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Vlad1618 [11]
3 years ago
13

PLZ HELP ME! I NEED HELP ON THIS

Mathematics
1 answer:
dmitriy555 [2]3 years ago
3 0

Answer: D (-/ 13 - -/11) those are supposed to be square root signs lol^^

Step-by-step explanation:

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Factor 2x^4 + 2x^3 - x^2 - x
MAVERICK [17]
2x^3(x+1)-x(x+1)
(2x^3-x)(x+1)
x(2x^2-1)(x+1)
8 0
3 years ago
Solve for c; a/b+c=d/c
Eduardwww [97]

To solve for c, you need to get c onto one side of the equation, or make it c=__. So what I would do first is subtract a/b from both sides

a/b + c = d/c

-a/b

a/b - a/b + c = d/c - a/b

c = d/c-a/b

8 0
4 years ago
The length of a rectangle is 10 feet longer than it is wide. If each side is increased 10 feet, then the area is multiplied by 2
harina [27]

Answer:

The with and length of the original rectangle are:

width: 20 ft

Length: 30 ft

Step-by-step explanation:

Lets check

Yes, 30 is 10 longer then 20,

the area of the original is 600

if it was 40 and 30 then it would equal 1200

6 0
3 years ago
Produce graphs of f that reveal all the important aspects of the curve. Then use calculus to find the following. (Enter your ans
zubka84 [21]
<span>a) Intervals of increase is where the derivative is positive
b) </span> <span>Intervals of decrease is where the derivative is negative. </span> 

c) <span>Inflection points of the function are where the graph changes concavity that is the point where the second derivative is zero </span>

<span>d)
Concave up- Second derivative positive </span>
<span>Concave down- second derivative negative </span>

f(x) = 4x^4 − 32x^3 + 89x^2 − 95x + 31 
<span>f '(x) = 16x^3 - 96x^2 + 178x - 95 </span>
<span>f "(x) = 48x^2 - 192x + 178 </span>

<span>By rational root theorem the f '(x) has one rational root and factors to: </span>
<span>f '(x) = (2x - 5)*(8x^2 - 28x + 19) </span>

<span>Using the quadratic formula to find it's two irrational real roots. </span>
<span>The f "(x) = 48x^2 - 192x + 178 only has irrational real roots, use quadratic formula which will be the inflection points as well.</span>

4 0
4 years ago
Read 2 more answers
What is the rate of change for both of these tables. 25 pts
Rudiy27

Answer:

For the table on the left the rate of change is  22.8

For the table on the left the rate of change is -2

Step-by-step explanation:

The range of change is the slope. The slope can be found with the following formula:

m=\frac{y_2-y_1}{x_2-x_1}

<u>For the table on the left</u>

Choose two points. In this case you can choose (-1,-24), (4,90)

You can say that:

y_2=-24\\y_1=90\\\\x_2=-1\\x_1=4

Substituting these values into the formula, you get:

m=\frac{-24-90}{-1-4}\\\\m=22.8

<u>For the table on the right</u>

Choose two points. You can choose (3,-6), (-6,12)

You can identify that:

y_2=-6\\y_1=12\\\\x_2=3\\x_1=-6

Substituting these values into the formula, you get:

m=\frac{-6-12}{3-(-6)}\\\\m=-2

4 0
3 years ago
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