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3 years ago

a jet travels 400 miles in 5 hours at this rate how far could the jet fly in 14 hours what is the rate of speed of the jet

Mathematics

2 answers:

k0ka [10]3 years ago

4 0

I got 1,120 !!!!!!!!!

Deffense [45]3 years ago

4 0

To find the miles traveled in an hour, divide 400 by 5. 400/5=80 Miles per hour. Now, multiply 14 by 80 to get the miles traveled in 14 hours. 14 x 80=1120 miles. I hope this helps!

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The height of the rectangle and the triangle are the same. The base of the triangle is half the base of the rectangle.

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2 years ago

The length of a rectangle is the width minus 8 units. The area of the rectangle is 9 units. What is the length, in units, of the

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<u>Solution: </u>

Given that

Length of a rectangle is width minus 8 units.

Area of rectangle = 9 square units

Need to calculate the length of rectangle.

Let us assume width of rectangle = x

As Length is width minus 8,

Length of the rectangle = x – 8

$\text{ Area of rectangle }=\text{ width of rectangle }\times \text{ Length of the rectangle }$

$\text{ Area of rectangle }= x\times (x-8)$

$\text { Area of rectangle }=\left(x^{2}-8 x\right)$

As given that area of rectangle = 9 square units

$\begin{array}{l}{\Rightarrow x^{2}-8 x=9} \\\\ {\Rightarrow x^{2}-8 x-9=0}\end{array}$

On solving above quadratic equation for x, we get

$\begin{array}{l}{\Rightarrow x^{2}-9 x+x-9=0} \\\\ {\Rightarrow x(x-9)+1(x-9)=0} \\\\ {\Rightarrow (x-9)(x+1)=0}\end{array}$

When $x-9 =9, x = 9$

When $x + 1 = 0, x = -1$

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3 years ago

The side length of an equilateral triangle is 5 cm.<br><br> Find its perimeter

ollegr [7]

Answer: 15 cm

Step-by-Step Explanation:

Side Length (a) = 5cm
Perimeter = 3a

Therefore,
= 3a
= 3 * 5
= 15

Perimeter = 15 cm

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2 years ago

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