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Ymorist [56]
3 years ago
12

If f(x) = 2x -1, what does f(10) equal? -1 16 19 33 Asap pls

Mathematics
1 answer:
wel3 years ago
8 0

Step-by-step explanation:

f(x) = 2x - 1

f(10) = 2(10) - 1

= 20 - 1 = 19

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Can you help me please...
Gemiola [76]

Answer:

-9

Step-by-step explanation:

hope that helps dhdh

7 0
3 years ago
What equation represents the line that is perpendicular to y=1/2x - 3 and passes through the point (4,-6)?
zmey [24]

Answer:

The equation of line perpendicular to given line and passing through point (4 , - 6) is y = - 2 x - 2

Step-by-step explanation:

Given as :

The equation of line is

y = \dfrac{1}{2}x - 3

Now, standard equation of line is

y = m x + c

where m is the slope of line and c is the y-intercept

So, comparing with standard line equation with given line equation

∴ slope of given line = m = \dfrac{1}{2}

Again

other line is perpendicular to given line and passes through point (4 , - 6)

Let The slope of other line = M

∵ Two lines are perpendicular

∴ <u>From perpendicular lines property , the product of lines = - 1</u>

i.e m × M = -1

Or,  \dfrac{1}{2} × M = -1

Or M = \frac{-1}{\frac{1}{2}}

∴  M = - 2

So, The slope of other line = M = - 2

<u>Now, equation of line with slope - 2 and points (4 , - 6) in slope-point form</u>

y - y_1 = M (x - x_1)

Or, y - ( - 6) = ( -2) × (x - 4)

Or, y + 6 = - 2 x + 4

Or, y = - 2 x + 4 - 6

∴   y = - 2 x - 2

So, The equation of other line is y = - 2 x - 2

Hence, The equation of line perpendicular to given line and passing through point (4 , - 6) is y = - 2 x - 2  Answer

5 0
3 years ago
A farmer is painting a new barn. He will need to calculate the surface area of the barn to purchase the correct amount of paint.
gavmur [86]

Answer:

squared feet

Step-by-step explanation:

surface area of a barn is its length multiplied by its width which most definitely would have been measured in ft

therefore xfeet multiplied by yfeet will give xy squared feet

7 0
3 years ago
What is the answer to this 3(k−6)=15
Alchen [17]

Answer:

11

Step-by-step explanation:

First distribute the 3 to both the numbers inside of the parentheses:

3(k)-3(6)=15

3k-18=15

Add 18 to both sides

3k=33

Divide 3 from both sides to isolate k

k=11

5 0
2 years ago
Someone please answer this for me
Fudgin [204]
Each gallon costs $1.25
$15/$1.25 each= 12 gallons
Final answer: C
5 0
3 years ago
Read 2 more answers
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