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Oksi-84 [34.3K]
1 year ago
15

Student : teacher ratio at a school is 15: 1.

Mathematics
1 answer:
Juli2301 [7.4K]1 year ago
7 0

Answer:

300 students and 150 : 11

Step-by-step explanation:

(i)

sum the parts of the ratio , 15 + 1 = 16 parts

divide the total students/staff by 16 to find the value of one part of the ratio.

320 ÷ 16 = 20 , then

number of students = 15 × 20 = 300

(ii)

number of staff = 320 - 300 = 20

if 2 more teachers join the school then there is a total of 22 staff

student : teacher = 300 : 22 = 150 : 11

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10 2/6 - 7 5/6 i know its prob easy but i need help
miv72 [106K]

Answer: 2 1/3

Explanation:

10 2/6 - 7 5/6

You can make both a fraction by multiplying the denominator by the whole number, and then adding the numerator to that number, and keeping the denominator the same. So, 10*6 = 60 and 60 + 2 = 62 and you keep the denominator as 6, which would make 62/6

7*6 = 42 and 42 + 5 = 47 so 7 5/6 becomes 47/6

10 2/6 is equivalent to 62/6

7 5/6 is equivalent to 47/6

This just makes it easier to look at.

Now you just work through the equation.

62/6 - 47/6 = 15/6

15/6 = 2 3/6 = 2 1/3

3 0
3 years ago
Simplify: <img src="https://tex.z-dn.net/?f=4%5Csqrt%7B320%7D%20-%203%5Csqrt%7B80%7D" id="TexFormula1" title="4\sqrt{320} - 3\sq
aleksandrvk [35]

Answer:

20 √ 5

Step-by-step explanation:

1. You'll need to simplify each term. You'll get 32 √ 5-12 √ 5.

2. After you subtract  12 √ 5  from 32 √ 5, you'll get 20 √ 5.

8 0
3 years ago
Which of the following is not a Pythagorean triple?. . A.. 28, 45, 53. B.. 16, 63, 65. C.. 13, 84, 85. D.. 11, 61, 62.
Anna11 [10]
A set of numbers is said to be Pythagorean triple if the sum of the squares of the lesser numbers equal the square of the remaining number,

A. 28² + 45² = 2809    ;  53² = 2809     ; EQUAL
B. 16² + 63² = 4225    ;  65²= 4225      ; EQUAL
C. 13² + 84² = 7225    ;  85² = 7225     ; EQUAL
D. 11² + 61² = 3842    ;   62² = 3844     ; NOT EQUAL

The answer is letter D.
6 0
3 years ago
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zlopas [31]
A.   1/6

b.   6/3

c.    1

I think those are the answers
4 0
3 years ago
There are 480 jellybeans in an 8-ounce jar. How many jellybeans are there per ounce in the jar?
Alja [10]
The answer would be 60. This is because 480/8=60. 
7 0
3 years ago
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