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pychu [463]
2 years ago
14

The average of Manny's three tests is an 84. What must he get on a 4th test to raise his averageto a 87?

Mathematics
1 answer:
Ad libitum [116K]2 years ago
6 0

90 because 84 plus 90 divided by 2 is 87.

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Help me if you know this ,Thanks
dolphi86 [110]
The answer is 185 ft 2.

Since it is a parralellogram you have to multiply the base x height.
And it has a 2 right next to it because you multiplied base x height
     
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5 0
3 years ago
Read 2 more answers
There are exactly 20 students currently enrolled in a class. How many different ways are there to pair up the 20 students, so th
sergij07 [2.7K]

Answer:

The students can be paired up in 654,729,075 ways

Step-by-step explanation:

The 20 people can organize themselves in a line. The first and second people can make up a pair, the 2nd and 3rd can do the same. This can be done until all 20 of them have a pair. This will be done in 20! ways

If the two people in a pair swap positions. In mathematics, it is considered as a different arrangement.  This can be done 2^{10} ways since there are 10 pairs We will have to divide by this.

If the 10 pairs can swap places with each other, it will form another pair. As a matter of fact, the 10 pairs can swap pairs with each other all they like. This can be done in 10! ways. we will also have to divide by this.

Hence the total number of ways = \frac{20!}{2^{10}\times 10! } = 654,729,075 ways

6 0
3 years ago
Which linear function represents the line given by the point-slope equation y + 7 = –(x + 6)?
Liula [17]
the answer is A.) f(x)=-2/3x-11 

5 0
2 years ago
Y= 6(1.013) x x+ 110
Sveta_85 [38]
If u tell me what operation<span> is in between both the x's, then i can solve it for you</span>
5 0
2 years ago
3y=2x+15<br> Solve the equation for the y variable?<br> Please help me out on this !!!
sukhopar [10]

Step-by-step explanation:

3y=2x+15 \:

y =   \frac{2x + 15}{3}

6 0
2 years ago
Read 2 more answers
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