For which system of equations is (2, 2) a solution? A.–3x + 3y = 0
x + 6y = 10B.–2x + 5y = –6
4x – 2y = 4C.5x – 2y = –6
3x – 4y = 2D.2x + 3y = 10
4x + 5y = 18

Answers

Answer 1

Answer: $A.)\n\n-3x + 3y = 0\nx + 6y = 10 \ / *3\n\n-3x + 3y = 0\n3x + 18y = 30\n+------\n21y =30 \ / :21\n \ny=(30)/(21)=(10)/(7)\n\nnot \ true$

$B.)\n\n-2x + 5y = -6 \ / \cdot 2\n4x - 2y = 4\n \n-4x + 10y = -12 \n4x - 2y = 4 \n+-------- \n8y=-8\ /:8\n \ny=-1\n \n not \ true$

$C.\n\n5x - 2y = -6 \ / \cdot 2\n3x - 4y = 2 \n \n 10x - 4y = -12 \n 3x- 4y = 2\n+------\n13x=-11 \ / :13\n \nx=-(11)/(13)\n\n not \ true$

$D.)\n\n2x + 3y = 10\ / \cdot (-2)\n4x + 5y = 18\n\n-4x -6y =-20\n4x + 5y = 18\n+-------\n-y = -2 \ / \cdot (-1)\n \ny=2$

$2x + 3*2 = 10\n \n2x=10-6 \n \n2x=4 \ / :2 \n \n x=2 \n \n true$

Answer 2

Answer: $x=2\ \ \ and\ \ \ y=2\n\nA.\ \ \ \ \ \ x + 6y = 2+6\cdot2=2+12=14 \neq 10\n\nB.\ \ \ \ \ -2x + 5y =-2\cdot2+5\cdot2=-4+10=6 \neq -6\n\nC.\ \ \ \ \ \ \ 5x-2y =5\cdot2-2\cdot2=10-4=6 \neq -6\n\nD.\ \ \ \ \ \ \ 2x + 3y =2\cdot2+3\cdot2=4+3= 10\nand\ \ \ \ \ \ 4x + 5y = 4\cdot2+5\cdot2=8+10=18\n\nAns.\ (2,\ 2)\ is\ a\ solution\ for\ system \ D$

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Which of the following are zero-dimensional or one-dimensional figures.? (Check all that apply)A. Point
B. Angle
C. Ray
D. Plane
E. Segment
F. Line

Answers

Zero dimensional figure = A). Point
One-dimensional figure = C.) Ray E.) Segment F.) Line

Hope this helps!

Final answer:

In geometry, zero-dimensional figures do not extend in any direction and include 'points', while one-dimensional figures extend in one direction and include 'lines', 'segments', and 'rays'. Therefore, the zero or one-dimensional figures in the given options are 'point', 'line', 'segment', and 'ray'.

Explanation:

In geometry, quantities can be zero, one, two, or three dimensional. Zero-dimensional figures are those that do not extend in any direction. The only such geometric figure is a point (Option A). One-dimensional figures, on the other hand, extend in one direction. These include a line (Option F), a segment (Option E), and a ray (Option C), all of which have length but no breadth or height. Therefore, the zero-dimensional or one-dimensional figures from the given options are point, line, segment, and ray.

Learn more about Zero and One Dimensional Figures here:

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Hugh is going to bye school supplies pencils are $0.25 each,notebooks that are $2.50 each,back packs are $32.00 each.hugh bought x notbooks.write an expression for the cost of the notebooks? julio bought a backpack and y pencils. he spent less than $50. write an inequality that shows how much Julio spent.

Answers

32 + 0.25y + 2.50x < 50

That's just my guess. I'm not 100% sure.

What is the simplified expression for the expression below?- 1/5(5х+20) -1/4 (4x– 28)
оооо
О-2х + 3
о-2x – 3
0 -2х – 8
0 -2х + 8

Answers

Answer:

Step-by-step explanation:

- 1/5 of 5x is -1 or just -x and -1/5 of 20 is -4. Then the other one is-1/4 of 4 is -x and -1/4 of -28 is 7. Now combine like terms so -x + -x is -2x and 7+ -4 or 7-4 is 3

A bacteria culture begins with 4 bacteria which double in size every hour. How many bacteria exist in the culture after 8 hours?

Answers

The number of bacteria that exist in the culture after 8 hours will be 1024.

What is an exponent?

Consider the function:

y = a (1 ± r) ˣ

Where x is the number of times this growth/decay occurs, a = initial amount, and r = fraction by which this growth/decay occurs.

If there is a plus sign, then there is exponential growth happening by r fraction or 100r %

If there is a minus sign, then there is exponential decay happening by r fraction or 100r %

A bacteria culture begins with 4 bacteria which double in size every hour.

Then the equation will be

y = 4 (2)ⁿ

Where n is the number of hours.

Then the number of the bacteria that exist in the culture after 8 hours will be

y = 4 (2)⁸

y = 4 x 256

y = 1024

More about the exponent link is given below.

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It begins with 4

After 1 hour= 4 x 2= 8
2 hours= 8 x 2= 16
3 hours= 16 x 2= 32
4 hours= 32 x 2= 64
5 hours= 64 x 2=128
6 hours= 128 x 2=256
7 hours= 256 x 2= 512
8 hours= 512 x 2= 1024

Answer: 1024

Which value is the best estimate of 26% of 259? 50 52 65 88

Answers

It’s 65
I’m not sure how to explain it kinda just is

Answer:

Step-by-step explanation:

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PEACE CONTROLL KYLE

19. Select all the measures that are equivalent to 10 meters. 0. 01 kilometer

B)

1000 millimeters

100 millimeters

0 1000 centimeters

0. 1 kilometer

100 centimeters

Help I don’t know!

Answers

Answer:

10 meters is equivalent to 1000 cm and 0.01 kilometers

Step-by-step explanation:

Final answer:

Measures equivalent to 10 meters are 0.01 kilometer, 1000 centimeters, and 10000 millimeters according to standard unit conversions.

Explanation:

In the topic of unit conversions, it's important to remember that 1 meter (m) is equivalent to 100 centimeters (cm), 1000 millimeters (mm), and 0.001 kilometers (km). So, if we convert 10 meters to these units, we get 1000 centimeters, 10000 millimeters, and 0.01 kilometers. Therefore, the measures equivalent to 10 meters from your given list are: 0.01 kilometer, 1000 centimeters, and 10000 millimeters.