Answer:
73
Step-by-step explanation:
Givens
d = 3
Equation 7d^2 + 10 = ?
Solution
7*3*3 + 10
7*9 + 10
63 + 10 = 73
Answer:
$120.
Step-by-step explanation:
The amount he sells the tool kit for = 80 + 20% of 80
= 80 + 16
= $96.
Let m be the marked price, then
m - 0.20m = 96
0.8m = 96
m = $120.
Answer:
options a is answer
Step-by-step explanation:
options a is answer
Answer:
Brainliest please
50years is their ages now
Step-by-step explanation:
<h3>use algebra</h3>
onyango= 3a
daughter= let it be a
son= he is 4 times less than his father, 3/4a
8years
8+3a+a+8+3/4a+a
a+8+3/4a+a
7/4+1 = 8/4a+8 + 12y 20= 8/4a = 40years is the father 8 years later, so his present age is 40-8
32y= father now
daughter= 1/3×32=10years
son= 1/4×32= 8yrs
add 32+10+8= 50years
