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3 years ago

Graph {x | x > 4} {x | x < -2} on a number line

Mathematics

1 answer:

WARRIOR [948]3 years ago

7 0

Answer:

Step-by-step explanation:

well,

you mark an arrow to the left side of # line with open circle on -2

then,

you mark an arrow to the right side of # line with open circle on 4

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Simplify the expression x6 • x4

Igoryamba

Answer:

24x^2

Step-by-step explanation:

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3 years ago

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In a race in which twelve automobiles are entered and there are no ties, in how many ways can the first three finishers come i

k0ka [10]

That is 3 slots
12 in 1st slot
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10 in 3rd

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2 years ago

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Ab over 2 equal 2a minus 1,express a in terms of b

sasho [114]

$\frac{ab}{2}$ = 2a - 1

2( $\frac{ab}{2}$ ) = 2(2a - 1) multiplied both sides by 2

ab = 4a - 2 distributed the 2 on the right side

ab - 4a = -2 subtracted 4a from both sides

a(b - 4) = -2 factored out "a" from the left side

a = $\frac{-2}{b - 4}$ divided (b - 4) on both sides

Answer: a = $\frac{-2}{b - 4}$

6 0

2 years ago

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:

Addition:

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 $i$

Multiplication:

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 $i^{2}=-1$ .