Add −8/15+4/15.(1 point)
A = 4/15
B= -2/15
C = 4/5
D = -4/15
To add -8/15 and 4/15, we simply add their numerators and keep the denominator the same:
-8/15 + 4/15 = (-8 + 4)/15 = -4/15
Therefore, the answer is D, -4/15.
Add −1 3/10 +(−4 2/15).(1 point)
A = -2 5/6
B = -5 13/30
C = -5 1/5
D = -5 1/6
To add -1 3/10 and -4 2/15, we need to first convert the mixed numbers to improper fractions:
-1 3/10 = -10/10 + 3/10 = -13/10
-4 2/15 = -60/15 + 2/15 = -58/15
Now we can add the fractions by finding a common denominator:
-13/10 + (-58/15) = (-13*3)/(10*3) + (-58/15) = -39/30 - 58/15
To combine the fractions, we need to have the same denominator:
-39/30 - 58/15 = -39/30 - (2*58)/(2*15) = -39/30 - 116/30
Now, we can combine the numerators:
-39/30 - 116/30 = (-39 - 116)/30 = -155/30
To simplify the fraction, we can divide both the numerator and denominator by their greatest common divisor, which is 5:
-155/30 = -31/6
Therefore, the answer is D, -5 1/6.
Add −1.2+7.6.(1 point)
A = 8.8
B = -6.4
C = -8.8
D = 6.4
To add -1.2 and 7.6, we can simply add the numbers:
-1.2 + 7.6 = 6.4
Therefore, the answer is D, 6.4.
You got question 2 wrong
it was actually B = -5 13/30
Apologies for the mistake. Let's add -1.2 and 7.6 correctly.
-1.2 + 7.6 = 6.4
Therefore, the answer is D, 6.4 is the correct answer.