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Karolina [17]
3 years ago
8

How do you write this quadratic equation using substitution

Mathematics
2 answers:
Arlecino [84]3 years ago
7 0

Answer:

u^2 +7u -8=0  where u = 3x+2

Step-by-step explanation:

(3x+2)^2 + 7(3x+2) - 8=0

Let 3x+2 = u

u^2 +7u -8=0

lara [203]3 years ago
5 0
Idk because it hard
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Need your Help please!!
lianna [129]

Answer:

4.

f(x) = (x + 2)(x + 1)(x - 3) = x^3 - 7·x - 6

a = 0 ; b = -7 ; c = -6

5.

a = -3 ∧ b = -2 ∧ c = -3


3 0
3 years ago
Dustin is buying carpet for the living room. How many square feet of carpet will he need to buy?
rusak2 [61]

Complete Question:

Dustin is buying carpet for the living room. If the length of the room is 21 ft and the width

is 11 ft, how many square feet of carpet does he need to buy?

Answer:

231 ft²

Step-by-step explanation:

==>GIVEN:

Length of room (L) = 21 ft

Width of room (W) = 11 ft

==>REQUIRED:

Square feet of carpet to be bought = area of the rectangular room

==>SOLUTION:

The room to be covered with carpet is rectangular in shape. In order to ascertain the square feet of carpet to be bought, we need to calculate the area of the room by using the formula for area of rectangle.

Thus, area of rectangle (A) = Length (L) × Width (W)

A = 21 × 11

A = 231 ft²

Square feet of carpet to be bought = 231 ft²

5 0
3 years ago
There are eight people competing in the track meet this weekend. They are competing for 1st, 2nd, and 3rd place ribbons. How man
malfutka [58]

Answer:

Option C

Step-by-step explanation:

Assuming P represents the number of outcomes, n the number of competitors and r the number of places to be awarded....

P = n! / ( n - r )!\\P = 8! / ( 8 - 3 )!\\P = 8! / 5!\\\\Algebra, P = 336 \\Solution = Option C

There are 336 different possible ways for the winners to be chosen.

<u><em>Hope that helps!</em></u>

5 0
3 years ago
I need some help on this
Len [333]

Answer:

Step-by-step explanation:

Point of intersections of the graph with x-axis are not clear.

Let these points are x = -a, -b and c

Therefore, function representing the graph will be,

f(x) = p(x + a)(x + b)(x - c)

Since, this graph crosses y-axis at (0, -6),

f(0) = p(0 + a)(0 + b)(0 - c) = -6

-pabc = -6

p = \frac{6}{abc}

Therefore, equation of the given function will be,

f(x) = \frac{6}{abc}(x+a)(x+b)(x-c)

3 0
3 years ago
I dont feel like doing this can you guys help
kirza4 [7]

Answer:

See Below

Step-by-step explanation:

1) 180 ft / 6 sec

You can divide both the numerator and denominator by 6:

30 ft /  1 sec

2) 86 mi/5 hr

You can divide 86 by 5:

17.2 mi / hr

3)  83 mi / 5hr

Same as above ^

16.6 mi / hr --> 16.6 mph

4) 93 feet / 5 sec

Same as above ^^

18.6 ft/ 1 sec

5) 150 mi / 4 hr

Same as above ^^^

37.5 mi / 1 hr --> 37.5 mph

8 0
3 years ago
Read 2 more answers
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