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r-ruslan [8.4K]
2 years ago
14

Find the maximum value of the function f(x) = -1.9x^2 + 24x – 71.3 to the nearest hundredth.

Mathematics
1 answer:
d1i1m1o1n [39]2 years ago
4 0
Being that the system is quadratic—with parabola opening downwards—you’re going to need to find the vertex. You can find the x coordinate of the vertex with -b/2a . Then plug in for x to find the y coordinate…
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Three times a certain number is 21. What is the number?
Goshia [24]

Answer:

The answer is 7

Step-by-step explanation:

an easier way to think of it is 21 divided by 3, which again, is 7.

Hope That Helps!

7 0
3 years ago
Read 2 more answers
Find the length of each bolded ARC round to the nearest hundredth 5 mm and 232 Help ASAP
mart [117]

9514 1404 393

Answer:

  20.25 mm

Step-by-step explanation:

Arc length is given by the relation ...

  s = rθ

where r is the radius and θ is the central angle in radians.

There are π radians in 180°, so the arc length is ...

  s = (5 mm)(232°×π/180°) = 20.25 mm

The arc length is about 20.25 mm.

4 0
3 years ago
What is 18 expressed as a percent?
Vladimir79 [104]
Here is your answer:

Your answer is 18%

Reason: That's because 18 has a invisible decimal point:

18.

Then you move to decimal and change it into a %

Which will make it 18%

Your answer is...
18%
3 0
3 years ago
Read 2 more answers
Find the equation of the straight line that has slope m = -6 and passes through point (2, -7)
MAXImum [283]

Answer:

y

=

3

2

x

+

1

Explanation:

To find the slope  

(

m

)

of the straight line that passes through two points  

(

x

1

,

y

1

)

and  

(

x

2

,

y

2

)

apply:

(

y

1

−

y

2

)

=

m

(

x

1

−

x

2

)

In this example our two points are  

(

0

,

1

)

and  

(

2

,

4

)

Hence:  

(

1

−

4

)

=

m

(

0

−

2

)

−

3

=

−

2

m

→

m

=

3

2

The equation of a straight line in slope  

(

m

)

and intercept  

(

c

)

form is:

y

=

m

x

+

c

In this example:

y

=

3

2

x

+

c

Since the point  

(

0

,

1

)

is on this line  

→

1

=

0

+

c

Hence,  

c

=

1

∴

y

=

3

2

x

+

1

is our required straight line.

Step-by-step explanation:

3 0
3 years ago
Please help me with this
shutvik [7]

Answer:

1) 151.29 | 2) 413 km | 3) 75 cm

Step-by-step explanation:

1) 12.3 x 12.3 = 151.29 in

2) 17.5 x 23.6 = 413 km

3) 15 x 5 = 75 cm

4 0
3 years ago
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