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3 years ago

A car traveled 130 miles in 2 hours. How fast did the car travel?

Mathematics

2 answers:

kifflom [539]3 years ago

7 0

You will have to divide which would be....(hold on calculating)65!
There you go your welcome

Schach [20]3 years ago

5 0

it traveled 65 miles per hour.

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A spider ate 2 5 % 25%25, percent more bugs this month than last month. The spider ate 8 88 bugs last month.

ankoles [38]

25% of 88 =

0.25 × 88 = 22

88 + 22 = 110

Answer = 110

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3 years ago

Which weights more 2.48 or 2.5

Mazyrski [523]

2.5 weighs more. It’s a greater number than 2.48

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2 years ago

What is the coordinate of the midpoint of segment AC

Aloiza [94]

Answer:

-5.5

Step-by-step explanation:

$\frac{-7+-4}{2}\\\\\frac{-11}{2}\\\\-5.5$

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3 years ago

What is the area, height, and base of this triangle?

Minchanka [31]

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2 years ago

The surface area of a given cone is 1,885.7143 square inches. What is the slang height?

kap26 [50]

Answer:

If $r >> h$ , the slang height of the cone is approximately 23.521 inches.

Step-by-step explanation:

The surface area of a cone (A) is given by this formula:

$A = \pi \cdot r^{2} + 2\pi\cdot s$

Where:

$r$ - Base radius of the cone, measured in inches.

$s$ - Slant height, measured in inches.

In addition, the slant height is calculated by means of the Pythagorean Theorem:

$s = \sqrt{r^{2}+h^{2}}$

Where $h$ is the altitude of the cone, measured in inches. If $r >> h$ , then:

$s \approx r$

And:

$A = \pi\cdot r^{2} +2\pi\cdot r$

Given that $A = 1885.7143\,in^{2}$ , the following second-order polynomial is obtained:

$\pi \cdot r^{2} + 2\pi \cdot r -1885.7143\,in^{2} = 0$

Roots can be found by the Quadratic Formula:

$r_{1,2} = \frac{-2\pi \pm \sqrt{4\pi^{2}-4\pi\cdot (-1885.7143)}}{2\pi}$

$r_{1,2} \approx -1\,in \pm 24.521\,in$

$r_{1} \approx 23.521\,in \,\wedge\,r_{2}\approx -25.521\,in$

As radius is a positive unit, the first root is the only solution that is physically reasonable. Hence, the slang height of the cone is approximately 23.521 inches.

3 0

3 years ago