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Irina-Kira [14]
3 years ago
7

I NEED HELP WITH THIS

Mathematics
1 answer:
lys-0071 [83]3 years ago
8 0

Answer:

A

Step-by-step explanation:

when we multiply the second equation by -2,

it gives -6x + 2y = -8 now we have a same magnitude of y value in both the equations and opposite sign. When we add them they cancel out.

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One population proportion test: Which of the following situations involves testing a claim about a single population proportion?
kicyunya [14]

Answer:

A recent report estimated that 25% of all college students in the United States have a sexually transmitted disease (STD). The director of the campus health center believes that the proportion of students with STDs is higher at their campus.

According to the American Heart Association guidelines, the daily maximum amount of sugar a teenager should have is 4 teaspoons. The parents of a local high school have expressed concerns that the average daily sugar intake of their students is higher than these guidelines and have been pressuring school officials to limit unhealthy snack and beverage choices offered in the cafeteria and student store.

Step-by-step explanation:

The first two researches involve the single sample compared to mean of population.

The 3rd and 4th research involves comparing samples of men and women that is two individual groups.

4 0
4 years ago
Please answer quickly!!! <br> Need help
Anna [14]

Answer:

A- the graph of f(x) is shifted 7 units down

Step-by-step explanation:

5 0
3 years ago
Can u guys pls help me on this question and pls explain how u got the answer
DaniilM [7]

Answer:

192 mm

Step-by-step explanation:

The area of a triangle is 1/2 bh and the base is 8 and the height is 8. 8*8= 64 divided by two is 32. There are four of these sides, so 4* 32 is 128. Then you also have to account for the square bottom which has dimensions of a width of 8 and a height of 8 making the bottom 64. When you add 128 and 64 together you get 192.

Hope this helped  

5 0
3 years ago
Identify the factors of 13m-2n
scZoUnD [109]
The factors of 13m are 13 and m and it goes the same with 2n hope that helps.

3 0
4 years ago
Read 2 more answers
If someone helps me with all of them i will mark them as brainliest​
Harlamova29_29 [7]

Answer:

Step-by-step explanation:

1.  (a) 24 X 3/4= 18 multiplication

you have to multiply to get a smaller answer since you are using a fraction.

2. (a) 24 / (-3/4)= -32 division

you have to divide to get a bigger number than started since you are using a fraction

3. (A) 12-15= -3 subtraction

when you subtract a bigger number than the first number you end up normally with a negative number

4. (a) 12 -(-15) subtraction

when you subtract with a negative number you distribute so the two negatives cancel out and it become an addition sign. (if you look at it the two negatives and the parenthesis looks like an addition sign (+)

5. (A) -18 / (-3/4) =24 division

when you divide two negative values you will always get a positive answer. And again dividing a fraction will get you a bigger answer.

8 0
3 years ago
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