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Ket [755]
3 years ago
13

Find the missing side lengths. All answers should be in fully simplified form. a=? b?

Mathematics
2 answers:
spayn [35]3 years ago
8 0

Answer: a= 5\sqrt{3} b= 5

Step-by-step explanation:

sin 60=a/10

\frac{\sqrt{3} }{2}=a/10

10\frac{\sqrt{3} }{2} =a

5\sqrt{3}=a

cos 60=b/10

.5=b/10

5=b

Alekssandra [29.7K]3 years ago
7 0

Answer:

a=8 b=6

Step-by-step explanation:

Using the Pythagorean theorem, a^2+b^2=c^2, and in this case, a^2+b^2=10^2 = 100

so a^2+b^2=100

8^2+6^2=100

64+36=100 ✔

and since A is longer than B, a=8, b=6

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Sin4u=2sin 2u cos 2u​
yKpoI14uk [10]

Answer:

If you've learnt sin(A+B) = sinAcosB + cosAsinB,

sin(4u)

= sin(2u+2u)

= sin(2u)cos(2u) + cos(2u)sin(2u)

= 2 sin(2u) cos(2u).

4 0
3 years ago
A medical study investigated the effect of calcium and vitamin supplements on the risk of older Americans for broken bones. A to
timofeeve [1]

Answer:

\frac{37}{389}

Step-by-step explanation:

Given that a  medical study investigated the effect of calcium and vitamin supplements on the risk of older Americans for broken bones. A total of 389 older Americans who lived at home and were in good health were studied over a three-year period. While all of the 389 people took in at least 700 milligrams of calcium and 200 units of vitamin D through their normal diet, 187 of them were given additional supplements containing 500 milligrams of calcium citrate and 70 units of vitamin D daily. Of the 187 who took additional supplements, 11 of them suffered broken bones over the three-year period. Of the 202 older Americans who did not take the additional supplement, 26 of them suffered broken bones over the study period.

                     Group I           Group II           Total

n                      187                  202                389

favour x             11                    26                  37

The fraction of older Americans who were included in the study suffered broken bones during the three-year period

=Total x/total n

= \frac{37}{389}

4 0
3 years ago
Divide. check your answer
slava [35]

Step-by-step explanation:

:)..................

7 0
2 years ago
Pls HELP AND EXPLAIN BRAINLIEST AND 15 POINTS
zhuklara [117]
The first one is 7.4 . 39/5=7 and 4 change so 7.4 . The second one is 1.67 . 5/3 is 1.6 repeated and rounded to the nearest houndredth is 1.67
7 0
2 years ago
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OlgaM077 [116]
Is there suppose to be a picture for your question?

7 0
3 years ago
Read 2 more answers
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