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Tom [10]
3 years ago
11

Need help asap!!! plzz

Mathematics
1 answer:
kap26 [50]3 years ago
8 0

Answer:

y=81

Step-by-step explanation:

45/30 = y/54

cross multiply 45*54=2430

30*y=30y

divide

2430÷30y

=81

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A man starts at a point A and walks 18 feet north. He then turns and walks due east at 18 feet per second. If a searchlight plac
34kurt

Answer:

1/10 per sec

Step-by-step explanation:

When he's walked x feet in the eastward direction, the angle Θ that the search light makes has tangent

tanΘ = x/18

Taking the derivative with respect to time

sec²Θ dΘ/dt = 1/18 dx/dt.

He's walking at a rate of 18 ft/sec, so dx/dt = 18.

After 3seconds,

Speed = distance/time

18ft/sec =distance/3secs

x = 18 ft/sec (3 sec)

= 54ft. At this moment

tanΘ = 54/18

= 3

sec²Θ = 1 + tan²Θ

1 + 3² = 1+9

= 10

So at this moment

10 dΘ/dt = (1/18ft) 18 ft/sec = 1

10dΘ/dt = 1

dΘ/dt = 1/10 per sec

8 0
3 years ago
The 7 a.m. flight from Dallas to Chicago is on time 75% of the time. Fran created this spinner to simulate the scenario.
Elena-2011 [213]

Answer:

CORRECT OPTION is (C) The flight will be late on one of the three days.

Step-by-step explanation:

The 7am flight from Dallas to Chicago is on time 75% of the time.

A spinner with four sections was created by Fran to simulate this scenario.

Since the 4 sections were equal, it means each section was 25% of the spinner.

3 sections were shaded. That implies 25 × 3 = 75% of the spinner was shaded area.

This coincides with the 75% probability that the flight is on time on a given day.

In other words, if the spinner's pointer lands on shaded area, the flight will be on time. If the pointer lands on an unshaded portion, the flight will be late.

Now Fran spun the spinner 3 times so she has 3 outcomes. The outcomes are:

- Shaded   - Shaded   - Unshaded

CORRECT OPTION is (C) The flight will be late on one of the three days.

4 0
3 years ago
How can you write 5/7 as the sum of fraction two different ways
telo118 [61]
One solution could be:

2/7 + 3/7 = 5/7

Another could be:

4/14 + 6/14 = 10/14 = 5/7
3 0
3 years ago
Read 2 more answers
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krek1111 [17]
If you skip a warm up, you increase the greater change of oxygen dept.
Hope this helps!
@SamSamySamantha!
6 0
3 years ago
Please help Simplify.<br> X/7x+x^2
KiRa [710]

Answer:

Can you maybe elaborate the question with the help of brackets I guess ...?

It is difficult to understand the question this way .

8 0
2 years ago
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