Larry needed to by 5 books at the same price. After he uses a $30 gift card, he can spend no more than $50. What is the maximum cost of each book that he can buy?
Answers
Answer:
The maximum cost of each book will be $14 that Larry can buy.
Step-by-step explanation:
Given:
Gift card = $30
Maximum amount can be spend = $50
number of books need to buy = 5
We need to find maximum cost of each book.
Solution:
Let the cost of each book be 'x'.
So we can say that;
Sum of money of gift card and maximum money he can spend should be greater than or equal to number of books need to buy multiplied by cost of each book.
framing in equation form we get;
Dividing both side by 5 we get;
Hence The maximum cost of each book will be $14 that Larry can buy.
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An experiment requires that each student use an 8.5 cm length of magnesium ribbon. How many students can do the experiment if there is a 570 cm length of magnesium ribbon available?
Answers
multiply out
[8a+24+26]/5=18
add
(8a+50)/5=18
bultiply both sides by 5
8a+50=90
subtract 50 from both sides
8a=40
divide both sides by 8
a=5
Answers
He stayed 3 nights, so $115.62 × 3 = $346.86
Airfare
$45.70 + $32.49 = $78.19
Food
He averaged $15 a day, and he stayed 4 days.
$15 × 4 = $60
Winnings
He won $75 but lost $25
$75 - $25 = $50 won.
Adding up all the expenses and winnings, we find that he paid $435.05 for his trip.
x = 8
x = 10
x = 11
Answers
The solution to the given algebraic expression (x - 2)(x + 10) = 13 is x = 3
What is an algebraic equation?
An algebraic equation is the combination of variables and their coefficients(usually numbers) with arithmetic operations. The main purpose of an algebraic expression is to determine the value(s) of the variable(s).
From the given information:
(x - 2)(x + 10) = 13
x² + 10x - 2x - 20 = 13
x² + 8x -20 -13
x² + 8x - 33 = 0 (quadratic equation)
Using the quadratic formula, the values of x are - 11 and 3. Since we are considering only the positive integer only, x = 3
Learn more about algebraic equations here:
#SPJ5
Answer: X=3
Step-by-step explanation:
1. expand the equation
x^2 + 10x -2x -20 = 13
2. Collect like terms
x^2 + 8x - 20 = 13
3. Simplify
x^2 + 8x = 13 + 20
x^2 + 8x = 33
x^2 = 33 - 8x
4. Substitute answers for guess and check
3^2 = 33 - (8 x 3)
9 = 33 - 24
This equation is correct therefore x = 3
Answers
Remember that:
Answers
I think it is :.
But...not really sure
y^2+4x-6x-6y+5=0
y^2-6y-2x+5=0
so I suspect that you might have left out a x^2 but I'll try to solve it how it is
y^2-6y+5-2x=0
factor y^2-6y+5
what adds up to -6 and multiplies to get 5, -1 and -5
(y-5)(y-1)-2x=0
not sure how to procede but you could get it to this
(y-5)(y-1)=2x
Answers
Answer:
B. 49:9
Step-by-step explanation:
The ratio of surface areas is the square of the ratio of edge lengths:
7² : 3² = 49 : 9