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laila [671]
2 years ago
7

Find the remainder when f(x) = x3 − 14x2 + 51x − 22 is divided by x − 7. 36 8 −8 −36

Mathematics
2 answers:
vlabodo [156]2 years ago
3 0
This is by the rmeainder theorem f(7) 

= 7^3 - 14(7)^2 + 51(7) - 22

=  -8
jeyben [28]2 years ago
3 0

We are given polynomial function  f(x) = x^3-14x^2+51x-22.

We need to divide it by (x-7) to get the remainder.

Please see.. if we set x-7 equals 0, we get

x-7=0

x=7.

Plugging x=7 in the given polynomial, we get

f(7) = (7)^3-14(7)^2+51(7)-22

=343-686+357-22

=-8.

<h3>Therefore, remainder is −8.</h3>
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Complete the steps for solving 7 = –2x2 + 10x. Factor out of the variable terms. inside the parentheses and on the left side of
Mamont248 [21]

we have

7=-2x^{2} +10x

Factor the leading coefficient

7=-2(x^{2} -5x)

Complete the square. Remember to balance the equation by adding the same constants to each side

7-12.50=-2(x^{2} -5x+2.5^{2})

-5.50=-2(x^{2} -5x+2.5^{2})

Divide both sides by -2

2.75=(x^{2} -5x+2.5^{2})

Rewrite as perfect squares

2.75=(x-2.5)^{2}

Taking the square roots of both sides (square root property of equality)

x-2.5=(+/-)\sqrt{2.75}

Remember that

\sqrt{2.75}=\sqrt{\frac{11}{4}}= \frac{\sqrt{11}}{2}

x-2.5=(+/-)\frac{\sqrt{11}}{2}

x=2.5(+/-)\frac{\sqrt{11}}{2}

x=2.5+\frac{\sqrt{11}}{2}=\frac{5+\sqrt{11}}{2}

x=2.5-\frac{\sqrt{11}}{2}=\frac{5-\sqrt{11}}{2}

<u>the answer is</u>

The solutions are

x=\frac{5+\sqrt{11}}{2}

x=\frac{5-\sqrt{11}}{2}


5 0
2 years ago
Read 2 more answers
Jesse and Amir were assigned the same book to read. Jesse started reading on Saturday, and he is reading 30 pages a day. Amir di
Brrunno [24]

Answer:

balbla

Step-by-step explanation:

gbjldf;l g

dkfjmg

bgrdgdfgvfgfgbfgf gfff

3 0
2 years ago
A merry-go-round has a radius of 18 feet. If a passenger gets on a
bearhunter [10]

Answer:

The angle of rotation is 2.11 °

Step-by-step explanation:

Given as :

The radius of the round path = r = 18 feet

The length of the distance cover by wheel = l = 38 feet

Let The angle of rotation = Ф

Now, According to question

∵ length of the arc of a circle subtending an angle at center = Ф

So,

length of the distance cover by wheel = π × radius × \frac{\Theta }{180^{\circ}}

Since 180° = π radian

And π = 3.14

So, length of the distance cover by wheel = 180 °× radius ×  \frac{\Theta }{180^{\circ}}

i.e  l = r × Ф

Or,  Ф = \frac{l}{r}

Or,  Ф =  \frac{38 feet}{18 feet}

Or, Ф = 2.11 °

So, The angle of rotation =  Ф = 2.11 °

Hence, The angle of rotation is 2.11 °   Answer

6 0
2 years ago
PLEASE HELP ME!
dezoksy [38]
Thicknesses at different point are: <span>41, 38, 36, 29, 34, 44, 46, 43, 35, 40


In increasing order: 29, 34, 35, 36, 38, 40, 41, 43, 44, 46

Median = (38+40)/2 = 39m</span>

Median thickness is 39m
5 0
2 years ago
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Convert 12080 gallons per month into liters per hour
Anastaziya [24]

In this question , we have to convert 12080 gallons per month to liters per hour .

There are 3.78541 liters in 1 gallons , and there are 30 days in a month, and 24 hours in a day .

So to convert 12080 gallons per month, we have to multiply 12080 by 3.78541 and divide the result by the product of 30 and 24. THat is

12080 gallons per month = \frac{12080*3.78541}{24*30} liters / hour

= \frac{45727.75280}{720} liters/ hour = 63.51 liters/hour

5 0
2 years ago
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