to both sides.

5m=25

We divide both sides by 5.

m=5

Therefore, Maggie is 5 years old.

I hope this helps!

You might be interested in

Find the average rate of change between n=1 and n=3

Vitek1552 [10]

Answer:

there is not enough information to solve

Step-by-step explanation:

You need two ordered pairs to calculate the average rate of change.

Let's say the value of the function at n = 1 is a, and the value of the function at n = 3 is b, then the average rate of change from n = 1 to n = 3 is

(b - a)/(3 - 1) = (b - a)/2

4 0

2 years ago

Find the LCM of 2 and 21

Alexus [3.1K]

The answer is 10 because it had

6 0

3 years ago

2. Calculate the angular speed of the 26-inch bicycle rotating at 200 revolutions per minute. Express your answer in radians per

Alexus [3.1K]

The angular velocity for this problem is given by:
Angular speed = 200 rev / min
The first thing you should keep in mind is the following conversion:
1 rev = 2π radians
Applying the conversion we have:
Angular speed = 200 * (2π)
Rewriting:
Angular speed = 200 * (2 * 3.14)
Angular speed = 1256 radians / minutes
Answer:
the angular speed is:
Angular speed = 1256 radians / minutes

4 0

3 years ago

Write your answer as an integer or as a decimal rounded to the nearest tenth

Savatey [412]

9514 1404 393

Answer:

8.7

Step-by-step explanation:

We have the side adjacent to the angle and we want the hypotenuse. The relevant trig relation is ...

Cos = Adjacent/Hypotenuse

Solving for the hypotenuse, we find ...

VW = XW/cos(36°) = 7/0.80901

VW ≈ 8.7

4 0

3 years ago

A research team is testing a product that will minimize wrinkles among women. Volunteers in the age group of 40 to 45 are includ

artcher [175]

There are mistakes in the answer options attached. These are the correct ones.

a. The group that received the bottle of solution is the control group.

b. The group that received the bottle of solution that did not contain the ingredients that are meant to lessen wrinkles is the control group.

c. Both the groups are control groups.

d. Neither group is an control group.

Answer:

B. The group that received the bottle of solution that did not contain the ingredients that are meant to lessen wrinkles is the control group

Step-by-step explanation:

In an experiment of this type, the control group is the group that does not contain the treatment. So in this group The effect of the treatment unknown unlike the experimental group which gets the treatment that the researcher is trying to find it's effect.

I. Conclusion, the group that got bottles that did not contain Ingredients for wrinkles lessening is the control group.

4 0

3 years ago