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adelina 88 [10]
3 years ago
7

Robert can swim the first 50 meters of a race in 1 minute. Then he slows down by 12 seconds for each of the next 50 meters of a

race. How long will it take Robert to swim a 400 meter race?
Mathematics
1 answer:
yaroslaw [1]3 years ago
5 0
Since you already know that the first 50 meters took 1min you can subtract
400meters-50meters=350meters
350meters÷50meters=7minutes
It increases at 12 sec./min for 7mins
1.12,1.24,1.36,1.48,2.00,2.12,2.24= 11.56+1.00=12.56min
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MaRussiya [10]
<h3 /><h3>3(1 - 3x) =  - 7 + x \\ 3 - 9x =  - 7    + x \\ 3 + 7 = x + 9x \\ 10 = 10x \\ x =  \frac{10}{10}  \\ x = 1</h3>

<em>-</em><em> </em><em>BRAINLIEST</em><em> answerer</em><em> ❤️</em><em>✌ </em>

8 0
3 years ago
A security guard checked what fraction of a parking lot was filled at different times throughout the day and recorded the data i
Luda [366]

Answer:

lol i did the same thing in class

Step-by-step explanation:

6 0
3 years ago
The focus of a parabola is (-10, -7), and its directrix is x = 16. Fill in the missing terms and signs in the parabola's equatio
avanturin [10]
Answer: (y-3)^2= 52(x+7)

The focus is (-10, -7) and the directrix is x=16. The y-coordinate of the vertex should be same as the focus(k=-7). Then the x-coordinate of the vertex would be:
p + (-10)=  16 - p
2p= 16 + 10
p=26/2= 13

The x-coordinate of the vertex would be:
h= p+ (-10)
h= 13 - 10= 3

The vertex coordinate would be: (h, k)= (3, -7)
For a vertex (h, k), the formula for equation would be 
(y-k)^2=4 p(x-h)
(y-3)^2= 4*13(x--7)
(y-3)^2= 52(x+7)
7 0
3 years ago
Ce
pishuonlain [190]

The commitment adherence percentage for the week will be 53%.

<h3>How to compute the percentage?</h3>

It was stated that Amy was scheduled to service 17 intervals this week. She picked up 4 more intervals during the week.

The following can be deduced based on the information that are given:

Total intervals = 17

Taken intervals = 4+ 3 + 2 = 9

Therefore, the commitment adherence percentage for the week will be:

= 9/17 × 100

= 53%

Learn more about percentages on:

brainly.com/question/24304697

#SPJ1

8 0
1 year ago
PLEASE HELP ME WITH QUESTIONS #1 and #2 ASAP GOD BLESS YOU IF YOU DO!!!
tino4ka555 [31]

Answer:

1. Yes

2. No

Step-by-step explanation:

Question 1:

The x is going in a constant rate of 1. While the y is going up in the constant rate of 5, so it is linear.

Question 2:

The x is going in a constant rate of 1. While the y is not going in the constant rate, so it is nonlinear.

3 0
3 years ago
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