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3 years ago

5y + 6 + 3y = 30 show me how you get the answer show me your work pls

Mathematics

2 answers:

zepelin [54]3 years ago

6 0

Answer:

y = 3

Step-by-step explanation:

5y + 6 +3y = 30

5y + 3y = 8y

8y + 6 = 30

-6 -6

8y = 24

24 / 8 = 3

y = 3

romanna [79]3 years ago

5 0

Answer:

Step-by-step explanation:

5y + 3y= 8y

8y = 8 * 3 = 24

24 + 6=30

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The graph below shows the total costy (in dollars) of owning and operating a compact car

PIT_PIT [208]

The relationship between the cost and the miles driven, as presented on the graph is an illustration of a linear equation or a linear graph.

The growth rate per year is $0.36 per year
The cost of owning and operating the car is $7201.44

<u>A. The growth per year</u>

This simply means that we calculate the slope (m) of the graph.

This is calculated using:

$m = \frac{y_2 - y_1}{x_2 - x_1}$

From the graph, we have:

$(x_1,y_1) = (5000, 1800)$

$(x_2,y_2) = (20000, 7200)$

So, we have:

$m = \frac{7200 - 1800}{20000 - 5000}$

$m = \frac{5400}{15000}$

$m = 0.36$

Hence, the growth per year is: $0.36 per year

<u>B. The cost, when the number of miles is 20004 miles</u>

The equation of a straight line is:

$y = mx + b$

Where:

$m = 0.36$ --- the slope

$b = 0$ --- the point where the graph crosses the y-axis.

So, we have:

$y = 0.36x + 0$

$y = 0.36x$

The cost when the miles driven is 20004, is:

$y = 0.36 \times 20004$

$y = 7201.44$

The cost of owning and operating the car is $7201.44

Read more about linear graphs at:

brainly.com/question/11897796

8 0

3 years ago

The number of people who attend a concert varies directly with the amount of money spent on advertising. If 790 tickets are sold

tangare [24]

Answer:

$4837.5

Step-by-step explanation:

Given that,

790 tickets are sold when $2,547.75 is spent on advertising.

We need to find the money to be spent on advertisements to get a sellout crowd of 1500.

It is also mentioned that the number of people who attend a concert varies directly with the amount of money spent on advertising. Let money be x. So,

$\dfrac{790}{2547.75}=\dfrac{1500}{x}\\\\x=\dfrac{2547.75\times 1500}{790}\\\\x=\$4837.5$

So, $4837.5 is spent on advertisements to get a sellout crowd of 1500

3 0

3 years ago

Which expression is equivalent to the given expression

Semenov [28]

Answer:

What do u mean?

Step-by-step explanation:

3 0

3 years ago

Solve for z: 10 = 2 = -25(4z -3)

Anton [14]

Answer:

z = 13/20

Step-by-step explanation:

The steps are in the pictures below!

5 0

3 years ago

Read 2 more answers

Order these Quadratic Functions from the narrowest to widest listed as 1,2,3,4

Kruka [31]

Answer:

From narrowest to widest:

1) $8\cdot x^{2} + 2\cdot x +5$

2) $5\cdot x^{2}-1$

3) $2\cdot x^{2}+4$

4) $\frac{2}{5}\cdot x^{2}+3\cdot x -5$

Step-by-step explanation:

The "width" of the quadratic function is determined by the value of the coefficient associated by the monomial of highest grade, with respect to the primitive of the quadratic function, represented by $y = x^{2}$ , whose ruling coefficient is 1. If the ruling coefficient of the quadratic function is greater than one, then the curve becomes narrower at the same time that the coefficient increases. Otherwise, if the ruling coefficient of the quadratic function is greater than zero and less than 1, then the curve becomes wider at the same time that the coefficient approximates to zero.

Based on this considerations, we proceed to list the quadratic functions from the narrowest to widest:

1) $8\cdot x^{2} + 2\cdot x +5$

2) $5\cdot x^{2}-1$

3) $2\cdot x^{2}+4$

4) $\frac{2}{5}\cdot x^{2}+3\cdot x -5$

Lastly, we include a graphic with all polynomials (tagged as 1, 2, 3, 4) in comparison primitive function (tagged as 0).

4 0

3 years ago