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3 years ago

Is the following relation a function? {(0.3, 0.6), (0.4, 0.8), (0.3, 0.7), (0.5, 0.5)}

Mathematics

1 answer:

Readme [11.4K]3 years ago

7 0

Answer:

Step-by-step explanation:

To be a function, the x values must correspond to one and only one y value.

In the coordinates given, (0.3, 0.6) and (0.3, 0.7) have the same x- value.

That means that they cannot be a function.

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Find Slope and Y-intercept

Ksenya-84 [330]

Answer:

slope = -5/1

y-intercept = (0, -34)

Step-by-step explanation:

slope m = change in y ÷ change in x

= (-9 - -4) ÷ (-5 - -6)

= -5 ÷ 1

= -5/1

y = mx + b ⇒ y = -5x + b

substitute one of the points

-4 = (-5 x -6) + b

-4 = 30 + b

b = -34

Therefore, y-intercept = (0, -34)

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How does the graph of g(x) = 3X – 2 compare to the graph of f(x) = 3X?

Marrrta [24]

Answer:

The graph of g(x) is a translation of f(x) 2 units down.

Step-by-step explanation:

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3 years ago

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Find number of sides of a regular polygon if each of its exterior angle is 36.

irinina [24]

Answer:

10 sides,that is, a decagon or 10gon

Step-by-step explanation:

If the exterior angle is 36° then numbers of sides=

$36 = \frac{360}{n}$

Therefore

n=360°÷36°=10

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2 years ago

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10 times as many as 100

mr Goodwill [35]

<span>10 times as many as 100
this simply mean 10<span>100
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3 years ago

good morning fellow brainsters please help me i’m tired and i just drank a four loko... can’t think. will give 15 points

borishaifa [10]

Answer:

7. $x=3$

8. l=11cm and w=7 cm

9. $x-5\ge12$

10. $\frac{x}{3}\le15$

Step-by-step explanation:

Question 7.

The given expression is:

$12-3(2x+1)=7x-3(7+x)$

Expand the parenthesis using the distributive property:

$12-6x-3=7x-21-3x$

Group similar terms:

$-6x-7x+3x=-21+3-12$

Simplify

$-10x=-30$

Divide both sides by -10

$x=3$

Question 8:

Let the width of the rectangle be; $w$

The length of the rectangle is $l=w+4$

The perimeter is given as: $P=2(l+w)$

Given that the perimeter P=36, then:

$36=2[(w+4)+w)]$

$\implies 36=2(2w+4)$

Divide both sides by 2:

$\implies 18=2w+4$

Subtract 4 from both sides:

$\implies 18-4=2w$

$\implies 14=2w$

$\implies w=7$

The dimensions of the rectangle is: w=7 cm and l=7+4=11cm

Question 9

Let the number be x.

"5 fewer than the number" is written as $x-5$

"5 fewer than a number is at least 12" becomes

$x-5\ge12$

Question 10:

Let the number be x.

The quotient of a number and 3 is written as:

$\frac{x}{3}$

The quotient of a number and 3 is no more than 15 is written as;

$\frac{x}{3}\le15$

4 0

3 years ago