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babunello [35]
3 years ago
6

Solve for x in the diagram below.

Mathematics
2 answers:
Ghella [55]3 years ago
6 0

Answer:

x= 20

Step-by-step explanation:

The three angles add to 90 degrees

x+2x+x+10 = 90

Combine like terms

4x+10 = 90

Subtract 10 from each side

4x +10-10 = 90-10

4x = 80

Divide by 4

4x/4 = 80/4

x = 20

hodyreva [135]3 years ago
3 0

Answer:

x = 20

Step-by-step explanation:

The three angles are complementary to each other.

That means they add up to 90 degrees.

x + 2x + (x + 10) = 90

Combine like terms.

4x + 10 = 90

Subtract 10 on both sides.

4x = 80

Divide both sides by 4.

x = 20

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Which system of equations is consistent and dependent?
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Answer:

Step-by-step explanation:

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we solve for y

−10y = −30

y = -30/-10

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and substitute in the first equation:

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then we substitute in the first equation the result found:

7x − 3y = −11

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we multiply by 3 to eliminate fractions:

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12x − 3y = −33

12(-2) − 3y = −33

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3 0
3 years ago
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What is the geometric mean of 3 and 18
anyanavicka [17]

Answer:

3 \sqrt{6}

7 0
3 years ago
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Freddy has a shelf that is 72/5 inches wide. How many catalogs can freddy arrange on the shelf if each catalog is 4/5 of an inch
Leni [432]
Hey!

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3 years ago
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What is the rule for the reflection ?
Zolol [24]

Answer:

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

This complete guide to reflecting over the x axis and reflecting over the y axis will provide a step-by-step tutorial on how to perform these translations.

 First, let’s start with a reflection geometry definition

Math Definition: Reflection Over the X Axis

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.

Math Definition: Reflection Over the Y Axis

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, theY axis would be called the axis of reflection.

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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.

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2 years ago
Find x. Round to the nearest degree.
jeka94

The Law of Cosines features the 3 side lengths of a triangle, plus the measure of the angle opposite one of those sides.


We want angle x, which is opposite the side of length 39.


Then: a^2 = b^2 - 2ab cos C becomes 39^2 = 36^2 + 59^2 - 2(36)(59)cos x


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