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cricket20 [7]
3 years ago
14

HELP I REALLY NEED HELP PLEASE :0 thanks

Mathematics
2 answers:
spayn [35]3 years ago
8 0
The area of the triangle is 52.5 ft squared.
mr Goodwill [35]3 years ago
6 0

Answer:

52.5 ft.

Step-by-step explanation:

To find the area of a triangle you find the hight and length and multiply them which in this case would be 84. Then, you divide it by two because a triangle is half of a square which would equal 42. Lastly, you do the same with the left side of the triangle which would equal 10.5. then, you add 42 and 10.5 together and your answer is 52.5.

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Factor Completely : 3x^3 -12x
Thepotemich [5.8K]
The answer you're looking for will be,
ANSWER:    3x(x + 2)(x - 2)

You're welcome.

STEPS:
#1.
Factor out common term 3x.
7 0
3 years ago
Eight sided dice can be described as two square based pyramids stuck together at
kobusy [5.1K]
It costs $3.63 more for the gold die than the gold plated die.

The volume of each half of the die is given by the formula

V=1/3s³.

This means the total volume is V = 2(1/3s³) = 2(1/3(2³)) = 16/3 = 5.33 mm³.

For the solid gold die, we know that it weighs 0.02g per mm³:

5.33(0.02) = 0.1066g

Gold costs $40.38 per gram:
40.38(0.1066) = $4.30

For the plastic die, plastic weighs 0.01 g per mm³:
0.01(5.33) = 0.0533g

Plastic costs $10 per gram:
0.0533(10) = 0.533 ≈ $0.54.

We also need to find the surface area, as it will be painted.  Each face is an equilateral triangle; the area of a triangle is given by the formula

A = 1/2bh

We need to use the Pythagorean theorem to find the height.  The height will be one leg and 1/2 of the base will be the other; the slanted side will be the hypotenuse:

h² + (1/2(2))² = 2²
h² + 1² = 2²
h² + 1 = 4
h² = 3
h = √3

The area of the triangle would then be A = 1/2bh = 1/2(2)(√3) = √3.  There are 8 such faces on the die, so the total surface area would be 8√3 = 13.86mm².

Paint costs $0.01 per mm²:
13.86(0.01) = 0.1386 ≈ $0.14

Together the cost for the plastic is 0.14+0.53 = $0.67.

The difference between it and the cost for the gold die is 4.30 - 0.67 = $3.63.
5 0
3 years ago
Which expression is equivalent to 16a - 18b + 20a
vaieri [72.5K]
(16a+20a)-18b
=36a-18b
8 0
3 years ago
Please help me with this!!
Sergeu [11.5K]

Answer:

yea

Step-by-step explanation:

3 0
3 years ago
If y is directly proportional to x, and y = 5 when x = 2, what is the value of y when x = 6?
Korolek [52]

it could be 2.2 because every 5 you get 2 so it would be 10 and 4 so when y=6 then x should be 2.2.

3 0
3 years ago
Read 2 more answers
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