Need help plz ASAP! It’s due tomorrow! I will give branist
Answers
Study the Problem
What is the cost of the wallpaper (in dollars per square foot)?
Organize the Facts
The wallpaper covers a rectangle 42 ft by 25.5 ft. It costs $771.12 for that area.
Make a Plan
To find dollars per square foot, we need to divide the dollar amount by the area in square feet. The area needs to be computed. It is the area of a rectangle, so can be found by multiplying length and width.
Plan: multiply length and width of the wall to find its area; divide the cost by that area to find dollars per square foot.
Execute the Plan
area = (42 ft)×(25.5 ft) = 1071 ft²
cost/area = $771.12/(1071 ft²) = $0.72/ft²
Examine the Results
The area is on the order of 40×25 = 1000 ft², and the cost is less than $1000, so the cost will be less than $1 per square foot. The answer is in the right ballpark. If we multiply it out, we should get the given cost:
... 0.72×42×25.5 = 771.12 . . . . agrees with given cost.
The cost of the wallpaper is $0.72 per square foot.
Related Questions
A right triangle has side length 9,40, and 41 as shown below. Use these lengths t find cos Y, and tan Y, and sin Y.
Factors of 64......plzz help
Evaluate. 90 • 4 – 14 ÷ 2 + 10² ÷ 5 • 2
An 8 inch pizza is cut into 4 equal slices. A 10 inch pizza is cut into 6 equal slices.Which slices are larger?
What is the minimum height of the driftwood in the storm? __________ ft.
What is the distance between the maximum and minimum heights of the driftwood during the storm? ______________ ft.
Answers
What is the minimum height of the driftwood in the storm? -6ft.
What is the distance between the maximum and minimum heights of the driftwood during the storm? 8ft-(-6ft)=14 ft.
Answers
x/2 + x + x/3 = 8
Simplify both sides of the equation
x/2 + x +x/3 = 8
Simplify
11/6 x = 8
Multiply both sides by 6/11
(6/11)*(11/6 x ) = (6/11)*(8)
x = 48 / 11
decimal will be x = 4.36
-7(x-1)-3(x-4)
Distribute
(-7)(x)+(-7)(-1)+(-3)(x)+(-3)(-4)
= -7x+7+ -3x +12
Combine like terms
-7x+7+ -3x+12
= (-7x+ -3x ) + ( 7+12)
= -10x + 19
3(x-2)^2 -5(x-2)+3
Distribute
= 3x^2 + -12x+12+(-5)(x)+(-5)(-2)+3
= 3x^2 +-12x+12+ -5x +10 +3
Combine like terms
3x^2 + -12x+12+ - 5x+10 +3
(3x^2) + (-12x+ -5x ) + (12+10+3)
= 3x^2 + -17x + 25
= 3x^2 -17x+25
I hope that's help ! Please if you have question about all 3 just let me know .
Answers
Final answer:
Elke spent 33 minutes on weights, which is 1/5 hour less than the time she spent on exercise bikes.
Explanation:
The question is about calculating the time Elke spent on weights at her health club. She spent 3/4 hour on exercise bikes and 1/5 hour less than that on the weights.
- Firstly, convert 3/4 hours to minutes. One hour is 60 minutes, so 3/4 of an hour equals 45 minutes (i.e., 60 * 3/4).
- Next, to find how much time was spent on weights, which is 1/5 hour less than the time spent on exercise bikes, you need to convert 1/5 hours to minutes. 1/5 hour is 12 minutes (60 * 1/5).
- Subtract this from the time spent on the bikes to find the time spent on weights. Hence, 45 minutes (bike time) - 12 minutes equals 33 minutes (weights time).
So, Elke spent 33 minutes on weights.
Learn more about Time calculation here:
#SPJ12
Answers
This has a lot of scary words and numbers in it, but it's all just fluff.
That big ugly formula is nothing but numbers, except for the 'h' in it
near the end. When you write your altitude in place of 'h' and push
all the numbers through your calculator, the answer is the air pressure
at that altitude.
All it's asking you to do is this:
-- Write ' 100 ' into the big formula.
-- Run all the numbers through the calculator and get the pressure at 100 meters.
-- Then write ' 1000 ' into the formula.
-- Run the whole thing through the calculator again, and see what
the pressure is at 1,000 meters.
-- Subtract, and see how much the pressure changed between 100 meters
and 1,000 meters.
You want to know what I think the whole idea is here ? I think the whole idea
is to get you to decide which things to do first as you calculate the formula,
AND to give you practice in using your calculator to do weird stuff.
In the formula, I see a power, a set of parentheses, two multiplications, and
one subtraction. You have to decide what order to do them in. And THEN,
you have to figure out how to do them all with your calculator.
Here's the order:
-- Inside the parentheses, multiply 2.25577x 10⁻⁵ by 'h' .
-- Inside the parentheses, subtract the result from ' 1 '.
-- Take the number inside the parentheses, and raise it to the 5.25588 power.
-- Then multiply the result by 101,325 .
For 100 meters altitude, the pressure you should get is 100,129 pascals.
Make sure you can get that with your calculator when you put '100' in place
of 'h'. And then, when THAT works, do it with 1,000 in place of 'h'.
The number you get for 1,000 meters should be about 10,254 pascals less.
Answers
Answers
Smaller canvas:
Length (
Width (
Larger canvas:
Length (
Width (
Since these are similar rectangles, we can cross-multiply to calculate the missing length. Here's that formula:
So let's plug it all in from above:
Now we cross multiply by multiplying the top-left by the bottom-right and vice versa:
Now divide each side by 5 to isolate
The 5s on the right cancel out, leaving us with:
So the length of the larger canvas is 6 ft
It's not as complicated as you think. The smaller rectangle is 3ft with a width of 5ft. It's asking what the length of the larger canvas is if the width is 10ft. So you pretty much just do 10/5 which is 2 then you multiply 3ft by 2 and you get 6ft.
If you need any help just ask :)
-John