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3 years ago

I need help please will give brainliest

Mathematics

1 answer:

EleoNora [17]3 years ago

6 0

Answer:

1.) True, because it says three times so you know the x belongs there. Also, you have to follow the order of what the problem says.

2.) False, because it is not in the order of how the problem states it.

3.) False, because if you transfer the fraction to a decimal you get 4.333333. It's not valid.

4.) True, because if you do 7 × 3, it equals to 21. So, 21 - 17 = 4. And Jenny is supposed to have 4 quilts.

Hope it helps! :D

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The axis of symmerty for the graph of the function f(x) = 1/4x^2 + bc +10 is x=6 what is the value of b

zysi [14]

Completing the square gives

$\dfrac14x^2+bx+10=\dfrac14(x^2+4bx+40)=\dfrac14(x^2+4bx+4b^2+40-4b^2)$

$\implies\dfrac14x^2+bx+10=\dfrac14(x+2b)^2+10-b^2$

At the point on the graph along the axis of symmetry, the squared term vanishes, so that when $x=6$ , we have $x+2b=0$ . So

$6+2b=0\implies 2b=-6\implies\boxed{b=-3}$

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3 years ago

Need help with the picture

Katen [24]

Answer:

E F D C A B

Step-by-step explanation:

thats the order the letters go in

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3 years ago

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Simplify expression –5.6 + 8.2

Vedmedyk [2.9K]

2.6 because you substract

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3 years ago

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Consider the following problem: a farmer with 750 feet of fencing wants to enclose a rectangular area and then divide it into fo

nlexa [21]

Answer:

14,062.5ft^2

Step-by-step explanation:

A farmer has a given length of fencing. Since this fencing is used to enclose a rectangular area, before it is then divided it into four pens using the same provided fencing material. This will definitely lead to five lengths of fencing which come along one side of the rectangle to form four pens.

Let us assume that the length of the each of the five sides be xft.

Then let the length of each of the two sides in the be yft.

Since the total length of fencing available is 750 feet.

Then we can have an equation of such:

5x+2y=750

Making y the subject

2y = 750-5x

y = 750-5x/2. ........1

The area of the rectangular region is given by:

A = xy. ......... 2

Combining (1) in (2) to find the area

A(x)= x. (750−5x)/2

=750x−5x^2/2 ........... (*)

Going by the means of first diffential calculus.

A(x)=750x−5x^2/2

A'(x) = 750-10x/2

Setting A'(x) = 0

750-10x/2 = 0

750-10x = 2×0

750-10x = 0

750= 10x

x = 750/10

x = 75

Now that we have x = 75

We can now substitute into equation (*)

A(x) = 750×75-5×75^2/2

= (56250-28125)/2

= 28126/2

= 14062.5

Hence the rectangular region of maximum area is

14062.5ft^2

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3 years ago

In two or more complete sentences, describe how to find the interval(s) where the function is increasing and how interval notati

Novay_Z [31]

Answer:

(-5,0)

Step-by-step explanation:

In case when you tracking the finger across the line, at which there is an increase or decrease in y axis so this is we called intervals. Moreover, the interval notation is also necessary as it depicts the beginning and ending points. In this, the first number denotes the minimum number while the second number denotes the maximum number

For Decreasing:

(-8,-5)

(4,8)

For Increasing:

(-5,0)

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4 years ago