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2 years ago

7

A fair number cube, with numbers 1 through 6, was rolled 200 times. The number 5 was rolled 34 times. If the number cube was rol

led 300 times, approximately how many times would the number 5 be rolled?
A:9

B:15

C:51

D:134

2 answers:

just olya [345]2 years ago

5 0

Answer:

51

Step-by-step explanation:

34/200=.17

.17×300= 51

oee [108]2 years ago

4 0

The answer is D i think

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A triangular lot has sides of 215m, 185m, and 125m. Find the measures of the angles at its corners

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Answer:

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Step-by-step explanation:

see the attached figure to better understand the problem

step 1

Find the measure of angle A

Applying the law of cosines

$185^{2}= 215^{2}+125^{2}-2(215)(125)cos(A)$

$2(215)(125)cos(A)= 215^{2}+125^{2}-185^{2}$

$cos(A)= [215^{2}+125^{2}-185^{2}]/(2(215)(125))$ $cos(A)=0.513953$

$A=arccos(0.513953)=59.1\°$

step 2

Find the measure of angle B

Applying the law of cosines

$125^{2}= 215^{2}+185^{2}-2(215)(185)cos(B)$

$2(215)(185)cos(B)= 215^{2}+185^{2}-125^{2}$

$cos(B)= [215^{2}+185^{2}-125^{2}]/(2(215)(185))$ $cos(B)=0.81489$

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step 3

Find the measure of angle C

Applying the law of cosines

$215^{2}= 125^{2}+185^{2}-2(125)(185)cos(C)$

$2(125)(185)cos(C)= 125^{2}+185^{2}-215^{2}$

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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