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lilavasa [31]
3 years ago
7

an online poll of 810 adults found that 53% of the respondents think critical thinking should be taught in schools what is the m

argin of error
Mathematics
1 answer:
Snowcat [4.5K]3 years ago
6 0
53% of 810 people is 429.3. it's impossible for 1/3 of a person to vote.
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Scott runs 7 miles in 80 minutes. At the same rate, how many miles would he run in 64 minutes?
Alika [10]

Answer:

5.6 miles

Step-by-step explanation:

7 / 80 = 0.0875 (How many miles per min)

0.0875 * 64 = 5.6 miles

5 0
3 years ago
Maggie’s brother is three years younger than twice her age. The sum of their ages is 24. How old is maggie?
JulsSmile [24]

To solve this problem, we must set up a system of equations. In this case, let's let Maggie's age be represented by the variable m and her brother's age be represented by the variable b. We are told that the sum of their ages is 24, which gives us our first equation: m + b = 24. We can construct our next equation from the first sentence of given information: b = 2m - 3. This makes our system of equations:

m + b = 24

b = 2m - 3

To solve, we are going to substitute the value for b in terms of m given by the second equation into the first equation for the variable b.

m + b = 24

m + 2m - 3 = 24

To simplify, we must first combine the variable terms on the left side of the equation using addition.

3m - 3 = 24

Next, we should add 3 to both sides of the equation to get the variable term alone on the left side of the equation.

3m = 27

Finally, we should divide both sides by 3 in order to get the variable m alone.

m = 9

Therefore, Maggie is 9 years old (using the first equation and substituting in this value you can find that her brother is 15 years old).

Hope this helps!

8 0
3 years ago
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Solve (-4-7i)-(4+5i)-(2-i)
Mashcka [7]

Answer: −10−11i

Simplify the expression

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3 years ago
Please i really need it rn pls
Step2247 [10]

The 3rd option is correct

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3 years ago
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THIS IS A QUESTION FROM MY FINAL EXAM PLEASE HELP
snow_lady [41]

Answer:

0.44

Step-by-step explanation:

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2 years ago
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