<h3>
Answers:</h3><h3>
Total Area = 342.5 square meters</h3><h3>
Total Cost = 138 pounds</h3>
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Work Shown:
Break the figure up as shown by the dashed lines. Think of cutting along those lines to form 3 separate figures. The trapezoid on the left has area
A = h*(b1+b2)/2
A = 5*(11+12)/2
A = 57.5
The rectangle in the middle has area
A = L*W
A = 12*15
A = 180
The trapezoid on the right has area
A = h*(b1+b2)/2
A = 10*(12+9)/2
A = 105
Overall, the entire figure has area of 57.5+180+105 = <u>342.5 square meters</u>
1 can costs £6 and it covers 15 square meters. We need to cover 342.5 square meters
342.5/15 = 22.8333333333333 approximately
Round up to the nearest whole number to get 23
We need 23 cans to be able to paint 342.5 square meters or more
Note that 22 cans won't be enough because 22*15 = 330 is short of 342.5
While 23 cans is more than enough since 23*15 = 345. It's better to have leftovers than come up short.
Since each can costs £6 and we need 23 of them, the total cost would then come to 6*23 = <u>138 pounds</u>
Use quadratic formula to solve (shown in picture):
We would get two answers:
x = .3808
and
x = -18.381
Answer:
85-4x<40
Mr. Schwartz will need to order more wheels after building 12 cars.
Step-by-step explanation:
Answer:
80 centimeters
Step-by-step explanation:
To do this, we have to solve the equation 3 times for 3 different values for f(x).
Those three numbers are -2, 2, and 4, the numbers in the range.
First solve for -2.
-2 = -2x + 6
Subtract 6 from each side:
-8 = -2x
Divide by -2 on each side:
4 = x That's one value done.
Next, solve with 2.
2 = -2x + 6
Subtract 6 from both sides.
-4 = -2x
Divide each side by -2.
2 = x Second value solved for.
Last value: 4.
4 = -2x + 6
Subtract 6 from each side.
-2 = -2x
Divide each side by -2.
1 = x. Now just put the domain together.
Domain is this:
{4, 2, 1}.
Hope this helps!
