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Cerrena [4.2K]
3 years ago
9

Need help with homework

Mathematics
1 answer:
tatuchka [14]3 years ago
3 0
Tried my best to show you my steps

You might be interested in
Factor -7x3 + 21x2 + 3x - 9 by grouping. What is the resulting expression?
irga5000 [103]

Answer:

(x-3)(-7x^2+3) is the resulting expression after grouping

Step-by-step explanation:

Given:

-7x^3+21x^2+3x-9

Now taking common -7x^2 from 1st 2 numbers and and 3 common from last we get

-7x^2(x-3)+3(x-3)

Now taking x-3 common from both numbers we get

(x-3)(-7x^2+3) which is the final equation after grouping

8 0
3 years ago
What are the slope and the y-intercept of the graph of the linear function shown on the grid?
OverLord2011 [107]

Answer:

it looks like you already have the answer but the answer would be slope as -1/3 and y intercept as -6

6 0
2 years ago
Amy is planning the seating arrangement for her wedding reception. Each round table can sit 12 guests. The head table can sit th
storchak [24]

Answer:

23 tables.

Step-by-step explanation:

282- 8 = 274     274 divided by 12 = 22.8  round to the nearest whole number which is 23.

7 0
3 years ago
There is a bag filled with 4 blue and 5 red marbles.
gavmur [86]

1) first pick red 5/9 blue 4/9


2) second pick when red has been picked red now becomes 4/8, blue stays 4/8


2) Second pick when blue has been picked blue now becomes 3/8, red stays 5/8


Mind you, you only need both different colours so:

first pick red 5/9 x sec pick blue 4/8 = 20/72

and first pick blue 4/9 x sec pick red 5/8 = 20/72

add both up 20/72 + 20/72 = 40/72 = 5/9

6 0
3 years ago
Find the value of x?​
Arisa [49]

Answer:

x = 5

Step-by-step explanation:

x + 5 = \frac{1}{2}(x^{2} - x)    {Midpoint theorem}

2(x+ 5) = x² - x

2x + 10 = x² - x

x² - x - 2x - 10 = 0

x² - 3x - 10 = 0

x² - 5x + 2x - (5*2) = 0

x(x - 5) + 2(x - 5) = 0

(x -5)(x + 2) = 0

{x + 2 is ignored because measurement could not be in negative value}

x - 5 = 0

x = 5

5 0
2 years ago
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