Question
Divide and simplify.
- 5/8 / 4/5
Responses
A −2
B − 1/2
C
− 25/32
D 1/2
- 5/8 / 4/5
Responses
A −2
B − 1/2
C
− 25/32
D 1/2
Answers
GPT-4o mini
To divide fractions, you multiply the first fraction by the reciprocal of the second fraction.
So we have:
\[
-\frac{5}{8} \div \frac{4}{5} = -\frac{5}{8} \times \frac{5}{4}
\]
Now, multiply the fractions:
\[
-\frac{5 \times 5}{8 \times 4} = -\frac{25}{32}
\]
Thus, the simplified result is:
\[
-\frac{25}{32}
\]
The correct answer is:
**C** \(-\frac{25}{32}\)
So we have:
\[
-\frac{5}{8} \div \frac{4}{5} = -\frac{5}{8} \times \frac{5}{4}
\]
Now, multiply the fractions:
\[
-\frac{5 \times 5}{8 \times 4} = -\frac{25}{32}
\]
Thus, the simplified result is:
\[
-\frac{25}{32}
\]
The correct answer is:
**C** \(-\frac{25}{32}\)
Hummingbird 7th
Multiply.
− 1/2 x 3/7
Responses
A − 3/14
B
− 3/9
C
3/14
D 1/3
− 1/2 x 3/7
Responses
A − 3/14
B
− 3/9
C
3/14
D 1/3
GPT-4o mini
To multiply fractions, you simply multiply the numerators together and the denominators together.
Given:
\[
-\frac{1}{2} \times \frac{3}{7}
\]
Multiply the numerators:
\[
-1 \times 3 = -3
\]
Multiply the denominators:
\[
2 \times 7 = 14
\]
So,
\[
-\frac{1}{2} \times \frac{3}{7} = -\frac{3}{14}
\]
The correct answer is:
**A** \(-\frac{3}{14}\)
Given:
\[
-\frac{1}{2} \times \frac{3}{7}
\]
Multiply the numerators:
\[
-1 \times 3 = -3
\]
Multiply the denominators:
\[
2 \times 7 = 14
\]
So,
\[
-\frac{1}{2} \times \frac{3}{7} = -\frac{3}{14}
\]
The correct answer is:
**A** \(-\frac{3}{14}\)
Hummingbird 7th
4 1/3 / -1 1/5
Find the quotient above.
Responses
A
3 and 11 over 18
B
negative 4 and 1 third
C
negative 3 and 11 over 18
D 4 1/3
GPT-4o mini
To find the quotient of the mixed numbers \(4 \frac{1}{3}\) and \(-1 \frac{1}{5}\), we first convert them to improper fractions.
1. Convert \(4 \frac{1}{3}\):
\[
4 \frac{1}{3} = \frac{4 \times 3 + 1}{3} = \frac{12 + 1}{3} = \frac{13}{3}
\]
2. Convert \(-1 \frac{1}{5}\):
\[
-1 \frac{1}{5} = -\left(\frac{1 \times 5 + 1}{5}\right) = -\left(\frac{5 + 1}{5}\right) = -\frac{6}{5}
\]
Now, we divide the two improper fractions:
\[
\frac{13}{3} \div -\frac{6}{5}
\]
To divide by a fraction, we multiply by its reciprocal:
\[
\frac{13}{3} \times -\frac{5}{6}
\]
Now, we multiply the fractions:
\[
\frac{13 \times -5}{3 \times 6} = \frac{-65}{18}
\]
Next, let's convert \(-\frac{65}{18}\) back to a mixed number:
1. Divide \(65\) by \(18\):
\[
65 \div 18 = 3 \quad (\text{with a remainder of } 11)
\]
So, we can write:
\[
-\frac{65}{18} = -3 \frac{11}{18}
\]
The correct answer is:
**C** \(-3 \frac{11}{18}\)
1. Convert \(4 \frac{1}{3}\):
\[
4 \frac{1}{3} = \frac{4 \times 3 + 1}{3} = \frac{12 + 1}{3} = \frac{13}{3}
\]
2. Convert \(-1 \frac{1}{5}\):
\[
-1 \frac{1}{5} = -\left(\frac{1 \times 5 + 1}{5}\right) = -\left(\frac{5 + 1}{5}\right) = -\frac{6}{5}
\]
Now, we divide the two improper fractions:
\[
\frac{13}{3} \div -\frac{6}{5}
\]
To divide by a fraction, we multiply by its reciprocal:
\[
\frac{13}{3} \times -\frac{5}{6}
\]
Now, we multiply the fractions:
\[
\frac{13 \times -5}{3 \times 6} = \frac{-65}{18}
\]
Next, let's convert \(-\frac{65}{18}\) back to a mixed number:
1. Divide \(65\) by \(18\):
\[
65 \div 18 = 3 \quad (\text{with a remainder of } 11)
\]
So, we can write:
\[
-\frac{65}{18} = -3 \frac{11}{18}
\]
The correct answer is:
**C** \(-3 \frac{11}{18}\)
Hummingbird 7th
Multiply: (−14)(28)
Responses
A −392−392
B −378−378
C 378378
D 392
Responses
A −392−392
B −378−378
C 378378
D 392
GPT-4o mini
To multiply \(-14\) and \(28\):
\[
(-14) \times 28 = -392
\]
Thus, the result is:
**A** \(-392\)
\[
(-14) \times 28 = -392
\]
Thus, the result is:
**A** \(-392\)
Hummingbird 7th
(2.5)(−1.3) =
Responses
A 3.253.25
B 1.21.2
C −1.2−1.2
D −3.25
Responses
A 3.253.25
B 1.21.2
C −1.2−1.2
D −3.25
GPT-4o mini
To multiply \(2.5\) and \(-1.3\):
\[
(2.5)(-1.3) = -3.25
\]
Thus, the result is:
**D** \(-3.25\)
\[
(2.5)(-1.3) = -3.25
\]
Thus, the result is:
**D** \(-3.25\)
Hummingbird 7th
-4.32 × -1.25
Responses
A -5.4-5.4
B -6.125-6.125
C 5.45.4
D 6.125
Responses
A -5.4-5.4
B -6.125-6.125
C 5.45.4
D 6.125
GPT-4o mini
To multiply \(-4.32\) and \(-1.25\):
\[
(-4.32) \times (-1.25) = 5.40
\]
Thus, the result is:
**C** \(5.4\)
\[
(-4.32) \times (-1.25) = 5.40
\]
Thus, the result is:
**C** \(5.4\)