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algol [13]
3 years ago
13

Help Me With This Question Please! I'm Answering This Question For A Hard Time! :(

Mathematics
1 answer:
Rom4ik [11]3 years ago
3 0

Answer:

Step-by-step explanation:

The main goal in any equation is to get the unknown variable all by itself.  In this case that means moving the fraction of 7/8 over to the other side of the equals sign.  On the left, the fraction is being subtracted; that means that to move it to the other side, we add it since adding is the opposite of subtracting.

x-\frac{7}{8}+\frac{7}{8}=4+\frac{7}{8}

On the left side, if you have 7/8 and then take that 7/8 away, it's gone completely.  What we have now is

x=4+\frac{7}{8}

We need a common denominator so we can add 4 (which is 4/1) to 7/8.  8 is the common denominator.

x=\frac{4}{1}(\frac{8}{8})+\frac{7}{8} and

x=\frac{32}{8}+\frac{7}{8} giving us

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-2 with a exponent six
DIA [1.3K]
-2^{6} 

 =  -2 with a exponent six
Well Exponents mean that you multiply the number 6 times. 
Soo..
-2^{6} = -2 x -2 x -2 x -2 x -2 x -2 = 64 

So <span>-2^{6} = 64 
</span>
Good Luck! :)

5 0
3 years ago
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Peri spent 40% of her money on books and 50% of the rest on toys. She has $21. How much money did she have first.
Vlad1618 [11]
40/100 + 50/100 = 90/100

il lui reste  10/100 ou 21 $

10 % = 21 $
100 % = 210 $
6 0
4 years ago
There are four white socks and six black socks in a drawer. What is the probability of selecting a white sock, not replacing it,
m_a_m_a [10]

Answer:

A: 1/3

Step-by-step explanation:

please mark this answer as brainlest

8 0
3 years ago
The circumference of a circle is 10pi cm. What is the Radius of the circle?
enot [183]

Answer3:

Step-by-step explanation:

I do not know

6 0
3 years ago
Read 2 more answers
The distribution of the amount of money spent by students on textbooks in a semester is approximately normal in shape with a mea
zheka24 [161]

Answer:

$301 - $397

Step-by-step explanation:

Using the Empirical rule

1) 68% of data falls within 1 standard deviation from the mean - that means between μ - σ and μ + σ .

2)95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .

3)99.7% of data falls within 3 standard deviations from the mean - between μ - 3σ and μ + 3σ .

From the above question,

Mean = 349 , standard deviation = 24.

Confidence interval = 95%

Using 2)95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .

μ – 2σ

= 349 - 2(24)

= 349 - 48

= 301

μ + 2σ

349 + 2(24)

= 349 + 48

= 397

Therefore, according to the standard deviation rule, approximately 95% of the students spent between $301 and $397 on textbooks in a semester.

8 0
3 years ago
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