3 years ago

In order to tell if a graph is a function it must

1 answer:

5 0

You can use the vertical line test (the blue lines on the drawing) and if the other end or if any part of the line touches the blue line, then it isn’t a function.

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Rewrite f(x) into vertex form by completing the square f(x)=−x2+8x+9

GalinKa [24]

Answer:

vertex = ( 4 , 25 )

Step-by-step explanation:

given a parabola in standard form y = a x 2 + b x + c x ; a ≠ 0

then the x-coordinate of the vertex is

X vertex=-b/2a

y=-x2+8x+9 with a=-1 b=8 c=9

X vertex= -8/-2=4

substitute the value on the equation

Y vertex = -(4)squared+8(4)+9=25

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3 years ago

Can some one help me in this :)

nadezda [96]

Answer:

16m/s

Step-by-step explanation:

distance travelled from L to M = 6 x 10 = 60m

distance travelled from M to N = 160 - 60 = 100m

time taken to travel from M to N = 100/25 = 4 seconds

average speed = total distance / total time = 160m / (6 + 4) seconds = 16m/s

hope that helps!

this is a question on speed, distance and time. I have a formula for it up in my insta page (learntionary) if you need it :)

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3 years ago

Read 2 more answers

A local animal shelter has 27 dogs and 23 cats. What percent of the animals are dogs?

SVEN [57.7K]

Answer:

54%

Step-by-step explanation:

total animals=27+23=50

$dogs=\frac{27}{50} \times100=54$

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3 years ago

The measure of one angle of a right triangle is 38∘ more than the measure of the smallest angle. Find the measures of all three

Semmy [17]

Answer:

Step-by-step explanation:

the smallest angle

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4 years ago

What percentage is the fraction 2/4 equal to? 30% 20% 50% 40%

zheka24 [161]

So yeah/so basically... (just please choose one)

The answer is... (drumroll please)

...50%

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3 years ago