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Andre45 [30]
3 years ago
15

4. A map has a scale of 1 inch = 100 miles. The distance between two cities is 7.25 inches. If a car travels

Mathematics
1 answer:
motikmotik3 years ago
4 0

Answer:

14.5 hours/14 hours 30 minutes

Step-by-step explanation:

  • The distance between the two cities is 7.25•100=725 because you multiply the scale distance by the scale.
  • The number hours is 725/50=14.5 hours because you divide the distance by 50 (the miles per hour).
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Your French fries have a food cost of $0.50, and you want to have a margin of 75% on the fries. What will the final selling pric
AleksandrR [38]

Answer:

\frac{0.5}{100} = \frac{x}{175}

0.5 represent the original 100% but we want to obtain a 75% aditional so we can find for the value x if interest and we got:

x= 175 *\frac{0.5}{100} =0.875

So we need to sell the fries ar 0.875$ if we want to obtain a 75% of margin

Step-by-step explanation:

For this case we know that the french fries cost $0.50 and we want to have a margin of 75% on the fries. So we can use the following proportional rule:

\frac{0.5}{100} = \frac{x}{175}

0.5 represent the original 100% but we want to obtain a 75% aditional so we can find for the value x if interest and we got:

x= 175 *\frac{0.5}{100} =0.875

So we need to sell the fries ar 0.875$ if we want to obtain a 75% of margin

4 0
3 years ago
Read 2 more answers
Evaluate the integral. <br><br> ∫ 17/ (x^3 − 27) dx
AVprozaik [17]

Answer:

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5 0
3 years ago
Which of the following represents the zeros of f(x) = 2x3 − 5x2 − 28x + 15?
likoan [24]

\mathrm{Use\:the\:rational\:root\:theorem}

a_0=15,\:\quad a_n=2

\mathrm{The\:dividers\:of\:}a_0:\quad 1,\:3,\:5,\:15,\:\quad \mathrm{The\:dividers\:of\:}a_n:\quad 1,\:2

\mathrm{Therefore,\:check\:the\:following\:rational\:numbers:\quad }\pm \frac{1,\:3,\:5,\:15}{1,\:2}

-\frac{3}{1}\mathrm{\:is\:a\:root\:of\:the\:expression,\:so\:factor\:out\:}x+3

-\frac{3}{1}\mathrm{\:is\:a\:root\:of\:the\:expression,\:so\:factor\:out\:}x+3

\mathrm{Compute\:}\frac{2x^3-5x^2-28x+15}{x+3}\mathrm{\:to\:get\:the\:rest\:of\:the\:eqution:\quad }2x^2-11x+5

=\left(x+3\right)\left(2x^2-11x+5\right)

Factor: 2x^2-11x+5

2x^2-11x+5=\left(2x^2-x\right)+\left(-10x+5\right)

=x\left(2x-1\right)-5\left(2x-1\right)

2x^3-5x^2-28x+15=\left(x+3\right)\left(x-5\right)\left(2x-1\right)

\left(x+3\right)\left(x-5\right)\left(2x-1\right)=0

\mathrm{Using\:the\:Zero\:Factor\:Principle:}

thus zeros of f(x) is

x=-3,\:x=5,\:x=\frac{1}{2}

5 0
3 years ago
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3x +15 = 2x + 10 + x + 5
Shkiper50 [21]

Answer:

The equation is true.

Step-by-step explanation:

Simplify. Combine like terms:

3x + 15 = (2x + x) + (10 + 5)

3x + 15 = (3x) + 15

Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Subtract 3x and 15 from both sides:

3x (-3x) + 15 (-15) = 3x (-3x) + 15 (-15)

3x - 3x = 15 - 15

0 = 0

~ True. The two expressions are equal to each other.

~

4 0
3 years ago
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What is the perimeter of a square whose diagonal is 10 centimeters? Round to the nearest tenth, if necessary.
Alinara [238K]

Answer:

D

Step-by-step explanation:

I hope this correct and have a great day

6 0
3 years ago
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