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lianna [129]
3 years ago
5

I just need to know how to calculate

Mathematics
1 answer:
Anton [14]3 years ago
8 0

Answer:

-a^{2}

Step-by-step explanation:

\frac{-1}{a^{-2} } = \frac{-1}{\frac{1}{a^{2} } } = -1 * \frac{a^{2} }{1}  = -a^{2}

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Plz Help
PtichkaEL [24]

Answer:

46

Step-by-step explanation:

All I did was add all the numbers and got the answer as 460 you count all the number to get that . Then you divide 460 and 10 to get 46 and then 46 is your answer. Happy to help.

5 0
3 years ago
Read 2 more answers
A shopkeeper buys.rs 250 and sell it for rs 285 gain or loss
allochka39001 [22]

Answer:

gain

Step-by-step explanation:

5 0
3 years ago
A small airplane takes off from point A and continues to climb upward in a straight line, as shown in the diagram. What is the p
harkovskaia [24]
<h3>Answer: Choice D.  12,600 feet</h3>

============================================================

Explanation:

We have two similar triangles here, so we can set up the proportion below to solve for x

5200/(5200+6500) = 5600/x

5200/11700 = 5600/x

5200x = 11700*5600 .... cross multiply

5200x = 65,520,000

x = (65,520,000)/(5200)

x = 12,600 which shows why the answer is choice D

side note: 12,600 ft = 2.386 miles approximately

6 0
3 years ago
How are mathematical models helpful? What are the advantages and disadvantages of using a model?
Gemiola [76]
Mathematical models are helpful. Advantages include helping you see the data clearer and helping you visualize. Disadvantages are: time consuming, and if you make a mistake on the graph, its going to hit the entre thing.
6 0
3 years ago
At a book sale, all books cost less than $5.
Arada [10]

Answer: b<5

Step-by-step explanation:

B Represnts the books and 5 is the 5 dollars so then 5 is greater than b and since 5 dollars is greater than the books price then you should be b<5.

this should be right.

Hoped this helped

6 0
3 years ago
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