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3 years ago

Find the y-intercept for the parabola defined by

Mathematics

2 answers:

professor190 [17]3 years ago

6 0

(0,-1) is the correct answer

igomit [66]3 years ago

4 0

Answer:

(0, -1)

Step-by-step explanation:

The y-intercept is where the graph crosses the y-axis when x = 0. Simply substitute <em>x </em>for 0 and solve for <em>y</em>:

y = -10(0)² - 11(0) - 1

y = 0 - 0 - 1

y = -1

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. A theater has 40 rows of seats, where the first row has 27 seats and each subsequent row has

MAXImum [283]

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6 0

3 years ago

6/30=3/15 true or false

Dennis_Churaev [7]

Answer: True

Step-by-step explanation: This is because they are equivalent fractions

Hope this helps and have a nice day

4 0

3 years ago

Read 2 more answers

Pratap puri rowed 10 miles down a river in 2 hours, but the return trip took him 2 and one half hours. Find the rate pratap can

N76 [4]

Answer:

<em>Rate of Pratap in still water is 4.5 miles/hour and rate of current is 0.5 miles/hour.</em>

Step-by-step explanation:

Pratap Puri rowed 10 miles down a river in 2 hours, but the return trip took him 2.5 hours.

We know that, $Speed = \frac{Distance}{Time}$

So, the <u>speed of Pratap with the current</u> will be: $(\frac{10}{2})miles/hour = 5$ miles/hour

and the <u>speed of Pratap against the current</u> will be: $(\frac{10}{2.5})miles/hour = 4$ miles/hour.

Suppose, the rate of Pratap in still water is $x$ and the rate of current is $y$ .

So, the equations will be........

$x+y= 5 .............................. (1)\\ \\ x-y=4 .............................. (2)$

Adding equation (1) and (2) , we will get......

$2x=9\\ \\ x=\frac{9}{2}= 4.5$

Now, plugging this $x=4.5$ into equation (1), we will get.....

$4.5+y=5\\ \\ y=5-4.5 =0.5$

Thus, Pratap can row at 4.5 miles per hour in still water and the rate of the current is 0.5 miles/hour.

6 0

4 years ago

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Mrrafil [7]

1. Line a and line b
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3. Ray WY and Ray WZ
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3 years ago

The distance to school and back is 5.28 miles. How far is it one way?

dusya [7]

I really believe the correct answer is 2.64 miles but if I am wrong I truly apologize

7 0

3 years ago

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