3 years ago

A triangle is 10 ft tall and 18 ft wide what is the area of the triangle

Mathematics

2 answers:

erica [24]3 years ago

5 0

The answer is 90 feet

nika2105 [10]3 years ago

4 0

Wouldn't the area be 90

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Cos90degrees cos30 degrees + sec-squared45degrees sin30degrees - cos270degrees sin180degrees

yawa3891 [41]

Step-by-step explanation:

$\cos 90 \cos 30 + \sec^2 45 \sin 30 - \cos 270 \sin 180$

But we know that

$\cos 90 = \cos 270 = \sin 180 = 0$

and

$\sin 30 = \dfrac{\sqrt{3}}{2} \:\:\text{and}\:\: \sec 45 = \sqrt{2}$

so this leaves us with just

$\sec^2 45 \sin 30 = (\sqrt{2})^2 \left(\dfrac{\sqrt{3}}{2} \right)= \sqrt{3}$

6 0

2 years ago

The density of a fish tank is 0.3fish over feet cubed. There are 15 fish in the tank. What is the volume of the tank?

Sedbober [7]

15 fish* (1 ft^3/ 0.3 fish)= 50 ft^3.
(Note that the unit cancels out so you get the answer)

The volume of the tank is 50 ft^3~

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3 years ago

Birth control pills have a theoretical annual efficacy of 99.5%, but a real-worls efficacy of only 95%. If a college student tak

shutvik [7]

Answer:In my opinion B.0.005 is the correct answer

Step-by-step explanation:

hope it will help you

3 0

2 years ago

Find the geometric mean between 12 and 20 find the answer in radical form or round to the nearest tenth if necessary

alex41 [277]

Geometric mean of two numbers is squre root of thir product.

Given numbers are 12,20

Geometric mean = √(12*20)

= √240

= 15.49

= 15.5

Mark as brainlist

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3 years ago

There were 28 hats, 12 bicycles, and 19 teddy bears sold during a neighborhood yard sale. How many items were sold at the neighb

jasenka [17]

Answer: I believe the answer is 59 Items

Step-by-step explanation: 28 + 19= 47

47+12= 59

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2 years ago