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Sloan [31]
4 years ago
9

Khan Academy Question 1

Mathematics
1 answer:
dybincka [34]4 years ago
7 0

Answer:

1). x > 4/3   2). x > 2

Step-by-step explanation:

1). 3x - 91 > -87                   2). 17x - 16 > 18

  3x > 4                                    17x > 34

  x > 4/3                                    x > 2

Hope this helps)))

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Solve tan 7 = h/3.2 <br> give the answer to 2 decimal places
UkoKoshka [18]
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We calculate tan(7) then multiply by 3.2 to solve for h
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2 years ago
The cone shown below has a slant height of 15 centimeters and a height of 12 centimeters. What is the radius of the cone.​
Rzqust [24]

Answer:

The answer to your question is 9 cm

Step-by-step explanation:

Data

slant height = 15 cm

height = 12 cm

radius = ?

Process

To solve this problem, use the Pythagorean theorem. The slant height is the hypotenuse, the height is the long leg and the radius is the short leg.

             c² = a² + b²

           slant height² = height² + radius²

-Solve for radius

           radius² = slant height² - height²

-Substitution

           radius² = 15² - 12²

-Simplification

            radius² = 225 - 144

            radius² = 81

-Result

            radius = 9 cm

6 0
4 years ago
Read 2 more answers
doris tiene en su cartera billetes de $10 y de $20.si en total tienen 25 billetes y $330 ¿cuantos billetes tiene cada uno?
inessss [21]

Answer:

8 billetes de 20

17 billetes de 10  

Step-by-step explanation:

4 0
3 years ago
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I need to solve this system of equations, how do I do that?<br> 3x-4y=20<br> y=3/4x-5
Paha777 [63]

Answer:

Is is Infinitely many solutions so 0=0

<em><u>Step-by-step explanation:</u></em>

<h3>First we have to rearrange/simplify the equations:</h3>

Equation 1: 4y - 3x = -20

Equation (2):  y - 3x/4  = -5

<h3>Then you remove the fractions by multiplication: </h3>

Multiply equation (2) by 4

<h3>The Equations now look like this: </h3>

Equation 1: 4y - 3x = -20

Equation (2): 4y - 3x = -20

<h3>Solve for y on Equation (2):</h3>

y = <u><em>3x/4 - 5</em></u>

<h3>Then plug in this for the y in Equation 1 and then solve:</h3>

4•(<u><em>3x/4-5</em></u>) - 3x = -20

Therefore the answer leads to:

Infinitely many solutions, 0=0

Hope this helped :')

4 0
3 years ago
a ribbon is 12.3 feet long. another is 3.12 feet shorter than it. what is the total length of the two ribbons?
Vika [28.1K]
21.1 Because 12.3-3.12 is that answer.
5 0
4 years ago
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