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gogolik [260]
3 years ago
9

Can you solve -4a^ - (6a-2) + 3 (a^-1).the arrows that are pointing up is exponent 2.also please show work

Mathematics
1 answer:
Burka [1]3 years ago
5 0
First step is to distribute.
-4a^2 - 6a +2 + 3a^2 -3
Combine like terms
-a^2 -6a -1
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The next model of a sports car will cost 6.6% more than the current model. The current model costs $48,000. How much will the pr
KonstantinChe [14]

Answer:

It's the percent word problem...

So, first you need to find how much will the price increase:

1)6.6% of 48,000$=6.6÷100=0.066×48,000=3168$

3168$- is the price that will increase.

2)48,000+3168=51,168 $- the next price

Answer: the price of the next model will be 51,168 $.

Good luck!

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8 0
3 years ago
Respond to this for 5 points! I know it's not that much but just respond anything you want <3
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3 years ago
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A car is traveling up a steep ramp to a parking garage.the ramp is 445 feet long and rises a vertical distance of 80 feet. What
Alecsey [184]
With the information provided in the problem, we can create a right triangle with the ramp as its hypotenuse, and  the vertical rise as its opposite side from its angle of elevation.
Let E be the angle of elevation from the car to the end of the ramp. We now know that the hypotenuse of our triangle measures 445 feet, and the opposite side measures 80 feet, so we need a trig function that relates our angle of elevation with the hypotenuse and the opposite side. That function is sine:
sine(E)= \frac{80}{445}
E=arcsine( \frac{80}{445} )
E=10.36

We can conclude that the angle of elevation from the car to the end of the ramp is 10.36°.

3 0
3 years ago
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How do I solve these problems? ln(x) = 5.6 + ln(7.5) and log(x) = 5.6 - log(7.5)
SOVA2 [1]

Use the rules of logarithms and the rules of exponents.

... ln(ab) = ln(a) + ln(b)

... e^ln(a) = a

... (a^b)·(a^c) = a^(b+c)

_____

1) Use the second rule and take the antilog.

... e^ln(x) = x = e^(5.6 + ln(7.5))

... x = (e^5.6)·(e^ln(7.5)) . . . . . . use the rule of exponents

... x = 7.5·e^5.6 . . . . . . . . . . . . use the second rule of logarithms

... x ≈ 2028.2 . . . . . . . . . . . . . use your calculator (could do this after the 1st step)

2) Similar to the previous problem, except base-10 logs are involved.

... x = 10^(5.6 -log(7.5)) . . . . . take the antilog. Could evaluate now.

... = (1/7.5)·10^5.6 . . . . . . . . . . of course, 10^(-log(7.5)) = 7.5^-1 = 1/7.5

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8 0
3 years ago
What is 147,591 rounded to the nearest ten
Basile [38]

Answer:

147,590

Step-by-step explanation:

b/c the 90's are in the tens and 5 or more add one more, so since it's less than five, you round down. So the answer would be 147,590

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3 years ago
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