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3 years ago

Which two expressions are equivalent?

Mathematics

1 answer:

Serjik [45]3 years ago

3 0

Step-by-step explanation:

We are doing to replace d with 14

(14 + 9 equals 23) times 3 (equals 69) and 14 plus (9 times 3 equals 27) equals 41

(14 -8 equals 6) times 2 equals 12 and 8 -14 equals 6 (times 2) equals -12

3(4 times 14 equals 56-2 equals 54) times 3 equals 162 and 7 times 14 equals 98 -5 equals 93

5(3 times 14 equals 42 plus 6 equals 48) times 5 equals 240 and 15 times d equals 210 plus 30 equals 240

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Write the point-slope form with two points ..of the given line that passes through the points (0, -3) and (4, 1). Identify (x1,

frez [133]

You need to find the slope too.
$m = \frac{y2 - y1}{x2 - x1} = \frac{ - 3 - 1}{0 - 4} = \frac{ - 4}{ - 4} = \frac{1}{1}$
point slope formula y - y1 = m(x - x1)
use (0, -3)
y - (-3) = 1 (x -0)
y + 3 = 1x

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3 years ago

What is the slope of the line that passes through the given points? (1 point)

frez [133]

(1/2,3)(2,3/4)
slope = (3/4 - 3) / (2 - 1/2) = (3/4 - 12/4) / (4/2 - 1/2) =
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4 0

3 years ago

A wheel spins at 300 revolutions per minute. What is the angular velocity of the wheel, in radians per second? Round the answer

Ostrovityanka [42]

well, this is just a matter of simple unit conversion, so let's recall that one revolution on a circle is just one-go-around, radians wise that'll be 2π, and we also know that 1 minute has 60 seconds, let's use those values for our product.

$\cfrac{300~~\begin{matrix} r \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~ }{~~\begin{matrix} min \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~ }\cdot \cfrac{2\pi ~rad}{~~\begin{matrix} r \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~ }\cdot \cfrac{~~\begin{matrix} min \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~ }{60secs}\implies \cfrac{(300)(2\pi )rad}{60secs}\implies 10\pi ~\frac{rad}{secs}\approx 31.42~\frac{rad}{secs}$

7 0

2 years ago

A student took a system of equations, multiplied the first equation by 2 and the second equation by 3, then added the results to

egoroff_w [7]

Answer:

system 4.

Step-by-step explanation:

3x+6y=9

multiply by 2

6x+12y=18 ....(1)

-2x+-4y=4

multiply by 3

-6x-12y=12 ...(2)

add (1) and (2)

0+0=30

which is impossible .It has no solutions.

3 0

3 years ago

Research indicates that the leading brand of laundry detergent accounted for 35% of the 400,000 total sales in the marketplace.

Lesechka [4]

Answer:

140,000

Step-by-step explanation:

Take 400,000 * 0.35 = 140,000.

When given a percentage, take the number and divide by 100.

In this case 35 / 100 = 0.35.

Then you can take the total amount and multiply it by the percentage in decimal form.

In this case 400,000 * 0.35

5 0

3 years ago