All categories

3 years ago

Please help!!! Will mark brainliest!

Mathematics

1 answer:

Ksenya-84 [330]3 years ago

5 0

Answer:

4, 11

Step-by-step explanation:

Q# 13 :

Let the first number be 'x'

the 2nd number would be ' x + 7'

x + x + 7 = 15

2x= 15-7

x= 8/2

x= 4

2nd number: x + 7

= 4+7

= 11

You might be interested in

Solve the differential equation. y' + 5xey = 0.

galben [10]

Answer:

The solution is $y = - ln(\frac{5}{2}x^{2} + C)$

Step-by-step explanation:

To solve the differential equation, we will find $y$

From the given equation, y' + 5xey = 0.

That is, $y' + 5xe^{y} = 0$

This can be written as

$\frac{dy}{dx} + 5xe^{y} = 0$

Then,

$\frac{dy}{dx} = - 5xe^{y}$

$\frac{dy}{e^{y}} = - 5x dx$

Then, we integrate both sides

$\int {\frac{dy}{e^{y}}} =\int {- 5x dx}$

$\int {e^{-y}dy }} =\int {- 5x dx}$

Then,

$-e^{-y} = -\frac{5}{2}x^{2} + C$

$e^{-y} = \frac{5}{2}x^{2} + C$

Then,

$ln(e^{-y}) = ln(\frac{5}{2}x^{2} + C)$

Then,

$-y = ln(\frac{5}{2}x^{2} + C)$

Hence,

$y = - ln(\frac{5}{2}x^{2} + C)$

5 0

3 years ago

I need help final exam will mark brainliest...

Verdich [7]

5 calories per minute
1/2 is your slope.

8 0

3 years ago

Read 2 more answers

Kaitlin purchased a prepaid phone card for $30. Long distance calls cost 14 cents a minute using this card. Kaitlin used her car

Delvig [45]

Subtract to find out how much she spent:

30 - 27.90 = 2.10

Divide that by the cost per minute:

2.10 / 0.14 = 15

The call was 15 minutes.

6 0

3 years ago

What is the range of the function ()=12−2 f ( x ) = 1 2 x - 2 when the domain is {2, 4, 6}?

lina2011 [118]

Answer:

{-1, 0, 1}

Step-by-step explanation:

If your function is f(x) = 1/2x -2, then the range is found by executing the function on each of the domain values:

f(2) = 2/2 -2 = -1

f(4) = 4/2 -2 = 0

f(6) = 6/2 -2 = 1

The range is {-1, 0, 1}.

7 0

3 years ago

Identify the angle relationship. Which equation can be used to solve for x?<br> (4x + 1)<br> 170

Mice21 [21]

Answer:

680x + 170

Step-by-step explanation:

calculate the product

4 $x$ x170 +170=

680x+ 170

4 0

3 years ago