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1 year ago

Which equation represents the data shown in the table below?

Mathematics

1 answer:

spin [16.1K]1 year ago

8 0

Answer:

B. y = x +3

Step-by-step explanation:

The fastest way to find this answer is to substitute offered values of x and y into the given equations to see if they are true.

<h3>Substitution</h3>

Using the first line in the table, (x, y) = (2, 5), we have ...

A 5 = 2(2) . . . . false

B 5 = 2 +3 . . . . true

C 5 = 3(2) . . . . false

D 5 = 2 +1 . . . . false

<em>Additional comment</em>

Checking answer choices against the problem statement is one of many possible strategies for answering multiple-choice questions.

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PLEASE help I will mark you BRAINLIEST!!! <br>

koban [17]

Answer:

Use shell method

And chose the cross section perpendicular to the x-axis

8 0

3 years ago

Find the value of n.<br> (n. 5). 4 = (4.5). 2<br> Enter

stepan [7]

Answer:

n=2

Step-by-step explanation:

8 0

3 years ago

x + y = 42, xy = 108 then what is x and y. Is there any (non-quadratic)formula for finding this instead of the process of elimin

charle [14.2K]

Answer:

when x = 39.25, y = 2.75

when x = 2.75, x = 39.25

Step-by-step explanation:

use substitution method

x+y = 42 ------ (1)

xy = 108 ------ (2)

from (1) ,

x+y = 42

y = 42-x ------ (3)

substitute (3) into (2)

xy = 108

x( 42-x ) = 108

42x - x² = 108

-x² + 42x - 108 = 0

x² - 42x + 108 = 0

use the following formula to solve the value of x:

$i) \: x = \frac{ - b + \sqrt{ {b}^{2} - 4ac } }{2a} \: \\ ii) \: x = \frac{ - b - \sqrt{ {b}^{2} - 4ac } }{2a}$

a = 1

b = -42

c = 108

$i) \: x = \frac{ - b + \sqrt{ {b}^{2} - 4ac} }{2a}$

$x = \frac{ - ( - 42) + \sqrt{( - 42) {}^{2} - 4(1)(108)} }{2(1)}$

$x = \frac{42 + \sqrt{1764 - 432} }{2}$

$x = \frac{42 + \sqrt{1332} }{2}$

$x = \frac{42 + 6 \sqrt{37} }{2}$

$x = 21 + 3 \sqrt{37}$

$x = 39.25$

$ii) \: x \: \frac{ - b - \sqrt{ {b}^{2} - 4ac} }{2a}$

$x = \frac{ - ( - 42) - \sqrt{( - 42) {}^{2} - 4(1)(108} }{2(1)}$

$x = \frac{42 - \sqrt{1764 - 432} }{2}$

$x = \frac{42 - \sqrt{1332} }{2}$

$x = \frac{42 - 6 \sqrt{37} }{2}$

$x = 21 - 3 \sqrt{37}$

$x = 2.75$

the 2 values of x are x = 39.25 and x = 2.75

substitute x = 39.25 into (3)

y = 42-x

y = 42-39.25

y = 2.75

substitute x = 2.75 into (3)

y = 42-x

y = 42-2.75

y = 39.25

when x = 39.25, y = 2.75

when x = 2.75, x = 39.25

7 0

3 years ago

Europe and North America are moving apart at 2 cm per year. Find (or estimate) the width of the North Atlantic Ocean and determi

ad-work [718]

Width = 2,848 km = 2,848,000 m
2,848,000 m * 100 = 284,800,000 cm
If Europe and North America are moving apart at 2 cm per year:
284,000,000 : 2 = 142,400,000 years
Answer: The North Atlantic Ocean began to form 142,400,000 years ago.

3 0

3 years ago

Last week, Mel ate 3 apples, 2 bananas, and 4 oranges. Find the ratio of bananas to the total of fruit.

anyanavicka [17]

Answer:

2:9

Step-by-step explanation:

there are 2 bananas.

the total amount of fruit is 9 because 2+4+3= 9.

the ratio is 2:9 because there are 2 bananas and 9 fruits in total.

2:9 cannot be simplified any smaller.

4 0

3 years ago

Read 2 more answers