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guajiro [1.7K]
4 years ago
9

Please help question in the picture

Mathematics
1 answer:
andreyandreev [35.5K]4 years ago
8 0

Answer:

the third answer

Step-by-step explanation:

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2. <br> Find m∠F.<br><br> a.30°<br><br> b.60°<br><br> c.15°<br><br> d.10°
Juliette [100K]

Answer:

Step-by-step explanation:

\sf Sin \ F = \dfrac{Opposite \ of \ angle \ F}{hypotenuse}

       = \dfrac{9}{18}\\\\= 0.5

    F = Sin^{-1} \ (0.5)\\

        = 30°

4 0
2 years ago
Consider the proof. Given: In △ABC, BD ⊥ AC Prove: the formula for the law of cosines, a2 = b2 + c2 – 2bccos(A) Statement Reason
loris [4]

Solution: The missing reason in Step 8 is substitution of x=c\cos (A).

Explanation:

The given steps are used to prove the formula for law of cosines.

From step 5 it is noticed that our equation is

a^2=b^2-2bx+c^2      ..... (1)

From step 7 it is noticed that the value of x is c\cos (A).

So by substituting c\cos (A) for x in equation (1) we get the equation of step 8, i.e.,

a^2=b^2-2bc\cos (A)+c^2

Hence, the missing reason in Step 8 is substitution of x=c\cos (A).



5 0
4 years ago
Read 2 more answers
there are 32 students in 4th grade class.Each table in the classroom seats 6 students.how many tables will be needed
vagabundo [1.1K]
This question wants you to divide 32 tables by 6 students which is 5.3333. Since 5 tables is not enough, 6 tables are needed.
3 0
3 years ago
Solve for x.<br> 7 inches<br> Х<br> 11 inches
jonny [76]

Answer:

8.49 inches

Step-by-step explanation:

x^2 + 7^2 = 11^2

x^2 + 49 = 121

X^2 = 121 - 49

x^2 = 72 (then take square root on both sides)

x = 8.49 inches

7 0
4 years ago
River C is 400 miles longer than River D. If the sum of their lengths is 5 comma 520 ​miles, what is the length of each​ river?
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If the sum of their lengths is 5,520 miles then River D is 2360 and River C is 3160
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