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11Alexandr11 [23.1K]
3 years ago
6

I have a few questions: 1. Jean runs 3.5 miles per week while Janell runs 13.3 miles per week. Janell runs how many times the nu

mber of miles that Jean runs? 2. Cora is saving for college. The first year of tuition is $7,485.00. She has a year to save this amount of money. How much should she save per month so she can meet her goal?
Mathematics
1 answer:
Katen [24]3 years ago
8 0
1 Janell runs 3.8 times the number of mines jean runs.
2 Cora would need to save $623.75 each month to reach her goal of $7,485 in a year
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12

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3 years ago
Which of the following relations is a function?
MrMuchimi

Answer:

<em>A. (1,4), (-5, 2), (7, 1), (-8, 2)</em>

Step-by-step explanation:

<u>Definition of a Function</u>

A function is a relation between an input and an output set of values with the condition that every element in the input set relates only to one element in the output set.

From the four options presented in the question, we must select the only one that doesn't repeat the value for x and has a different value of y.

For example, the set

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The correct choice is:

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2 years ago
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gavmur [86]
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3 years ago
A waterfall has a height of 900 feet. A pebble is thrown upward from the top of the falls with an initial velocity of 24 feet pe
aliya0001 [1]

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The pebble will hit the ground 8.29 second after it is thrown.

Step-by-step explanation:

Given that,

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When the pebble hit the ground, the height of the pebble will be zero.

So putting h=0 in the given equation.

0 = -16t²+24 t+900

⇒-4(4t²-6t-225)=0

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Applying quadratic formula t=\frac{-b\pm\sqrt{b^2-4ac}}{2a}, here a=4, b= -6 and c= -225.

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⇒ t = 8.29, -6.79

Since time can not negative.

∴t=8.29 seconds.

The pebble will hit the ground 8.29 second after it is thrown.

7 0
3 years ago
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