4 years ago

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. Find m∠F. a.30° b.60° c.15° 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.

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3 years ago

Solve for x. 7 inches Х 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

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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?

Viefleur [7K]

If the sum of their lengths is 5,520 miles then River D is 2360 and River C is 3160

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4 years ago