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Shalnov [3]
4 years ago
11

(Picture Included) 20 points - can someone solve 11, 12, 13, and 15?

Mathematics
1 answer:
slavikrds [6]4 years ago
6 0

11. 3(5) + 2(4)

15 + 8 = 13


12.  x= -12

13. -30

15. x = 44


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Find the measure of angle X in the triangle below.
daser333 [38]
Use the Law of Sines to solve.

24/Sin 67.38 = 26/Sin X
Cross multiply
26Sin 67.38 = 24SinX
Divide both sides by 24
(26Sin67.38)/24 = Sin X
Use Sin^-1 to find the angle measure.
Sin^-1 [(26Sin67.38)/24]
x = 89.92 degrees

5 0
3 years ago
Help I was never taught how to do this im confused
vazorg [7]

Answer:

36

Step-by-step explanation:

Area of a triangle = (bh)/2

Where b = base length and h = height

Given base length: 18ft

Given height: 4ft

This being known let's define the variables

b = 18

h = 4

Now to find the area we simply plug in these values into the formula

Area = (18)(4)/2

Simplify multiplication 18 * 4 = 72

Area = 72/2

Simplify division

Area = 36

5 0
3 years ago
Brainliest if correct
Ira Lisetskai [31]

the answer does be A

7 0
2 years ago
Read 2 more answers
To the nearest tenth, find the perimeter of ABC with vertices A(-1,4), B(-2,1) and C(2,1). show your work
liubo4ka [24]

we have to firstly apply the distance formula to find the length of sides of the triangle

distance formula = \sqrt{(x_{2} -x_{1})^2 +(y_{2}- y_{1})^2}

So length AB = \sqrt{(-2-(-1))^2+(1-4)^2}= \sqrt{1 +9}=\sqrt{10}

BC= \sqrt{(2-(-2))^2+(1-1)^2}= \sqrt{16+0}=4

AC = \sqrt{(2-(-1))^2+ (1-4)^2}= \sqrt{9+9}=\sqrt{18}=3\sqrt{2}

Now perimeter = AB+BC+AC = \sqrt{10}+4+3\sqrt{2}

Plug in calculator

perimeter= 11.4 units

7 0
3 years ago
4,756 rounded to the nearest thousand is
Shalnov [3]

4,756 rounded to the nearest thousand is 5,000.

8 0
3 years ago
Read 2 more answers
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