2 years ago

The sum of a certain number and -3.4 is -8.1 find the number

Mathematics

2 answers:

pentagon [3]2 years ago

6 0

Answer:

-4.7

Step-by-step explanation:

-8.1 + -3.4 = -4.7

This works because - and + are inverse operations, so you can use + to help find a - problem or see if it's correct, or vise versa.

alexira [117]2 years ago

5 0

Answer:

4.7

Step-by-step explanation:

If you use the rules of the signs to eliminate the minuses and then substract 8.1 from 3.4 you get 4.7 which, if you sum it with 3.4 gives 8.1

You might be interested in

SOMEONE HELP ME OMG HELPP

sasho [114]

Answer:

-12.90, -12.55, 10.25, 10.75, 12.50

Step-by-step explanation:

this is from least to greatest

3 0

1 year ago

5 screen shots plz help plz will choose brianyest and will give 19 pts

Taya2010 [7]

Tigers! Have a great day!

7 0

2 years ago

HIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII

Irina18 [472]

Answer:

helloooooo

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Calculate the unit price ($/g) of a 20g jar of sugar. The cost of a jar is $5.00.

BlackZzzverrR [31]

Answer:

$0.25/g

Step-by-step explanation:

20g --- $5.00

1g --- $\frac{1}{20}$ × $5.00 = $0.25

7 0

2 years ago

The frequency distribution shows the lengths, in inches, of available baseball bat at a batting cage. what is the mean of the fr

ivanzaharov [21]

The mean of a frequency distribution is given by
<span>
$\bar{x}= \frac{\Sigma fx}{\Sigma f} \\ \\ = \frac{(27\times2)+(28\times5)+(31\times3)+(33\times1)+(34\times4)}{2+5+3+1+4} \\ \\ = \frac{54+140+93+33+136}{15} = \frac{456}{15} =30.4$ </span>

6 0

3 years ago

The sum of a certain number and -3.4 is -8.1 find the number​

The sum of a certain number and -3.4 is -8.1 find the number