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Lemur [1.5K]
3 years ago
9

Find the sum of (x^2+6x-5)+(2x^2+15)

Mathematics
1 answer:
defon3 years ago
5 0

Answer:

3x²+6x+10 is your answer

Step-by-step explanation:

(x^2+6x-5)+(2x^2+15)

open bracket

x²+6x-5+2x²+15

add or subtract common

3x²+6x+10

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Please help ? i have no clue what i’m doing
Anit [1.1K]

Step-by-step explanation:

2( l + w ) = perimeter of triangle

P = 2( 10+8 )

p= 2(18)

p= 36cm

Circle = pie (r) + d. recall d = 2r

P= 3.142 (4) + 8

P= 20.57~

so therefore= , 36 + 2(20.57)= 77.14cm ~ to the nearest tenths

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3 years ago
Two sides of a triangle have the following measures. Find the range of possible measures for the third side.
Bond [772]

Answer:

x=14.3

Step-by-step explanation:

its the Pythagorean theorem

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2 years ago
Write an equation in slope intercept form for the graph of the line.​
olganol [36]

Answer:

  • y = 2x - 3

Step-by-step explanation:

<u>Slope intercept form:</u>

  • y = mx + b, where m - slope, b - y-intercept

<u>Take two points from the graph:</u>

  • (2, 1) and (3, 3)

<u>Find the slope:</u>

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<u>Find the y-intercept using point (2, 1) and the equation above:</u>

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2 years ago
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Tems11 [23]
What’s the whole question???!
7 0
3 years ago
Help ASAP!!!! Thanks
Tema [17]

Answer:

No DB is not a perpendicular bisector of AC

Step-by-step explanation:

This is because as AC is a straight line it's angle degree is 180 which when bisected by DB becomes,

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To make it a perpendicular bisector but

<BDC is not equal to <NDA is not equal to 90°.

Hence, DB is not a perpendicular bisector of line AC.

8 0
2 years ago
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