The table shows the number of students in a class who play on a school team and/or are members of a school club:

Mathematics

1 answer:

eimsori [14]3 years ago

3 0

This one is very simple.

create a simple equation to find out

15 = 12 + x

subtract 12 from each side

x= 3

the missing number is 3

or, to be even simpler, take the total, subtract the total from the number you know and the difference is the missing number.

hope I helped

ALSO, we can check going down vertically. 3 + 10 =13. this is the total listed at the bottom.

You might be interested in

Hal is asked to write an exponential function to represent the value of a $10,000 investment decreasing at 2% annually. What mul

Inga [223]

Answer

The multiplicative rate of change that should be in Hal’s function = 49/50=0.98

=9.8×10⁻¹

Explanation

The investment of $10,000 decreases by 2% every year. So the following year is usually (100 - 2)=98% of the previous year. This is a geometric progression.

In this case the first term = 10000

The second term = 98% × 10000 = 9800.

The common ratio = 9800/10000=49/50

The multiplicative rate of change that should be in Hal’s function = 49/50=0.98.

The equation of the exponential rate would be;

10,000ₓ0.98ⁿ.

where n is the number years.

Hope his helps! ;)

8 0

3 years ago

Three ways to make 26

Alik [6]