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krok68 [10]
3 years ago
14

Sharon read a 300-page book. She read at a rate of 15 pages per day in d days.

Mathematics
2 answers:
Gnom [1K]3 years ago
8 0
15 times D= 300    
 the 15 is pages
 D is pages per day
 300 is amount of total pages           
uysha [10]3 years ago
6 0

Answer:

300=15d

Step-by-step explanation:

that is the answer because

Sharon read  300, pages at a rate of 15 , 15 pages per day. The number of days read is unknown, which we’re calling d.

The, rate times the number of day is equal to 300, 300.

We can describe this situation with an equation:

15, 15 d 300, 300,

We can also write this as:{15}300=15 300 equals 15, d, {15}}d=  

15

300

​  

start color  d, end color  equals, start fraction, start color # 300, end color  divided by, start color  15, end color  end fraction, or  

15

300

​  

=d fraction,, 300,, divided by 15  equals,  d,

The equation is 300=15d300,=15d300, equals, 15, d or any of the equivalent equations above.

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Nataliya [291]

Using proportions, it is found that:

  • In an 8-hour day, she keys 48 pages.
  • For a day, her gross earnings are of $72.
  • For a week, her gross earnings are of 72 x 7 = $504.

<h3>Proportions:</h3>

This question is solved using the proportions given, which are:

  • Payment of $1.50 per page of 30 lines.
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Hence, in an 8-hour day, she keys 6 x 8 = 48 pages.

Since she earns $1.50 per page, for a day, her gross earnings are of 48 x 1.5 = $72.

Considering a week has 7 days, for a week, her gross earnings are of 72 x 7 = $504.

To learn more about proportions, you can take a look at brainly.com/question/24372153

5 0
2 years ago
Y is inversely proportional to x.
Inessa [10]

Answer:

1. xy = 63

2. y = 3

Step-by-step explanation:

Given

Variation: inverse Proportion

y = 7, x = 9

Required

- Write an equation connecting y and x

- Find y when x = 21

Given that thee variation is inversely proportional;

This implies that

y\ \alpha\ \frac{1}{x}

Convert variation to equation

y\ = \frac{k}{x} ----------- Equation 1

Where k is the constant of variation

Substitute 7 for y and 9 for x in equation 1

7 = \frac{k}{9}

Multiply both sides by 9

9 * 7 = 9 * \frac{k}{9}

63 = k

Substitute 63 for k in equation 1

y = \frac{63}{x}

Multiply both sides by x

x * y = \frac{63}{x} * x

xy = 63

Hence, the equation connecting x and y is xy = 63

Solving for when x = 21

Substitute 21 for x in the above equation

21 * y = 63

Divide both sides by 21

\frac{21 * y}{21} = \frac{63}{21}

y = 3

4 0
3 years ago
The height of a right rectangular prism is 3 units greater than the length of the base. The edge length of the square base is x
jok3333 [9.3K]

Answer:

B. x^3 + 3x^2

Step-by-step explanation:

Volume of a rectangular prism=width * length * height

V=w*l*h

h=3 greater than the length of the base

h=x+3

Length of the base=x

Width=x

Substituting values into the formula

V=w*l*h

=(x)*(x)*(x+3)

Multiplying

=(x^2)(x+3)

=x^3 + 3x^2

Option B is the correct answer

5 0
3 years ago
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TanA+tanB+tanAtanB=1 If A+B=45 degree​
djyliett [7]

Answer:

See below

Step-by-step explanation:

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8 0
2 years ago
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