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Tomtit [17]
4 years ago
8

Question on attachment below! Step - by - step work please!

Mathematics
2 answers:
lina2011 [118]4 years ago
8 0

Answer:

You would need $23.87

Step-by-step explanation:

Cost for 6 books is 20.46

Finding the unit cost:

the cost of one single book will be amount for 6books ÷ 6

= 20.46 ÷ 6

= 3.41

We need to find the cost of 7 books so now that we know it for one book, we multiply that amount by 7

Therefore,

3.41 x 7

= 23.87 dollars

Sergio [31]4 years ago
7 0

Answer:

You would need $23.87.

Step-by-step explanation:

Divide $20.46 by 6 which equals $3.41. Multiply $3.41 by 7 and you get $23.87.

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What is the surface area of the solid?
Vadim26 [7]

Answer:

im pretty sure its C

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The sum of a number and 21 equals 30 find the number​
ch4aika [34]

Answer:

The number would be 9.

Step-by-step explanation:

Subtract 21 from 30 to get 9.

7 0
3 years ago
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Which function has a greater slope and y-intercept than the linear function represented in the table?
Sav [38]

Answer:

B) y=3x+7.5

Step-by-step explanation:

The equation of the data in the table can be obtained by using any two points.

We will use points (3, 13) and (5,17)

<u>The slope - intercept form is: </u>

  • y = mx  + b

<u>We find the slope as:</u>

  • m = (17-13)/(5-3) = 4/2 = 2

<u>The equation becomes:</u>

  • y = 2x + b

<u>To find the value of b, the y -intercept is:</u>

  • 13 = 2*3 + b ⇒ b= 13 - 6 = 7

<u>So the equation is:</u>

  • y = 2x + 7

<u />

<h3>Now let's compare this with the options</h3>

A) y = 2x + 8.5

  • The slope is 2, and y- intercept is 8.5
  • It has same slope and greater y-intercept
  • Answer is <u>no</u>

B) y=3x+7.5

  • The slope is 3, and y- intercept is 7.5
  • It has greater slope and greater y-intercept
  • Answer is <u>yes</u>

C) y=5x+6.5

  • The slope is 5, and y- intercept is 7.5
  • It has greater slope but smaller y-intercept
  • Answer is <u>no</u>

D) y=10x+5.5

  • The slope is 10, and y- intercept is 5.5
  • It has greater slope but smaller y-intercept
  • Answer is <u>no</u>

5 0
4 years ago
what is the experimental probability of the spinner of it landing on blue? if it has green in the upper left corner, blue in the
Sidana [21]
1/4 are you chances in that question
7 0
3 years ago
HELP! Evaluate tan 45ddegrees /sin 30 degrees. In your final answer include all calculations
nadezda [96]
<h2>Hello!</h2>

The answer is: 2

<h2>Why?</h2>

Before solving the problem, we must remember the following:

tan(\alpha)=\frac{sin(\alpha)}{cos(\alpha)}

So, for tan(45°) we have:

tan(45)=\frac{sin(45)}{cos(45)}\\ \\\frac{sin(45)}{cos(45)}=\frac{\frac{\sqrt{2} }{2} }{\frac{\sqrt{2} }{2} }=1

Also, for sin(30°), we have:

sin(30)=\frac{1}{2}

Then, substituting and dividing, we have:

\frac{tan(45)}{sin(30)}=\frac{1}{\frac{1}{2}}\\\\\frac{1}{\frac{1}{2}}=1*\frac{2}{1}=2

So, the answer is 2.

Have a nice day!

6 0
4 years ago
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