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Bad White [126]
2 years ago
9

What is 65% more of 140

Mathematics
1 answer:
raketka [301]2 years ago
4 0

65% more than 140 is  231

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3 is in the hundred millions
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Number 1 and 2 please (25 points)
Elenna [48]

Answers:

1) (3x+2)+(4-5x)=-2x+6

(3+2i)+(4-5i)=7-3i

2) (1-3x)(2+x)=-3x^{2}-5x+2

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

Step-by-step explanation:

In mathematics there are rules related to complex numbers, specifically in the case of addition and multiplication:

<u>Addition: </u>

If we have two complex numbers written in their binomial form, the sum of both will be a complex number whose real part is the sum of the real parts and whose imaginary part is the sum of the imaginary parts (similarly as the sum of two binomials).

For example,  the addition of these two binomials is:

(3x+2)+(4-5x)=3x-5x+2+4=-2x+6

Similarly, the addition of two complex numbers is:

(3+2i)+(4-5i)=3+4+2i-5i=7-3i Here the complex part is the number with the i

<u>Multiplication: </u>

If we have two complex numbers written in their binomial form, the multiplication of both will be the same as the multiplication (product) of two binomials, taking into account that i^{2}=-1.

For example,  the multiplication of these two binomials is:

(1-3x)(2+x)=2+x-6x-3x^{2}=-3x^{2}-5x+2

Similarly, the multiplication of two complex numbers is:

(1-3i)+(2+i)=2+i-6i-3i^{2}=2-5i-3(-1)=5-5i

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4 years ago
If the area of the triangle is 10cm^2, what is the missing height?
Inga [223]

Answer:

h= 4

Step-by-step explanation:

A= 1/2(b)(h)

10= 1/2(5)(h)

10= 2.5h

/2.5 /2.5

h= 4

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Answer:

64 m³

Step-by-step explanation:

<u>Formula</u>

\textsf{Volume of a square based pyramid}=\dfrac{1}{3}a^2h

where:

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  • h = perpendicular height

Given:

  • a = 8 m
  • h = 3 m

Substituting the given values into the formula:

\begin{aligned}\implies \textsf{Volume}& =\dfrac{1}{3} \cdot 8^2 \cdot 3\\\\& = \dfrac{3}{3} \cdot 64\\\\& = 1 \cdot 64\\\\& = 64\:\sf m^3\end{aligned}

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elixir [45]

Answer:

17

Step-by-step explanation:

To find the answer, as the problem says, divide the given (34) by two. (34/2=17)

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