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Alex73 [517]
3 years ago
13

Math question 1. 3-8=?, 2. 6-(-7)=?, 3. -10+(-9)=?, 4. -5-(-4)

Mathematics
1 answer:
kiruha [24]3 years ago
5 0
3-8=-5
6-(-7)=13
-10+(-9)=-19
-5-(-4)=-1
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Find the area of the shaded region. Round the the nearest tenth.
Brums [2.3K]

Answer:

226.084 sq.m.

Step-by-step explanation:

Radius of circle = 18.6 cm

Area of sector = \frac{\theta}{360^{\circ} }\pi r^2

Area of sector = \frac{123}{360} \times 3.14 \times (18.6)^2

Area of sector = 371.157 m^2

Area of triangle = \frac{1}{2} \times a \times b \times Sin x

a = OA = radius = 18.6 cm

b = OB = radius = 18.6 cm

x =123 °

Substitute the values in the formula

Area of triangle = \frac{1}{2} \times 18.6 \times 18.6 \times Sin 123

Area of triangle = 145.073 m^2

So, Area of shaded region = Area of sector - Area of triangle

                                            =371.157 m^2-145.073 m^2

                                            =226.084 m^2

Hence the area of the shaded region is 226.084 sq.m.

5 0
4 years ago
In a right triangle, the sine of an angle is 0.854. what is the cosine of the same angle? there are two possible answers, one po
klemol [59]
Hi,


\cos(0.854)  = 0.656

Hope this helps.
r3t40
7 0
4 years ago
Tricias mother let her play outside for 15 minutes. When she went out side, she played with her dog for 5 minutes. Then she rode
Slav-nsk [51]

Answer:

6 minutes

Step-by-step explanation:

15-5=10

10-4=<u>6</u>

6 0
3 years ago
14.
romanna [79]
1. C
2.D
3.A
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Hope this helps!
5 0
4 years ago
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WARRIOR [948]

Answer:

the answer is 37/7

Step-by-step explanation:

u multiply the 5 and the seven and add the 2 and u get 37/7 so u keep the denominator the same

5 0
3 years ago
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