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3 years ago

Multiply -3i and it’s conjugate. Simplify.

Mathematics

1 answer:

Alex_Xolod [135]3 years ago

5 0

Answer:

-3 + 9i

Step-by-step explanation:

The conjugate of -3i is - 3 - i.

(- 3 i) × (- 3 - i)

Multiply both terms.

-3 + 9i

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Mr. Wells tells his class of 24 that when

abruzzese [7]

Answer:

About 10 people

Step-by-step explanation:

40% is 0.4. 24 × 0.4 = 9.6 which is approximately 10.

3 0

2 years ago

Which figure is made with all triangular faces?

Anna35 [415]

The anser is c. Triangular pyramids!

Triagular pyramids or tetrahedrons, are composed of only triangular shaped sides.

Hope this helps, if not, comment below please!!!

3 0

2 years ago

The hypotenuse of a right triangle measures 16 cm and one of its legs measures 9 cm. Find the measure of the other leg. If neces

Vesnalui [34]

$\sf\huge\underline{\star Solution:-}$

<h3><u>Given that</u>:</h3>

Hypotenuse of a right triangle = $\sf\blue{16cm.}$
One side (leg) = $\sf\blue{9cm.}$

Measure of another side(leg).

<h3><u>Solution</u>:-</h3>

$\rightarrow$ As we know that,

$\sf{A^2 +B^2 \:=\: C^2}$ (Pythagoras Theorem)

So, using this formula we can find measure of another side(leg).

$\rightarrow$ $\sf{A^2 +B^2 \:=\: C^2}$ (putting the value of both given side of triangle)

Here I am putting the value of hypotenuse in C because it is the longest side of triangle.

$\rightarrow$ $\sf{9^2 +B^2 \:=\: 16^2}$

$\rightarrow$ $\sf{81 +B^2 \:=\: 256}$

$\rightarrow$ $\sf{B^2 \:=\: 256-81}$

$\rightarrow$ $\sf{B^2 \:=\: 175}$

$\rightarrow$ $\sf{B \:=\: \sqrt{175}}$

$\rightarrow$ $\sf{B\:=\: 13.22(approx)}$

Therefore, measure of another side (leg) of the triangle = $\sf\purple{ 13.22(approx).}$

____________________________________

Hope it helps you:)

6 0

2 years ago

after buying a burger thet cost $5 roy had no more then $23 in his pocket how much money did roy have before buying the burger

viktelen [127]

He has 28 dollars now

3 0

3 years ago

The area of a rectangle A = I x w represented by the expression 24x^6y^15 which could be the dimensions of the rectangle

denis23 [38]

Area of rectangle is given by:
Area=length×width
given that the area of our rectangle is 24x^6y^15. To get the possible dimensions, we shall factorize the area of our rectangle:
(24x^6y^15)
=(6x^6) by (4y^15)
or
=(8x^6) by (3y^15)
or
=(12x^3x^5) by (2x^3y^10)

3 0

3 years ago

Read 2 more answers