MATHEMATICS MIDDLE SCHOOL

Can someone help me with the these problems?

Answers

Answer 1

Answer:

25) 32.52.

38.25 x .15 = 5.73

then subtract that amount from the total

38.25-5.73=32.52

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Find the result when 28 is decreased by 25%

Answers

Answer: 21

Step-by-step explanation:

28-(28/100)*25=28-7=21

28•.25%=7
28-7=21
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12/4+(5 power of 2 -6)

Answers

12/4 is 3+5 to the power of -4
5 to the negative 4 power is .0005 plus 3 is 3.0005 I'm sorry if its wrong but that is my answer if I'm reading it right

Hailey records the weights of five dogs of one breed and five dogs of another breed.What can she infer about the weights of Breed 1 dogs and Breed 2 dogs?

Breed 1: {45, 38, 49, 52, 51}
Breed 2: {36, 35, 44, 50, 40}

A.
Breed 1 dogs and Breed 2 dogs have similar weight distributions.

B.
Breed 1 dogs and Breed 2 dogs have somewhat similar weight distributions.

C.
Breed 1 dogs and Breed 2 dogs have no overlap in their weight distributions.

D.
Breed 1 dogs and Breed 2 dogs have identical weight distributions.

Answers

Breed 1 dogs and Breed 2 dogs have somewhat similar weight distributions.

Your answer is B

Welcome again :)

Answer:

B.) Breed 1 dogs and Breed 2 dogs have somewhat similar weight distributions.

Step-by-step explanation:

a rectangle has an area of 30 square meters and a perimeter of 34 meters what are the dimensions of the rectangle

Answers

(length)(width) = 30
2(length) + 2(width) = 34

Start by finding factor pairs of 30: (1 and 30), (2 and 15), (3 and 10), (5 and 6). Now figure out which of these pairs solve the second equation above.

Logically you could eliminate the first one (because 2 x 30 is greater than 34 alone), so move on to the second.

2(2) + 2(15) = 34
4 + 30 = 34
34 = 34

Therefore the dimensions are 2 x 15

The ratio of boys to girls on a swimming team is 3 to 4. the team has 70 members. how many are boys?

Answers

Number of boys are 30

Assume number of boys (X) , Number of Girls (Y)
X + Y = 70 (1)
X/Y = 3/4
Y = 4/3X (2)

replacing the value of Y in (2) in number (1)

X + 4X/3 = 70
7X/3 = 70
7X = 210
X = 30

so number of boys = 30 boys

Which equation finds the area of a square with a side length of 5n4 units?