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Ostrovityanka [42]
3 years ago
14

What is the domain for y= -4x^2+7x+11?

Mathematics
2 answers:
liubo4ka [24]3 years ago
8 0

Answer:

All real numbers or (negative infinity, positive infinity)

Step-by-step explanation:

The equation given is a parabola. A parabola has infinite values of x inputs that produce an infinite amount of y outputs. All values of x produce an output, so any number of x would work.

tamaranim1 [39]3 years ago
8 0

Answer:

<h2>(-∞,+∞)</h2>

Step-by-step explanation:

(-∞,+∞), since any quadratic equation graph (quadratic parabola) has only range restrictions (the min and max), but the for any x value there is a y value.

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Write an equation to represent the following equation:
BabaBlast [244]

"60 is..." can be translated with 60=\ldots

"5 times as great as k [/tex] means 5k

So, the equation is

60=5k

To solve for k, divide both sides by 5:

\dfrac{60}{5} = \dfrac{5k}{5}

Which leads to

k=12

5 0
3 years ago
Fiona, Dan and Stephen share £66 in a ratio 1:3:2. How much money does each person get?
FinnZ [79.3K]

Answer:

£11, £33, £22

Step-by-step explanation:

F:D:S= 1:3:2

  • x+3x+2x= 66
  • 6x=66
  • x= £11

Fiona  £11

Dan £33

Stephen £22

4 0
3 years ago
A car drives at a speed of 90 km/h for 2 hours and 20 minutes.<br> How far does the car drive?
N76 [4]

Answer:

210 KM

Step-by-step explanation:

first 20minutes is 1/3 of an hour

20/60=1/3 hour

how far does the car drive =time *speed

=2 1/3 hour *90= 210 km

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5 0
4 years ago
If the function y = sinx is transformed to y = 3 sine (two-thirds x), how do the amplitude and period change?
icang [17]

Answer:

Amplitude increases and the period decreases

Step-by-step explanation:

Here, we are to compare amplitude change and period change

The first equation is;

y = sin x

The second is

y = 3 sine (2/3)x

Generally, the equation of a sine graph can be written as;

y = a sin (bx + c)

where a represents the amplitude and b refers to the period

In the first equation , a = 1 while in the second , a = 3 ; This shows an amplitude increase

In the first equation, b = 1 while in the second equation b = 2/3; this shows a period decrease

7 0
3 years ago
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Consider a tank with a capacity of 1000 ` and initially contains 400 ` of solution
tatuchka [14]

Answer:

Not sure but it's A

Step-by-step explanation:

8 0
3 years ago
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