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3 years ago

PLEASE HELP me!! will give brainliest!! (:

Mathematics

2 answers:

Cloud [144]3 years ago

5 0

Answer:

The answer to your question is: Yes, x - 5 is a factor of the polynomial.

Step-by-step explanation:

To answer this question you need to divide the polynomial by the factor and if there is nothing left, they are factor.

x -5

x² + x -2

x-5 x³ -4x² -7x +10

-x³ + 5x²

x² - 7x

-x² + 5x

-2x + 10

+2x -10

0 0 These zeros tell us that the linear

expression is a factor of the polynomial

rjkz [21]3 years ago

3 0

Hey!

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Solution:

$f(x)= \frac{x^3-4x^2-7x+10}{x-5}\\f(x)= x^2 + x - 2\\f(x)= (x^2 + x - 2)(x-5)\\f(x)= (x+2) (x-1) (x-5)$

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

Answer:

$f(x) = (x+2) (x-1) (x-5)$

x - 5 is a factor of this polynomial.

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

Hope This Helped! Good Luck!

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PLEASE HELP ME QUICK PLEASE

Vikentia [17]

Answer:

Step-by-step explanation:

in the photo illustrated

3 0

3 years ago

Fred buys flags from a manufacturer for f dollars each and then sells the flags in his store for a 26%markup.

Mashutka [201]

Answer:

the markup is 1.26 (the amount added is .26)

1.26x (when x is the price Fred buys them for from the manufacturer)

1.26(40)

$50.40 is the retail price

50.4-40

$10.40 is the markup

Step-by-step explanation:

The 26% markup means that he is selling the flags 26% above the cost.

So, the cost would represent 100%, which is 1, and 26% of markup in decimal number is 0.26.

The price including the markup would be 1.26 as decimal or 126% as percentage.

The problem states that the cost is unknown, so we represent that with a variable x. The retail price would be 1.26x, which is 126% per flag.

Finally, if Fred paid $40 per flag, the actual retail price would be:

1.26($40)=$50.40.

With $10.40 of markup.

5 0

3 years ago

If one leg of a right triangle is 6 cm long, and the other leg is 8 cm long, how long is the triangles hypotenuse?!!

nekit [7.7K]

Answer:

approximately 9

Step-by-step explanation:

6 squared (36) plus 8 squared (64) is 84, and the square root of that is about 9

3 0

3 years ago

Read 2 more answers

There are 750 people at a football game. Out of this number, 320 are students. What percent of the people at the football game a

zlopas [31]

Answer:

I have no clue

Step-by-step explanation:

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6 0

3 years ago

Given a rectangle with length of (2x+9)cm and width of (3x+1)cm.Two squares, each with sides x cm is removed from the rectangle.

il63 [147K]

Answer: The length is 13cm and the width is 7cm

Step-by-step explanation:

For a rectangle of length L and width W, the area is:

A = W*L

In this case we have:

L = (2*x + 9) cm

W=(3*x + 1) cm

Then the area of the rectangle is:

A = (2*x + 9)*(3*x + 1) cm^2

A = (6*x^2 + 2*x + 27*x + 9) cm^2

A = (6*x^2 + 29*x + 9) cm^2

now we remove two squares with sides of x cm

The area of each one of these squares is (x cm)*(x cm) = x^2 cm^2

Then the area of the figure will be:

area = (6*x^2 + 29*x + 9) cm^2 - (2*x^2 ) cm^2

area = (4*x^2 + 29*x + 9) cm^2

Now we know that the area of this shape is 83 cm^2, then we need to solve:

83 cm^2 = (4*x^2 + 29*x + 9) cm^2

0 = (4*x^2 + 29*x + 9) cm^2 - 83 cm^2

0 = (4*x^2 + 29*x - 74) cm^2

Then we need to solve:

0 = 4*x^2 + 29*x - 74

Here we can use Bhaskara's equation, the solutions of this equation are given by:

$x = \frac{-29 \pm \sqrt{29^2 - 4*4*(-74)} }{2*4} = \frac{-29 \pm 45}{8}$

Then the two solutions are:

x = (-29 - 45)/8 = -9.25 (for how the length and width are defined, we can not have x as a negative number, then this solution can be discarded).

The other solution is:

x = (-29 + 45)/8 = 2

x = 2

Then the length and width of the rectangle are:

Length = (2*2 + 9)cm = 13 cm

Width = (3*2 + 1)cm = 7cm

4 0

3 years ago