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nikdorinn [45]
2 years ago
7

Factor. 9x^2−49y^2Enter your answer in the box

Mathematics
1 answer:
klemol [59]2 years ago
7 0

Answer:

3x-7y

Step-by-step explanation:

9x^2 - 49y^2

find the square root of a values

=3x-7y

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A speed limit of 100 kilometers per hour is approximately equal to 62mph. write an equation relating kilometers per hour to mile
aleksandr82 [10.1K]

Answer:

3

Step-by-step explanation:

IT DOES it

4 0
2 years ago
The vertex of the parabola below is at the point (1,3), and the point (2,6) is
Inessa05 [86]

Answer:

B. y=3(x-1)2 + 3

Step-by-step explanation:

Given that

vertex of the parabola is at the point (1,3)

let's verify, if the option B is the correct equation of the parabola.

y=3(x-1)^2 + 3\\ \\y=3(x^2+1-2x) + 3\\\\y=3x^2+3-6x + 3\\\\y=3x^2-6x + 6....Eq1

comparing to standard equationof parabola (standard quadratic equation), we get

a=3, b=-6 and c=6

to find the vertex we use formula for x- coordinate as x=-b/2a

x=-(-6)/2(3)\\\\x=6/6\\x=1

to find y put x=1 in the Eq1, we get

y=3(1)^2-6(1)+6\\\\y=3-6+6\\\\y=3

vertex =(x,y) = (1, 3)

thus vertex of the parabola from the equation y=3(x-1)2 + 3 is (1,3), thus verified

7 0
3 years ago
Lois has 36 colored pencils. They are either green or red. For every green pencil, Lois has 3 red pencils. How many red pencils
SashulF [63]
Lois has 9 red pencils because 9x4=36
8 0
3 years ago
What is correct answer to -5-(-8)=
tino4ka555 [31]

Answer:

3

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
13.6% complete This is a Single Choice Question; skip ahead to question content A B C D E Confirm Difficulty Level: Moderate Som
Veronika [31]

Answer

about 4 hours and 20 minutes

Step-by-step explanation:

200 divided by 60 is 3.33 or 3 hours and 20 minutes, plus the extra hour

8 0
3 years ago
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