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Ksju [112]
3 years ago
6

N is the midpoint of AC ; AN = 4x - 7 and NC = 5x - 15 Find x=

Mathematics
1 answer:
xz_007 [3.2K]3 years ago
4 0

Answer:

x = 8

Step-by-step explanation:

AN = NC,

4x - 7 = 5x -15,

-7 = x -15,

8 = x

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The sum of three consecutive integers is 120. What are the integers.
bezimeni [28]
1. Three consecutive integers: x, x+1, x+2, such that:
x + x + 1 + x + 2 = 120
3 x + 3 = 120
3 x = 117
x = 117:3= 39
The integers are: 39,40,41.
2.
 x + x + 2 = x +1 +21
 2 x - x = 22 - 2
 x = 20
The integers are: 20,21,22.
3. Four consecutive even integers: x, x+2, x+4, x+6
4 ( x + x + 2 ) = 7 (x + 6 ) - 8
8 x + 8 = 7 x + 42 - 8
8 x - 7 x = 34 - 8
x = 26
The integers are: 26, 28, 30 , 32. 
6 0
4 years ago
Two angles in a triangle have measures of 20' and 50'
pav-90 [236]

Answer:

The sum of all angles (3 angle)= 180

unknown angle = x

x +20+50 =180

x +70 =180

x = 180-70

x=110

Ans ; the third angle is 110 degree

Step-by-step explanation:

6 0
3 years ago
Hey, here are all the problems. Im not sure how to do this and my teacher isnt giving me much time. Help would be apricated
AleksAgata [21]

Answer:

17x + 16

-7x - 1

-6x - 13

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Step-by-step explanation:

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8 0
3 years ago
What is the slope and why?
N76 [4]

Answer:

Step-by-step explanation:

ok slope is m because there is a thing called y-intercept, so you use x to find slope.

the whole formula is y = mx +b

in this case m = slope with x being the part of the slope from where you got it from

the answer would be m = \frac{1}{2}x

i hope this helped :)

5 0
3 years ago
Read 2 more answers
Help Please and show work
Ilya [14]

Well you know that the total cost for the repair before any discount in both cases is $970. Company A has a 200 dollar discount so you can simply subtract 200 dollars from $970 to get $770. So you know company a will cost $770

With company B you know you are getting 15% off of the price of 970. This means to find how much you are getting off for company B you multiply 970 by 0.15 which ends up being 145.5 so company B is giving a discount of $145.50.

This means that the discount for company A is better because company A has $200 off compared to company B's $145.50

5 0
4 years ago
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