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Alex Ar [27]
4 years ago
12

given the function f(x)=-x^2+8x+9, state whether the vertex the represents a maximum or minimum point for the function

Mathematics
2 answers:
elena-14-01-66 [18.8K]4 years ago
4 0
Should be a maximum as the negative in front of the first x signifies a negative (downward facing) parabola 
olga_2 [115]4 years ago
3 0
If you had
ax^2+bx+c
a is the leading term
when a>0, the parabola opens up and therfor has a minimum point and no max since it goes up infinitely

when a<0, the parabola opens down and therefor has a maximum point and not min since it goes down infinitely

-x^2+8x+9
-1<0
opens down
has max
vertex=max
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Complete the following conversions. i) 1 mm = m ii) mm = 1 m iii) 1 cm = m iv) cm = 1 m v) 1 km = m vi) km = 1 m vii) 1 cm = mm
Gelneren [198K]

The unit conversion for the given values are explained below.

<h3>What is unit conversion?</h3>

Unit conversion is the process of changing a quantity's measurement between different units, frequently using multiplicative conversion factors.

The following measurements: length, weight, capacity, temperature, and speed are all measured in units.

Some basic unit conversions are-

  • 1 Km = 1000 m
  • 1 m = 100 cm
  • 1 m = 1000 mm
  • 1 cm = 10 mm

There are two methods to convert the units

  1. To convert smaller unit into larger divide the number by conversion factor.
  2. To convert larger value into smaller value multiply by the conversion factor.

The unit conversion for the following factors are-

i) 1 mm = _ m

Here, conversion is from smaller to larger. So, divide by conversion factor.

  1 mm = (1/100)m

ii) _ mm = 1 m

Here, conversion is from larger to smaller. So, multiply with conversion factor.

  1000 mm = 1 m

iii) 1 cm = _ m

Here, conversion is from smaller to larger. So, divide by conversion factor.

   1 cm = (1/100)m

iv) _ cm = 1 m

Here, conversion is from larger to smaller. So, multiply with conversion factor.

  100 cm = 1 m

v) 1 km = _m

Here, conversion is from larger to smaller. So, multiply with conversion factor.

  1 km = 1000 m.

vi) _ km = 1 m

Here, conversion is from smaller to larger. So, divide by conversion factor.

(1/1000) km = 1 m.

vii) 1 cm = _mm

Here, conversion is from larger to smaller. So, multiply with conversion factor.

   1 cm = 10 mm

viii) _cm = 1 mm

Here, conversion is from smaller to larger. So, divide by conversion factor.

   (1/10) cm = 1 mm.

To know more about the easy way to convert units, here

brainly.com/question/141163

#SPJ4

 

5 0
2 years ago
Sasha’s daily tips this work week were $43, $32, $65, $88, $50, and $72. Is Sasha correct in thinking that the mean accurately r
mezya [45]

Answer:

Yes, Sasha is correct. The mean amount she makes is $58.33 in a day.

Step-by-step explanation:

Given that Sasha’s daily tips this work week were $43, $32, $65, $88, $50, and $72

Let us arrange in ascending order

32, 43,50,65,72,88

There are 6 entries hence 3rd and 4th are middle entries

Median = (50+65)/2=115/2=57.5

Sum of all entries = 350

No of entries =6

Mean amount = average = sum/6

=350/6

=58.33

Hence mean = 58.33

Out of 4 options we get I option only right

Yes, Sasha is correct. The mean amount she makes is $58.33 in a day.

8 0
3 years ago
Please me in the math
Yuri [45]

Answer:

I'm sorry I'm not good at math

Step-by-step explanation:

sorry

4 0
3 years ago
Read 2 more answers
Combine any like terms in the expression. If there are no like terms, rewrite the expression.
AlladinOne [14]
Im correct ok ik i am

8 0
3 years ago
Can you guys help me with the following problems in the U.S. Customary unit of measurement?
MrMuchimi
34. 
4 cups = 1 quart
4 quarts = 1 gallon
- 8 cups x 7 days = 56 cups
56 cups = 3.5 gallons

33. 
16 ounces = 1 lb
Colleen started off with 70 ounces after she takes some off she has 56 so, 
70 - 56 = 14(ounces she took off)




7 0
4 years ago
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