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IRINA_888 [86]
2 years ago
9

2 (m-n) Answer this question knowwwww

Mathematics
1 answer:
Colt1911 [192]2 years ago
5 0

Answer:2m-2n

Step-by-step explanation:

Multiply each term in the parentheses by 2

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Match each system to the correct choice.
pogonyaev

Answer:

Option A - Neither. Lines intersect but are not perpendicular. One Solution.

Option B - Lines are equivalent. Infinitely many solutions

Option C - Lines are perpendicular. Only one solution

Option D - Lines are parallel. No solution

Step-by-step explanation:

The slope equation is known as;

y = mx + c

Where m is slope and c is intercept.

Now, two lines are parallel if their slopes are equal.

Looking at the options;

Option D with y = 12x + 6 and y = 12x - 7 have the same slope of 12.

Thus,the lines are parrallel, no solution.

Two lines are perpendicular if the product of their slopes is -1. Option C is the one that falls into this category because -2/5 × 5/2 = - 1. Thus, lines here are perpendicular and have one solution.

Two lines are said to intersect but not perpendicular if they have different slopes but their products are not -1.

Option A falls into this category because - 9 ≠ 3/2 and their product is not -1.

Two lines are said to be equivalent with infinitely many solutions when their slopes and y-intercept are equal.

Option B falls into this category.

8 0
2 years ago
Plz help meh
dusya [7]

Answer:

Step-by-step explanation:

The rock will hit the surface when its height equals zero.

t^2-8t-10=0

t^2-8t=10

t^2-8t+16=10+16

(t-4)^2=26

t-4=+(26^(1/2))

t=4+(26^(1/2))

t=9.1s

8 0
2 years ago
Prove that the recurring decimal 0.39 = 13/33
Tcecarenko [31]
x=0.\overline{39}\\100x=39.\overline{39}\\
100x-x=39.\overline{39}-0.\overline{39}\\
99x=39\\
x=\dfrac{39}{99}=\dfrac{13}{33}

8 0
3 years ago
In a speed race there are markers every 0.8 miles.If the course is 36 miles long,how many markers will be placed along the route
Masja [62]
36 divided by 0.8 = 45
45 makers will be placed along the route
8 0
3 years ago
the number is less than 190,000 and greater than 180,000, 5000 more than the number has 187 thousands, 200 less than the number
jarptica [38.1K]
187000-5000=182000
182400+200=182600
The number is 182,600
5 0
2 years ago
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