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3 years ago

Write the following proportion 8 is to 64 as 2 is to x

1 answer:

3 0

Your answer should be written as two fractions, with an equal sign between them. This could help you later to solve x.

8/64 = 2/x

Again, these should be written as fractions.

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A cell phone provider offers a plan that costs $30 per month plus $0.10 per text message sent or received. A comparable plan c

mariarad [96]

300 messages would have to be sent or received in order for the plan to cost same each month.

Step-by-step explanation:

Given,

Cost per month = $30

Per text sent or received charges = $0.10

Let,

x be the number of texts sent or received.

A(x) = 0.10x+30

A comparable plan costs = $60 per month

Text messages are unlimited.

B(x) = 60

For the two plans to cost equal;

A(x) = B(x)

$0.10x+30=60\\0.10x=60-30\\0.10x=30$

Dividing both sides by 0.10

$\frac{0.10x}{0.10}=\frac{30}{0.10}\\x=300$

300 messages would have to be sent or received in order for the plan to cost same each month.

Keywords: function, addition

Learn more about functions at:

#LearnwithBrainly

3 0

4 years ago

The sum of 3 consecutive even

aleksandrvk [35]

Answer:

The variable representation is x, x+2 and x+4 for this sequence.

Step-by-step explanation:

Given that:

The sum of 3 consecutive even numbers is 78.

Let,

The first even number is represented by x.

As the numbers are consecutive, thus,

First even number = x

Second even number = x+2

Third even number = x+4

Hence,

The variable representation is x, x+2 and x+4 for this sequence.

7 0

3 years ago

Can anybody please help me out with this problem I would really appreciate it so much . Please and thank you

White raven [17]

"Supplementary" angles add up to 180°.

Opposite angles are supplementary, so . . .

(12x - 4) + (19x - 2) = 180°

Clear the parentheses: 12x - 4 + 19x - 2 = 180°

Add up all the x's on the left side: 31x - 4 - 2 = 180°

Add up the plain old numbers on the left side: 31x - 6 = 180°

Add 6 to each side: 31x = 186°

Divide each side by 31 : <em>x = 6°</em>

Well ! Now that you know that x = 6° . . .

Angle EPC is (12x - 4)°

That's (12·6 - 4)°

Which is (72 - 4)°

Which is <em>68°</em>

4 0

3 years ago

Find \cos(\alpha)cos(α)cosine, left parenthesis, alpha, right parenthesis in the triangle. Choose 1 answer: Choose 1 answer: (Ch

icang [17]

Answer:

Check Explanation

Step-by-step explanation:

The diagram for this question is missing, but from the setup of the question, it is evident that the triangle to obtain cos α from is a right angled triangle.

It is evident from the options provided that the right angled triangle is one with dimensions of 20, 21 and 29.

These three dimensions perfectly form a Pythagorean triple.

So, the value of cos α now depends on the setup of the triangle.

From trigonometric relations, if α is an angle in the right angled triangle, cos α is given mathematically as

Cos α = (Adj/Hyp)

For this Pythagorean triple,

Hyp = hypotenuse side = 29

Adj = Adjacent side = 20 or 21, depending on the triangle's setup.

If the adjacent is 20,

Cos α = (20/29), option A is correct.

If the adjacent is 21,

Cos α = (21/29), option C is correct.

Hope this Helps!!!

7 0

3 years ago

Fill in the blank 2(x+7) = 2x + __

natka813 [3]

Answer:

Step-by-step explanation

3 0

3 years ago