If g(x)= 2x^4+3x^3-x^2, find g(-1)

Mathematics

1 answer:

Nostrana [21]3 years ago

7 0

When you have a function of g(-1) you first plug in -1 to all x's then you solve it.

Answer: x=0

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X/5 -8=4 find the value of x

elena-s [515]

Answer:

x=60

Step-by-step explanation:

I'm assuming you meant this: (x/5)-8=4

In which case you would add 8 to both sides to get rid of the 8 on the left (your goal is to get x by itself so you want to move the numbers on the x side to the other side of the equal sign)

(x/5)=12

Then you would multiply 5 on both sides to get rid of the fraction with the 5 on the bottom on the left side.

x=60

There's your answer.

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3 years ago

Solve in 5 + in 2x = 3

faltersainse [42]

$\ln5+\ln 2x=3\\\\\ln10x=3\\\\e^3=10x\\\\x=\dfrac{e^3}{10}$

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3 years ago

Find the AGI and taxable income:

Juli2301 [7.4K]

This "question" isn't even a question. If the question is asking to calculate AGI and taxable income I can definitely help. This is what I do for a living! I am assuming this is 3 questions.
1. Find the AGI and taxable income: Gross Income $30,856 Adjustments $750 1 Exemption $8200 Deduction $2,300
AGI: $31,200 and $20,601 $30106 --- ANSWER: 30,106 (30,856-750)
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Adjustments $0 3 Exemptions $24,600 Deduction $1469
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3 years ago

Read 2 more answers

If y is directly proportional to x, and y = 5 when x = 2, what is the value of y when x = 6?

Korolek [52]

it could be 2.2 because every 5 you get 2 so it would be 10 and 4 so when y=6 then x should be 2.2.

3 0

3 years ago

Read 2 more answers

MATH HELP!

Irina18 [472]

You have the correct answer. Nice work. If you need to see the steps, then see below

-------------------------------------------------------------------------------

First we need to find the midpoint of H and I
The x coordinates of the two points are -4 and 2. They add to -4+2 = -2 and then cut that in half to get -1

Do the same for the y coordinates: 2+4 = 6 which cuts in half to get 3

So the midpoint of H and I is (-1,3). The perpendicular bisector will go through this midpoint

---------------------

Now we must find the slope of segment HI

H = (-4,2) = (x1,y1)
I = (2,4) = (x2,y2)
m = (y2 - y1)/(x2 - x1)
m = (4 - 2)/(2 - (-4))
m = (4 - 2)/(2 + 4)
m = 2/6
m = 1/3
Flip the fraction to get 1/3 ---> 3/1 = 3
Then flip the sign: +3 ----> -3

So the slope of the perpendicular bisector is -3

-----------------------

Use m = -3 which is the slope we found
and (x,y) = (-1,3), which is the midpoint found earlier
to get the following
y = mx+b
3 = -3*(-1)+b
3 = 3+b
3-3 = 3+b-3
0 = b
b = 0

So if m = -3 and b = 0, then y = mx+b turns into y = -3x+0 and it simplifies to y = -3x

So that confirms you have the right answer. I've also used GeoGebra to help confirm the answer (see attached)

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3 years ago