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3 years ago

Sally counts 7 stars. mike counts I more star than Dally. How many stars do they count in all?

Mathematics

2 answers:

kipiarov [429]3 years ago

7 0

Answer:

Well Sally counted 7 stars. Mike Counted 1 more than Sally. 7+1=8 So if you do 8+7=15 thats total. But if you just want starts that they counted with out recounting it would be 8

Step-by-step explanation:

mr_godi [17]3 years ago

6 0

Answer:

15stars

Step-by-step explanation:

sally = 7

mike = 7+1 =8

so...

7+8=15

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Answer:

A = 36.8°

B = 23.2°

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Step-by-step explanation:

Given:

C = 120°

b = 5

c = 11

Required:

Find A, B, and a.

Solution:

✔️To find B, apply the Law of Sines

$\frac{sin(B)}{b} = \frac{sin(C)}{c}$

Plug in the values

$\frac{sin(B)}{5} = \frac{sin(120)}{11}$

Cross multiply

Sin(B)*11 = sin(120)*5

Divide both sides by 11

$sin(B) = \frac{sin(120)*5}{11}$

Sin(B) = 0.3936

B = $sin^{-1}(0.3936)$

B = 23.1786882° ≈ 23.2° (nearest tenth)

✔️Find A:

A = 180° - (B + C) (sum of triangle)

A = 180° - (23.2° + 120°)

A = 36.8°

✔️To find a, apply the Law of sines:

$\frac{sin(A)}{a} = \frac{sin(B)}{b}$

Plug in the values

$\frac{sin(36.8)}{a} = \frac{sin(23.2)}{5}$

Cross multiply

a*sin(23.2) = 5*sin(36.8)

Divide both sides by sin(23.2)

$a = \frac{5*sin(36.8)}{sin(23.2)$

a = 7.60294329 ≈ 7.6 (nearest tenth)

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Step-by-step explanation:

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Given:

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