2 years ago

? Help

Mathematics

2 answers:

svlad2 [7]2 years ago

7 0

Answer:

Step-by-step explanation:

melomori [17]2 years ago

5 0

Answer:

Step-by-step explanation:

it is just right my brudda

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Simplify each of the following:<br> 2<br> 1. (3+4i ) + ( 19 - 5i)

ira [324]

I hope this helps you

(3+19)+(4i-5i)

22-i

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3 years ago

Find values of a and b that make the statement |a+b|= |a|+|b| false.

jok3333 [9.3K]

The values that make this statement falser are any in which a and b do not have the same sign.

For instance, if a was equal to 3 and b was equal to -3 than see the results.

|a+b|=

|3+-3|=

|0|= 0

Then see the next equation with the same selections

|a|+|b|

|3|+|-3|

3 + 3 = 6

And this would be true no matter which is the negative, as long as there is one negative and one positive.

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3 years ago

What is the rule for the following geometric sequence? 64,128,256,512...

professor190 [17]

Answer:

Step-by-step explanation:

The explicit rule for a geometric sequence is

$a_{n}$ = a₁ $(r)^{n-1}$

where a₁ is the first term and r the common ratio

Here a₁ = 64 and r = $\frac{a_{2} }{a_{1} }$ = $\frac{128}{64}$ = 2 , then

$a_{n}$ = 64 $(2)^{n-1}$ → B

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2 years ago

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Value of 3x^2 +4y^2 if x=2, y=1, and z= -3

Dennis_Churaev [7]

$3x^2+4y^2\\\\\text{Put the values of x=2, y=1 and z=-3 to the expression:}\\\\3(2^2)+4(1^2)=3(4)+4(1)=12+4=16$

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3 years ago

Smith has a garden with 40 carrots in it. They pick some carrots to feed their pet rabbit, leaving 90% of the carrots in the gar

adelina 88 [10]

Answer:the answer is 44

Step-by-step explanation: cuz 40 divided by 90%= 44

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2 years ago

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