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Viktor [21]
3 years ago
15

In a group of Year 9 students, the ratio of boys to girls is 9 : 7. There are 4 more boys than girls in this group. How many stu

dents are in this group altogether?
Mathematics
1 answer:
KATRIN_1 [288]3 years ago
7 0

Answer: 32

Step-by-step explanation:

There are 18 boys and 14 girls (4 more boys than girls.  32 students total.

You might be interested in
What is the solution to the equation fraction 4 over 5 n minus fraction 3 over 5 equals fraction 1 over 5 n?
Lilit [14]
If you would like to know the solution to the equation, you can calculate this using the following steps:

4/5n - 3/5 = 1/5n     /*5n
4 - 3/5 * 5n = 1
4 - 3n = 1
4 - 1 = 3n
3 = 3n
n = 1

The correct result would be n = 1.
7 0
3 years ago
Please I need help!!!​
egoroff_w [7]

Answer:

Equation is P=4s

Step-by-step explanation:

There is a pattern here:

8 is 4 times as much as 2

12 is 4 times as much as 3

20 is 4 times as much as 5

40 is 4 times as much as 10

Since P varies directly with s, we can make an equation: P=4s where k=4 in the form of y=kx

8 0
4 years ago
Each year rolando saves 8% of his income. This year he saved $3000 and his salary was $2000 less than in the previous year. What
Gnoma [55]
Answer:
$39500

Explanation:
The first part of this question states that Kyle saves 8% of his salary each year. This year he earned $3000. This can be translated into
3000
=
x
⋅
8
%
, or
3000
=
0.08
x
. First you divide both sides by 0.08, which equals
3000
0.08
=
x
, which gets you $37500.
The second part of the question says Kyle earned $2000 less this year compared to last year. Simply add $2000 onto $37500 to find that Kyle earned $39500 last year.
6 0
3 years ago
What’s 5+5 please help me on this question
Serjik [45]

Answer:

10

Step-by-step explanation:

5 adding 5=10

3 0
3 years ago
4 out of 9 how many groups can be made?
Len [333]

Answer:

its a combination problem, so in your calculator put 9 nCr 4 and you'll get 126. i hope this helps. :)

Step-by-step explanation:


5 0
4 years ago
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