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e-lub [12.9K]
3 years ago
12

HELP ME WITH THIS!!!!!!!!!

Mathematics
1 answer:
valentina_108 [34]3 years ago
8 0

Answer:

A ≈ 78.6 ft²  

Step-by-step explanation:

Height of an equilateral triangle of side 6

h = √(6² - 3²) = √27

A = 3(½(6)(7)) + (½(6)(√27))

A = 63 + 15.6

A ≈ 78.6 ft²  

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1. What is the value of x? Show all of your work.
asambeis [7]
AB^2 + BC^2 = AC^2
AB^2 + 6^2 = square root 117^2
AB^2 + 36 = 117

Now subtract 117 from both sides
AB^2 = 81
AB = square root 81 = 9
\sqrt{81}  = 9
Therefore AB is 9 cms.
3 0
3 years ago
. The temperature fell 13°c on each of the first 2 days of the week. It rose 7°c on each of
Rina8888 [55]

Answer:

The final temperature was 9 degrees.

Step-by-step explanation:

You can first multiply 13x2, 7x2, and 9x2. Then you subtract 26 and 18 from 34. then add 14

4 0
3 years ago
Jake draws a drinking glass with a scale of 2 units on his graph paper represents 2.5 cm. The glass is 8 units tall in the drawi
alexandr1967 [171]

Answer:

Ratio 2= 2.5

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10cm

Step-by-step explanation:

Ratios and multiply each side by 4 to get the ratio 2:2.5 to 8:10

5 0
4 years ago
The midpoint of AB is M (0, -3). If the coordinates of AA are (2, 1) what are the coordinates of BB?
frez [133]

Answer:

B(-2, -7)

Step-by-step explanation:

Midpoint is (0, -3)

A(x₁, y₁) B(x₂, y₂)

A(2, 1)

Midpoint = (\frac{x_{1} + x_{2} }{2}, \frac{y_{1} + y_{2} }{2} )\\\\Midpoint = (\frac{2+ x_{2} }{2}, \frac{1 + y_{2} }{2} )

(0, -3) = (\frac{2+ x_{2} }{2}, \frac{1 + y_{2} }{2} )

              \frac{2+ x_{2} }{2} = 0\\\\2 + x_{2} = 0\ \ \ \ times\ both\ sides\ by\ 2\\x_{2} = -2\ \ \ \ subtract\ both\ sides\ by\ 2

              \frac{1 + y_{2} }{2} = -3\\\\1 + y_{2} = -6\ \ \ \ times\ both\ sides\ by\ 2\\y_{2} = -7\ \ \ \ subtract\ both\ sides\ by\ 1

∴ B(-2, -7)

6 0
3 years ago
Find the range of 83,70,21,48 and 116
jeka94

Answer:

The range is 95

Step-by-step explanation:

The range of a discrete data set is the difference between the least and the highest value.

The given date set is 83,70,21,48 and 116.

We sort it to get:

21,48,70,83,116

The range is 116-21=95

3 0
3 years ago
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