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alexdok [17]
3 years ago
5

List the prime numbers between 60 and 80

Mathematics
2 answers:
natulia [17]3 years ago
7 0
61, 63, 67,71,73,79,81,83
lubasha [3.4K]3 years ago
4 0
61 67 71 73 79 are the prime numbers between 60 and 80.
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mindy had 13 flowers. she gave some to sarah. she has 9 left. how many flowers did she give to sarah?
lianna [129]

Answer:

4

Step-by-step explanation:

13 flowers- 9 left =4give

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3 years ago
Two complex numbers are represented by c + di and , where c, d, e, and f are positive real numbers. In what two quadrants may th
myrzilka [38]

Answer: In quadrant 1 or quadrant 2.

Step-by-step explanation:

We have the numbers:

x = c + di

y = e + fi

where c, d, e and f are real positive numbers.

the product of these numbers is:

x*y = (c + di)*(e + fi) = c*e + c*fi + d*ei ´+d*f*i^2

x*y = c*e - d*f + (c*f + d*e)i

where I used that i^2 = -1

knowing that c,f, d and e are positive numbers, then the imaginary part of the product must be always positive.

For the real part, we have c*e - d*f, that can be positive o negative depending on the values of c, e, d, and f.

So we have that the product must lie always in one of the upper two quadrants, quadrant 1 or quadrant 2 because the imaginary part is always positive and the real part can be positive or negative.

6 0
3 years ago
PLEASE HELP ASAP!!! CORRECT ANSWERS ONLY PLEASE!!! I CANNOT RETAKE THIS!!<br><br> Solve for x.
m_a_m_a [10]

also the last one your correct

7 0
3 years ago
Adrianne invested $2000 in an account at a 3.5% interest rate compounded annually. She made no deposits or withdrawals on the ac
Musya8 [376]

Answer:

2,295  dollars

Step-by-step explanation:

This is our equation that I could find within this question.

2000(1+.035)^4

==> 2000(1.035)^4

==> 2000 * 1.1475

==> 2,295

7 0
3 years ago
A knitter wants to make a rug for a dollhouse. The length of the rug will be 2 inches more than it’s width. The total area of th
steposvetlana [31]

The width of the rug is 3 inches

Step-by-step explanation:

A knitter wants to make a rug for a dollhouse

  • The length of the rug will be 2 inches more than it’s width
  • The total area of the rug ( in square inches) based on the width w of the rug (in inches ) is given by A(w) = w (2 + w)
  • The desired area of the rug is 15 square inches

We need to find the width of the rug

∵ The area of the rug is A(w) = w(2 + w)

- Simplify the right hand side

∴ A(w) = 2w + w²

∵ The desired area of the rug is 15 square inches

- Equate A(w) by 15

∴ 2w + w² = 15

- Subtract 15 from both sides

∴ 2w + w² - 15 = 0

- Its a quadratic equation arrange its terms from the greatest power of x

∴ w² + 2w - 15 = 0

Factorize it into two binomial factors

∵ w² = w × w

∵ 15 = 3 × 5

∵ 5w - 3w = 2w

∴ w² + 2w - 15 = (w -3)(w + 5)

∴ (w - 3)(w + 5) = 0

- Equate each factor by 0

∴ w - 3 = 0 OR w + 5 = 0

∵ w - 3 = 0

- Add 3 to both sides

∴ w = 3

∵ w + 5 = 0

- Subtract 5 from both sides

∴ w = -5 ⇒ rejected because no dimension with -ve value

∴ w = 3 only

The width of the rug is 3 inches

Learn more:

You can learn more about the quadratic equation in brainly.com/question/9328925

#LearnwithBrainly

8 0
3 years ago
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