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OlgaM077 [116]
3 years ago
9

Work out size of angle x

Mathematics
2 answers:
Blizzard [7]3 years ago
8 0
First, you calculate the inner corners of the triangle. These two are 115 -> 65 and 304 -> 56, because a straight line is 180 degrees and a circle is 360 degrees. Then you can calculate the third corner: 59 degrees. Then, since a staight line is 180 degrees, you can calculate the answer. 180-59= 121

Answer: 121 degrees
PtichkaEL [24]3 years ago
7 0

Answer:

e

Step-by-step explanation:

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The area of the following equilateral triangle is 62.4 square feet that is he height
Vikentia [17]

The height of this triangle would be 10.4

In order to find this, you first must find the length of the sides. Using a manipulated formula for area of an equilateral triangle, we can determine the lengths of the side. Below if the formula.

S = \frac{2}{3}3^{\frac{3}{4}} \sqrt{A}

In this, S is the length of the side and A is the area. So we plug in and get:

S = \frac{2}{3}3^{\frac{3}{4}} \sqrt{62.4}

S = \frac{2}{3}3^{\frac{3}{4}} 7.89

S = 12

Now that we have the side as 12, we can use the Pythagorean Theorem to find the height. If you split a equilateral triangle down the middle, you are left with two right triangles. Using this right triangle, the hypotenuse would be 12, the first leg would be 6 (half of the base) and the height would be the other leg. So we plug in and solve.

a^{2} + b^{2} = c^{2}

6^{2} + h^{2} = 12^{2}

36 + h^{2} = 144

h^{2} = 108

h = 10.4

5 0
3 years ago
Determine the domain with symbols, will give brainlist
navik [9.2K]

Answer:

-3 > x > 7

Step-by-step explanation:

Since the domain is the x, there are open circles, and it ends, then x could equal -3 > x > 7

5 0
3 years ago
Read 2 more answers
Solve the equation a/a^2-9 +3/a-3=1/a+3
MAXImum [283]
Answer is: a= -4
STEP
1
:

1
Simplify —————
a + 3
Equation at the end of step
1
:

a 3 1
(————————+—————)-——— = 0
((a2)-9) (a-3) a+3
STEP
2
:

3
Simplify —————
a - 3
Equation at the end of step
2
:

a 3 1
(————————+———)-——— = 0
((a2)-9) a-3 a+3
STEP
3
:

a
Simplify ——————
a2 - 9
Equation at the end of step
3
:

a 3 1
(————————————————— + —————) - ————— = 0
(a + 3) • (a - 3) a - 3 a + 3

Equation at the end of step
4
:

(4a + 9) 1
————————————————— - ————— = 0
(a + 3) • (a - 3) a + 3
Pull out like factors :

3a + 12 = 3 • (a + 4)

Equation at the end of step
6
:

3 • (a + 4)
————————————————— = 0
(a + 3) • (a - 3)

3•(a+4)
——————————— • (a+3)•(a-3) = 0 • (a+3)•(a-3)
(a+3)•(a-3)

a+4 = 0

Subtract 4 from both sides of the equation :
a = -4
7 0
3 years ago
6th grade math i mark as brainliest
Natasha_Volkova [10]

Answer:

16

Step-by-step explanation:

8 0
3 years ago
What is the measure of angle DBA?
const2013 [10]

Answer:

DBA =110 degree

Step-by-step explanation:

angle DBA is central angle

central angle = arc angle = 110 degree

8 0
2 years ago
Read 2 more answers
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