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nadya68 [22]
3 years ago
14

Which number is the most convenient to multiply by when solving this linear system of equations by elimination? 3x - 2t = 4 2x -

5 = -t A) -3 B) -1 C) 1 D) 2
Mathematics
2 answers:
lutik1710 [3]3 years ago
7 0

Answer

I got D) 2 on USATestprep


Ronch [10]3 years ago
4 0
It is 42 or 4 times 2

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Find angle "a" in the taper shown. ro
Fiesta28 [93]
Assume symmetry.
Then 
length of opposite side of angle a, L=((4.265-2.84)/2) =>
sin(a)=L/8.53
=((4.265-2.84)/2)/8.53
=0.08353
=>
a=asin(0.08353)
=4.79 degrees
3 0
3 years ago
Solve the problem. For a standard normal distribution, find the percentage of data that are between 3 standard deviations below
solong [7]

Answer:

83.85%

Step-by-step explanation:

We will use the empirical rule. For a standard normal distribution the mean is equal to 0 and the standard deviation is equal to 1. Then, between 3 standard deviations below the mean, we have 2.35% + 13.5% + 34% = 49.85% of data, and 1 standard deviation above the mean we have 34% of data. Therefore, the percentage of data that are between 3 standard deviations below the mean and 1 standard deviation above the mean is 49.85%+34% = 83.85%.

7 0
4 years ago
At a student council meeting, there was a total of 65 students present. Of those students, 35 were female.
Komok [63]

Answer:

a = 50 b = 50

Step-by-step explanation:

a. 35/65=0.53 - rounded to the nearest tenth would equal to 50.

b.

65-35=30

30/65 = .46

rounded to the nearest tenth equals to 50.

Hope this helps!

6 0
3 years ago
(45/360)2πr=9π/4
Lyrx [107]

Answer:

r=9

Step-by-step explanation:

45/360=1/8

1/8*2=2/8

2/8=1/4

1/4*pi*r=(9pi)/4

Divide both sides by 1/4 (the fours cancel each other out)

Pi*r=9*pi

Pi cancels each other out

R=9

Hope this helps

7 0
4 years ago
The number 64 is a perfect ___<br><br> A. Square<br><br> B. Cube<br><br> C. Both
Advocard [28]

Answer:

The answer is both.

Step-by-step explanation:

It is both because 8^{2} is 64 and 4^{3} is 64.

hope this helps :)

8 0
3 years ago
Read 2 more answers
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