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blsea [12.9K]
3 years ago
5

A bird flew 20 miles in 100 minutes at constant speed. At that speed: (a) how long would it take the bird to fly 6 miles? (b) Ho

w far would the bird fly in 15 minutes? (c) How fast is the bird flying in miles per hour? (d) What is the bird’s pace in minutes per mile?
Mathematics
1 answer:
pav-90 [236]3 years ago
6 0

 The standards are based on the best available research and the highest state standards from across the nation

<span> and around the world and are designed by a diverse group of teachers, experts, parents, and school administrators, so they reflect both our aspirations for our children and the realities of the classroom.</span>
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Determine the right table.
GenaCL600 [577]

Answer:

The correct option is 1.

Step-by-step explanation:

A relation is called a function if there exist one value of y for each value of x.

In a mapping first set represent the value of x and second set represent the value of y.

In mapping 1, for x=-5, the value of y is -4 and 3. For single of x there exist more than one value of y, therefore this relation is not a function.

In mapping 2 and 3, for all values of x, the value of y is unique. For single of x there exist only one value of y, therefore these relations are function.

Therefore mapping 1 does not represent a function. Option 1 is correct.

7 0
3 years ago
Read 2 more answers
N is between A and X. AN = 2x + 1, NX = 3x, and AX = 21. what is AN?
Allisa [31]

Answer:

AN = 9

Step-by-step explanation:

so we can imagine this in a line like:

A---------------N---------------X

Step 1 : solve for x

AX=21 (our total)

because we know that AN+NX together makes AX, we put that into an equation

<u>AN + NX = AX </u>

(2x+1) + (3x) = 21

2x + 1 + 3x = 21  <-- <em>subtract 1 from both sides</em>

2x + 3x = 20  <-- <em>add 2x +3x </em>

5x = 20   <-- <em>divide 5 from both sides</em>

<u>x = 4</u>

Step 2 : input x into AN

AN = 2x + 1  <-- <em>input 4 for x</em>

AN = 2(4) + 1  <-- <em>simplify from there</em>

<u><em>AN = 9</em></u>

<u><em /></u>

3 0
3 years ago
The scale of a map is 1 cm to 5 km. A farm is represented by a rectangle measuring 1.5 cm by 4 cm. What Is the actual area of th
shusha [124]

Answer:

150 km squared

Step-by-step explanation:

5*1.5=7.5

4*5=20

7.5*20=150

4 0
3 years ago
Read 2 more answers
Which is larger, a pound or a kilogram? Explain your reasoning.
AlexFokin [52]

Answer:

kg

Step-by-step explanation:

1pound is 0.45kg

5 0
3 years ago
Read 2 more answers
A cargo plane flew roundtrip from Smithtown to Johnsville. It took one hour less time to get there than it did to get back. The
iren [92.7K]

Answer:

13 hours

Step-by-step explanation:

Average speed = Distance traveled / time taken

                   ⇒ Distance = Average speed × Time

                                     d = s × t

For the first trip;

Average speed = 280 mph

                          d₁ = 280t₁                    ------(1)

where;

d₁ is the distance covered to get to the destination

t₁ is the time taken to get to the destination

For the second trip;

Average speed = 240 mph

                           d₂= 240t₂                     ------(2)

where;

d₂ is the distance covered on the way back

t₂ is the time taken on the way back

The trip is the same distance to and fro. Therefore,

                           d₁ = d₂                              

Substituting the equation for d₁ and d₂

                          280t₁ = 240t₂              ------(3)

It took one hour less time to get there than it did to get back, then,

                                 t₁ = t₂ - 1

                                 t₂ = t₁ + 1                ------(4)

Substituting equation (4) into  equation (3)

                               280t₁ = 240(t₁ + 1)

                               280t₁ = 240t₁ + 240

                               280t₁ - 240t₁ = 240

                               40t₁ = 240

                                   t₁ = 240/40

                                   t₁ = 6 hours

From equation (4)

                                   t₂ = t₁ + 1

                                   t₂ = 6 + 1  

                                   t₂ = 7 hours

The total time for the trip is t₁ + t₂ = 6 + 7

                                       = 13 hours    

7 0
3 years ago
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