Answer:
wheres the figure ??
Step-by-step explanation:
Answer:
9
Step-by-step explanation:
We know that a=1/5. Therefore, we can substitute 1/5 in for a into the expression.
10a + 7
10(1/5)+7 <em>Multiply 1/5 and 10</em>
2+7 <em>Add 2 and 7 </em>
9
Answer:
what do we know?
we know that a quarter is $0.25 and a nickel is $0.05
4x$.25 = $1
20x$0.05 = $1
and we have 84 coin
n = the number of nickels
q = the number of quarters
(1) n + q = 84 and
(2) 5*n + 25*q = 100*11.80 (always work in cents)
(3) 5*n + 25*q = 1180
Now substitute n from equation (1) into equation (3) and get
5*(84 - q) + 25*q = 1180
420 - 5*q + 25*q = 1180
20*q = 1180 - 420
20*q = 760
q = 38
Then using equation (1), plug in q
n + 38 = 84
n = 46
now check these values.
Is (.05*38 + .25*46 = 11.80)?
Is (2.30 + 9.50 = 11.80)?
Is (11.80 = 11.80)? Yes
Step-by-step explanation:
Plz Mark me as brainliest
Answer:
7x + 28
Step-by-step explanation:
7(x+4)
= 7x + 28
The area formula is πr². Since, we are given the diameter we need to find the radius by dividing the diameter by 2.
radius = 20/2 = 10
Area = π(10)²
Area = 100π
The area of the pipe is 100π square units in term of pi.
Hope this helps :)
