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RoseWind [281]
4 years ago
12

Hi guys can u pls help me with this problem thanx

Mathematics
1 answer:
salantis [7]4 years ago
8 0

Answer:

\frac{1}{4} left

Step-by-step explanation:

The question says she used \frac{1}{2} of it, so she probably used \frac{1}{2} of it. I'm assuming this is an error in the question, and it should be asking how much is left. To solve for that:

\frac{3}{4} - \frac{1}{2}

make denominators equal

(\frac{2}{2} × \frac{3}{4}) - (\frac{1}{2} × \frac{4}{4})

\frac{6}{8} - \frac{4}{8}

\frac{2}{8}

\frac{1}{4}

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A point of the form 25 +bi is 37 units from 13 – 31i. What is the value of b
Svetach [21]

If we consider the positive value of b, then the value of b is 4.

<h3>What is the coordinate plane of a complex number?</h3>

A complex number in the form z = x + iy takes a coordinate plane in terms of (x,y). From the given information, we are given a distance between two points:

  • 25 + bi = (25,b)
  • 13-31i = (13, -31)

Now, the distance between two points can be represented by using the relation:

\mathbf{D = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}}

\mathbf{37 = \sqrt{(13-25)^2+(-31-b)^2}}

\mathbf{37 = \sqrt{(-12)^2+(31+b)^2}}

\mathbf{37 = \sqrt{144+(31+b)^2}}

Taking the square of both sides

1369 = 144 + (31 + b)²

1369 - 144 = (31 + b)²

1225 = (31 + b)²

(31 + b)² = (35)²

(31 + b) = ±35

b = 35 - 31 or -35 -31

b = 4 or -66

Learn more about solving complex numbers here:

brainly.com/question/23729437

#SPJ1

8 0
2 years ago
How many solutions for x does the following equation have?<br><br> 2(x+4) - 1 - 2x + 7
Dmitry [639]

Answer:

There is no sign you can not figure it out

Step-by-step explanation:

4 0
4 years ago
Plz help me I don’t get this
Svetlanka [38]

Set up a proportion, cross multiply, and solve.

\frac{7.2}{4} =\frac{x}{3}

3(7.2) = 4(x)

21.6 = 4x

5.4 = x

7 0
3 years ago
Z^4 / z (when z = 1)
Alex

Answer:

1

Step-by-step explanation:

1^4= 1

1/1= 1

8 0
4 years ago
Becca has a biscuit recipe that uses 2/3 of a tablespoon of salt for every 3/4 of a cup of flour. In order to have enough biscui
MAXImum [283]
 2/3   -  3/4
   x    -  3

x= (2/3 * 3) / (3/4) = 2 * (4/3) = 8/3 = 2 and 2/3 of tablespoon of salt  
3 0
3 years ago
Read 2 more answers
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