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2 years ago

Anyone know the answer to this

Mathematics

1 answer:

Vesna [10]2 years ago

3 0

Answer:

Part A:

- angle ACB= 60° (ABC equilateral triangle.)

- Angle ECD=EDC= (180°-32°)/2= 148/2= 74° (sum of angles in a triangle is equal to 180, and triangle ECD is isosceles since it's given that CE=DE.

- x= 180°-(60°+74°)

= 180°-134°

= 46°

x= 46°

Part B:

120°

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35 points. need help asap

vagabundo [1.1K]

Answer:

I don't know the answers, but I think I know how to get them.

Step-by-step explanation:

If you have a protractor, you can use that to measure the angles.

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3 years ago

What is the solution set of |- x| = - 10?

Vaselesa [24]

Answer:

No Solution

Step-by-step explanation:

|-x| always = | x |

| x | = - 10

If x = 10, It does not equal to - 10

If x = -10, It becomes 10 because its an absolute value, So it does not equal to -10

So, there is No Solution

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3 years ago

The length of a football field is 120m. what is the length on drawing, if the scale is 1:5m?

inna [77]

Answer: I believe its 24 meters.
Explanation: Just divide 120 by 5

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4 years ago

Quick please I really need this

Kipish [7]

Answer:

y = 39

Step-by-step explanation:

550 x $\pi$ = $\pi$ $r^{2}$ x 11 + y

550 x $\frac{7}{22}$ = $\frac{7}{22}$ x 11 x 11 + y

550 x $\frac{7}{22}$ x $\frac{22}{7}$ = 11 x 11 + y

550 = 11 x 11 + y

$\frac{550}{11}$ = $\frac{11}{11}$ x 11 + y

50 = 11 + y

50 - 11 = y

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3 years ago

A large rock (mass = 4.0 kg) moving at a velocity of 2.0 m/s has a momentum of _______ kg*m/s

Elodia [21]

Step-by-step explanation:

❁ $\underline{ \underline{ \text{Given} }}:$

Mass of a large rock ( m ) = 4.0 kg
Velocity ( v ) = 2.0 m/s

❁ $\underline{ \underline{ \text{ \: To \: find}}}:$

Momentum ( p )

✑ $\underline{ \underline{ \text{Solution}}} :$

$\boxed{ \underline{ \sf{Momentum \: = \: mass \: \times \: velocity}}}$

plug the known values :

⟹ $\sf{Momentum = 4.0 \: kg \: \times \: 2.0 \:m/s }$

⟹ $\sf{Momentum = 8 \: kg \: m/s}$

$\red{ \boxed{ \boxed{ \tt{⟿ \: Our \: final \: answer : \bold{ \underline{8} }\: kg*m/s}}}}$

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✑ $\underline{ \underline{ \text{Learn \: more about \: momentum}}}:$

Imagine that a car and a truck both have the same speed on the road. Which one can stop easily ? Of course , it is hard to stop the truck relative to the car. The reason is that the car and the truck have the same speed bit different masses. Thus , we can say that to stop a heavier body is harder than to stop a lighter one even both of them have the same speed.

If two tennis balls are hit towards you in different velocities , it is not equally easier to stop them. The ball in more velocity is difficult to stop relatively. Thus , we can say that to stop a body in more velocity is harder than to stop a body with less velocity , eventhough they have the same speed.

The physical quantity that describes the quantity of motion of a body is called momentum. The momentum of a moving body or linear momentum is defined as the product of mass & velocity of a moving body.

Mathematically ,

Momentum = mass × velocity

i.e p = m × v

The SI unit of momentum is kg • m/s. Since velocity is a vector quantity and multiplied with mass ( scalar quantity) , momentum becomes a vector quantity. Direction of momentum is the same as velocity.

Hope I helped ! ♡

Have a wonderful day / night ツ

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3 years ago