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Scilla [17]
3 years ago
11

Help me please! Posting a lot of them lol!

Mathematics
1 answer:
Vaselesa [24]3 years ago
3 0

Answer:

2n -4

Step-by-step explanation:

n+8 + n-12

Combine like terms

n+n+   8-12

2n -4

You might be interested in
1 n +5 - 1<br> n2 + n n2 +n<br> n-6<br> n +1
chubhunter [2.5K]
1). 1n+5-1
N=26
2). n2+n n2+n
n3+n2+n
6 0
3 years ago
Vineet solved a system of equations by substitution. In his work, he substituted an expression for one of the variables and solv
Eddi Din [679]

He can conclude that the system of equations has no solution since one equation in it always results with false equivalency.

Hope this helps.

r3t40

3 0
3 years ago
Read 2 more answers
X+y=8 and 3x+2y=14 for soliving system
kumpel [21]
X+y=8
multiply the first equation by 3 to get rid of x
3x+3y=24
3x+2y=14
subtract equation 1 from 2
y=10
substitute to find the value of x
x+10=8
x=-2


7 0
3 years ago
How to do this and whats the answer
Vinvika [58]

Answer:

(b) 36 degrees.

Step-by-step explanation:

K is the center of the circle so triangle KMN is isosceles and m < KMN = m KNM =  26 degrees ( base angles are equal)

So m <  LMK = m <LMN - m < KMN

= 98 - 26

= 72 degrees.

Now triangle LKM is also isosceles since K is the center of the circle so

m <  LKM = 180 - 2* 72

= 180 - 144

= 36 degrees.

4 0
2 years ago
The diagonals of a rectangle have length 12 and intersect in a 40 degree angle. Find the length and width rounded to the nearest
Tamiku [17]

Answer:

Length is 7.7 and width is 9.2

Step-by-step explanation:

The length and width of the rectangle will be the y and x coordinate of the diagonal line at angle of 40 degrees

Length L = dsin theta

Width W = d coos theta

d is the length of the diagonal

Given

d  = 12

theta = 40°

Substitute

Length = 12sin40°

Length = 12(0.6428)

Length = 7.7135

Length ≈ 7.7

Width = 12cos 40

Width = 12(0.7660)

Width = 9.192

Width = 9.2

Hence the length is 7.7 and width is 9.2

4 0
2 years ago
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