Answer:
6z+78
Step-by-step explanation:
6x10=60
6xz=6z
6x3=18
18+60=78
78+6z
Each note book cost 55 cents
10-5.05=4.95
4.95/9=0.55
Answer:
$144
Step-by-step explanation:
Use the simple interest formula, I = prt, where I is the interest money created, p is the starting amount, r is the interest rate as a decimal, and t is the amount of time.
Plug in the original amount, interest amount, and amount of time:
I = prt
I = 450(0.08)(4)
I = 144
So, $144 in simple interest is made in 4 years
Answer:
The Second One.
Step-by-step explanation:
(90 x 30) + (90 x 4) + (8 x 30) + (8 x 4)
This One simply Goes to the expression that (90*34)+(8*34)=(34)*(90+4) = (94*34)
Let x = cost of mango
y = c of apples
<span>8x+3y=18.
3x+5y=14.5 </span>
<span> </span>
<span>24x+9y=54
24x+40y=116
multiplying them with 3 and 8 resectively. </span>
<span>subtract one from the other we get </span>
<span>40y-9y=116-54 </span>
<span>31y=62 </span>
<span>y=2.
cost of apple=2$ per apple
</span><span>8x+3y=18,
8x+3(2)=18.
8x=12. x=12/8=1.5 </span>
<span>cost of mango i= 1.5 $ per mango
hope this helps</span>
