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NeTakaya
3 years ago
15

Help Me With These Please

Mathematics
1 answer:
Gwar [14]3 years ago
6 0
Look up the formula to find the area of a trapezoid. Then do the math HINT: The formula is 

A= a+b/2 h
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...............................................................So help.
makkiz [27]

Answer: 3/11 = 0.27272727272727, -5/8 =  0.625

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Hello! i'd like someone to help me convert this problem to an equation, please !! i don't need the result :(
Lady_Fox [76]

Answer:

21

Step-by-step explanation:

We can set Andrea's current age as x.

In 11 years, her age will be half the square of her age 13 years ago. We get the equation:

x+11=\frac{(x-13)^2}{2} \\2(x+11)=(x-13)^2\\2x+22=x^2-26x+169\\x^2-28x+147=0\\(x-21)(x-7)=0\\x=21, x=7

Ok, now we know that Andreas age could be either 21 or 7. However, the problem states that "in 11 more years my age will be hald the square of my age 13 years <u>ago</u>." It would not make sense for Andrea to be currently 7 if she was not yet born 13 years ago.

<u>Therefore, Andrea's age is 21.</u>

<u />

<em>I hope this helps! Let me know if you have any questions :)</em>

4 0
3 years ago
What is sec theta=2.75 in sin theta? Give in fraction and decimal form please?
jolli1 [7]
Sec 2.75= sec 11/4
Sec is reciprocal of cos , cos theta = 4/11.

Cos is the ratio adjacent/hypotenuse. Use Pythagorean theorem to find the third side which is 10.
Sin theta = 10/11
7 0
4 years ago
What event helped unite East and West Germany?
zhenek [66]

Answer:

The fall of the Berlin Wall

Step-by-step explanation:

3 0
4 years ago
The manager of the Danvers-Hilton Resort Hotel stated that the mean guest bill for a weekend is or less. A member of the hotel's
Ivan

Who ever affords Hilton Hotels is rich as hecc let them hire a math guard to do it for you lol.

5 0
3 years ago
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