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Katena32 [7]
3 years ago
9

Multiply. (2x2 – 3x)(3x2 + 2x - 1)

Mathematics
1 answer:
exis [7]3 years ago
8 0

Answer:

-6x^{2} –7x + 20

Step-by-step explanation:

(2x2 – 3x)(3x2 + 2x – 1)

(4 – 3x)(2x + 5)

(4*2x) + (4*5) + (–3x*2x) + (–3x*5)

8x + 20 -6x^{2} –15x

-6x^{2} –7x + 20

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I need help with this ! ❤️
Arada [10]

Answer:

The correct answer is: (x,y)↦(x+ 8 ,y+ 16)

Hoped I helped

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3 years ago
Tara read 80 pages of a book in 3 hours. At this rate, how
Kitty [74]

Answer: it would take her 15 hours to read 400 pages

Step-by-step explanation: 400 devided by 80 is 5 and 5 x 3 = 15 hours

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¿Cuál de los siguientes puntos no pertenece a la función cuadrática f(x) = 1-x^2 ?
dusya [7]

Answer:

<h2>A. (0,1)</h2>

Step-by-step explanation:

The question lacks the e=required option. Find the complete question below with options.

Which of the following points does not belong to the quadratic function

f(x) = 1-x²?

a.(0,1) b.(1,0) c.(-1,0)

Let f(x) = 0

The equation becomes 1-x² = 0

Solving 1-x² = 0 for x;

subtract 1 from both sides;

1-x²-1 = 0-1

-x² = -1

multiply both sides by minus sign

-(-x²) = -(-1)

x² = 1

take square root of both sides;

√x² = ±√1

x = ±1

x = 1 and x = -1

when x = 1

f(x) = y = 1-1²

y = 1-1

y = 0

when x = -1

f(x) = y = 1-(-1)²

y = 1-1

y = 0

Hence the coordinate of the function f(x) = 1-x² are (±1, 0) i.e (1, 0) and (-1, 0). The point that does not belong to the quadratic function is (0, 1)

3 0
3 years ago
The temperature, t, in degrees celsius, in a warehouse changes according to the function t(h) = 18 + 4sin(pi/12 (x = 8)).
egoroff_w [7]

The rate at which the temperature is changing at 9 a.m. is 19.03 degrees Celsius per hour

<h3>How to determine the rate at 9a.m?</h3>

The function is given as:

t(h) = 18 + 4\sin(\pi/12(x - 8))

9a.m is 9 hours since midnight.

This means that

x = 9

So, we have:

t(h) = 18 + 4\sin(\pi/12(9 - 8))

Evaluate

t(h) = 18 + 4\sin(0.262)

Evaluate the expression

t(h) = 19.03

Hence, the rate at which the temperature is changing at 9 a.m. is 19.03 degrees Celsius per hour

Read more about rates at:

brainly.com/question/25545513

#SPJ1

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