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3 years ago

Select the sets that are not functions.

Mathematics

1 answer:

DedPeter [7]3 years ago

5 0

Answer:

Sets D, E

Step-by-step explanation:

Sets D and E both have repeated x-values , thus making them a relation not a function.

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A car travels a distance of 500 km in a time of 5 hours. <br> What is the car's average speed?

FrozenT [24]

Answer:

100km/h

Step-by-step explanation:

The formula for speed is:

v = x / d = 500/5 = 100km/h

7 0

3 years ago

Please help! I really need help...

Sholpan [36]

Answer:

$3y^{2}+2y-11$

Step-by-step explanation:

we have

$(-y^{2}-4y-8)-(-4y^{2}-6y+3)$

Eliminate the parenthesis

$-y^{2}-4y-8+4y^{2}+6y-3$

Group terms that contain the same variable

$-y^{2}+4y^{2}-4y+6y-8-3$

Combine like terms

$3y^{2}+2y-11$

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4 years ago

60% of the students at a school walk to school. Work out the percentage of the students who do not walk

Shkiper50 [21]

Answer:

40%

Step-by-step explanation:

everything is 100% so you have to

100-60=40

40% of people do not walk to school

3 0

2 years ago

Lee's family had a garden in the shape of a right triangle. the total area of the garden is 16 square feet. if they expand the g

lana [24]

Area of right-angled triangle is given by;

Area, A = 1/2 *b*h, Where b=base, h=height

Therefore,

A1 = 1/2bh = 16 in^2
A2 = 1/2 (2b)(2h) = 2bh

Ratio of increase = A2/A1 = {2bh}/(1/2bh} = 4 (the area is increased 4 times)
The,
A2 = 4*16 = 64 in^2
Therefore,
The area is increased by (64-16) = 48 in^2

5 0

3 years ago

Find Vertical Asymptote(s) for y= (4x^2 +1) / (x^2 -1)

Novay_Z [31]

Answer:

Vertical asymptotes are at $x=-1\ and\ x=1$ .