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3 years ago

Plz help on these problems.

Mathematics

1 answer:

USPshnik [31]3 years ago

7 0

Answer:

see below

Step-by-step explanation:

1) 4

2) 1 or -1

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What is the equation of the graph below? A graph shows a parabola that opens up and crosses the x axis at negative two and negat

Anastaziya [24]

Answer:

$y=(x+3)^{2} -1$

Step-by-step explanation:

General equation of a parabola that opens up is $y=a(x-h)^{2} +k$ , a>0

So equation becomes $y=(x-h)^{2} +k$ which implies option A and option B can never be true for this parabola.

Also this parabola's vertex lies in 3rd quadrant where coordinates of both x and y will be negative.

So, the equation of parabola will be of the form $y=(x+h)^{2} - k$

Hence, option 4 that is $y=(x+3)^{2} -1$ is correct.

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3 years ago

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Are gas bills, water bills, sewage bills, electricity bills fixed or variable expenses

ratelena [41]

The answer is variable expenses.

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4 years ago

Factorise a.x3+4.a.x

Contact [7]

Answer:

${ax}^{3} + 4ax \\$

factorise out a and x :

${ \boxed{answer{= ax( {x}^{2} + 4) }}}\\ but \: farther \: more : \\ = ax( {x}^{2} + {2}^{2} )$

but from general factorization:

${ \boxed{( {a}^{2} + {b}^{2}) = {(a + b)}^{2} - 2ab }}$

a » x

b » 2

therefore:

$= ax \{ {(x + 2)}^{2} - 2(x)(2) \} \\ \\ = { \boxed{ \boxed{ax( {x + 2)}^{2} - 4x }}}$

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3 years ago

Mr. Walker is looking at the fundraiser totals for the last five years.

balu736 [363]

$880, $896, $914, $925, and $963

median = $914
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$915.6 - $914 = $1.6

so mean is greater than median $1.6

answer is B. second choice
<span>The mean is $1.60 greater.</span>

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4 years ago

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Answer:

2.8÷4

Step-by-step explanation:

if 2.8 is the 4th lap, you have to divide it by 4 to get the 1st lap.

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3 years ago