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Levart [38]
3 years ago
7

Let g(x) = 2x2 - 11x. Find g(-1).

Mathematics
1 answer:
marusya05 [52]3 years ago
6 0
Hey there :)

g ( x ) = 2x² - 11x

For g ( - 1 ) , you need to substitute - 1 in place of x

g ( - 1 ) = 2 ( - 1 )² - 11 ( - 1 )
           = 2 ( 1 ) + 11
           = 2 + 11
           = 13  →  Your answer
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I need help on this question
Pavel [41]

4.2% means 0.042 .

4.2% more than some amount is 1.042 of it.

Interest compounded annually means that a year after you deposit some money
into your bank account, the bank looks to see how much of your money has been
there for a year, and they add  4.2%  of that into your account.  Another way to
look at it is that they change the balance in your account, from the amount it was
a year ago, to  1.042  of that amount. That's right. They just <u>give</u> you free money !

Why that's so good is:  Now the new amount in your account is  1.042  of
the amount you originally deposited, and after another year, they'll give you
another  4.2%  of <em><u>that</u></em> larger amount. Then you'll have  (1.042)² = about  <em><u>
8.6% more</u></em><em /> than your original deposit, 2 years earlier.

At the end of any number of years ... call it 't' years ... the amount in your
account is the amount you deposited, multiplied by  (1.042)^'t' power.

If you just put some money into this particular bank, and forget about it
and never touch it, you'll have <em><u>double</u></em> the amount in 17 years.

Now we can go and take care of Rhonda.

She put $3000 into a new account at the the bank, and then she forgot
about it and never touched it. How much is in that account after 't' years ?
The amount that's in that account at any time is called the 'balance'.
How much is it after 't' years ?

         <em>  Balance = 3,000 (1.042)^'t' power .</em>


5 0
3 years ago
Question 2
VladimirAG [237]

Step-by-step explanation:

I think no. C is the answer. Please let me know by comment I am wrong or right

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125x2= 250 cars in a negborhood
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3 years ago
Try this, please!
mestny [16]
Check the picture below.

the triangle is an isosceles, so it has twin legs, and a base bottom.

the twin sides stem from the "vertex", and we know the vertex is 120°, and since the triangle is inscribed in a circle, because the circle is "circumscribing" it, then the base side of the triangle will be the diameter of it.

if we run a perpendicular line to the base from the vertex, we'll split the vertex in two 60° angles, as you see there, giving us a 30-60-90 triangle on each side.

so, anyhow, the rest is just a matter of using the 30-60-90 rule.

that's the diameter, and as you know, the radius is just the length of the base, or half the diameter.

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A sound wave enters a new medium where sound travels faster. How does this affect the frequency and wavelength of the sound?
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The frequency stays the same and the wavelength decreases.
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