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Nesterboy [21]
3 years ago
7

the equation of the quadratic formula is represented by the graph y=a(x-3)2-1. what is the value of a?

Mathematics
2 answers:
kramer3 years ago
8 0

Answer:

2

Step-by-step explanation:

Nana76 [90]3 years ago
6 0

Answer:

The value of a is 2

Step-by-step explanation:

The parabola cuts the graph at (2,1) and is one of the solution of the quadratic equation.

Point (2,1) satisfies the equation.

We can find the value of a by putting the value of x and y

1=a(2-3)^2-1

Therefore, the value of a is 2

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After 3 hours, Ernie had travelled 195 miles. If he travels at a constant speed, how far will he have
Umnica [9.8K]

Answer:

x = 325 miles

Step-by-step explanation:

\frac{195}{3}  =  \frac{x}{5} \\ 3.x = 5.195 \\ 3x = 975 \\ x =  \frac{975}{3}   \\ x = 325 \: miles

7 0
3 years ago
A sequence U1, U2,U3...... is defined by the relation Un +1 = 2Un +5. if U1 =2, find U1​
Harlamova29_29 [7]

Correct question:

a sequence U1, U2,U3...... is defined by the relation U_{n +1} = 2U_n +5. if U1 =2, find U2​ and U3

Answer:

U2 = 9

U3 = 23

Step-by-step explanation:

Given sequence;

U_{n +1} = 2U_n +5

U1 = 2

U2 = ?

U_{n +1} = 2U_n +5\\\\U_2 = 2(U_1) + 5\\\\U_2 = 2(2) + 5\\\\U_2 = 4 + 5\\\\U_2 = 9

Solving for U3;

U_3 = 2(U_2) + 5\\\\U_3 = 2(9) + 5\\\\U_3 = 18 + 5\\\\U_3 = 23

3 0
3 years ago
How do I solve this equation?
Keith_Richards [23]

Answer:

y=\frac{7}{2}x+11

Step-by-step explanation:

To solve, we need to find the y-intercept (b). In order to find the y-intercept, we can plug in the slope and the (x,y) coordinate pair given to us into the equation to solve for the y-intercept:

y=mx+b

4=(-7/-2)*-2+b

4=14/-2+b

4=-7+b

Add 7 to both sides

b=11

Therefore the equation is:

y=\frac{7}{2}x+11 (note that the fraction is positive since the two negatives cancel out)

4 0
2 years ago
Donald's car gets about 30 miles per gallon. About how many miles can Donald drive on 9.2 gallons of gas? At $3.15 a gallon, abo
denis-greek [22]
<span>30x9.2= 276 miles 9.2x3.15=$28.98 So the car can drive 276 miles if you put $28.98 of gas in it.</span>
8 0
3 years ago
Which equation can pair with X- y=-2 to create a consistent and dependent system?
OLEGan [10]
D is the correct answer to this question
5 0
3 years ago
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