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3 years ago

Which statements about the system are true? Check all that apply.Y = x – 4 3y – x = –7

Mathematics

1 answer:

nirvana33 [79]3 years ago

6 0

The solutions are x = 2.5, y = -1.5, but what are the statements?

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Does -2(11-12x)=-4(1-6x) does it have one solution or no solution or many solutions

VARVARA [1.3K]

Answer:

no solutions

Step-by-step explanation:

-2(11-12x)=-4(1-6x)

Distribute

-22 +24x = -4 +24x

Subtract 24x from each side

-22 +24x-24x = -4 +24x-24x

-22 = -4

This is never true, so there are no solutions

6 0

3 years ago

Consider the differential equation 4y'' â 4y' + y = 0; ex/2, xex/2. Verify that the functions ex/2 and xex/2 form a fundamental

Kazeer [188]

Check the Wronskian determinant:

$W(e^{x/2},xe^{x/2})=\begin{vmatrix}e^{x/2}&xe^{x/2}\\\frac12e^{x/2}&\left(1+\frac x2\right)e^{x/2}\end{vmatrix}=\left(1+\frac x2\right)e^x-\frac x2e^x=e^x\neq0$

The determinant is not zero, so the solutions are indeed linearly independent.

7 0

3 years ago

Find the sum of the numbers as the product of their GCF and another sum. 35 + 49

AlladinOne [14]

Answer:

84 is what you get when you add them

14 is what you get when you factor their GCF then add

hope this helps plz mark brainliest

3 0

3 years ago

In the diagram below what is the relationship between the number of rectangles in the perimeter of the figure they form?

Wewaii [24]

Answer:

the correct answer is the third one. (1, 16), (2, 20), (3, 24)

Step-by-step explanation:

A perimeter is a path that surrounds a two-dimensional shape.

In the first case, 1 rectangle, the perimeter is the sum of all the sides:

Perimeter = 6 + 2 + 6 + 2 = 16

In the second case, 2 rectangles, the perimeter is the sum of all external sides:

Perimeter = 6 + 2 + 2 + 6 + 2 + 2 = 20

In the third case, three rectangles, the perimeter is the sum of all external sides:

Perimeter = 6 + 2 + 2 + 2 + 6 + 2 + 2 + 2 = 24

In none of the cases, you take into consideration the interal sides. Just the external sides, so the correct answer is the third one.

8 0

3 years ago

19. What are the extremes of the following proportion? 3⁄15 = 12⁄60

insens350 [35]

4 is your answer

3 x 4 = 12
15 x 4 = 60

so 4 is the amount
hope this helps

8 0

3 years ago