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4 years ago

Can I get some help on #4 plz?

Mathematics

1 answer:

d1i1m1o1n [39]4 years ago

4 0

Answer:38

Step-by-step explanation: hope this helped

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Justin is training for a hamburger eating competition. He is eventually able to eat 15 hamburgers in 10 minutes. What is justin’

user100 [1]

Answer:

1.5 hamburgers per minute

Step-by-step explanation:

In 10 minutes, Justin can eat 15 burgers.

In 1 minute, Justin can eat 15/10 burgers.

15/10 = 1.5

7 0

3 years ago

Ms. Swanson asked the question, "How does knowing the fact 6 × 5 6×5 help you find 60 × 500 60×500?" Maria answered, "I know 6 ×

Allushta [10]

Answer:

Correct answer is 30,000

Step-by-step explanation:

From multiplication :

6 * 5 = 30

Now moving to:

60 * 500

Number of ending zeros in both values = 3 ; (000)

This 3 0's will be placed at the end of the result of multiplying 6 by 5

Hence,

6 * 5 = 30

60 * 500 = 30+000 = 30,000

Hence, 60 * 500 = 30000

3 0

3 years ago

Match solutions and differential equations. Note: Each equation may have more than one solution. Select all that apply. (a) 7y''

Nonamiya [84]

Answer:

a- $e^x,e^{-x}$

b- $x^{-2}$

c- $x^3$

Step-by-step explanation:

a.7 y''-7 y =0

Auxillary equation

$D^2-1=0$

$(D-1)(D+1)=0$

D=1,-1

Then , the solution of given differential equation

$y=e^x,y=e^{-x}$

2. $7x^2y''+14xy'-14 y=0$

Y= $y=x^3$

$y=3x^2$

$y''=6x$

Substitute in the given differential equation

$42x^3+42x^3-14x^3\neq 0$

Hence, $x^3$ is not a solution of given differential equation

$e^x,e^{-x}$ are also not a solution of given differential equation.

y= $x^{-2}$

$y'=-2x^{-3}$

$y''=6x^{-4}$

Substitute the values in the differential equation

$7x^2(6x^{-4})+14x(-2x^{-3})-14 x^{-2}$

= $42x^{-2}-28x^{-2}-14x^{-2}=0$

Hence, $x^{-2}$ is a solution of given differential equation.

c. $7x^2y''-42y=0$

$y=x^3$

$y'=3x^2$

$y''=6x$

Substitute the values in the differential equation

$42x^3-42x^3=0$

Hence, $x^3$ is a solution of given differential equation.

a- $e^x,e^{-x}$

b- $x^{-2}$

c- $x^3$

6 0

4 years ago

Read 2 more answers

Angles L and M are supplementary. If m ∠ L = (x+2)° and m ∠ M = (x-6)°. What is the value of x?

marta [7]

The value of X is 92.

please see the attached picture for full solution

Hope it helps

7 0

3 years ago

What is the difference between the mean and the median of the following set of numbers {7, 28, 9, 11, 5}

mr_godi [17]

Answer:

Mean - 12

Median - 9

Mean - Median = 3

Step-by-step explanation:

math

8 0

2 years ago