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Lina20 [59]
2 years ago
12

Part A

Mathematics
1 answer:
telo118 [61]2 years ago
6 0

<em>Answer: </em>

<em>Elena's running speed is 5 miles/hour </em>

<em>Explanation: </em>

<em>The speed is defined as the covered distance per unit time </em>

<em>In the problem, we have: </em>

<em>The distance covered is the length (circumference) of the circular track which is given as  of a mile. </em>

<em>We are also given that she completes each lap (she completes  of a mile) in  of an hour </em>

<em> </em>

<em>To get her speed, we will divide the distance covered by the time taken to cover this distance </em>

<em>This is done as follows: </em>

<em>speed =  miles/hour </em>

<em>This means that: </em>

<em>Elena can run 5 miles each hour</em>

By shesney <3

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2. The parameter "b": Compare the graphs of several different exponential growth functions in
BaLLatris [955]

Answer:

See explanation

Step-by-step explanation:

Required

The significance of "b" in exponential function

An exponential function is represented as:

y = ab^x

In the above equation, parameter "b" is the rate of the function

In other words, the constant multiplier of the function.

Take for instance;

y = 2*4^x

By comparison:

b = 4

Another instance is:

y = 2(-4)^x

By comparison

b = -4

<u>Other significance of parameter b are:</u>

If b > 0 then b represents a growth factor

If b < 0 the b represents the factor of decay

b \ne 0 i.e. b is never 0

3 0
3 years ago
Jonathan's preschool class has 9 girls and 6 boys. Which proportion can be used to determine the percent, P, of boys in class?
dimulka [17.4K]

Answer:

B

Step-by-step explanation:

you are comparing percent to percent and total boys to total class.

7 0
3 years ago
Read 2 more answers
Helppppppppp please:)
OlgaM077 [116]

Step-by-step explanation:

Thr triangles are similar if any two sides are proportional.

In this, we cannot see any proportional sides, like

DU should be proportional to UT, it is not.

SU should be equal to UE ,it is not.

So, The triangles are not similar.

Hope it helps :)

3 0
3 years ago
Anyone understand this?
ohaa [14]

Answer:

yes you just have to solve for both x and y in the top system and then solve the other systems to find out which one has the same solutions

Step-by-step explanation:

hope this helps!

8 0
3 years ago
How do you do -19+C/3=8 can someone teach how to solve this problem?
ki77a [65]
You're looking for c, so you want to isolate it or get it by itself. To get rid of the /3 you multiply since the opposite of division is multiplication and to get rid of it, you do the opposite (like -9 you would add 9 to get it to 0). Now you are left with -19+c = 24 (the 24 is 8*3 because what you do to one side you do to the other. Now you get c by itself so you add 19 to both sides which leaves you with C= 43. Sorry if this was confusing!
3 0
3 years ago
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