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Ilya [14]
3 years ago
10

What is the value of x?

Mathematics
1 answer:
In-s [12.5K]3 years ago
8 0

Answer:

24

Step-by-step explanation:

The vertically opposite angles make it possible to say that the two triangles are similar. The reason is that you are give 1 pair of angles being equal and the vertically opposite angles make a second pair. By AA, the triangles are similar.

Hint: always put the line labeled x in the numerator of the proportion that you set up.

so

x/8 = 15/5    For just this question reduce the right side

x/8 = 3         Now multiply both sides by 8

8*x/8 = 3*8  Do the multiplicaton

x = 24

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Plisss help me in thiss
ahrayia [7]

Answer:

x=80

Step-by-step explanation:

The angle of a line is 180*.

The equation would be (x+20)+x=180

Subtract 20 from both sides: 2x=160

Divide by 2: x=80

That's your answer!

I hope this helps!

3 0
3 years ago
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I don’t get scientific notation. can someone help me on this?
Radda [10]
Scientific notation is a way of expressing numbers that are too large or too small to be conveniently written in decimal form. It may be referred to as scientific form or standard index form, or standard. Scientific notation is a way of writing very large or very small numbers. A number is written in scientific notation when a number between 1 and 10 is multiplied by a power of 10. For example, 650,000,000 can be written in scientific notation as 6.5 ✕ 10^8.
8 0
3 years ago
Lesson 9 problem set 3.6
Lynna [10]
Ok so what's the question?
5 0
4 years ago
NEED ANSWER ASAP- MARK AS BRANLIEST
azamat

Answer:

  x = 1 +√5

Step-by-step explanation:

There are different formulas for the area of a triangle available, depending on the given information.

<h3>Formulas</h3>

When two sides and the angle between them are given, the relevant area formula is ...

  Area = 1/2(ab)sin(C)

When the base and height of a triangle are given, the relevant area formula is ...

  Area = 1/2bh

<h3>Equal Areas</h3>

The problem statement tells us the two triangles shown have equal areas. That means the two formulas will give the same result.

  Area from angle = Area from base/height

  1/2(x·x)sin(30°) = 1/2(x-2)(x+1)

  x² = 2(x² -x -2) . . . . . . . . . . . use sin(30°) = 1/2, multiply by 4

  x² -2x -4 = 0 . . . . . . . . subtract x², eliminate parentheses

  (x -1)² = 5 . . . . . . . . . add 4+1 to complete the square

<h3>Value of x</h3>

  x = 1 ± √5 . . . . . . take the square root, add 1

The value of x must be greater than 2 in order for the triangle side lengths to be positive. (x-2 > 0) This means x = 1-√5 is an extraneous solution.

The value of x is 1 +√5.

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3 years ago
The slope of a line is 2/3. the slope of a line parallel to it is ?
Afina-wow [57]

The slope of a line parallel has the same slope as the original equation.

Hence, the slope is 2/3

8 0
3 years ago
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