The last one would be incorrect. We are looking for PART of whatever N is. Multiply by the whole number 25 is definitely not what we want to do.
Hope I helped!
9514 1404 393
Answer:
x = 30
Step-by-step explanation:
Supplementary angles total 180°.
5x° +x° = 180°
6x = 180
x = 180/6 = 30
The value of x is 30.
Answer:
0
Step-by-step explanation:
-0.1(40)^2+4(40)
-160+160
0
The equation which can be used to find the number of quarters and nickels is; n + q = 84, 0.05n + 0.25q = 17.80.
<h3>Quarters and nickels</h3>
- Total coins = 84
- Total value = $17.80
let
- Number of quarters = q
- Number of nickels = n
n + q = 84
0.05n + 0.25q = 17.80
From equation (1)
n = 84 - q
Substitute into (2)
0.05n + 0.25q = 17.80
0.05(84 - q) + 0.25q = 17.80
4.2 - 0.05q + 0.25q = 17.80
- 0.05q + 0.25q = 17.80 - 4.2
0.20q = 13.60
q = 13.60 / 0.20
q = 68
Substitute q = 68 into
n + q = 84
n + 68 = 84
n = 84 - 68
n = 16
Therefore, the number of quarters and nickels are 68 and 16 respectively.
Learn more about quarters and nickels:
brainly.com/question/17127685
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Answer: Josh borrowed $ 876 to buy the computer.
Step-by-step explanation:
Formula for simple interest : I = Prt
, where P = principal amount
r= rate of interest ( in decimal)
t=time (in years)
Total amount with simple interest to pay : A = P+I
⇒ A = P +Prt
⇒ A = P(1 +rt) (i)
As per given , A = $1,244.34
r= 12.4% = 0.124
t= 3 years
Now, put these values in (i) , we get
Hence, Josh borrowed $ 876 to buy the computer.
