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Oksanka [162]
3 years ago
10

Please help me with this problem

Mathematics
1 answer:
Anni [7]3 years ago
4 0
Area of a trapezoid :
\frac{1}{2}  \times (a + b)h
Where a & b are sides & h is the height

So,
\frac{1}{2}  \times (12.2 + 10.2) \times 12.6 \\  = 141.12

You might be interested in
Winston found $3.75 for in change on the beach with
Citrus2011 [14]

Answer:

Winston can find $1.125 dollars every 1 hour.

Step-by-step explanation:

I got this by dividing 3.75 by 3 1/3.

3.75 ÷ 3 1/3 = 1.125

Hope this helps! :)

5 0
3 years ago
(2a+b) (a-b) + (2a-b) (a+b)
yanalaym [24]

Answer: 4a^2-2b^2 (I think this is right)

Step-by-step explanation:

Using the order of operations I started by multiplying both of the sides separately. The left side of the equation becomes 2a^2-b^2-ab while the right becomes 2a^2-b^2+ab. Then I put the sides together to add them and after combining like terms it becomes 4a^2-2b^2.

8 0
2 years ago
Days before a presidential​ election, a nationwide random sample of registered voters was taken. Based on this random​ sample, i
dimaraw [331]

Answer:

D. ​No, because​ 50% is within the bounds of the confidence interval.

Step-by-step explanation:

"52% of registered voters plan on voting for Robert Smith with a margin of error of plus or minus±​3%"

This means that the 95% confidence interval for the percentage of people that plan on voting for Robert Smith is

(52-3 = 49%, 52+3 = 55%).

We can't say that he will win the election, because at the 95% confidence level, the proportion is not guaranteed to be above 50%.

So the correct answer is:

D. ​No, because​ 50% is within the bounds of the confidence interval.

4 0
4 years ago
Read 2 more answers
Five boxes of candles contain a total of 60 candles. Each box holds the same number of candles. Complete the table and graph the
gizmo_the_mogwai [7]

Answer:

300

Step-by-step explanation:

you should muliple 60 and 5

4 0
3 years ago
What's the answer to this?? I've tried 10 times and I can't solve it. Please help me!!
Lera25 [3.4K]

Answer:

whats the question

Step-by-step explanation:

4 0
3 years ago
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