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labwork [276]
3 years ago
12

Hello! can you guys help me with this one? 50 Points!!

Mathematics
2 answers:
Anit [1.1K]3 years ago
5 0

Answer: it’s 7,935 square units answer will be A

Step-by-step explanation: hope this helped:)

HACTEHA [7]3 years ago
4 0

Answer:

I believe it is A

Step-by-step explanation:

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Which expression defines the given series for seven terms?<br><br> 8 + 13 + 18 + . . .
almond37 [142]

The given question is 8+13+18+...... which is in arithmetic progression . And for arithmetic series, we have to use the following formula for nth term .

a_{n} = a + (n-1)d

Here a =8 , d=5

So we get

a_{n} = 8+(n-1)5 = 5n +3

And the required expression for n=7 is

\sum_{n=1}^{7}(5n+3)

7 0
3 years ago
What is 2/5 simplified?
zmey [24]
2/5 van not be simiplified because 2 and 5 dont have a common factor lower than them
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3 years ago
Eye Color Hair Color Blue Gray Green Brown Marginal Total Blond 42 5 21 10 78 Red 12 22 19 12 65 Brown 22 5 12 34 73 Black 9 3 1
iogann1982 [59]
The <u>correct answer</u> is:

18.

Explanation:

There were 303 people surveyed total.

There were 64 people with brown eyes and black hair; that makes the percentage of the population 64/303 = 21.12% ≈ 21%.

There were 9 people with blue eyes and black hair; that makes the percentage of the population 9/303 = 2.97% ≈ 3%.

This means the percentage of students with brown eyes and black hair was greater than the percentage of students with blue eyes and black hair by:
21-3 = 18%.
5 0
2 years ago
Read 2 more answers
Aaron designed a robot for a contest. His robot can move 3/4 feet in 1/2 second. What is the robot’s unit rate of speed in miles
Katena32 [7]

Answer:

1.02272727... mi per hr

Step-by-step explanation:

8 0
3 years ago
A motor vehicle has a maximum efficiency of 39 mpg at a cruising speed of 40 mph. The efficiency drops at a rate of 0.1 mpg/mph
svp [43]

Answer:

38 mpg

Step-by-step explanation:

Initial efficiency = 39 mpg

Initial speed = 40 mph

Final speed = 50 mph

The efficiency drop  between 40 mph and 50 mph is given by:

E_d = 0.1 \frac{mpg}{mph}*\Delta V

The total efficiency drop from 40 to 50 mph is:

E_d = 0.1 \frac{mpg}{mph}*(50-40)mph\\E_d = 1\ mpg

Therefore, the efficiency at 50 mph is:

E_{50} = E_{40} -E_d\\E_{50} = 39 -1\\E_{50} = 38\ mpg

5 0
3 years ago
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