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amm1812
3 years ago
13

1. Work out the speed of a car travelling:

Mathematics
2 answers:
Norma-Jean [14]3 years ago
7 0

Answer:

10m/s,15m/s,20m/s,5m/s

Step-by-step explanation:

Speed = distance / time

a) distance = 100m , time = 10s

Speed = distance / time

Speed = 100m/10s

Speed = 10m/s

b) distance = 300m , time = 20s

Speed = distance / time

Speed = 300m/20s

Speed = 15m/s

c) distance = 700m , time = 35s

Speed = distance / time

Speed = 700m/35s

Speed = 20m/s

d) distance = 1000m , time = 200s

Speed = distance / time

Speed = 1000m/200s

Speed = 5m/s

I hope this was helpful, please rate as brainliest  

egoroff_w [7]3 years ago
6 0

Step-by-step explanation:

speed is a scalar quantity (which only needs a magnitude), and velocity is a vector quantity (needs a magnitude with a direction)

Here since they want the "speed" you can use the velocity formula, but without a direction.

velocity =  \frac{distance}{time}

A. v=100/10

v=10m/s

B. v=300/20

v=15m/s

C. v=700/35

v=20m/s

D. V=1000/200

v=5m/s

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The roof will be in the shape of an isosceles triangle with a base length of 30 m and two sides that are 17 m. The two 17 m beams will have the same angle of elevation since they have to might in the middle.

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cos^{-1}( \frac{15}{17})=\theta

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3 0
2 years ago
To convert meters per minute to kilometers per hour, which of the conversion facorts would be used?
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3 years ago
find real numbers a, b, and c so that the graph of the function y=ax^2+c contains the points (-1,6), (2,7), and (0,1)
Paraphin [41]
This gives you three simultaneous equations:

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If c =1,

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This doesn't work in the second equation, so the quadratic that goes through these points is not in the form y = ax^2 + bx + c
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5 0
3 years ago
I need help please! I’m really confused about it
Ronch [10]

The answer is 1 and 3

3 0
3 years ago
Multiply 3.76 X.2<br> Show your work
WITCHER [35]

Answer:

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Step-by-step explanation:

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I hope this helps!

7 0
3 years ago
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