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oksian1 [2.3K]
3 years ago
15

Plz help me with this

Mathematics
2 answers:
jekas [21]3 years ago
3 0

Answer:

10x^3 - 34x^2 + 33x - 7

Step-by-step explanation:

Multiply each term of the trinomial by each term of the binomial. Then combine like terms.

(2x^2 - 4x + 1)(5x - 7) =

= 10x^3 - 14x^2 - 20x^2 + 28x + 5x - 7

= 10x^3 - 34x^2 + 33x - 7

Y_Kistochka [10]3 years ago
3 0

Answer:  10x³ -34x² +33x - 7

<u>Step-by-step explanation:</u>

 (2x² - 4x + 1)(5x - 7)

= (5x - 7)(2x² - 4x + 1)

= 5x(2x² - 4x + 1)   -7(2x² - 4x + 1)

= 10x³ - 20x² + 5x    

<u>  +         -14x² + 28x - 7</u>

= 10x³ - 34x² + 33x - 7

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A group of 4 friends is playing cards. The deck has 70 cards. To start the game, the dealer makes a pile of 15 cards in the cent
ale4655 [162]

Answer:

14 cards

Step-by-step explanation:

70 - 15 = 55

55/4 = 13.75

Therefore, the highest number of cards someone is able to get is 14.

4 0
3 years ago
It would take an hour for plane A to meet plane B. If the distance between them will be 200 miles in 45 minutes, how far are the
masha68 [24]

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if you do the math you will get the same answer.

8 0
3 years ago
Find the value of k and x2<br> x^2+ 13x + k = 0, x1=-9
Anarel [89]

Given:

The quadratic equation is:

x^2+13x+k=0

x_1=-9

To find:

The value of k and x_1.

Solution:

We have,

x^2+13x+k=0                ...(i)

Putting x=-9, we get

(-9)^2+13(-9)+k=0

81-117+k=0

-36+k=0

k=36

Putting k=36 in (i), we get

x^2+13x+36=0

Splitting the middle term, we get

x^2+9x+4x+36=0

x(x+9)+4(x+9)=0

(x+9)(x+4)=0

x=-9,-4

Here, x_1=-9 and x_2=-4.

Therefore, the required values are k=36 and x_2=-4.

3 0
3 years ago
What is 9:09 minus 8:22
Anton [14]
I assume you're talking about time. 9:09 is 47 minutes after 8:22.
4 0
3 years ago
I need help really fast
antoniya [11.8K]

well 1+1=2 and 2+2=4 and 4+4=8 and 8+8=16 then..............................................ummm.....................................uhhhhhhhh...........................wow this is hard.......................................................................I have no clue sorry thats all i know

4 0
3 years ago
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