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2 years ago

Find the perimeter. (attachment included)

Mathematics

1 answer:

Tresset [83]2 years ago

6 0

Answer:

5 + 2 $\sqrt{11}$

Step-by-step explanation:

5 + $\sqrt{11}$ - $\sqrt{5}$ + $\sqrt{11}$ + $\sqrt{5}$

5 + 2 $\sqrt{11}$ - $\sqrt{5}$ + $\sqrt{5}$

5 + 2 $\sqrt{11}$

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Soit trois nombres consécutifs. Lorsque l’on soustrait le double du deuxième nombre du quadruple du

irina [24]

Answer:

Les trois nombres sont 5, 6 et 7.

Step-by-step explanation:

Soit x le premier nombre.

x + 1 sera le second et x + 2 sera le troisième.

On pose l'équation :

2x + 3(x + 1) = 4(x + 2)

2x + 3x + 3 = 4x + 8

5x - 4x = 8 - 3

x = 5

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2 years ago

What is 10.9091% to 2 decimal places

Tom [10]

Answer:

10.91%

Step-by-step explanation:

Take your number: 10.9091

Now find the first 3 decimals: 10.909

If the last (3rd) decimal is 5 or more raise the 2nd decimal: 10.909 → 10.91

That is 2 decimal places

(if your teacher doesn't want it rounded then just 10.90%)

4 0

2 years ago

Read 2 more answers

18. A triangle has side lengths of 6, 8, and 9. What type of triangle is it?

NikAS [45]

Answer:

obtuse

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3 0

2 years ago

A plane averaged 800 mph on a trip going east, but only 400 mph on the return trip. The total flying time in both directions wa

galina1969 [7]

Answer:

1200 miles.

Step-by-step explanation:

Let d represent one way distance.

We have been given that a plane averaged 800 mph on a trip going east, but only 400 mph on the return trip.

$\text{Time}=\frac{\text{Distance}}{\text{Speed}}$

The time taken while going east would be $\frac{d}{800}$ .

The time taken while returning back would be $\frac{d}{400}$ .

Since the total flying time in both directions was 4.5 hr, so we will equate sum of both times with 4.5 as:

$\frac{d}{800}+\frac{d}{400}=4.5$

Make a common denominator:

$\frac{d}{800}+\frac{d*2}{400*2}=4.5$

$\frac{d}{800}+\frac{2d}{800}=4.5$

$\frac{d+2d}{800}=4.5$

$\frac{3d}{800}=4.5$

$\frac{3d}{800}\times \frac{800}{3}=4.5\times \frac{800}{3}$

$d=1.5\times \frac{800}{1}$

$d=1200$

Therefore, the one-way distance was 1200 miles.

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2 years ago

Jeb took 1 hour 40 minutes to complete a road race that was three laps around a section of the city. He took 1/4 of the total ti

e-lub [12.9K]

Jeb took 1/4 of 100 minutes(1 hour 40 minutes) =25 minutes for the first lap. . so the rest 75 minutes , Jeb took 1/3 time so 25 minutes for the second lap , the third lap Jeb took 100-50 = 50 minutes .

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3 years ago