2 years ago

Add or subtract mentally 16.9+ 12.1

Mathematics

2 answers:

saul85 [17]2 years ago

7 0

When you add it mentally you'd get 29
When you subtract it mentally you'd get 4.8

Ostrovityanka [42]2 years ago

6 0

Well, just add or subtract it form the back and work your way to the front, and you have to remember what the digit was.

16.9 + 12.1 = 29
16.9 - 12.1 = 4.8

You might be interested in

If y = 17.5 when x = 12, find y when x = 6.

kotykmax [81]

Answer:

What is 2x + 5 (y-1) when x=8 and y=5

Step-by-step explanation:

CAN SOMEONE HELP PLS

4 0

2 years ago

Read 2 more answers

Describe how to find the sale price of an item that has been discounted 25%.

Nadya [2.5K]

You subtract the % that the sale is and take it away from 100%. You get 75% then take the original price and divide it by .75

4 0

3 years ago

Read 2 more answers

Given that, 1 Chinese yuan = £0.11, convert £460 into Chinese yuan. Give your answer to the nearest yuan.

Ugo [173]

Answer:

i so want to know this aswell

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

write an equation that demonstrates the relationship between x and y for the points plotted on the coordinate grid

svetoff [14.1K]

Answer: y=3x-7

Explanation:

The y-intercept is -7 and the line is going up by a rate of 3.

5 0

2 years ago

Find the 59th term of the following arithmetic sequence. 15, 23, 31, 39

m_a_m_a [10]

$15~~,~~\stackrel{15+8}{23}~~,~~\stackrel{23+8}{31}~~,~~\stackrel{31+8}{39}~~,~~...~\hspace{10em}\stackrel{common~difference}{d=8} \\\\[-0.35em] ~\dotfill\\\\ n^{th}\textit{ term of an arithmetic sequence} \\\\ a_n=a_1+(n-1)d\qquad \begin{cases} a_n=n^{th}\ term\\ n=\stackrel{\textit{term position}}{59}\\ a_1=\stackrel{\textit{first term}}{15}\\ d=\stackrel{\textit{common difference}}{8} \end{cases} \\\\\\ a_{59}=15+(59-1)8\implies a_{59}=15+472-8\implies a_{59}=479$

4 0

2 years ago