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Kruka [31]
2 years ago
15

Could anyone explain to me about adding and subtracting exponents. I don’t understand these equations with their exponents!

Mathematics
1 answer:
meriva2 years ago
8 0

Answer:

whenever you're multiplying terms that have exponents you multiply the coefficients and add their exponents:

Step-by-step explanation:

I think the answer to your first question should be:

30a²b - 30ab²

Your second answer is good

whenever you're multiplying terms that have exponents you multiply the coefficients and add their exponents:

for example, 6a²b³c x 2abc = 6(2)(a²)(a)(b³)(b)(c)(c)

= 12a³b⁴c²

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PLEASE HELP!!
Tems11 [23]
For 70 people i would say ab 445
4 0
3 years ago
Elena has bought 320 tropical fish for a museum display. She bought 7 times as many triggerfish as parrotfish. How many of each
STALIN [3.7K]
The total number of fish bought was 320. And you know she bought two types of fish. The best way to solve this is guess and check. It would be the fastest. So she bought 7 times as many trigger-fish as parrot fish that means the number of trigger-fish bought was 7p. This means 320 = 7p +p. So all you do is take educated guesses for the number of parrot fish and check if it is right. So if she bought 50 parrot fish. 7(50) + 50 = 400. Close but a bit high. Lets keep guessing. 7(35) + 35 = 245. So now we know the answer is between 50 and 35. So lets try 40. 7(40) + 40 =320. That works so we know she bought 40 parrot fish and 280 trigger-fish.
8 0
3 years ago
When subtracted, what is the simplified form of (54 - 27i) - (39 + 5i)? Write the answer in standard form, a + bi, where a and b
jasenka [17]
The answer is choice D because if you combine the like terms, you get 15-23i

i hope that helps!!!!
7 0
3 years ago
Read 2 more answers
The point-slope form of a line that has a slope of –2 and passes through point (5, –2) is shown below.
Ilya [14]

Answer:

y =-2x+8

Step-by-step explanation:

We have a point and a slope

(5,-2)  and m =-2

The slope intercept form of a line is

y = mx+b

y = -2x+b

Substitute in the point

-2 = -2(5)+b

-2 = -10+b

Add 10 to each side

-2+ 10 = -10+10 +b

8 = b

The equation is

y =-2x+8

8 0
3 years ago
Read 2 more answers
If 2 packs of cookies cost $7.00, how many packs can you get for $17.50?
klasskru [66]

Answer:

You could get 5 packs of cookies.

Step-by-step explanation:

Each pack would cost $3.50, so we would have to divide $17.50 by $3.50, which would give us 5 packs of cookies

3 0
2 years ago
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