3 years ago

Identify the values of a, b and c in the quadratic function y = 3x^2 −5x +2

Mathematics

2 answers:

olga2289 [7]3 years ago

7 0

A quadratic function is written in terms of y = ax^2 + bx + c

Using the given equation:

a= 3, b=-5, c =2

algol133 years ago

4 0

Example : the answer

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Please help!! Write the sum using summation notation, assuming the suggested pattern continues. -9 - 4 + 1 + 6 + ... + 66

fiasKO [112]

$r=-4-(-9)=-4+9=5 \\ \\ a_{1}=-9 \\ \\ a_{n}=66 \\ \\ a_{n}=a_{1}+(n-1)r \\ \\ -9+5(n-1)=66 \\ \\ -9+5n-5=66 \\ \\ 5n-14=66 \\ \\ 5n=80 \\ \\ n=16 \\ \\ S_{n}= \frac{a_{1}+a_{n}}{2} *n \\ \\ S_{n}= \frac{-9+66}{2}*16=57*8=456$

4 0

2 years ago

Mike is training for a cross country bike ride. He rides his bike 60 miles, 66 miles, 70 miles, 60 miles, and 51 miles on the fi

forsale [732]

Answer:

47 miles

Step-by-step explanation:

The formula for Mean = Sum of values/Number of values

Number of values is 6

From the above question, we are only given 5 values,

The 6th value is represent as= x

Hence,

60 miles + 66 miles+ 70 miles+ 60 miles+ 51 miles + x miles/6 = 59 miles

Cross Multiply

60 miles + 66 miles+ 70 miles+ 60 miles+ 51 miles + x miles = 6 × 59 miles

307 miles + x miles = 354 miles

x miles = 354 miles - 307 miles

x miles = 47 miles

Therefore, the number of miles he need to run on day 6 is 47 miles

8 0

2 years ago

There were some people no a boat 26 people got off the boat at the first dock 22 people got off the boat now there ate 74 people

kramer

Answer:

Step-by-step explanation:

Let the initial number of people on the boat be x:

x - 26 - 22 = 74

x -48 = 74

x = 74 + 48

x = 122

Answered by G a u t h m a t h

7 0

2 years ago

I thought of a number. My number doubled is 20 bigger than 200. Find my number.

Illusion [34]

Answer:

110

Step-by-step explanation:

200+20=220

220/2=110

5 0

3 years ago

Read 2 more answers

What is the standard form of this expression? (4y-9)(2y-3)

Setler [38]

Answer:

-22y+27

Step-by-step explanation:

(4y-9)(2y-3)

<u>Distribute:</u>

8y-12y-18y+27

<u>Combine like terms:</u>

8y-12y-18y=-22y

-22y+27

3 0

2 years ago