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1 year ago

An airplane covers 3450 km in an hour. how much distance will it cover in 7 hours?

Mathematics

1 answer:

umka2103 [35]1 year ago

4 0

Answer:

24,150km

Step-by-step explanation:

The plane travels 3450km in 1 hr, since we need the distance traveled in 7 hrs we need to multiply 3450 by 7.

distance in 7hrs: 3450*7 = 24,150km

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The front view of a podium is shown. Bryan wants to paint the front of the podium blue. He decomposed the shape into two triangl

Shalnov [3]

Answer:

Step-by-step explanation:

Given:

Base length:

A = 8.5 m

B = 4 m

Height, h = 2 ft

1 gallon = 350 ft^2

Area of trapezoid = 1/2 × (A + B) × h

= 1/2 × (8.5 + 4) × 2

= 12.5 ft^2

1 gallon = 350 ft^2

2 gallons = 700 ft^2

1 podium = 12.5 ft^2

= 700/12.5 podium

= 56 podiums will be painted with 2 gallons of paint.

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3 years ago

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Two cars start moving from the same point. One travels south at 16 mi/h and the other travels west at 12 mi/h. At what rate is t

alexandr402 [8]

Answer:

20 miles per hour

Step-by-step explanation:

The distances traveled by each car are perpendicular, so we can find the distance between the cars using the Pythagoras' theorem between their distances traveled:

$d^2 = d_1^2 + d_2^2$

Where d is the distance between the cars, d1 is the distance traveled by the first car and d2 is the distance traveled by the second car.

The distance traveled is calculated by the speed times the time traveled, so we have:

$d^2 = (16t)^2 + (12t)^2$

$d^2 = 256t^2 + 144t^2$

$d^2 = 400t^2$

$d = 20t$

The rate that the distance is increasing can be found with the derivative of the distance in relation to the time:

$dd/dt = 20\ mph$

So the rate that the distance increases is always 20 miles per hour, and it's independent of the time.

4 0

3 years ago

Is anyone willing to help me

eimsori [14]

Answer:

5.8 and 6.3 because you can see the pattern.

4 0

2 years ago

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A rectangular floor is 7 yd long and 3 yd wide. Heatherwants to tile the floor with tile sold by the square foot.Use the facts t

Sonja [21]

We need to convert the given measures from yard to feet. Since 1 yard is equal to 3 feet, we have

$\begin{gathered} 7yd=7yd\times(\frac{3ft}{1yd}) \\ \text{then} \\ 7yd=21ft \end{gathered}$

similarly, for the wide, we have

$\begin{gathered} 3yd=3yd\times(\frac{3ft}{1yd}) \\ 3yd=9ft \end{gathered}$

Since the area of a rectangle is wide times length, the area is

$\begin{gathered} A=\text{wide}\times length \\ A=9ft\times21ft \\ A=189ft^2 \end{gathered}$

Therefore, the area is equal to 189 square feet

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1 year ago

Kat owns 15% more figurines than she did last year. She purchased F figurines this year. Which of the following expressions coul

Stella [2.4K]

Answer: F / 0.15 = 100F / 15 = 20F / 3 ≈ 6.67F.

Explanation:

1) The three expresssions, F / 0.15; 15 F / 100; 3F / 20; are equivalent.

2) The number of figurines Kat owned last year may be expressed in terms of the number the of figurines purchased, F, this year, and the 15%, following this procedure:

Call n the amount of figurines owned last year.

F is the number of figurines purchased: F = 15%n = 0,15n

Hence, you just need to clear F from the expression F = 0.15n

Divide both sides by 0.15:

F / 0.15 = n or n = F / 0.15 (reflexive property)

To prove the equialavence of the other expresssions you just have to use the properties of multiplication or division:

(F / 0.15) × (100 / 100) = 100F / 15

100F / 15 = (100/5)F / (15/5) = 20F / 3 ≈ 6.67F

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3 years ago

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