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marusya05 [52]
3 years ago
9

What is 90% of 20????

Mathematics
2 answers:
BARSIC [14]3 years ago
8 0

Answer:

18

Step-by-step explanation:

Hello there. This problem can be easily solved by setting up a ratio.

This would be as follows

\frac{90percent}{100}  x  \frac{x}{20 }

after solving for x we find that 90% of 20 should be 18.

Hope this helps!

pickupchik [31]3 years ago
6 0

Answer:

18

Step-by-step explanation:

Multiply 20 by 0.90 (that is 90%)

18 is the answer

Hope this helps :)

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Write down in terms of n, an expression for the nth term
Alekssandra [29.7K]

Answer:

In bold below.

Step-by-step explanation:

a)  Arithmetic sequence with common difference 3 and first term = 2:

nth term =  2 + 3(n - 1)

= 3n -1.

b)  Similar to above with common difference 2 and first term = 9.

nth term = 9 + 2(n - 1)

= 2n + 7.

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2 years ago
Uhhhhhh help pls :))
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Answer:

The answer is the 2nd choice

Step-by-step explanation:

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3 years ago
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Enrollment in French class at a high school is 0.72 of enrollment in Spanish class. What is enrollment in French class compared
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72%, 28%

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3 years ago
What is the rule for the reflection? rx-axis(x, y) → (â€"x, y) ry-axis(x, y) → (â€"x, y) rx-axis(x, y) â†
malfutka [58]

The rule for the reflection is explained below. The correct option will be x-axis (x, y) = (x, -y).

In real life, we think of a reflection as a mirror image, like when we look at own reflection in the mirror.

This idea of reflection correlating with a mirror image is similar in math.

<h3>Reflection Over the X Axis </h3>

A reflection of a point, a line, or a figure in the X axis involved reflecting the image over the x axis to create a mirror image.

In this case, the x axis would be called the axis of reflection.

The rule for reflecting over the X axis is to negate the value of the y-coordinate of each point, but leave the x-value the same.

When point P with coordinates (5,4) is reflecting across the X axis and mapped onto point P’, the coordinates of P’ are (5,-4).

Notice that the x-coordinate for both points did not change, but the value of the y-coordinate changed from 4 to -4.

<h3>Reflection Over the Y Axis </h3>

A reflection of a point, a line, or a figure in the Y axis involved reflecting the image over the Y axis to create a mirror image.

In this case, the Y axis would be called the axis of reflection.

The rule for reflecting over the Y axis is to negate the value of the x-coordinate of each point, but leave the y-value the same.

when point P with coordinates (5,4) is reflecting across the Y axis and mapped onto point P’, the coordinates of P’ are (-5,4).

Notice that the y-coordinate for both points did not change, but the value of the x-coordinate changed from 5 to -5.

Hence the correct option is r x-axis(x, y) = (x, -y).

For more details on reflection follow the link:

brainly.com/question/4998744

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2 years ago
six college buddies bought each other christmas gifts. they spent $261.12 $120.52 $186.23, $298.97 $171.55 $263.93
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The answer is 1,302.32
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