This confusing to me???
Find the sum.
7 and four-fifths plus 1 and nine-tenths equals what number?
A. 8 and two-fifths
B. 9 and two-fifths
C. 9 and seven-tenths
D. 8 and seven-tenths
NOOOOOOOOO I WANT ANSWERS NOOOOOOOOOW!!!
its 9 7/10
7 4/5 + 1 9/10 = 39/5 + 19/10 = 78/10 + 19/10 = 97/10 = 9 7/10.
ME WANT ANSWERS!!!
>:(
Try brainly.com
thanks but they weren't helpful to me
Yay it worked thanks @Fufucuddly
GIMMEEEEE ANSWERSSS!!!! plz.
To find the sum of 7 and four-fifths plus 1 and nine-tenths, you can add the whole numbers separately from the fractions. Here's how you can do it step by step:
1) Add the whole numbers: 7 + 1 = 8
So, the sum of the whole numbers is 8.
2) Next, add the fractions: four-fifths plus nine-tenths. To add fractions, you need a common denominator.
To find the common denominator, you need to determine the least common multiple (LCM) of the denominators 5 and 10.
Multiples of 5: 5, 10, 15, 20, 25, 30...
Multiples of 10: 10, 20, 30, 40...
From the list, you can see that the least common multiple (LCM) of 5 and 10 is 10.
3) Once you have the common denominator, you can add the fractions. To add fractions with the same denominator, you simply add the numerators.
For four-fifths (4/5), multiply the numerator and denominator by 2 to make the denominator 10:
(4/5) x (2/2) = 8/10
For nine-tenths (9/10), no need to alter since the denominator is already 10.
Now, add the fractions with the common denominator:
8/10 + 9/10 = (8 + 9)/10 = 17/10
4) Finally, combine the whole number and the fraction to get the sum:
8 + 17/10
To convert the fraction into a mixed number, divide the numerator (17) by the denominator (10). The quotient will be the whole number, and the remainder will be the numerator of the fraction:
17 ÷ 10 = 1 remainder 7
So, the sum is 8 and 7/10.
Comparing the options given:
A. 8 and two-fifths: This is not the correct sum.
B. 9 and two-fifths: This is not the correct sum.
C. 9 and seven-tenths: This is not the correct sum.
D. 8 and seven-tenths: This matches the sum we calculated.
Therefore, the correct answer is option D. 8 and seven-tenths.