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3 years ago

I need help plssssssssssssssss

Mathematics

1 answer:

Anastasy [175]3 years ago

6 0

Answer:

I think that its A.

Step-by-step explanation:They are just variations of the same function.

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Dawn bought 12 grams of chocolate. she ate half of the chocolate. How many grams of chocolate did she eat?

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Half of twelve is six.

She ate 6 grams.

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3 years ago

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Marie will earn $15 per hour at a new job.

denis-greek [22]

What’s the question?

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Prove the identity sin4x=2sin2xcos2x

Musya8 [376]

There is a trig identity called the sum of 2 angles for sin its
sin(a+b)=sin(a)cos(b)+cos(a)(sin(b)

You will need to use it. So in your question split the 4x in 2 equal parts 2x and 2x

sin(4x)=sin(2x+2x)

Now using the expansion above you will get

sin(2x+2x)=sin(2x)×cos(2x)+cos(2x)×sin(2x)

And it will simplify to

2sin(2x)cos(2x)

I hope this helps you! Good luck :)

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3 years ago

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"Each week, a subcommittee of four individuals is formed from among the members of a committee comprising seven individuals. Two

denis-greek [22]

Answer:

140 weeks.

Step-by-step explanation:

We are being asked for the maximum number that can elapse without having 2 subcommitees with the same members and the same chair. Notice that the secretary is not mentioned in this statement, so we can ignore that position.

Now, the maximum number of weeks would be equal to the total possible combinations of subcommitees that can be formed from the 7 individuals commiteed, times the number of options that can sit at the chair possition.

The total possible combinations of subcommitees that can be formed from the 7 individuals can be expressed like the following expression. Notice that there is no a particular order to be considered, so we use the combination formula:

$\left[\begin{array}{ccc}7\\4\end{array}\right]$ = $\frac{7!}{4!(7-4)!}$ = 35

Now, each of the 4 individuals have the same probability of being chosen as the chair commitee. So, we have to multiply 4 times the number of possible subcommitees in order to arrive our answer:

x = 35 * 4 = 140

This would be the maximum number of subcommitees that can be formed with no subcommitees with the same members and the same chair occurring.

3 0

3 years ago

During bowling practice, Oscar rolled 14 strikes out of 70 attempts, What

quester [9]

Answer:

20% or 0.2

Step-by-step explanation:

u do 14÷70=0.2

to get the percent you move the decimal two places right

0.2⇒20.0⇒20%

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3 years ago