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kotegsom [21]
3 years ago
11

2. Scale: 4 inches = 12 miles. If the drawing length is 13 inches, what is the actual length

Mathematics
1 answer:
Fudgin [204]3 years ago
8 0

Answer:

39 miles

Step-by-step explanation:

  • 4 inches     ⇔     12 miles
  • 1 inch          ⇔     12/4 = 3 miles
  • 13 inches    ⇔     3*13 = 39 miles
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The ends of a pipe when measured with a tape measure that has marks every millimeter are exactly at the 0 mark and the 15 meter
exis [7]
If the ends span from the 0 to the 15 meter mark, then the length of the pipe is 15 meters. However, you should report it using the right amount of significant figures. It is mentioned in the problem that millimeter marks are calibrated between meters. Since millimeter is 1/1000 of a meter, you should add three decimal places to the 15 meters. Hence, you should report it as 15.000 meters.
3 0
3 years ago
X + 2y = 5<br> x - 3y = 7 <br> What is the value of the y-determinant? <br> -2<br> -1 <br> 2
grandymaker [24]

Answer:

y-determinant = 2

Step-by-step explanation:

Given the following system of equation:

  • x + 2y = 5
  • x - 3y = 7

Let's represent it using a matrix:

\left[\begin{array}{ccc}1&2\\1&-3\end{array}\right] = \left[\begin{array}{ccc}5\\7\end{array}\right]

The y‐numerator determinant is formed by taking the constant terms from the system and placing them in the y‐coefficient positions and retaining the x‐coefficients. Then:

\left[\begin{array}{ccc}1&5\\1&7\end{array}\right]

y-determinant = (1)(7) - (5)(1) = 2.

Therefore, the y-determinant = 2

5 0
3 years ago
Does this graph represent a function? Why or why not?
malfutka [58]

Answer:

Yes.

Step-by-step explanation:

It is a function because it passes the vertical line test. Each x-value has just one y-value. If the relation had any x-values that had several y-values, it would just be a relation. But this one is a function.

Hope this helps!

6 0
3 years ago
Take a look at the picture and tell me what you think.<br><br> Thank you ;)
Blababa [14]

Answer:

The answer is A, "Find the number of 1 foot cubes that fill the fish tank."

Step-by-step explanation:

You can find the answer by multiplying 3 x 3 x 5, which is 45. 45 1 foot cubes will fill the fish tank.

3 0
3 years ago
Which ordered pair is the y intercept of y=2x^2+3x-3?
rosijanka [135]

Answer:

I think it's A - (0,-3)

Step-by-step explanation:

 x,y

(0,-3)

y-intercept equation for this problem:

y=2x^{2}+3x-3

Break it down to smaller parts:

2(0)^{2} +3(0) = 0

0 - 3 = -3

Rewriting it in a neater way:

=> y = 2(0)^{2} +3(0) -3\\y=-3

Therefore, answer A / the first choice is correct

- have a great day, be safe & healthy -

8 0
3 years ago
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