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brilliants [131]
3 years ago
12

Solve for d. 2(d − 10) = 18 d =

Mathematics
1 answer:
snow_tiger [21]3 years ago
6 0

Here,

2(d - 10) = 18

d = ?

Now,

2(d - 10) = 18

or, 2d - 20 = 18

or, 2d = 18 + 20

or, 2d = 38

◆ d = 19

I hope it's help you...

Thanks♥♥

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Please help !!!!!!!!!!!!!
Julli [10]

Answer:

→ The table is:

→  x  →  -1   →  0  →  1

→  y  →  -3  →  0  →  3

The graph of the line is figure d

Step-by-step explanation:

∵ y = 3x

∵ x = -1, 0, 1

→ Substitute the values of x in the equation to find the values of y

∴ y = 3(-1) = -3

∴ y = 3(0) = 0

∴ y = 3(1) = 3

→ The table is:

→  x  →  -1   →  0  →  1

→  y  →  -3  →  0  →  3

∵ The form of the linear equation is y = m x + b, where

  • m is the slope
  • b is the y-intercept

∵ y = 3x

→ Compare the equation with the form

∴ m = 3

∴ b = 0

→ That means the slope is positive, then the direction of the line must

   be from left tp right and passes through the origin

∴ The graph of the line is figure d

6 0
3 years ago
The perimeter of the triangle is 34 cm. Solve for x.
Musya8 [376]
5x-2+x-3+x-3 = 34
7x-8 = 34
7x/7 = 42/7
x = 6
3 0
2 years ago
Read 2 more answers
The mean of 4 numbers is 19. What would the new mean be if the number 30 is added to the data set?
german

Answer:

B 21.2

Step-by-step explanation:

Im not sure at all tho. But I hope this helps :/

8 0
2 years ago
Michelle will be 72 years old in eighteen years. How old is Michelle now? A. 90 years old B. 54 years old C. 36 years old D. 49
Katen [24]
Subtract 18 from 72 to get Michelle's current age.

72 - 18 = 54
5 0
3 years ago
Read 2 more answers
A rectangular prism and a triangular prism each have a volume of 210 cubic meters. find possible dimensions for each prism.
Evgesh-ka [11]
An interesting question! Let's take a look at the rectangular prism first.

[Rectangular Prism]
We know that the formula for the volume of a rectangular prism is:
volume = length * width * height

or more simply
V = L*W*H

All we know is that the volume is 210 cubic meters. We can choose whatever we want for the dimensions to force it to work! We're free to do what we want!
210 = L*W*H

I like 10, that's a nice number. Let's make L = 10.
210 = 10*W*H

Hmm... but now I need W*H to be 21 (think about it, make sure you get why I say that). Well, how about W = 7 and H = 3? That should work.
210 = 10*7*3

It checks! Possible dimensions for the rectangular prism are L = 10 meters, W = 7 meters, and H = 3 meters. There are many other choices of course, but this is a possible choice.

[Triangular Prism]
Same idea, different formula. For a triangular prism, the volume is
V = 1/2 * L*W*H

But the volume is still 210 cubic meters, so we just have
210 = 1/2 * L*W*H

So, one of our dimensions is going to be cut in half. Why don't we just double L to make up for it? 
210 = 1/2*(20)*W*H

And we can leave W and H the same
210 = 1/2*20*7*3

Check that it works! A possible choice is L = 20 meters, W = 7 meters and H = 3 meters.

We're done!

5 0
3 years ago
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