MATHEMATICS HIGH SCHOOL

The perimeter of a regular heptagon with each side 4.5 cm is ____

Answers

Answer 1

Answer:

Answer:

31.5 cm

Step-by-step explanation:

Heptagon = 7 sides

4.5 x 7 = 31.5

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Answer 2

Answer:

Answer:

31.5cm

Step-by-step explanation:

7x4.5 is 31.5

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If 3^(2x1)=3^(x+5), what is the value of x?

Answers

Answer:

its -3

Step-by-step explanation:

since the bases are equal then the powers are equal

${3}^(2) = {3}^(x + 5) \n \n 2 = x + 5 \n x = - 3$

If the time is 4:25 am what is the time that is 9 hours and 40 minutes before the time is shown

Answers

Count 9 hours back. 4:25am - 9 hours = 7:25pm.
Count 40 minutes back. 7:25pm - 40 minutes = 6:45pm.
Answer = 6:45pm

(5xy - y^2) - (3yz + 2xy) + (3y^2 - 4xy)

Answers

$(5xy - y^2) - (3yz + 2xy) + (3y^2 - 4xy) \n= 5xy-y^2-3yz-2xy+3y^2-4xy \n =2y^2-xy-3yz$

$(5xy - y^2) - (3yz + 2xy) + (3y^2 - 4xy)=\n 5xy-y^2-3yz-2xy+3y^2-4xy=\n 2y^2-xy-3yz$

Mrs. Myles gave the same test to both her first and third period class. In first period, the mean was 75 and the range was 30. In third period, the mean was 85 and the range was 50. Which is a true statement?A) Most of third period scored in the 80's.
B) More people had a score in the 70's in first period.
C) On average, third period did better than first period.
D) On average, first period did better than third period.

Answers

The right answer for the question that is being asked and shown above is that: "C) On average, third period did better than first period. " In third period, the mean was 85 and the range was 50. The statement that is true is that C) On average, third period did better than first period.

Answer:

C) On average, third period did better than first period

Step-by-step explanation:

Usa test prep

including the end zone a football field measure 120 yds long by 53 1/3 yards wide. what is the area of the football field ?