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pishuonlain [190]
3 years ago
6

A book store is having a 30% off sale. Diary of a wimpy kid books are now $6.30 each. What was the original price of the books.

Mathematics
1 answer:
aev [14]3 years ago
8 0
The books were $8.19 original
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at a highschool, the length of a class period is 40 minutes. What is the length, in hours, of a class period at the high school?
Viktor [21]

Answer:

2/3 hours

Step-by-step explanation:

40 minutes = 40/60 = 2/3 hours

4 0
3 years ago
May someone help me with this problem?
Katyanochek1 [597]

Answer:

a. \:  \:  \frac{ {4x}^{6} }{ {y}^{3} }  \\

b. \:  \:  \frac{ {8x}^{3} }{ {y}^{ 1\frac{1}{3} } }  \\

Step-by-step explanation:

<h3>a. </h3>

{( {4x}^{ - 2} y)}^{ - 3}  \\  {4x}^{ - 2 \times  - 3}  \:  \: {y}^{1 \times  - 3}  \\  {4x}^{6}  {y}^{ - 3}  \\  \frac{ {4x}^{6} }{ {y}^{3} }  \\

<h3>b.</h3>

{( {8x}^{6} {y}^{ - 3})  }^{ \frac{1}{2} }  \\  {8x}^{6 \times  \frac{1}{2} } \:  \:  {y}^{ - 3 \times  \frac{1}{2} }   \\  {8x}^{3}  {y}^{  - \frac {3}{2} }  \\  \frac{ {8x}^{3} }{ {y}^{ 1\frac{1}{3} } } \\

7 0
2 years ago
Solve for b:<br><br> b² = 8b + 84
levacccp [35]
B² = 8b + 84
b² - 8b - 84 = 0
b = <u>-(-8) +/- √((8)² - 4(1)(-84))</u> 
                       2(1)<u>
</u>b = <u>8 +/- √(64 + 336)</u>
                   2
b = <u>8 +/- √(400)
</u>               2<u>
</u>b = <u>8 +/- 20
</u>            2
b = 4 <u>+</u> 10
b = 4 + 10          b = 4 - 10
b = 14                b = -6
<u />
4 0
3 years ago
What is the value of x if x squared = 37/81
HACTEHA [7]

Answer:

x = ±√37/9

Step-by-step explanation:

x² = 37/81

√(x²) = √(37/81)

x = ± √(37)/√(81)

x = ± √37/9

4 0
3 years ago
Which best describes how to solve the equation for x.
prohojiy [21]

Answer:

B. multiply both sides by c.

Step-by-step explanation:

To solve the equation for x, you have to isolate the x variable on one side of the equation. To do this, do the opposite of any operation applied to x to remove other variables from the x's side of the equation:

x/c = d

multiply both sides of the equation by c to isolate x:

(x/c) * c = d * c

x = dc

Now x can be solved for.

Hope this helps :)

7 0
2 years ago
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