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3 years ago

13

Derek estimated the cost of his grocery bill to be $75, but it actually cost $110. Find the percent error rounded to the nearest

whole percent.

1 answer:

zhannawk [14.2K]3 years ago

5 0

The absolute change in price was $12−$8=$4. Relative to the original price, it was 412, which is 0.3333 or 33.33%.

The answer was 1,150.0 but as a whole number its 1,150.

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Noah scored n points in a basketball game.

zlopas [31]

Answer:

1) Noah scored more than 15 points

2) Noah scored less than 25 points

3) 20

4) 36

Step-by-step explanation:

sorry if it is wrong

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2 years ago

9 friends are sharing 12 pounds of peacans equally. how many pounds of peacans does each friend get?

lys-0071 [83]

1 pound evenly. ignore the remainder.

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3 years ago

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:

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

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

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

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3 years ago

Studies showed that a driver with a blood alcohol level of 0.15% has_____ times greater chance of causing an accident.

Debora [2.8K]

Answer:

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Step-by-step explanation:

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2 years ago

This is hard i need help

taurus [48]

Answer:

a. 6 b. -2

Step-by-step explanation:

a. x^3 = 216

x = ³√216

x = 6

b. -n^3/4 = 2

-n^3 = 8

-n = ³√8

- n = 2

n = -2

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2 years ago

Read 2 more answers