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3 years ago

Simplify the expression 2k+10k-(2k+3)+13

Mathematics

2 answers:

mixer [17]3 years ago

7 0

Answer:

10k+10

Step-by-step explanation:

Combine Like Terms:

=(2k+10k−2k)+(−3+13)

=10k+10

hope this makes sense

Verdich [7]3 years ago

6 0

12k - 2k +16 you add the 2 and 10 on the first half and the 3 and 13 on the other half

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3,5,8,11,17-35odd,47,54,70,78,80,81 pls help

nirvana33 [79]

Answer:

54, 78, 70, 47, 80, 81,

Step-by-step explanation:

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2 years ago

Write an equation for a line perpendicular to y=4x+1 and passing through the point (12,-7).

Gnoma [55]

Answer:

Step-by-step explanation:

y = 4x + 1

Slope of line = 4

Slope of perpendicular to line = -¼

Point-slope equation for line of slope -¼ that passes through (12, -7):

y+7= -¼(x-12)

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2 years ago

HURRY!!!!

mestny [16]

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3 years ago

F(x)=- square root x-2. +3

sukhopar [10]

Answer:

Hi, The.

The domain of a function is the set of all possible values for x. The range is all possible values for y.

You should be able to see these pretty easily from the graph. If I understand your function correctly:

f(x) = square root(x+2) - 3

then x cannot be less than -2. Your domain is x > -2. In interval notation [-2,∞)

The lowest value for y is -3 so the range is y > -3. In interval notation [-3,∞)

Hope this helps!

7 0

2 years ago

I just need help with three, four, and seven. Solve the system of linear equations, and determine if the equation has one soluti

likoan [24]

3. If $y=5x+9$ and $y=3x-2$ , then

$5x+9=3x-2\implies2x+9=-2\implies2x=-11\implies x=-\dfrac{11}2$

Then

$y=5\left(-\dfrac{11}2\right)+9=-\dfrac{55}2+9=-\dfrac{37}2$

(only one solution)

4. If $y+2=4x$ , then $y=4x-2$ . So we're told that $4x-5=4x-2$ but this is impossible, because that would that for any $x$ , we have -5 = -2. This is false, so this system has no solution.

7. "y is 6 less than 3 times x" means $y=3x-6$ . "x is 2 more than one-third of y" means $x=\dfrac13y+2$ . Solving the second equation for $y$ gives $y=3x-2$ , which would mean $3x-6=3x-2$ . But for the same reason as in (4), there is no solution. For any value of $x$ , this equation gives the false conclusion that -6 = -2.

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3 years ago