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Kruka [31]
3 years ago
14

Solve for ;x+20/2=3x

Mathematics
1 answer:
Alchen [17]3 years ago
4 0
<span>x in (-oo:+oo)

(x+20)/2 = 3*x // - 3*x

(x+20)/2-(3*x) = 0

(x+20)/2-3*x = 0

(x+20)/2+(-3*2*x)/2 = 0

x-3*2*x+20 = 0

20-5*x = 0

(20-5*x)/2 = 0

(20-5*x)/2 = 0 // * 2

20-5*x = 0

20-5*x = 0 // - 20

-5*x = -20 // : -5

x = -20/(-5)

x = 4 so x= 4</span>
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Find the x- and y-intercept of the line x+4y=36
blagie [28]

Answer:

x=36

y=9

Step-by-step explanation:

Plug in 0 for x to find the y-intercept

0 + 4y = 36

4y = 36

y = 9

y-intercept (0, 9)

Plug in 0 for y to find the x-intercept

x + 4(0) = 36

x = 36

x-intercept (36, 0)

4 0
3 years ago
Every autumn, the North American Monarch
Stolb23 [73]

Part A

The equation is d = 50t

This is because the slope of 50 represents how many miles per day the butterflies cover (on average). The y intercept is 0 to indicate that 0 miles have been traveled initially.

You can think of this as the equation y = 50x

If t = 1, then d = 50t = 50*1 = 50 miles have been covered

If t = 2, then d = 50t = 50*2 = 100 miles have been covered

And so on.

==========================================================

Part B

You'll have these values in the bottom row (in the order presented): 50, 100, 150, 200, 250

You can plug in the values t = 1, t = 2, t = 3, t = 4 and t = 5 into d = 50t to find those answers in bold.

Or you could add on 50 each time to generate each new value. We start at 50 since t = 1 corresponds to d = 50.

==========================================================

Part C

You can keep the pattern of 50,100,150, ... going until you reach 2500. Then note the t value that pairs with d = 2500

In my opinion, that's the slower method.

The quicker method is to plug d = 2500 into the equation for part A, and then solve for t.

d = 50t

2500 = 50t

50t = 2500

50t/50 = 2500/50 ....... divide both sides by 50

t = 50

It will take 50 days for the average distance traveled to be 2500 miles.

6 0
3 years ago
As one of her chores staci must vacuum 1/2 of the house if she already has vacuumed 1/3 of her share tonight what part of the ho
bonufazy [111]
Given that S<span>taci must vacuum 1/2 of the house.

If she already has vacuumed 1/3 of her share tonight the part of the house she has vacumed is given by

\frac{1}{3} \ of \ \frac{1}{2} = \frac{1}{3} \times \frac{1}{2} = \frac{1}{6}

Therefore, she has vacuumed 1/6 of the house.
</span>
3 0
3 years ago
Macys is having a one day 36% off special. if Sara baught $123.50 worth of items what would the final bill be after applying the
astra-53 [7]

Answer:

$79.04

Step-by-step explanation:

First you have to figure out how much the discount would be.

123.50 X .36 = 44.46

Then all you have to is subtract that from the original cost

123.50 - 44.46 = 79. 04

7 0
2 years ago
Y= -x - 8x - 16 how many solutions
Rom4ik [11]

Answer:

1 solution

Key:

Assume <em>x</em> is the the range x > 0 ≥ 1, in other words, assume <em>x</em> is equal to 1.

Step-by-step explanation:

y = -x - 8x - 16\\= -x - 8x\\= 9x\\= 9x - 16

3 0
1 year ago
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