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4 years ago

Solve for x in the diagram below. 3x 75° T =

Mathematics

2 answers:

leva [86]4 years ago

7 0

Answer:
3x+75=180
3x=180-75
3x=105
x=105/3
x=35

LiRa [457]4 years ago

3 0

Answer:

x=35

Step-by-step explanation:

The 2 angles are on a straight line together. This means they are supplementary. When they are added together, they must equal 180 degrees.

3x+75=180

We want to find out what n is. In order to do this, we have to get n by itself. Perform the opposite of what is being done to the equation. Keep in mind, everything done to one side, has to be done to the other.

75 is being added to 3x. The opposite of addition is subtraction. Subtract 75 from both sides.

3x+75-75=180-75

3x=180-75

3x=105

x is being multiplied by 3. The opposite of multiplication is division. Divide both sides by 3.

3x/3=105/3

x=105/3

x=35

x is equal to 35.

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Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Becky needs to choose a new cell phone plan. She has 2 choices. Carolina Cell offers a monthly fee of $20.79 and $2.00 for each

Paladinen [302]

Answer:

4.2 gigabytes

Step-by-step explanation:

To find the answer, you need to write an equation where the cost of Carolina Cell is equal to the cost of Sanford Cell:

20.79+2x=22.89+1.50x, where x is the number of gigabytes used.

Now, you can solve for x:

2x+1.50x=22.89-20.79

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7 0

3 years ago

The width, y, of a rectangle with a fixed area varies inversely with its length, x. The width is 3 inches when the length is 14

IrinaVladis [17]

Answer:

$y = 1.4$

Step-by-step explanation:

Given

$y = width$

$x = length$

$y = 3;\ when\ x = 14$

Required

Find y when x = 30

Being an inverse variation, we have:

$y\ \alpha\ \frac{1}{x}$

Convert the variation to an equation

$y = \frac{k}{x}$

First, we solve for k

Make k the subject to solve for k

$k = xy$

$y = 3;\ when\ x = 14$

So, the value of k is:

$k = 14 * 3$

$k = 42$

To solve for y when x = 30

Substitute 30 for x and 42 for k in $k = xy$

$42 = 30 * y$

Make y the subject

$y = \frac{42}{30}$

$y = 1.4$

6 0

3 years ago

What is 8 multiplied by 8 subtracted by 21 multiplied by 200 divided by 96

never [62]

8x8-21x200/96
your answer is 20.25 when putting in the calculator

7 0

3 years ago

The piney creek is preparing for the opening day of the summer season . The pool holds 22,410 gallons of water , and water is be

spayn [35]

Yes, all you do is 540x42 which gives you 22680 and the pool only needs to be filled up with 22410, so yes

7 0

3 years ago