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torisob [31]
1 year ago
7

216 students enrolled in a freshman-level chemistry class. By the end of the semester, 5 times the number of students passed as

failed. Find the number of students who passed, and the number of students who failed.​
Mathematics
1 answer:
Semenov [28]1 year ago
6 0

Answer:

The no. of student failed is 36.

Step-by-step explanation:

Given, the number of student enrolled= 216

Let us suppose number of student failed = x

Given,

no. of student passed is 5 times no. of student failed.

Then, no. of student passed = 5x

x +5x = 216

6x = 216

x = 216/6

x = 36

Thus, the no. of student failed is 36.

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A manufacturer of bolts has a​ quality-control policy that requires it to destroy any bolts that are more than 4 standard deviat
Doss [256]

Answer:

more than 15.40 cm and less than  14.60 cm

Step-by-step explanation:

A manufacturer of bolts has a quality control policy that requires it destroy any bolts that are more than 4 standard deviations from the mean.

mean length= 15 cm

standard deviation= 0.10 cm

4 standard deviation from mean= 15±(4×0.10)

therefore, bolts of length more than 15+0.4, and less than 15-0.4 will be destroyed

= 15.40 cm and 14.60 cm

4 0
3 years ago
Help!!! Find the center and radius of the circle with the equation (x-4)²+(y+6)²=16
WITCHER [35]

Answer:

Center:  (4,-6)

Radius: 4

Step-by-step explanation:

It is necessary to remember that the Equation of the circle in Center-radius form, is:

(x -h)^2 + (y-k)^2 = r^2

Where the center of the circle is at the point (h, k) and the radius is "r".

Then, given the following equation of the circle:

(x-4)^2+(y+6)^2=16

We can notice that it is written in Center-radius form. Then we can identify that:

h=4\\k=-6

Therefore the center is:

(4,-6)

And the radius is:

r^2=16\\\\r=\sqrt{16}\\\\r=4

5 0
3 years ago
Read 2 more answers
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bulgar [2K]

x-int: -0.5; y-int: 1

7 0
3 years ago
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Which of the following expressions can you multiply using the FOIL Method? Check all that apply. Please Hurry. 50 points!!
Helen [10]

Answer: the answers are

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Step-by-step explanation: i took the test and got it right hope this helps!

8 0
2 years ago
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k0ka [10]

Answer:

20%

Step-by-step explanation:

90 - 75 = 15

15 ÷ 75 = 0.2

0.2 x 100% = 20%

8 0
3 years ago
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