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kipiarov [429]
3 years ago
7

Can someone answer these questions for me? It's for my study guide. I will be posting more questions soon.

Mathematics
1 answer:
marissa [1.9K]3 years ago
3 0
The first is 6.1 using the distance formula.
distance = sqrt((x2-x1)^2+(y2-y1)^2)
plug it all in and simplify
you get 6.1

the next one is the midpoint. u just take add both values of x together and divide by 2 to get the x coordinate and then add together both values of y and divide by 2 to get the y value. the midpoint is (8,7)

to find the perimeter of the rectangle, add the lengths of each side. 25 for the height and you would add 2 of those and then there are 2 sides as long as the length that you would add. it would be height+height+length+length which is 25+25+77+77=204. remember units so 204 ft
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please tell me the answer and I’ll mark u brainlist <br> I’m struggling
Sunny_sXe [5.5K]
a is a point, b is a line (extends forever in both directions) and c is a ray (extends forever in one direction)
4 0
2 years ago
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Divide in simplest form. 11/12 ➗3/4 <br> PLZZ HELP THIS IS A QUIZ I REPETE THIS IS A QUIZ!!
Lapatulllka [165]

Answer:

11/9

Step-by-step explanation:

It's called a calculator

Pls give Brainliest!!

3 0
3 years ago
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How many subsets of {1, 2, 3, 4, 6, 8, 10, 15} are there for which the sum of the elements is 15?
stepladder [879]

Answer:

512

Step-by-step explanation:

Suppose we ask how many subsets of {1,2,3,4,5} add up to a number ≥8. The crucial idea is that we partition the set into two parts; these two parts are called complements of each other. Obviously, the sum of the two parts must add up to 15. Exactly one of those parts is therefore ≥8. There must be at least one such part, because of the pigeonhole principle (specifically, two 7's are sufficient only to add up to 14). And if one part has sum ≥8, the other part—its complement—must have sum ≤15−8=7

.

For instance, if I divide the set into parts {1,2,4}

and {3,5}, the first part adds up to 7, and its complement adds up to 8

.

Once one makes that observation, the rest of the proof is straightforward. There are 25=32

different subsets of this set (including itself and the empty set). For each one, either its sum, or its complement's sum (but not both), must be ≥8. Since exactly half of the subsets have sum ≥8, the number of such subsets is 32/2, or 16.

8 0
3 years ago
A store has 7 red shirts, 15 black shirts, 13
AleksAgata [21]

Answer:First you have to add all of the shirts together, which gives you: 40

Since 15 of those are black, then you need to put those 15 over the total number of 40, making it 15/40.

Then you must simplify by the highest number that will go into both, and since that number is 5, it will then go into 15 three times and it will go into 40 eight times.

That leaves you with the answer of: 3/8

6 0
2 years ago
A letter is chosen from the word shown.
lakkis [162]

Answer:

That something unexpected is about to happen.

Step-by-step explanation:

7 0
2 years ago
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