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Rom4ik [11]
3 years ago
5

Use the distributive property to express 40 in a different form.

Mathematics
1 answer:
Artemon [7]3 years ago
4 0

Answer:

5(4 + 4)

Step-by-step explanation:

5(4 + 4)

20 + 20

40

Hope this helps!

=)

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Two ships leave a harbor at
natima [27]

Answer:

  30√3 ≈ 51.96 miles

Step-by-step explanation:

The distance between the two ships can be found using the Law of Cosines, or using your knowledge of the side relationships in special triangles.

__

Each ship is traveling at 10 mph, so after 3 hours will have traveled 30 miles.

The triangle OS1S2 formed by the harbor and the two ship locations is an isosceles triangle with base angles of 30°. Each half of OS1S2 is a 30-60-90 triangle whose longer leg is √3 times half the hypotenuse. The sum of those two "longer legs" is the distance between the ships.

The distance between ships is 2×15√3 = 30√3 ≈ 51.96 miles.

_____

<em>Additional comment</em>

If you prefer to use the Law of Cosines, you are looking for the length of the side opposite the 120° angle in a triangle with sides of 30 miles.

  c² = 30² +30² -2·30·30·cos(120°) = 30²(2-2·(-0.5)) = 3·30²

  c = 30√3 . . . . . take the square root (miles)

8 0
2 years ago
Find the radius of a circle with a circumference of 49 yards
Mars2501 [29]

Answer:

7.8025

Step-by-step explanation:

You get the circumfence formula 2 * pi * r

since you are looking for the radius divide 49/2 then the answer you get divide it by pi and then you have your radius

i hope this helped<33

4 0
4 years ago
Read 2 more answers
during a 7 hour snowstorm it snows at a rate of 1 inch per hour for the first 2 hours, at a rate of 2 inches per hour four the n
ioda

Answer:

9 inches of snow fell in the 7-hour snowstorm.

Step-by-step explanation:

To find your answer write an equation to find your answer.

1 inch per hour for two hours 1(2)

2 inches per hour for four hours 4(2)

and 1 inch in the last hour

so add those up

1(2)+4(2)+1

2+8+1

9

7 0
3 years ago
If y=8 when x=3 when x=45
Veronika [31]

Answer:

The value of y for x = 45 is 120 .

Step-by-step explanation:

Given as :

Let The variables y and x are proportional to each others

I,e y ∝ x

Now , y = k x

So, for x = 3  ,  y = 8

I.e  8 = k × 3           ........1

∴  k = \frac{8}{3}

<u>Similarly </u>

for x = 45 , y = k × 3

I.e y = k × 45        ..........2

Now, putting the value of k  in eq 2

So,  y =  \frac{8}{3} × 45

I.e y = \frac{8\times 45}{3}

Or, y = 8 × 15

∴    y = 120

So, for x = 45 , y = 120

Hence The value of y for x = 45 is 120 . Answer

5 0
3 years ago
What two partial products would you add to find 513 times 46
Reptile [31]
 20,520 + 3.078 = 23,598 so... 513 * 46 = 23,598
3 0
3 years ago
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