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vredina [299]
3 years ago
7

Evaluate the expression. 2.15(3)2=

Mathematics
2 answers:
ser-zykov [4K]3 years ago
4 0

Answer:

12.9

Step-by-step explanation:

Elina [12.6K]3 years ago
3 0

Answer:

12.9

Step-by-step explanation:

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Solve for x in the diagram below
ella [17]

Answer:

20

Step-by-step explanation:

3x + x + 100 = 180 (sum of angles on a straight line)

4x = 180-100

4x=80

divide both sides by 4

x=20

8 0
3 years ago
The base of a regular pyramid is a hexagon. The figure shows a regular hexagon with center C. An apothem is shown as a dashed se
tatuchka [14]
Answer: 294√3

Explanation:


1) The described hexagon has these featrues:
a) 6 congruent equilateral triangles whose side lengths measure 14
b) height of each triangle = apotema = a
c) the area of each triangle is base × a / 2 = 14 × a / 2 = 7a


2) a is one leg of a right triangle whose other leg is 14 / 2 = 7, and the hypotenuse is 14.

3) Then you can use Pythagorean theorem fo find a:

14² = 7² + a² ⇒ a² = 14² - 7² = 147 ⇒ a = √ 147 = 7√3

4) Therefore, the area of one triangle is: 14 × 7√3  / 2 = 49√3

5) And the area of the hexagon is 6 times that: 6 × 49√3 = 294√3
8 0
2 years ago
Bill went to the movies with some of his friends. tickets cost $8.50 each . they spent $18.00 total for food . their total was $
Marina86 [1]
18.00 + 8.50 + 8.50 + 8.50 + 8.50 = 52.00

So that's 4 Friends
4 0
3 years ago
If x varies directly with y and x = 2.5 when y = 10, funny x when y = 16.
amid [387]

Answer:

Should be 4.0(Not sure tho. my thought process is complicated but to me it makes sense)

Step-by-step explanation:

If y=10 and x =2.5, if y were to = 20, then x would equal 5. so you take that ratio, and say 6 is 3/5's the way to 10, so you also divide 2.5 by 3/5

you get 1.5, you add that to x already and you get 4.0

so if y=16, x should =4.0

3 0
3 years ago
Complete the following statement. Write your answer as a decimal or whole number.<br> % of $68 = $34
Paraphin [41]
34% of $68 dollars would equal $34
7 0
2 years ago
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