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Rainbow [258]
3 years ago
5

Multiply (2 – 71)(-1 + 47)

Mathematics
2 answers:
Serhud [2]3 years ago
6 0
(2-7i)(-1+4i)
2x-1=-2
2x4i= 8i
-7ix-1=7i
-7ix4i=-28i^2

so the answer is
-2+8i+7i+28i^2
=28i^2+15i-2

:)
igomit [66]3 years ago
6 0
Will this help? You can only Multiply the Same variables. I need to sleep now :)

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I don't understand this math problem need help plz!
9966 [12]

Answer:

A' (-4, - 7), B' (-5, -4), C' (-4, -3), D' (-3, -4)

Step-by-step explanation:

When rotating about the origin at an angle of 90° in the counterclockwise direction, the given values of (x, y) are interchanged with y also taking a negative sign. That is ;

(x, y) - - - -> (-y, x)

Therefore, in the question above ;

Translation = (x-2, y+3)

A =(-5, 1) = (-5 - 2, 1 + 3) = (-7, 4) - - -> A' = (-4, - 7)

B =(-2, 2) = (-2 - 2, 2 + 3) =(-4, 5) - - -> B' = (-5, -4)

C =(-1, 1) = (-1 - 2, 1 + 3) = (-3, 4) - - -> C' = (-4, -3)

D =(-2, 0) = (-2 - 2, 0+3) =(-4, 3) - - -> D' = (-3, -4)

5 0
4 years ago
54. log(20x) - log4 = 2​
Luba_88 [7]

Answer:

x=e^2/5

Step-by-step explanation:

log(20 x) - log(4) = 2

Add log(4) to both sides:

log(20 x) = 2 + log(4)

Cancel logarithms by taking exp of both sides:

20 x = 4 e^2

Divide both sides by 20:

And we get Answer:

x = e^2/5

4 0
4 years ago
Solve: 56(-56+57m)+ 45m
N76 [4]

Answer:

I just solved this as well and I got 102m as well.

Step-by-step explanation:

56 and -56 cancek eachother out. 57m + 45m can be added since they have the same variable. 57 + 45 is 102. So the answer is 102m.

6 0
3 years ago
Read 2 more answers
Two interior angles $A$ and $B$ of pentagon $ABCDE$ are $60^{\circ}$ and $85^{\circ}$. Two of the remaining angles, $C$ and $D$,
lisov135 [29]

The largest angle is E = 205°.

<h3>What is a pentagon?</h3>
  • A pentagon is any five-sided polygon or 5-gon in geometry.
  • A basic pentagon's internal angles add up to 540°.
  • A pentagon might be straightforward or self-intersecting.
  • A pentagram is a self-intersecting regular pentagon (or a star pentagon).

To find the measure of the largest angle:

The sum of interior angles of a polygon is:

  • Sum = 180° × (n - 2)

Where n is the number of sides.

Here n = 5, as pentagon has 5 sides.

  • Sum = 180° × 3 = 540°

Let, C = D = x

Then, E = 2x + 15 (15 more than twice C)

We can express the sum of the 5 angles as:

  • 60 + 85 + x + x + 2x + 15 = 540

Simplify the left side by collecting like terms:

  • 4x + 160 = 540

Subtract 160 from both sides:

  • 4x + 160 - 160 = 540 - 160
  • 4x = 380

Divide both sides by 4:

  • 4x/4 = 380/4 = x = 95
  • C = D = x = 95°
  • E (2 × 95) + 15 = 205°

The 5 interior angles of the pentagon are:

  • 60° + 85° + 95° + 95° + 205° = 540°

The largest angle is E = 205°.

Therefore, the largest angle is E = 205°.

Know more about a pentagon here:

brainly.com/question/25917702

#SPJ4

8 0
2 years ago
Use the following function to answer the questions please-
andrew-mc [135]

D. all real numbers

the function is exponential growth.

7 0
3 years ago
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