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miv72 [106K]
3 years ago
10

Alice wants to prove to her parents that listening to music while she does her homework will help her get better grades. She dec

ides to ask 25 of her friends if they listen to music while they do their homework and what their grades are. She finds that her friends who have high grades also listen to music while they do their homework. She tells her parents that she has proven that listening to music while doing homework will cause her grades to improve. What mistake has Alice made
Mathematics
2 answers:
alina1380 [7]3 years ago
4 0
She needs to make an experiment....peoples grades before they listen to music and peoples grades after they do.
Paha777 [63]3 years ago
3 0

Answer: the answer is B, I just took the test

Step-by-step explanation:

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Find x and y (Please answerrr) ​
m_a_m_a [10]

Answer: idont even know

Step-by-step explanation:

rfcgggggggggggggggggggdrthyjcgfdtey

6 0
4 years ago
(½) (6x + 3) = 7 – (3x + 1)
erastovalidia [21]

\tt Step-by-step~explanation:

To solve for x, we have to remember to isolate the variable.

\tt Step~1:

For 1/2, we can make that 0.5, since their values are equivalent. Our equation:

\tt (0.5)(6x+3)=7-(3x+1)

Let's distribute the 0.5 first.

\tt 0.5*6x=3x\\0.5*3=1.5

\tt Step~2:

Now, let's simplify the right side of the equation. We have to distribute the negative to 3x and 1.

\tt -1*3x=-3x\\-1*1=-1

Then, we simplify the entire expression.

\tt 7-3x-1=-3x+6

\tt Step~3:

Our equation now:

\tt 3x+1.5=-3x+6

Let's add 3x to the right and 3x to the left to simplify the -3x on the right side of the equation.

\tt 3x(+3x)+1.5=-3x (3x)+6\\6x+1.5=6

\tt Step~4:

Let's do the same thing we did in Step 3 to 1.5. Subtract 1.5 on both sides of the equation.

\tt 6x+1.5(-1.5)=6(-1.5)\\6x=4.5

\tt Step~5:

Finally, we divide both sides by 6 to isolate x.

\tt \frac{6x}{6} =x\\\frac{4.5}{6}= 0.75~or~\frac{3}{4}

\large\boxed{\tt Our~final~answer:~x=0.75~(or~\frac{3}{4})}

8 0
3 years ago
Dillon studied 3 6/7 hours for his English test. He studied 5 3/14 hours for his math test. How much longer did he study for his
yaroslaw [1]

Answer:

1 \frac{5}{14}, \frac{19}{14}

Step-by-step explanation:

How much longer did he study for his math test?

E=3\frac{6}{7}

M=5\frac{3}{14}

x=difference

An equation for this would resemble this:

M- E=x

Now before we get into any equation solving let's get the <em>denominators </em>equal to each other. we can do this by <em>multiplying </em>the <em><u>numerator</u></em> and <u><em>denominator</em></u><em> </em>by 2.     \frac{6(2)}{7(2)}=\frac{12}{14}

Now we can solve the equation:

5\frac{3}{14} - 3\frac{12}{14} =\frac{19}{14}

1 \frac{5}{14}, as a mixed number

<em>plz mark me brainliest. :0</em>

4 0
3 years ago
The state park has a perimeter of 38 miles. What is the area of the park . The width of park is 7 miles
weqwewe [10]

Answer:

84 miles

Step-by-step explanation:

7+7=14

38-14=24

24/2=12

12 length

7 width

7x12=84

3 0
3 years ago
-4.3x-(4.8(-4.3+1.8x)=104.75
Luda [366]

- 4.3x - [4.8( - 4.3 + 1.8x)] = 104.75 \\ x =  - 6.5
5 0
4 years ago
Read 2 more answers
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