Leslie currently spends $20 to have her yard raked each fall. Leslie is considering buying a leaf blower for $70. The model she is considering usually lasts four years. What is the total monetary cost or benefit of buying the leaf blower?
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A small publishing company is planning to publish a new book. The production costs will include one-time fixed costs (such as editing) and variable costs (such as printing). The one-time fixed costs will total $60,239. The variable costs will be $10.50per book. The publisher will sell the finished product to bookstores at a price of $25.25per book. How many books must the publisher produce and sell so that the production costs will equal the money from sales?
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you need to find when -3n=0 and when 2n-5=0
a.
-3n=0
n=0
b.
2n-5=0
2n=5
n=2.5
answer n = 0, 2.5
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2.05B+0.85F=$19.10 - This equation is set equal to total price.
B+F=14 - This equation is set equal to total number of items.
Subtract the F in the bottom equation.
B=14-F
Put this in place of B in the first equation.
2.05(14-F)+0.85F=19.10
Make sure you distribute the 2.05 properly, over both the 14 and the F.
28.7 - 2.05F+0.85F=19.10
Collect like terms for the F values.
28.7 - 1.2F=19.10
Subtract 28.7 from both sides.
-1.2F=-9.6
Divide by -1.2 on both sides.
F=8
Put this value in place of F in either equation.
B+8=14
B=6
So F=8 and B=6.
5(x - 8) - 7 = 40
B)
5(8 - x) - 7 = 40
C)
7(x - 8) - 5 = 40
D)
7(8 - x) - 5 = 40
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Answer : D 7(8-x)-5 = 40
The product of eight minus a number and seven equals forty when decreased by five
Let the unknown number be x
eight minus a number means 8 -x
For product we multiply
The product of eight minus a number and seven
It means the product of 8-x and 7
So expression becomes 7(8-x)
The product of eight minus a number and seven equals forty when decreased by five
To decrease by 5 we subtract 5
7 (8-x) -5 and this equals 40
So equation becomes 7(8-x)-5 = 40
let X = unknown number
eigth minus a number is 8 - x. since the product is seven and eight minus a number then 7 * [8-x] or 7(8-5).
40 is its equivalent when the product is decreased by 5; therefore, 7(8-x) - 5= 40.
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Answer: Rounak has 100 pens now.
3x _ 2y = 8
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x = 4, y = 2
x = 4, y = _2
x = _2, y = 4
x = 2, y = 4
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2(4) + 6(2) = 20
3(4) _ 2(2) = 8
the graph is so easy, please try!!
Answer:
Option A is correct.
x =4 , y = 2
Explanation:
Given the system of equation:
......[1]
.....[2]
Multiply equation [2] by 3 both sides we get;
Using distributive property:
.....[3]
Add equation [1] and [3], to get eliminate y we get;
Combine like terms we have;
Divide both sides by 11 we get;
Substitute the value of x =4 in [1] we get;
2(4) + 6y = 20
8 + 6y = 20
Subtract 8 from both sides we have;
6y = 12
Divide both sides by 6 we have;
y = 2
Therefore, the values of x and y are; 4 and 2.
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From the second minute to nine minutes, each minute costs $0.22.
Therefore, the total cost within 10 minutes is
$0.54 + 9($0.22) = $2.52