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NISA [10]
3 years ago
8

If you help me with this I will give brainliast but hurry up!!!!!

Mathematics
1 answer:
mestny [16]3 years ago
5 0

Answer:

4 chapters

Step-by-step explanation:

1 1/2 divided by 3/8 is 4.

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In order to safely land, the angle that a plane approaches the runway should be no more than 15°. A plane is approaching Ottawa
belka [17]

9514 1404 393

Answer:

  9.5°, yes

Step-by-step explanation:

The relevant trig relation is ...

  Tan = Opposite/Adjacent

The distance opposite the angle of elevation is the plane's height, 500 m. The distance adjacent to the angle of elevation is the horizontal distance to the plane, 3 km = 3000 m. Then the angle is found from ...

  tan(α) = 500/3000 = 1/6

  α = arctan(1/6) ≈ 9.46°

The plane is approaching at an angle of 9.46°. It is safe to land, since that angle is less than 15°.

_____

<em>Additional comment</em>

The usual descent angle for most commercial air traffic is 3°. Some airport geography demands it be different (steeper). A higher descent angle can put undue stress on the landing gear.

5 0
3 years ago
2[7+2(6.8-4)] whatbis the answer
vagabundo [1.1K]

Answer:

25.2

Step-by-step explanation:

A calculator will evaluate this for you. If you don't have one, you can use a Google search box.

The Order of Operations tells you to start evaluation with the inner parentheses. Multiplication is performed before addition.

2(7 +2(2.8))

= 2(7 +5.6)

= 2(12.6)

= 25.2

3 0
3 years ago
How many times larger is 9 x 10^9 than 3 x 10^-4?
andrezito [222]
The larger value is 9 x 10^9
The smaller value is 3 x 10^(-4)

Divide the larger over the smaller
Doing so will have you divide the coefficients 9 and 3 (numbers in front of the "times ten to the..." portions) to get 9/3 = 3. 
Then you'll also subtract the exponents: 9 minus (-4) = 9 - (-4) = 9 + 4 = 13

In summary so far, we got a coefficient of 3 and an exponent of 13

So the final answer is 3 x 10^13 (assuming you want scientific notation)

If you want to convert to standard notation, instead of scientific notation, move the decimal point in 3.0 thirteen spots to the right to get 

30,000,000,000,000

there are 13 zeros (four groups of 3 plus one just after the 3) in that value above. This is the number 30 trillion
8 0
3 years ago
Helppppppp plssssssssss no unhelpful answer or I will delete
lara31 [8.8K]

Answer:

80 sq.in

Step-by-step explanation:

One square's side = 4in

One square's area = 16 sq. in

16 x 5 = 80 sq.in

Hope that helps!

3 0
3 years ago
Read 2 more answers
Suppose 4-year-olds in a certain country average 3 hours a day unsupervised and that most of the unsupervised children live in r
natta225 [31]

Answer:

D)the time (in hours) a 4-year-old spends unsupervised per day

Step-by-step explanation:

Given that 4-year-olds in a certain country average 3 hours a day unsupervised and that most of the unsupervised children live in rural areas, considered safe

X - the time (in hours) a 4-year-old spends unsupervised per day

X is N(3,1.8)

P(X

4 0
3 years ago
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