What is the product of −212 and −312 ? Enter your answer as a mixed number, in simplified form, in the box.
1 answer:
(-2 1/2)×(-3 1/2) = (2 1/2)×(3 1/2) . . . . deal with the signs up front. The product of two negatives is a positive.
... = 2×(3 1/2) + (1/2)×(3 1/2) . . . . . use the distributive property
... = 2×3 + 2×(1/2) + (1/2)×3 + (1/2)×(1/2) . . . . and again
... = 6 + 1 + 3/2 + 1/4
... = 7 + (1 1/2) + 1/4
... = 8 + 2/4 + 1/4
... = 8 3/4
_____
On your calculator, -2.5 × -3.5 = 8.75.
You might be interested in
Answer:
When heated calcium carbonate forms calcium oxide and carbon dioxide.
The answer is D
Hope this helps
Answer:
27
Step-by-step explanation:
f(x) = 5x - 8
f(7) = 5(7) - 8 = 27
1. 2/7
2. 2/15
3. 5/24
4. 2/11