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pychu [463]
2 years ago
14

(3-4i)(1+5i)-(2-1) Please give me the correct answer

Mathematics
1 answer:
attashe74 [19]2 years ago
8 0

Answer:

2-9i

Step-by-step explanation:

(3-4i)(1+5i)-(2-1)

Expand the algebra expression, and we have

3(1+5i)-4i(1+5i)-(1)

3+15i-4i-20i-1

Collect like terms

3-1+15i-4i-20i

2+11i-20i

2-9i

Please note that algebra expressions does not have the sign of equality.

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The area of the city of Vancouver is 115 km^2. if the shape of Vancouver is approximately a square, how wide is the city of Vanc
Dmitry [639]

Answer:

The wide of the city is 10.7km

Step-by-step explanation:

To solve this we first have to know the formula to calculate the area of ​​a square

a = area = 115 km²

s = side

a = s * s

now we replace with the known values

115 km² = s * s

115 km² = s²

√(115 km²) = s

10.724km = s

Round to the nearest tenth

s = 10.724km = 10.7km

The wide of the city is 10.7km

5 0
3 years ago
PLEASE HELP ME I WILL GIVE YOU POINTS
Brilliant_brown [7]

Answer:I got 18.28

Step-by-step explanation:

so for getting the perimeter, you only need the outer line, so you sum the measurements you have for the rectangle: 1+2+2+7= 12. After that you need the circumference of the circle, you can figure it out by using the formula C = 2pi(r) You can find the radius by substracting the known sides of the rectangle attached to the circle from the bottom base and then dividing it in 2, leaving us with a radius of 2. Then we input values; C=2pi(2) which equals 4pi, but we need to divide that in half since it’s only half a circle. That leaves us with 2pi, or 6.28. Then we add the perimeter of the square, which was 12, and 6.28+12= 18.28

4 0
2 years ago
What’s the slope to (3,5) and (-3,-5)
Firlakuza [10]
5/3 is the simplified slope.
6 0
3 years ago
Is 0.88 a terminating decimal
KengaRu [80]
Yes
hope this helped you
7 0
3 years ago
Read 2 more answers
BRAINLIEST QUESTION
Debora [2.8K]

Answer:

the answer is triangles ABC and DEC are similar

Step-by-step explanation:

angle C is a common angle for both triangles

angle D is equal to angle A ( corresponding angles)since they are parallel

angle B is also equal to angle B for the same reason as angle D and A

since the three angles of the two angles are equal they are similar

6 0
3 years ago
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