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3 years ago

Which statements are correct about quadrilaterals?

1 answer:

3 0

Th answers would be B. all rectangles are parallelograms, C. All rhombuses are trapezoids., and D all 4 sided shapes have at least one pair of parallel sides.

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Find the volume of a right circular cone that has a height of 3.5 ft and a base with a diameter of 11.9 ft. Round your answer to

bixtya [17]

Answer:

The answer is approx. 129.76 ft^3

Step-by-step explanation:

Make sure to plug your numbers into the equation V=πr2 h /3.

And be sure to change your diameter (11.9ft) to radius (5.95ft).

7 0

4 years ago

The speed of a motorcycle increases from 10km/hr to 50km/hr in 9 seconds. What is its acceleration?

ivanzaharov [21]

Acceleration of motorcycle= 1.23m/s^2

Step-by-step explanation:

We need to find the acceleration of motorcycle When its speed increases from 10km/hr to 50km/hr in 9 seconds

Given:

Initial speed= 10km/hr

Final speed= 50km/hr

Time = 9 seconds

Acceleration = ?

Formula: $Acceleration =\frac{Change\,\,in\,\,velocity}{time}$

Solution:

We will first convert the speed from km/hr to m/s

Converting Initial speed 10km/hr into m/s

1 km = 1000 m

10 km = 10,000 m

and 1 hr = 3600 s

So, Initial speed = 10,000/3600 = 2.77 m/s

Converting Final speed 50km/hr into m/s

1 km = 1000 m

50 km = 50,000 m

and 1 hr = 3600 s

So, Initial speed = 50,000/3600 = 13.88 m/s

Now Using formula of acceleration:

$Acceleration =\frac{Change\,\,in\,\,velocity}{time}\\Change\,\,in\,\,velocity =Final\,\,speed-Initial\,\,speed\\Change\,\,in\,\,velocity=13.88 - 2.77\\Change\,\,in\,\,velocity = 11.11 m/s\\Acceleration =\frac{11.11}{9}\\Acceleration =1.23 m/s^2$

So, Acceleration of motorcycle = 1.23m/s^2

Keywords: Acceleration, Change in speed

Learn more about Acceleration at:

#learnwithBrainly

6 0

3 years ago

HELP URGENT!!!!!!!!!!!!!!!!!!!!!!!!!

Ainat [17]

First find the area of the whole square. Even the part that isn't part of the area. Then find the area of the spots that aren't part of the shape. Then subtract that area from the area of the whole thing.

15×18=270
(9x12)+(4×5)=128
270-128=142

Area= 142ft^2

5 0

3 years ago

Read 2 more answers

Answer asap thanks!!

Dmitry_Shevchenko [17]

Step-by-step explanation:

(5-\/5)²

25-10\/5+5

30-10\/5

Here, a=30 and b=-10

3 0

3 years ago

words every 20 minutes, whilo Becky's rate is represented by the graph below. Who types at a faster rate , Armav or Becky? PLEAS

Maru [420]

Answer:

The anwser is 1340

Step-by-step explanation:

divide 335 by 5 then multipilyby 20

3 0

3 years ago