Answer:
60 push-ups
Step-by-step explanation:
Set up a ratio to represent the problem:
Molly : Liza
10 : 15
40 : ?
How did we get from 10 to 40?
You multiply by 4. Therefore, multiply by 4 on both sides of the ratio.
10 : 15
x4 x4
40 : 60
So, Liza does 60 push-ups while Molly does 40.
Answer:
(H)^2=(B)^2 +(P)^2
(13cm)^2=(12cm)^2 +(P)^2
169cm^2=144cm^2 +(P)^2
169cm^2-144cm^2 =(P)^2
25cm^2 = (P)^2
Now taking square root on both sides
5cm = P
Step-by-step explanation:
Answer: 9
Step-by-step explanation:
When you multiply 9*9, you get 81 whose sum is 9 (8+1)
Likewise, 9*8=72( 7+2=9)
Answer:
y=4x-1
Step-by-step explanation:
the lines can be written in their slope intercept form which is y=mx+b
m= slope=4
b=the intercept point=-1
so we have:
y=4x-1
Answer:
Step-by-step explanation:
Given that,
A bricklayer needs to order 6300kg of building sand.
1 grain of this sand weighs 
.
We need to find how many grains of sand are there in 6300 kg.
It can be just calculated as follows :
1 grain of sand =
or
= 90000000 grans of sand
So, 6300 kg is equal to .
