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2 years ago

6

Which must be true of a quadratic function whose vertex is the same as its y-intercept?

1 answer:

BaLLatris [955]2 years ago

7 0

Answer: Choice A

The axis of symmetry for the function is x = 0.

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Explanation:

The vertex is on the axis of symmetry. Since the vertex is on the y axis, this means the y axis itself is the axis of symmetry. The y axis is represented by the equation x = 0. Every point on the y axis has an x coordinate of 0. Example points are (0,2) and (0,5).

This parabola may have 0 roots, 1 root, or 2 roots.

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a grandfather is 8 times older than his grand daughter. in 8 years the grandfather will be 5 times as older as his grand daughte

mash [69]

Answer:

256 it's the answer

Step-by-step explanation:

HOPE THAT HELPS!!!!!!!!

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3 years ago

A person on tour has dollar 360 for his daily expenses. If he extends his tour for 4 days, he has to cut down his daily expenses

Greeley [361]

Answer:

The original duration of the tour is 18 days.

Step-by-step explanation:

Let

the number of days spent be T

Daily expenses be D

Initially ,

total tour expenses was 360

$D \times T=360$

$D = \frac{360}{T}$ -------------(1)

If he extends his tour for 4 days, he has to cut down his daily expenses by dollar 3

$(D + 4) \cdot(T -3) = 360$ ---------------(2)

Expanding the eqaution(2)

DT-3D + 4T -12 = 360

Substituting the value of D

$(\frac{360}{T})T -3( \frac{360}{T}) + 4T -12 = 360$

$(\frac{360}{T})T -3( \frac{360}{T}) + 4T= 360 + 12$

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$360 - ( \frac{1080}{T}) + 4T= 372$

$( \frac{1080}{T}) + 4T= 372 - 360$

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Solving the quadratic equation we get

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4 0

3 years ago

A jar containing only nickels and dimes contains a total of 60 coins. The value of all the coins in the jar is $4.45. Solve by e

borishaifa [10]

Answer: 31 nickels and 29 dimes

<u>Step-by-step explanation:</u>

Nickels (.05): x

Dimes (.10): y

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-y = -29

y = 29

Next, substitute "29" for "y" into either equation and solve for "x":

x + y = 60

x + 29 = 60

x = 31

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3 years ago

Haley has five times as many stuffed animals as she does dolls. Her brother has 18 more video games than Haley has stuffed anima

34kurt

Answer:

93

Step-by-step explanation:

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3 years ago

Read 2 more answers

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pentagon [3]

Answer:

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Step-by-step explanation:

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4 0

4 years ago