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horsena [70]
3 years ago
10

30% of what number is 9

Mathematics
1 answer:
8090 [49]3 years ago
3 0

Answer:

30

Step-by-step explanation:

30 percent of what number is 9?

9 is 30% of 30

Working out percentages

We have, 30% × x = 9

or,  

30

100

× x = 9

Multiplying both sides by 100 and dividing both sides by 30,

we have x = 9 ×  

100

30

x = 30

If you are using a calculator, simply enter 9×100÷30, which will give you the answer.

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Answer: Graph shifts 4 units to the left

Explanation:

I'm assuming you meant to say y = |x+4|

If so, then the graph shifts 4 units to the left. Replacing x with x+4 moves the xy axis 4 units to the right if we held the V shape in place (since each x is now 4 units larger). This gives the illusion the V shape is moving 4 units to the left.

Or you could look at the vertex point to see how it moves. On y = |x|, the vertex is at (0,0). It then moves to (-4,0) when we go to y = |x+4|

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3 years ago
Find x if AB = 9, BC = 2x - 5,<br> and AC = x + 9
Oxana [17]

Answer:

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Step-by-step explanation:

Using the fact that line segments AB and BC are parts of the whole line segment AC, we can write the following equation:

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Now, using the given values, we can substitute in for the equation and solve for x:

AB + BC = AC

9 + 2x - 5 = x + 9

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x = 5

Thus, we have found that for these sets of equations for these line segments, our value for x should be 5.

Cheers.

5 0
3 years ago
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3 years ago
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fomenos

Answer:

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Step-by-step explanation:

"soh-cah-toa"

Just an easy way to remember how Sine, Cosine and Tangent work:

Soh...

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