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Goshia [24]
3 years ago
8

PLEASE HELP

Mathematics
1 answer:
nata0808 [166]3 years ago
3 0

Answer: the first option is the correct answer.

Step-by-step explanation:

Martin runs 3/4 mile three days a week. We would assume that he runs a total of 3/4 miles in three days of each week.

In four weeks the number of days that he runs would be

3 × 4 = 12 days

Since he runs 3/4 miles in 3 days, the number of miles that he would run in 12 days would be

3/4 × 12 = 9 miles

He would run 9 miles in four weeks

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Ignore them workings out.<br> Can someone show me how to work this out
Readme [11.4K]
So, i did this, 
7.8*10=70
and then add 12
i got 82
did this help??
7 0
3 years ago
A map scale shows a scale of 1 inch = 50 miles. How many miles are represented by 4.5 inches on the map?
a_sh-v [17]

Answer:

Step-by-step explanation:

take 50*4.5 and you'll get your answer

7 0
2 years ago
Plz help!
beks73 [17]

First, you need to find the derivative of this function.  This is done by multiplying the exponent of the variable by the coefficient, and then reducing the exponent by 1.  

f'(x)=3x^2-3

Now, set this function equal to 0 to find x-values of the relative max and min.

0=3x^2-3

0=3(x^2-1)

0=3(x+1)(x-1)

x=-1, 1

To determine which is the max and which is the min, plug in values to f'(x) that are greater than and less than each.  We will use -2, 0, 2.

f'(-2)=3(-2)^2-3=3(4)-3=12-3=9

f'(0)=3(0)^2-3=3(0)-3=0-3=-3

f'(2)=3(2)^2=3(4)-3=12-3=9

We examine the sign changes to determine whether it is a max or a min.  If the sign goes from + to -, then it is a maximum.  If it goes from - to +, it is a minimum.  Therefore, x=-1 is a relative maximum and x=1 is a relative miminum.

To determine the values of the relative max and min, plug in the x-values to f(x).

f(-1)=(-1)^3-3(-1)+1=-1+3+1=3

f(1)=(1)^3-3(1)+1=1-3+1=-1

Hope this helps!!

7 0
3 years ago
Student attendance at football games
Paladinen [302]

Collin's sampling method will better represent the entire population.

<h3>Missing part of the question</h3>

Determine which sampling method will better represent the entire population.

<h3>How to determine the better method?</h3>

From the question, we understand the Collin selected random names from the school directory.

While Karl surveyed only the students sitting close to him.

Karl's method is biased because students sitting far from him do not have a chance of being surveyed.

Hence, Collin's sampling method will better represent the entire population.

Read more about sampling method at:

brainly.com/question/16587013

#SPJ1

4 0
2 years ago
Find the area of a rectangle that is 12 cm long and 10 cm wide.
gregori [183]

Answer:

area is length * width

12* 10 = 120cm

the answer is 120cm

Step-by-step explanation:

6 0
3 years ago
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