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Natalka [10]
3 years ago
6

The equation for the graph of A is

Mathematics
1 answer:
jekas [21]3 years ago
4 0

Answer:

A: y = x²

B: y = -x

C: y = x

D: y = -x²

Step-by-step explanation:

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Which of the following is the equation of a line in slope intercept from a line with the slope of 2/3 and Y intercept at 0,-2
Sphinxa [80]

Answer:

y= 2/3x - 2

Step-by-step explanation:

b is were the line crosses the y intercept so its -2

and the slope is 2/3x

hope this helps:)

8 0
3 years ago
Select all of the variables that are solutions of x^2 +20=12x
IrinaK [193]

Find all solutions:

x^2 +20=12x\\x^2-12x+20=0\\

use quadratic formula to get the following two solutions:

x_1 = 2\\x_2 = 10


4 0
3 years ago
Use the three steps to solve the problem. Express the answers using decimals.
poizon [28]
We let
x be the time it took John to get to his uncle's
y be the time it took John to get back from his Uncle's

So,
x + y = 12

And making use of the given velocities
20x = 30y
x = 3/2 y

Substituting to the first equation
3/2 y + y = 12
y = 4.8 h
Substituting to either of the equations
x = 7.2 h
7 0
3 years ago
The 6th term of a gp is -2/29,and it's first term is 18.what is the common ratio​
Ymorist [56]

Answer:

-0.329

Step-by-step explanation:

The formula for Geometric ratio is

an = ar^n - 1

Where

a = First term = 18

r = Common ratio = ?

n = Number of term= 6

Hence

a6 = 18 × r^6-1

From the question

a6 = -2/29

Hence:

-2/29 = 18 × r^6-1

-2/29 = 18 × r⁵

Divide both sides by 18

-2/29 ÷ 18 = 18 × r⁵/18

-2/29 × 1/18 = r⁵

r⁵ = -1/261

Take the fifth root of both sides

⁵√(r⁵) = ⁵√(-1/261)

r = -0.3286032834

Approximately = -0.329

Therefore, Common ratio = -0.329

7 0
3 years ago
What is the axis of symmetry of the function f(x)= -(x+9)(x-21)
tamaranim1 [39]

Answer:

The axis of symmetry is x = 6

Step-by-step explanation:

To find this, first find the two x-intercept values and then take the average. This will always be the line of symmetry.

x + 9 = 0

x = -9

x - 21 = 0

x = 21

Now take the average of these two numbers.

(-9 + 21)/2

12/2

6

5 0
3 years ago
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