MATHEMATICS MIDDLE SCHOOL

Which of the following sets of measures for sides doesn't form a triangle?14, 18, 18
3, 3, 5
8, 8, 8
7, 9, 17

Answers

Answer 1
Answer: The sum of the two smallest numbers has to equal a number greater that the largest one. Or, how some people prefer it, the sum of any two numbers of the set has to be a greater number than the third one.

So, the set of sides 7,9,17 does not form a triangle.
because 7+9= 16, which is less than the greatest number, 17.
Answer 2
Answer:

Answer:

7,9,17 is the answer!

Step-by-step explanation:

brainliest is appreciated! Thank You!

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Write and solve a real world problem that can be represented by the expression (-3)(5)+10

Answers

i have rows of cookies, with 5 cookies in each row. i have to give 3 rows away, but after i do that then my friend gives me 10 cookies from their bag, what is the change in the total number of cookies i have.

this gets you the -3(5) and then + 10 which -3(5)+10 = -5

I lost 5 cookies

Problem:

The initial temperature of a room is equal to 10 degrees Celsius. The temperature of the room decreases by 3 degrees per day. Find the temperature of the room in 5 days.

Solution:

The temperature of the room in five days is given by the expression:

Resolving the expression we have:

Therefore, the temperature of the room for day number 5 is equal to -5 degrees Celsius.

Marisol is painting on a piece of canvas that has and area of 180 square inches. The length of the painting is 1 1/4 times the width. What are the dimensions of the painting?

Answers

Formula for the rectangle area is a * b, In this case we know that:

a * b = 180
a (width) = unknown
b (length) = 1 1/4a

We can write it down as:

a * 1 1/4 * a = 180
a² * 1 1/4 = 180                   / ÷ 1 1/4 (both sides)
a² = 144                             / square root (both sides)
a = 12

Doublecheck:

a = 12
b = 1 1/4 * 12 = 15
a * b = 12 * 15 = 180 (so it's correct)

Answer: The dimensions of the painting are 12 x 15 inches.

Karen, Leo, Mariah, Olivia, and Pedro bowled scores of 123, 132, 115, 124, and 131. Leo's score is lower than Karen's. Mariah got the highest score. The sum of the digits in Pedro's score is 7. Olivia's score was 8 points lower than another score. What was each friend's bowling score?

Answers

Mariah: 132
Pedro:124
Olivia: 123
Karen: 131
Leo:115

They way I solved this is by making a list of all the possible answers for each person, based on one fact at a time that they give you. Then, you can start looking at multiple, and start ruling things out.

Karen=131

Leo=124

Mariah=132

Olivia=123

Pedro=115

What is the equation of the line passing through the points (2/5, 19/20) and (1/3, 11/12)in slope-intercept form?

Answers

Answer:

y=1/2x+3/4

Step-by-step explanation:

Identity the property used in the first five steps to solve the equation 2(x-5)-6x=-22

Answers

2 ( x - 5 ) - 6 x = - 22

2 * x - 2 * 5 - 6 x  = -22

2 x - 10 - 6 x = -22

2 x - 6 x = - 22 + 10

- 4 x = - 12 * ( - 1 )

x = 12 / 4

x = 3

hope this helps!

What is 56 1/4 of 48 show me the work?

Answers

In mathematics, whenever you see the word 'of', that means "multiply". So, for this question, all we need to do is multiply our two numbers, and when we do, we get this result:

56 (1)/(4) * 48 = 56.25 * 48 = 2700

And there we have it.
56 (1)/(4) of 48 is 2,700.
Hope that helped! =)
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