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2 years ago

Add the complex numbers: (-3+4i)+(7-i)

Mathematics

1 answer:

Romashka [77]2 years ago

5 0

The answer is (3i+4)

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Hello, can someone help me with this problem?

exis [7]

Answer:

Area of Rectangle A

$Area = 4x^2$

Area of Rectangle B

$Area = 2x^2$

Fraction

$Fraction =\frac{2}{3}$

Step-by-step explanation:

From the attached, we understand that:

The dimension of rectangle A is 2x by 2x

The dimension of rectangle B is x by 2x

Area of rectangle is calculated as thus;

$Area = Length * Breadth$

Area of Rectangle A

$Area = 2x * 2x$

$Area = 4x^2$

Area of Rectangle B

$Area = x * 2x$

$Area = 2x^2$

Area of Big Rectangle

The largest rectangle is formed by merging the two rectangles together;

The dimension are 3x by 2x

The Area is as follows

$Area = 2x * 3x$

$Area = 6x^2$

The fraction of rectangle A in relation to the largest rectangle is calculated by dividing area of rectangle A by area of the largest rectangle;

$Fraction = \frac{Rectangle\ A}{Biggest}$

$Fraction =\frac{4x^2}{6x^2}$

Simplify

$Fraction =\frac{2x^2 * 2}{2x^2 * 3}$

$Fraction =\frac{2}{3}$

7 0

3 years ago

HELPP! ASAP PLS!! Find the surface area of the composite solid. Leave your answer in exact terms.

Andreyy89

Answer:

Step-by-step explanation:

First find the surface area of the clyinder and find the area circles and subtract

Then find the surface area of a cone, remove the circle area and double it.

Clyinder surface area (without circle area) 2πrh+2πr2=2·π·4·6+2·π·42≈251.32741

251.32741 - 50.2 - 50.2

Cone area: A=πr(r+h2+r2)=π·4·(4+32+42)≈113.09734

113.09734 - 50.2 - 50.2

Total: 12.69734 + 150.92741 = 163.62475

3 0

2 years ago

Its not that easy!!!!!!!!!!!11

AVprozaik [17]

Answer:

Step-by-step explanation:

(3.6xy^5)(2.5x^2y^-2)

9x^3y^3

8 0

3 years ago

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Find the new amount given the original amount and the percent of change. $5; 40% increase The new amount is $

bekas [8.4K]

Answer:

Step-by-step explanation:

5$ -40%=3

7 0

3 years ago

Read 2 more answers

Wqolsak,fdsf nlkdsflksfksdjfkdsfjslkdafj

jarptica [38.1K]

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3 years ago

Add the complex numbers: ​ ​(-3+4i)+(7-i)

Add the complex numbers: (-3+4i)+(7-i)