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Naya [18.7K]
3 years ago
13

Double the difference of a number n and 3 is -10. Which equation models this "number riddle" correctly?

Mathematics
1 answer:
Cerrena [4.2K]3 years ago
7 0
Answer: D

Explanation
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Which of the following is an example of scale?
Elena-2011 [213]

Answer:

12 inches in 1 foot

Step-by-step explanation:

In this problem, we need to find an example that is a scale.

There must be a relation between two units.

There are many types of units of lengths. These can be metre, cm, mm, foot, inches.

The relation between inch and foot is given by :

1 foot = 12 inch

So, we can say there are 12 inches in 1 foot.

<u>Hence, the correct option is (c).</u>

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1. Use the inequality 12≥6(12x+2).
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How to find the gradient of line segment joining each pair of points?
yarga [219]

Answer:

2

1/3

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6 0
3 years ago
How tall is a building that casts a 73 foot shadow when the angle of elevation of the sun is 29
Ilya [14]
We use trigonometry for this problem. You might have learned about SOH CAH TOA. In right triangles, when given an angle, you can name the three sides of the triangle a certain part: Opposite, Adjacent, and Hypotenuse.

For this problem, we are given the angle and the ADJACENT length (73). We want to find the OPPOSITE side's length.
TOA
We must use the tangent function.

TOA helps us remember this relationship:
tan( theta ) = opposite / adjacent.

Plug in our values:

tan(29 degrees) = opposite / 73

Multiply by 73 to isolate "opposite" and solve for it.

73 * tan(29) = opposite.

Using a calculator, the answer is approximately 40.46 ft.

7 0
3 years ago
Find an equation of the line(-2,-9) and(-7,-3)
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Answer:

The required equation is 6x+5y+57=0.

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3 years ago
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