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cestrela7 [59]
3 years ago
7

I need help with this pleaseeeeeeeeeee

Mathematics
1 answer:
sweet-ann [11.9K]3 years ago
7 0
It's a little blurry could you try and take a more clear picture?
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the braking distance of a vehicle is directly proportional to the square of its speed. when the speed of the vehicle is b m/s, i
lorasvet [3.4K]
“The breaking distance is directly proportional to the square of its speed”
Using your variables, this means: d = k•b^2
k here is some unknown (and for this question irrelevant) number.

Now if b (the speed) is increased by 200%, then your new speed is b+2b = 3b. The 2b is the 200% increase.

Throw 3b into the first equation we have the new d as:
d = k • (3b)^2

Simplifying this, you have d = k•9b or d=9kb

This means the new braking distance is 9 times the original braking distance.
6 0
2 years ago
Need help please i don't know how to do this one
kakasveta [241]
I believe it’s 14.97
3 0
3 years ago
Suppose there is a 1.7°F drop in temperature for every thousand feet that an
kotegsom [21]

Answer: 61.2?

Step-by-step explanation:

5 0
3 years ago
How many ways can 4 candy bars be chosen from a store that sells 30 candy bars (combination)
Morgarella [4.7K]

Answer:

Using the combination formula:

Number of combination of r object chosen from the total object i.e n is given by:

\frac{n!}{r! \cdot (n-r)!}

As per the statement:

4 candy bars be chosen from a store that sells 30 candy bars

Number of candy bars chosen from a store that sells 30 candy bars(r)= 4

and

Total candy bars(n) = 30

then substitute in the given formula we have;

\frac{30!}{4! \cdot (30-4)!}

⇒\frac{30!}{4! \cdot (26)!}

⇒\frac{30 \cdot 29 \cdot 28 \cdot 27 \cdot 26!}{1 \cdot 2 \cdot 3 \cdot 4 \cdot (26)!}

Simplify:

⇒\frac{657720}{24} = 27,405

therefore, 27,405  ways can 4 candy bars be chosen from a store that sells 30 candy bars

3 0
3 years ago
Read 2 more answers
A figure that has been turned has been
Anna71 [15]
Hm.. I think its rotated
8 0
3 years ago
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