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AlexFokin [52]
3 years ago
6

How do you think inequalities are different from equations you have worked with before?

Mathematics
1 answer:
dmitriy555 [2]3 years ago
4 0

Answer:

Inequalities are different from equations.  If you multiply or divide both sides of an equation by the same negative number, the equation remains the same, but If you multiply or divide both sides of an inequality by the same negative number, the inequality reverses.

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What is the slant height if the surface area is 395.64 square meters? (Use 3.14 for π .) r = 7 of a cone
kodGreya [7K]
1. The formula for calculate the area of a cone is:

 A=πr²+πrl  (1)

 A is the area (A=395.64 m²).
 π=3.14
 r is the radius (r=7).
 l is the height.

 2. The formula for calculate the slant height of the cone, is given by the Pythagorean theorem:

 h²=l²+r²
 h=√(l²+r²)   (2)

 h is the slant height.

 3. We don't know the value of "l", so:

 - We must rewrite the formula (1) and clear "l":

 A=πr²+πrl 
 A-πr²=πrl
 l=A-πr²/πr

 - Now, we must susbtitute l=A-πr²/πr, into the formula (2). Then, we have:

 h=√(l²+r²) 
 h=√[(A-πr²/πr)²+r²]

 A=395.64 m²
 π=3.14
 r=7

 4. When we substitute the values above into the formula h=√[(A-πr²/πr)²+r²], we obtain the slant height:
 
 h=√[(A-πr²/πr)²+r²]
 h=√170
 h=13 
<span>
 What is the slant height?

 The answer is: D.13</span>
6 0
3 years ago
Is 0.123 greater or is 1.23 greater?<br> Thank you!
zmey [24]

Answer:

1.23 is greater

Step-by-step explanation:

0.123 is only a fraction of a number it’s not a whole number. 1.23 is a whole number with an extra fraction of a number so it’s greater.

3 0
3 years ago
Read 2 more answers
. Gerald wants to borrow $12,000 in order to buy an engagement ring. He wants to repay the loan by making monthly installments f
garri49 [273]

Answer:

  $550.97

Step-by-step explanation:

The amortization formula will tell you the payment amount.

  A = P(r/12)/(1 -(1 +r/12)^(-12t))

where A is the monthly payment, P is the principal amount of the loan, r is the annual interest rate, t is the number of years. Using your values, this is ...

  A = $12,000(0.095/12)/(1 -(1 +0.095/12)^(-12·2)) ≈ $550.97

The amount of Gerald's payment is $550.97.

6 0
3 years ago
Jared made 4 bird houses in 3 days. How many days will it take him to make 28 bird houses.
pogonyaev
4 times 7 = 28

3 times 7 = 21

It will take him 21 days to make 28 bird houses.
6 0
3 years ago
Find area of a rectangle with vertices -9,3 -9,-7 -6,-7 and -6,-3
VikaD [51]
4 times 3 equals 12.
3 0
3 years ago
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