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marshall27 [118]
3 years ago
11

Samuel bought 32 and 1/2 ft of window trim at a hardware store the trim cost $1.75 per foot including sales tax if Samuel paid w

ith a $100 bill how much change should he have received
Mathematics
1 answer:
Sergio [31]3 years ago
8 0

Answer:

The amount of change he should received is

$100 - $56.875

= $43.125

= $43.13

Step-by-step explanation:

Length of window trim = 32 and 1/2 ft

Cost per foot = $1.75

Amount paid = $100

Total cost of window trim = 32.5×1.75 = $56.875

The amount of change he should received is

$100 - $56.875

= $43.125

= $43.13

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ANTONII [103]

Answer:

B. 3/4

Step-by-step explanation:

I just did it and got it right

3 0
2 years ago
The ratio of the measures of the three angle in a triangle is 15:8:13. Find the measure of the three angles.
Angelina_Jolie [31]

Answer:

a=15x; b=8x; c=13x

180°=a+b+c=15x+8x+13x=36x

=> x=180÷36=5

=> a=15×5=75°; b=8×5=40°; c=13×5=65°

6 0
3 years ago
A point p in the first quadrant lies on the parabola y=x^2. Express the coordinates of p as a function of the angle of inclinati
max2010maxim [7]

Answer:

  • The coordinates of the point p are:       (x,xtan\alpha )

                   

           

Explanation:

1. Name the angle of inclination of the line joining p to the origin α.

2. Find the relation between the coordinates of the point (x,y)

When you draw a line from the origin to the parabola, the intersection point, p(x,y) will have coordinates (x,y).

As per the definition of the tangent trigonometric ratio you have:

  • tan\alpha =\frac{y}{x}

From which you can clear y:

  • y=xtan\alpha =>(x,y)=(x,xtan\alpha )

Which is the expression of the coordinates of p as a function of the angle of inclination of the line joining p to the origin.

8 0
3 years ago
A sample of 100 receipts from a restaurant showed that 12 had errors. What is the 95% confidence interval for the proportion of
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Answer:

0.03919

Step-by-step explanation:

You take 1.984+1.96=3.944

3.944-0.025=3.919

3.919 into the percentage =0.03919

7 0
3 years ago
A study of a population of 1,080 frogs revealed that 15 out of every 180 frogs in the population have spots on their back. Based
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I think it’s 990 maybe not I did 1080/180=6 then 15*6=90 then did 1080-90=990 I think
8 0
3 years ago
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