Answer:
22
Step-by-step explanation:
10^2-9(9)+3
100-81+3
19+3
22
Answer:
-2
Step-by-step explanation:
(5 - a) = 20 + (6a -1) . . . . . 5-a is 20 greater than 6a-1
5 = 7a +19 . . . . . . . . . . . . . add a, collect terms
-14 = 7a . . . . . . . . . . . . . . . subtract 19
-2 = a . . . . . . . . . . . . . . . . divide by 7
The value of the variable is -2.
_____
<u>Check</u>
5 - (-2) = 7
6(-2) -1 = -13
7 is 20 greater than -13, so the answer checks OK.
Answer:
Cost in shop A is lesser.
Step-by-step explanation:
Given:
Shop A 4 batteries cost = £1.60
Shop B 6 batteries cost = £2.70
Find:
Lower price
Computation:
Cost in shop A = £1.60 / 4
Cost in shop A = £0.4
Cost in shop B = £2.70 / 6
Cost in shop B = £0.45
Cost in shop A is lesser.
Answer:
4.8 miles
Step-by-step explanation:
We can write a ratio to solve
6 miles x miles
------------ = --------------
55 minutes 44 minutes
Using cross products
6 * 44 = 55 * x
Divide each side by 55
6*44/55 = 55x/55
4.8 miles = x
Answer
-8\leq 7x\\
Step-by-step explanation:
