All categories

4 years ago

the second of two number is 6 more than 3 times the first. The sum of the two number is 30. Find the two numbers

Mathematics

1 answer:

pantera1 [17]4 years ago

7 0

Answer:

kinda hard

Step-by-step explanation:

You might be interested in

Sue has taken four exams so far in her History course. Her scores are 84.0, 78.2, 93, and 87.5. What is the average of these sco

Nataliya [291]

Answer: 85.7

Step-by-step explanation:

3 0

3 years ago

I'm struggling fr now, pls can you help me answer these questions using the y= mx+ c method thanks!

Phoenix [80]

Answer:

Examination of the equation shows (graph):

x = 0, y = .5

Then .5 = c gives us the value of c giving

y = m x + .5 is our equation

Using y = 0, x = -1 gives

o = -1 * m + .5

m = .5

y = .5 x + .5 for the final equation

Check:

At x = 5, y = 3

3 = .5 (5) + .5 = 3

4 0

2 years ago

,mcwencjkwdncdjcdevc

adelina 88 [10]

Not a sufficient enough question, pls elaborate.

6 0

3 years ago

The rate at which the temperature is dropping is 6t 5t2 degrees Celsius per hour t hours after sundown. How much had the tempera

Whitepunk [10]

Using a differential equation, it is found that the temperature dropped 72 degrees Celsius between sundown and 3 hours after sundown.

<h3>What is the differential equation that describes the temperature in t hours after sundown?</h3>

The rate at which the temperature is dropping is $6t + 5t^2$ degrees Celsius per hour t hours after sundown, hence the <em>differential equation</em> is:

$\frac{dT}{dt} = 6t + 5t^2$

Applying <em>separation of variables</em>, we find the solution as follows:

$\frac{dT}{dt} = 6t + 5t^2$

$dT = (6t + 5t^2) dt$

$\int dT = \int (6t + 5t^2) dt$

$T(t) = \frac{5t^3}{3} + 3t^2 + T(0)$

In which T(0) is the temperature at sundown.

In 3 hours, the change will be of:

$C = T(3) - T(0) = \frac{5t^3}{3} + 3t^2|_{t = 3}$

Hence:

$\frac{5(3)^3}{3} + 3(3)^2 = 45 + 27 = 72$

The temperature dropped 72 degrees Celsius between sundown and 3 hours after sundown.

You can learn more about differential equations at brainly.com/question/24348029

5 0

2 years ago

What is the slope for M(4,-8 negative) N(6,-1 negative)

labwork [276]

Answer:

m=7/2

Step-by-step explanation:

6 0

3 years ago

the second of two number is 6 more than 3 times the first. The sum of the two number is 30. Find the two numbers​

the second of two number is 6 more than 3 times the first. The sum of the two number is 30. Find the two numbers