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natka813 [3]
3 years ago
12

Which expression is equivalent to (3-5i)-(-2+i)

Mathematics
1 answer:
N76 [4]3 years ago
3 0

Answer:

-6i + 5

Step-by-step explanation:

(3-5i)-(-2+i) = 3 - 5i + 2- i = (-5i - i) + (3 + 2) = -6i + 5

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What could be the ordered pairs representing vertices C and D of quadrilateral abcd so that the new fire department is congruent
ohaa [14]
Given that <span>a city grid of Anytown, USA is shown on the grid below. The fire department is represented by quadrilateral RSTU. Another fire department is opening in a different part of the city to maximize fire protection. The size of the new department's property must be congruent to the older department. Vertices A and B are plotted on the grid to represent two vertices of the new fire department quadrilateral ABCD.

Map of Anytown; the line y equals 7 is Main Road; the line y equals 3 is Rose Lane; the line y equals negative 1 is Crystal Avenue; the line x equals negative 4 is Brick Street; the diagonal line is Dogwood Drive; Old Fire Department forms quadrilateral with ordered pairs R at negative 4, 7, S at negative 1, 7; T at negative 1, 3; U at negative 4, 3; A is at 4, negative 1 and B is at 1, negative 1

Recall that t</span><span>wo shapes are said to be congruent if the lengths of the sides and the angles are the same.

For quadrilateral RSTU to be congruent to quadrilateral ABCD, then RS = AB, RU = AD, ST = BC and TU = CD

Also, the figure ABCD is a result of a rigid body translation of the figure RSTU.

Given that R is at point (-4, 7) and A is at point (4, -1), also given that S is at point (-1, 7) and B is at point (1, -1).

It can be seen that points AB is a result of refrecting points RS across the y-axis and then shifting the resulting points down by 8 units.

Thus, given point T as (-1, 3) and point U as (-4, 3), refrection of points T and U across the y-axis will result in points (1, 3) and (4, 3), then shifting the resulting points down by 8 units will result to points (1, -5) and (4, -5)

Therefore, the ordered pairs representing vertices C and D of quadrilateral ABCD so that the new fire department is congruent to the old fire department are C(1, -5) and D(4, -5).</span>

3 0
3 years ago
A car salesperson works 40 hours per week at a job where he has two options for being paid. Option A is an hourly wage of ​$16.
mr_godi [17]

10%

since he works 40 hours per week and gets $16 an hour, that would be 16 * 40 which is 640, so that means he needs a commission rate of 10% as 10% of 6400 is 640.

hope this is helpful!

7 0
3 years ago
Calculate whether a2 + b2 is &gt;, &lt;, or = to c2
max2010maxim [7]
Should be = when thinking of pathogorean theorm
8 0
3 years ago
An object is thrown upward from the top of an 80ft tower.
sweet [91]
C because if you solve for the solutions for the quadratic, then you get 5 and -1 but you cant have negative seconds so 5 is the right answer!
5 0
4 years ago
What is the zero of r(x)=8/3x-8<br> ?
asambeis [7]
Here’s the solution:

13-(3/3) = 37

1*x^4-(1*x^2)+0*x^3+0*x+24 = 0

13/7 = v/6

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1/(x-4)-(1/(x-3)) > 0
6 0
3 years ago
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