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3 years ago

30 PT AND BRAINLIEST

1 answer:

3 0

If the design is the cube in the second answer then it would have a surface area of 25 cm per face of the cube because to get the surface are you would multiple side by side of a face and then to get the full cubes surface area multiple one faces surface area by six because the cube has six faces and to get the volume you cube the side length of 5cm to get 125cm cubed. Hope this helps.

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"Rebecca walks 100 feet in a straight line. She then turns 20 degrees to her left and walks another 100 feet, and then turns 20

iragen [17]

Answer:

1,800 ft

Step-by-step explanation:

Rebecca will walk in the pattern of a regular polygon with 'n' sides and internal angles of 160 degrees (180 at a straight line - 20 degrees from each turn).

The equation that describes the internal angle of a regular polygon is:

$A = \frac{(n-2)*180}{n}$

For A = 160 degrees:

$160n=(n-2)*180\\(180-160)n=360\\n=18\ sides$

If each side is 100 ft long, the total distance that Rebecca has walked is:

$d = 18*100\\d=1,800\ ft$

She walked 1,800 ft.

5 0

3 years ago

the science teacher has 7 packs of seeds and 36 students if the student should each plant the same number seeds how many each st

Masteriza [31]

Answer:

each student would plant 252 seeds

4 0

3 years ago

Sean took 4 hours to travel from Town A to Town B at an

labwork [276]

Answer:

Tina's average speed for the whole journey = 56 kmph

Step-by-step explanation:

Time taken by Sean to travel from Town A to Town B = 4 hours.

Average speed of Sean = 70 km/h

We have equation of motion, s = ut + 0.5 at²

Time, t = 4 hours.

Initial speed, u = 70 km/hr

Acceleration, a = 0 m/s²

Substituting

s = ut + 0.5 at²

s = 70 x 4 + 0.5 x 0 x 4²

s = 280 km

Distance from Town A to Town B = 280 km

Tina took 1 hour more than Sean.

Time taken by Tina to travel from Town A to Town B = 4 +1 = 5 hours

We have equation of motion, s = ut + 0.5 at²

Time, t = 5 hours.

Displacement, s = 280 km

Acceleration, a = 0 m/s²

Substituting

s = ut + 0.5 at²

280 = u x 5 + 0.5 x 0 x 5²

u = 56 km/hr

Tina's average speed for the whole journey = 56 kmph

6 0

4 years ago

What is the product written in scientific notation?

wel

Answer is C. Definitely not d right off the bat because both exponents are negative so cross that out. After that its just counting zeros.

5 0

3 years ago

Read 2 more answers

Sean runs 3 miles in 21 minutes , Gwen runs 4 miles in 32 minutes ,Marc runs 5 miles in 30 minutes. Who has the fastest average

hodyreva [135]

Marc has the fastest average speed in miles per minute as he ran a mile in 6 minutes.

7 0

3 years ago