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
german
3 years ago
7

IS 3.

Mathematics
1 answer:
coldgirl [10]3 years ago
6 0

Answer:

1. a. 2,000

2. b. 10 years

3. a. 6.72937

4. d. 9%

Step-by-step explanation:

1. If 58% are boys, the percentage of girls is:

= 100 - 58

= 42%

That means 840 is 42% of the students in class. The students in class are therefore:

= 840 / 42%

= 2,000 students

2. If Birr 300 is invested at 6% per year, the amount in interest it earns per year is:

= 300 * 6%

= Birr 18

To get to Birr 180, it would take:

= 180/18

= 10 years

3. When a number is in percentage that means that it is a fraction with the denominator being 100. The number is decimal will therefore be it divided by 100:

= 672.937/100

= 6.72937

4. The investment accrued Birr 12 out of Birr 400 in 4 months. This means that it increased by:

= 12/400

= 3%

A year can be divided into three by 4 months. This means that the yearly rate is therefore:

= 3% * 3

= 9%

You might be interested in
There are two right circular cylinders. The radius of the first cylinder is 4 centimeters, and its height is 5 centimeters. The
k0ka [10]

Answer: 9 : 1

Step-by-step explanation:

The formula for determining the volume of a cylinder is expressed as

Volume = πr²h

Where

r represents the radius of the cylinder.

h represents the height of the cylinder.

π is a constant

Considering the first cylinder,

Radius = 4 cm

Height = 5 cm

Volume = π × 4² × 5 = 80π cm³

Considering the second cylinder,

Radius = 12 cm

Height = 5 cm

Volume = π × 12² × 5 = 720π cm³

The ratio of the volume of the larger cylinder to the volume of the smaller cylinder is

720π/80π = 9/1

3 0
4 years ago
The Dowers make pumpkin pie. If each person wants three slices of pie, and each pie is Cut into 9 slices, how many pies do they
Mrac [35]

The Dowers need to make 5 pies for 15 people.

Step-by-step explanation:

Given,

1 person = 3 slices of pie

15 persons = 15*3 = 45 slices of pie

It is also given that;

9 slices of pie = 1 whole pie

1 slice of pie = \frac{1}{9}\ pie

45 slices of pie = \frac{1}{9}*45

45 slices of pie = 5 whole pies

The Dowers need to make 5 pies for 15 people.

Keywords: multiplication, division

Learn more about multiplication at:

  • brainly.com/question/4021035
  • brainly.com/question/4034547

#LearnwithBrainly

7 0
3 years ago
What is the equation for the line?
Lemur [1.5K]
Linear function
y=mx + b
y= -2x - 4
7 0
4 years ago
Subtract: 5 – 3.19<br> None of these is correct.<br> 1.81<br> 2.19<br> 3.14
klasskru [66]
<h2>__________________</h2><h2>● <u>Question</u> ●</h2><h3> Subtract: 5 – 3.19</h3><h2>__________________</h2><h2>● <u>Solution</u> ●</h2>

5.00

- 3.19

-------

1.81

-------

<h2>__________________</h2><h2>● <u>Final Answer</u> ●</h2><h2>1.81</h2><h2>__________________</h2>
3 0
2 years ago
Read 2 more answers
Dilate the figure using a scale factor of 3/4 and rotate the new image 90° counterclockwise
GREYUIT [131]
The new points will be A' (-6,9) B'(-6,-3)C'(6,-3) then graph them. REMEMBER: if the scale factor is greater than 1 the image will shrink. If the scale factor is less than one the image will enlarge
5 0
4 years ago
Other questions:
  • 36.78 divided by 2.4 show all work
    14·1 answer
  • Which of these is a key feature of an experimental study? A. The treatment in the experiment should be simple enough for each in
    8·1 answer
  • Which of the following quotients are negative? Check all that apply.
    7·1 answer
  • The sum of three consecutive even integers is 258. write an equation ad solve to find the integers
    12·2 answers
  • The fair spinner shown in the diagram above is spun.
    13·1 answer
  • What would be the volume of a sphere if the radius is 6 in? Round to nearest tenth if needed
    10·1 answer
  • Write a function and solve:
    14·1 answer
  • The price of the shirt on sale is 80% of the original price. If the original price was 35$, what is the price of the shirt on sa
    12·1 answer
  • PLEASE HELP
    12·1 answer
  • Can you find the slope -intercept equation of each line code ?​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!