Answer:
40 is the total amount of cookies
32 is the amount left
Step-by-step explanation:
If 20% of cookies equal to 8 then to find how many are there in total we multiply 8 with 100 then divide it with 20
8 × 100 ÷ 20 = 40
Answer:
f(x) = -139
Step-by-step explanation:
f(x) = 3x^2 + 10 If f(-7)
f(-7)= 3 * -7^2 + 10
F(-7) = 3 * -49 + 10
f(-7) = -147 + 10
f(-7) = -139
Answer:
2/13
Step-by-step explanation:
4/14 × 7/13 when i simplify it becomes 2/13!!!
For this case, the first thing we must do is define variables.
We have then:
t: cost of the torch
b: cost of the battery
The cost of both items in £ is given by:
Therefore, we have the following equation:
Then, we know that:
The torch costs eleven times as much as the battery.
Substituting equation two in the equation we have:
Clearing the value of b we have:
Answer:
The cost of the battery is 0.43 £
