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Mama L [17]
3 years ago
15

What is the product of −212 and −312 ? Enter your answer as a mixed number, in simplified form, in the box.

Mathematics
1 answer:
Natalija [7]3 years ago
5 0

(-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.

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A local business catered their Annual Thanksgiving Employee and Family Celebration. The cost of the event was $877.87 plus 7% sa
Talja [164]

Answer: $939.32

Step-by-step explanation:

The cost of the event = $877.87

Sales tax = 7%

Final cost = Cost of event + Sales tax

Sales tax = 7% of 877.87

= 7/100 × 877.87

= 0.07 × 877.87

= 61.45

Final cost = Cost of event + Sales tax

= 877.87 + 61.45

= $939.32

The final cost is $939.32

8 0
3 years ago
If corresponding angles are on parallel lines, then their measure is the same _____.
weqwewe [10]

Step-by-step explanation:

always .

plz mark my answer as brainlist.hope this will be helpful to you

6 0
2 years ago
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Organizers of an outdoor summer concert in Toronto are concerned about the weather conditions on the day of the concert. They wi
Kobotan [32]

Answer:

The value of the expected profit from the concert is 8,910

Step-by-step explanation:

Profit on a clear day X₁ = 36,000 with  13% probability.  

i.e  X₁ = 36000

    P(X₁) = 0.13

Profit on a cloudy day = 17,000 with 39% probability.

i.e  X₂ = 17000

    P(X₂) = 0.39

else,

loss of 5,000 if it rains with the probability of 48%.

i.e  X₃ = 5000

    P(X₃) = 0.48

The value of the expected profit from the concert is obtained as follows

Expected Value = (36,000*0.13) + (17,000*0.39) - (5,000*0.48)

                           = 4,680 + 6,630 - 2,400

                           = 8,910

8 0
3 years ago
Find the area of a circle with a circumference of 12.56 units​
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8 0
3 years ago
Anyone good in Geometry
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Answer:

10

Step-by-step explanation:

6x = 60

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