Answer:
Answer: <u> </u><u> </u><u>d</u><u> </u><u>is</u><u> </u><u>2</u><u>0</u><u> </u>
Step-by-step explanation:
k is a constant of proportionality
• When p = 3, d = 5.
• Therefore, equation becomes;
• Let's find d when p is 12;
180:15
Divide by 5
36:3
Divide by 3
12:1 is your simplified ratio.
4x +8y=64
subtract 8y on both sides
4x=-8y +64
divide by 4 both sides with all #
x=-2y+16
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%
Hi there,
0.06 x 10 = 0.6
Hope this helps :)
