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ra1l [238]
3 years ago
9

18=3-3a what’s the steps

Mathematics
1 answer:
Harrizon [31]3 years ago
6 0

Answer:

a=-5

Step-by-step explanation:

subtract 3 from both sides

15=-3a

divide by -3

a=-5

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Dogwood Park is 30 yards long by 20 yards wide. Kylie is making plans to double the area by adding a strip at one end and anothe
Alik [6]
We are asked to solve for the value of "x" such that when it is added in the original area of the park it will double the area. Let us compute first the area of the original dog park (A1) and the solution is shown below:
Area = Lenght*Width = L*W where L=30 yards and W=20 yards
Area = 30*20
Area = 600 yards squared
Solving for the x, when x is added to both sides which double the area:
A1*2 = (L + 2x)*W
600*2 = (30+2x)*20
1200 / 20 = 30+2x
60 = 30 + 2x
60-30 = 2x
30/2 =x
15 = x

The value of x is 15 yards.
8 0
3 years ago
Write an equation for the graph of each line.<br><br>​
emmasim [6.3K]

Answer:

5. y = 2x + 4

6. y = (-1/2)x - 2

Step-by-step explanation:

5. We want to find the slope-intercept form of this, which is y = mx + b, where m is the slope and b is the y-intercept.

Slope is change in y divided by change in x. Here, let's take two random points: (-2, 0) and (0, 4). Then we have:

m = (4 - 0) / (0 - (-2)) = 4 / 2 = 2

The slope is thus 2.

The y-intercept is where the line crosses the y-axis. We see it does so at the point (0, 4), so b = 4.

Our equation is thus: y = 2x + 4.

6. Again, let's find the slope. Pick any two points: (-4, 0) and (0, -2). The slope will be:

m = (-2 - 0) / (0 - (-4)) = -2 / 4 = -1/2

Now, look at the point (0, -2); that's where the line crosses the y-axis, so the y-intercept is b = -2.

Thus, the equation is: y = (-1/2)x - 2.

3 0
3 years ago
Read 2 more answers
R=-6 and t=3. what is 12-t | 3r-2 |
SVEN [57.7K]
12 - t|3r - 2|

r = -6; t = 3

subtitute:

12 - 3 · |3 · (-6) - 2| = 12 - 3 · |-18 - 2| = 12 - 3 · |-20| = 12 - 3 · 20 = 12 - 60 = -48
7 0
3 years ago
What if 30% of volcanoes were in california?
EleoNora [17]
Then 70% of volcanos wouldn't be in California.
7 0
3 years ago
I'm so confused and need help ​
siniylev [52]

Answer:

SAS, SSS, AAA

Step-by-step explanation:

Because Im bored  X D

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