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Sholpan [36]
3 years ago
8

Solve this trinomial Z^2 + z = -20

Mathematics
1 answer:
Naddik [55]3 years ago
4 0

Answer:

your answer is a complex number making your question wrong

Step-by-step explanation:

First z²+z+20=0, just to make it a quadratic equation, so we can use the quadratric formula:

x=( -b±√b²-4ac)/2a

so to find a b and c we compare

YOUR QUESTION SHOULD BE Z² +Z-20=O.

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11. The student government is selling flowers for homecoming. The project costs them $20 for advertising and
MatroZZZ [7]

Answer:

32

Step-by-step explanation:

  • 3(n+20) = 3(4+20) = 3(24) = 72
  • 3n+20 = 3(4)+20= 12+20=32

If n represents the amount of flowers they sold, then the correct answer should be 32. The cost for each flower they sold would be 3 x 4 and then add $20 for advertising.

8 0
3 years ago
Select the correct answer.
BigorU [14]

Answer:

B. a^3b

Step-by-step explanation:

Exponent Rule: (b^m)^n = b^{mn}

Exponent Rule: \frac{b^m}{b^n} =b^{m-n}

Step 1: Write expression

\frac{(ab^2)^3}{b^5}

Step 2: Exponent Exponents

\frac{a^3b^6}{b^5}

Step 3: Simplify

a^3b

3 0
3 years ago
Which fraction is equivalent to -7/8. 8/-7, 7/-8, -7/-8, 8/7
lisov135 [29]
7/-8 is equal to -7/8 because both come out to -0.875
8 0
3 years ago
A pre-image arrow pointing east is rotated 135° clockwise. In which direction is the image arrow pointin​
Mila [183]

Given :

A pre-image arrow pointing east is rotated 135° clockwise.

To Find :

In which direction is the image arrow point.

Solution :

90° clockwise shift make it south.

Now, remaining angle for rotation ( 135 - 90 )° = 45°.

So, direction of moving 45° more clockwise makes it 45° west of south or 45° south of west.

Hence, this is the required solution.

6 0
3 years ago
Water is being pumped into a reservoir tank. The total amount of water (w) after an amount of time (t) is given by the equation
pychu [463]

Answer:

it will take 8 minutes

Step-by-step explanation:

Here, we want to

calculate the amount of time taken to fill the tank given the total amount of water in the tank.

Mathematically, the formula go

use is ;

w= 100 + 55t

540 = 100 + 55t

55t = 540-100

55t = 440

t = 440/55

t = 8

7 0
3 years ago
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