2 years ago

Which number line shows the solution to −4 − (−1)?

Mathematics

1 answer:

Alenkasestr [34]2 years ago

3 0

Answer:

B a number line is shown from negative 5 to 0 to positive 5.

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If x=(10-3i) and y=(3-10i), then xy=? and x/y=?

Solnce55 [7]

Answer:

$xy=-109i$

$\frac{x}{y}=\frac{60}{109}+\frac{91}{109}i$

Step-by-step explanation:

$xy=(10-3i)(3-10i)$

To compute x times y must use foil on the right hand side.

First: $10(3)=30$

Outer: $10(-10i)=-100i$

Inner: $-3i(3)=-9i$

Last: $-3i(-10i)=30i^2=-30$

------------------------------------Add like terms:

$-109i$

----------------

$\frac{x}{y}$

$\frac{10-3i}{3-10i}$

Multiply top and bottom by bottom's conjugate:

$\frac{(10-3i)(3+10i)}{(3-10i)(3+10i)}$

Foil the top and just do first and last of Foil for the bottom since the bottom contains multiplying conjugates:

$\frac{30+100i-9i-30i^2}{9-100i^2}$

Replace $i^2$ with -1:

$\frac{30+91i+30}{9+100}$

$\frac{60+91i}{109}$

$\frac{60}{109}+\frac{91}{109}i$

7 0

3 years ago

HELP ME PLZZZ!!! I'VE BEEN TRYING TO GET THE AWNSER ON HERE FOR HOURS SO I SPENT OVER 1000 POINTS TRYING TO GET THIS AWNSER!

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It would be A. 0.65
0.5x0.5+1,2(0.5+0.5+0.5+0.5)x0.4

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2 years ago

The volume of 10 drops of liquid is 0.1 fluid ounces.<br> What is the volume of 10,000 drops

Elena-2011 [213]

Answer:

10,000 drops would be 1 fluid ounce

Step-by-step explanation:

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2 years ago

The booster club is selling boxes of chocolates. Each box sells for $8.25 and costs $2.75 to make. Fifteen percent of the profit

Alla [95]

Answer:

Step-by-step explanation:

8.25-2.75= 5.50 is profit.

5.50*15%=0.85

0.85*300 boxes= $255.00 the booster club will receive.

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3 years ago

Mean, medium, & mode of 17, 6, 20, 11, 13, 20, 18

kodGreya [7K]

Step-by-step explanation:

medium -11

I don't know about mean & mode

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3 years ago