3 years ago

The weight of 72 books is 9 kg.what is the weight of 80 such books? How many such books would weigh 6kg?

1 answer:

4 0

9 divided by 72 = 0.125
0.125 is the weight of one book
0.125 times 80 = 10kg.
So 80 books weight 10kg.
72 divided by 9 = 8 books make up 1 kg.
8 times 6 =48

You might be interested in

Is the expression 30 + x-x2 in standard form?

Anastasy [175]

It is but it needs to be rearranged to x^2-2x+30

4 0

3 years ago

Read 2 more answers

Find the area of the circle in terms of Pi. (TT)<br> 10 cm<br> A

Alinara [238K]

Answer:

A≈314.16

Step-by-step explanation:

7 0

3 years ago

9: The points (−2,5) and (5,−9) lie on the same line. What is its equation in slope-intercept form of this line? y= x +

iren2701 [21]

Answer:

y=negative 2x+1

Step-by-step explanation:

rise over run negative 14 over 7 equals negative 2 and the y intercept is 1

5 0

2 years ago

What is the square root of 29,

sweet [91]

Nothing times itself will equal 29, but in decimal form only is 5.38

8 0

3 years ago

Select the function that represents the simple interest formula.

Anit [1.1K]

Answer:

D. A(n) = P + (n-1)i*P

Step-by-step explanation:

The formula to calculate the simple interest is:

$SI = \frac{Pnr}{100}$

Replace i by $\frac{r}{100}$ , then

SI = Pni

where n is the number of years.

So, for n-1 years, the simple interest is:

SI = P(n-1)*i

The Total amount is:

A(n) = P + (n-1)i*P

8 0

3 years ago

Read 2 more answers