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3 years ago

1.6.PS-20

Mathematics

1 answer:

forsale [732]3 years ago

3 0

The answer is 44 and if he deposits it is 33 dollars:

11x4

1x4=4

So 11x4=44

And if he deposits 11 he will have 33

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Sketch the graph of y=x^2-4x+3

NISA [10]

Answer:

see attached graph

Step-by-step explanation:

Given equation: $y=x^2-4x+3$

Standard form of a quadratic equation: $y=ax^2+bx+c$

where $c$ is the y-intercept

If $a > 0$ then the parabola opens upwards.

If $a < 0$ then the parabola opens downwards.

Therefore, the y-intercept of the graph is (0, 3)

To find the x-intercepts, factor the equation:

$y=x^2-4x+3$

$\implies y=x^2-x-3x+3$

$\implies y=x(x-1)-3(x-1)$

$\implies y=(x-3)(x-1)$

Therefore, the x-intercepts of the graph are (3, 0) and (1, 0)

To determine the vertex, differentiate the equation:

$\implies \dfrac{dy}{dx}=2x-4$

Set to zero and solve for x:

$2x-4=0 \implies x=2$

Substitute $x=2$ into the original equation and solve for y:

$\implies y=(2)^2-4(2)+3=-1$

Therefore, the vertex (or turning point) is at (2, -1)

8 0

3 years ago

What is 30% of 1/2 of 20?

notka56 [123]

Answer:

Step-by-step explanation:

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3 years ago

If a school of 400 people remained open, predict how many days it would take for half of the people to become infected. Justify

nignag [31]

Answer:

At Day 27, approximately 50.2% of the population is uninfected and that

means that approximately half of the population has been infected.

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3 years ago

Today Carly’s bank account contains $96. Yesterday she made a withdrawal of $33. What was the bank account balance before Carly

Artist 52 [7]

96 plus 33 equals 129

so the answer is $129 because she has 96 dollars now but if you add the amount of money she took out to the amount she had before then you will get the amount of money before the withdrawal

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3 years ago

Help!!!!!!!!!!!!!!!!!!!!

zepelin [54]

The answer would be D

3 0

3 years ago