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V125BC [204]
3 years ago
15

Use the diagram to derive the law of cosines.

Mathematics
1 answer:
vladimir1956 [14]3 years ago
7 0

Answer:

B) x= a cos C

Step-by-step explanation:

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What is 5 +5 ...........
makkiz [27]
5 + 5 is 10...

Start with 5 on one hand and use the other hand (count 5 on that one)

Word problem to make this a little bit 'simplier'

You have 5 squares (◾◾◾◾◾) and you tag along have more (◾◾◾◾◾). How many do you have all together? 10 squares.

◾◾◾◾◾ + ◾◾◾◾◾ (⬅count those squares )


8 0
3 years ago
Multiply using a special product formula <br>(5x-6)(5x+6)=□ (Simplify Your Answer)
Kryger [21]
<span>(5x-6)(5x+6)
= (5x)^2 -  6^2
= 25x^2 - 36</span>
4 0
3 years ago
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A reporter collects a random sample of 50 runners from all the runners who finished the Cherry Blossom Ten Mile Run in 2009 and
goldenfox [79]

Answer:

Option D

Step-by-step explanation:

A reporter collects a random sample of 50 runners from all the runners who finished the Cherry Blossom Ten Mile Run in 2009 and constructs a 99% confidence interval for the true mean finish time to be (86.05, 99.38) minutes.

Assuming the reporter performed the calculations correctly, which of the following statements are appropriate interpretations of this confidence interval?

We can expect that 99% of confidence intervals created using the same method the reporter used will contain the true mean run time for runners of this race.

4 0
3 years ago
What GPA do you need to pass 8th grade
n200080 [17]

Answer:

2.0/4.0

Step-by-step explanation:

8 0
2 years ago
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What is the area of this figure?
s2008m [1.1K]

Step-by-step explanation:

it clearly consists of 2 rectangles and 1 triangle (as you tried correctly to point out by drawing the separating lines).

we only need to calculate all 3 areas and add them up for the total.

the area of a rectangle is

length × width

so, in our 2 cases we have

6 × 2 = 12 km²

5 × (3 + 2 + 3) = 5×8 = 40 km²

the area of a triangle is

baseline × height / 2

in case of a right-angled triangle the 2 sides enclosing the 90° angle can be used as baseline and height.

so, in our case

6 × (5 + 2 + (3 + 2 + 3 - 2)) / 2 = 6×(7 + 6)/2 = 3×13 = 39 km²

in total, the whole area is

12 + 40 + 39 = 91 km²

4 0
2 years ago
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