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grin007 [14]
3 years ago
13

___ x 4 = 12 ___ x 5 = 20 ___ x 2 = 10

Mathematics
1 answer:
RideAnS [48]3 years ago
4 0

Answer:

3 x 4 = 12

4 x 5 = 20

5 x 2 = 10

Step-by-step explanation:

3 + 3 + 3 + 3 = 12

3 four times equals 12

This is the same for the others

4 + 4 + 4 + 4 + 4 = 20

Four 5 times equals 20

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F= z-g/n<br> solve for z
Vera_Pavlovna [14]
Z= F+ (g/n) (you’re welcome)
7 0
3 years ago
Consider the equation below. f(x) = 2x3 + 3x2 − 336x (a) Find the interval on which f is increasing. (Enter your answer in inter
Vaselesa [24]

We have been given a function f(x)=2x^3+3x^2-336x. We are asked to find the interval on which function is increasing and decreasing.

(a). First of all, we will find the critical points of function by equating derivative with 0.

f'(x)=2(3)x^{2}+3(2)x^1-336

f'(x)=6x^{2}+6x-336

6x^{2}+6x-336=0

x^{2}+x-56=0

x^{2}+8x-7x-56=0

(x+8)-7(x+8)=0

(x+8)(x-7)=0

x=-8,x=7

So x=-8,7 are critical points and these will divide our function in 3 intervals (-\infty,-8)U(-8,7)U(7,\infty).

Now we will find derivative over each interval as:

f'(x)=(x+8)(x-7)

f'(-9)=(-9+8)(-9-7)=(-1)(-16)=16

Since f'(9)>0, therefore, function is increasing on interval (-\infty,-8).

f'(x)=(x+8)(x-7)

f'(1)=(1+8)(1-7)=(9)(-6)=-54

Since f'(1), therefore, function is decreasing on interval (-8,7).

Let us check for the derivative at x=8.

f'(x)=(x+8)(x-7)

f'(8)=(8+8)(8-7)=(16)(1)=16

Since f'(8)>0, therefore, function is increasing on interval (7,\infty).

(b) Since x=-8,7 are critical points, so these will be either a maximum or minimum.

Let us find values of f(x) on these two points.

f(-8)=2(-8)^3+3(-8)^2-336(-8)

f(-8)=1856

f(7)=2(7)^3+3(7)^2-336(7)

f(7)=-1519

Therefore, (-8,1856) is a local maximum and (7,-1519) is a local minimum.

(c) To find inflection points, we need to check where 2nd derivative is equal to 0.

Let us find 2nd derivative.

f''(x)=6(2)x^{1}+6

f''(x)=12x+6

12x+6=0

12x=-6

\frac{12x}{12}=-\frac{6}{12}

x=-\frac{1}{2}

Therefore, x=-\frac{1}{2} is an inflection point of given function.

3 0
3 years ago
A paper company needs to ship paper to a large printing business. The paper will be
Kryger [21]

Answer:

x = 8

y = 11

Step-by-step explanation:

Total small box weight  = 50x    [x being the number of small boxes]

Total large box weight = 80y     [y being the number of large boxes]      

Total boxes = x+y = 19

Total weight = 1280

<em>Determine x and y.</em>

<u>You know 2 equations. One for weight and another for number of boxes each.</u>

  • 1280 = 50x +80y
  • x+y = 19

<u>Rewrite second equation:</u>

x+y=19

y=19-x

<u>You have to plug in one into another.</u>

1280 = 50x + 80(19-x)

<u>Solve for x</u>

1280 = 50x + 1520 - 80x

-240 = -30x

x = 8

<u>Solve for y by plugging in x into one of the equations:</u>

8+y = 19

y = 11

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2 years ago
What is the following product? Square root 30 times sqrt 10
xxTIMURxx [149]

Answer:

17.321

Step-by-step explanation:

7 0
3 years ago
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Subtraction with Real Numbers<br> 7-8-(-5)-1=
Cerrena [4.2K]

Answer:

The answer is 3

Step-by-step explanation:

7-8-(-5)-1

-1-(-5)-1

-1 + 5 - 1

4 - 1

3

6 0
3 years ago
Read 2 more answers
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