MATHEMATICS MIDDLE SCHOOL

The area of a trapezium is A= 1/2 h (a+b) where H is the height and a and b are the lengths of the trapezium. Find the area of the trapezium with the following measurements :h= 2.0 mm, A= 7.5 mm, B= 10.8 mm

Please showing al working! :/

Answers

Answer 1
Answer: so assuming you meant to type a=7.5mm and b=10.8 (uppercase and lowercase letters matter) then


pemdas
parethasees
exponents
mulitplication or division
addition or subtraction


area=1/2 times h times (a+b)
area=1/2 times 2 times (7.5 +10.8)
area=1/2 times 2 times (18.3)
area=1 times (18.3)
area=18.3 square mm also written as 18.3 mm^2

area=18.3 square mm or 18.3mm^2
Answer 2
Answer: Area of trapezium=1/2 h(a+b),a=7.5mm, b=10.8mm, h=2.0mm.1/2 2(7.5+10.8).1/2 2(18.3).1/2 36.6.Area of trapezium=18.3sqmm

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Answers

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PLEASE HELP!!!! Both pages please .Thanks !!!!

Answers

dear, you substitute the number .. example question number 12. it says there x=2 .. so 24x is 24 times 2 = 48 .. then you divide by 6.. 48÷6 = 8 .

Gregory predicts that 310 people will attend the spring play. And there was an actual total of 220 people who attended the spring play. What is the percent error.

Answers

310 - 220 = 90
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9000 = 310x
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x = around 29%

Answer:

29%

Step-by-step explanation:

Richard practiced piano each of 3 piano solos for 5/12 hour. How long did he practice in all? Please show how to figure

Answers

3 piano solos....each is 5/12 hr....
u can either add : 5/12 + 5/12 + 5/12 = 15/12 = 1 1/4 hrs

or u could multiply : 3 * 5/12 = 15/12 = 1 1/4 hs

either way....same answer

HECTOR PLANTED 185 FLOWERS IN 2 DAYS THERE WERE 5 VOLUNTEERS INCLUDING HECTOR WHO EACH PLANTED ABOUT THE SAME NUMBER OF FLOWERS ABOUT HOW MANY FLOWERS DIDTHEY PLANT SHOW YOUR WORK

possible answers:185, 400, 500, 1,000

these are the answers the problem gives me

Answers

Line up 185x5 on the paper as if you were doing any other multiplication problem. 185 on top, 5 on the bottom with the x sign to the left.5 times 5 is 25, drop the five, carry the 2, 5 times 8 is 40, plus the 2 we carried is 42, drop the two, carry the four, 5 times one is five, plus the four is 9. The answer is close to 1,000, so you'd circle the answer 1,000.

Let

x-------->number of flowers that the 5 volunteers planted in 2 days

we know that

x=185*5\n x=(100+80+5)*5\n x=100*5+80*5+5*5\n x=500+400+25\n x=925

therefore

the answer is

about 1,000

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B.
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C.
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D.
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Answers

x - the percent increase

25+25x=35 \ \ \ |-25 \n25x=10 \ \ \ |/ 25 \nx=(10)/(25) \n\Downarrow \nx=(10)/(25)=(10 * 4)/(25 * 4)=(40)/(100)=40\%

The answer is C. 40% increase.
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