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leva [86]
3 years ago
11

A box of cookies cost $2 before tax. Find the after-tax cost if the sales tax was 8.5%.

Mathematics
1 answer:
adell [148]3 years ago
7 0

Answer:

$2.17 total

Step-by-step explanation:

2 (0.85) = v2.17

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Solve 7/4x + 5/6=4/3x - 3 for x
juin [17]

Answer:

x=-46/5

Step-by-step explanation:

1. subtract either 5/6 or add 3 for each side.

2. combine terms

3. x=-46/5

8 0
3 years ago
5) A cab driver uses 36 gallons of gas in driving 529.2 miles. Find the
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Answer:

14.7 miles per gallon

Step-by-step explanation:

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4 years ago
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A set X consists of all real numbers greater than or equal to 1. Use set-builder notation to define X.
vitfil [10]

Theory:

The standard form of set-builder notation is <span>
 
{ x | “x satisfies a condition” } </span>

This set-builder notation can be read as “the set of all x such that x (satisfies the condition)”.

For example, { x | x > 0 }  is equivalent to “the set of all x such that x is greater than 0”.

 

Solution:

In the problem, there are 2 conditions that must be satisfied:

<span>1st: x must be a real number</span>

In the notation, this is written as “x ε R”. Where ε means that x is “a member of” and R means “Real number”

 

<span>2nd: x is greater than or equal to 1</span>

This is written as “x ≥ 1”

 

Answer:

Combining the 2 conditions into the set-builder notation:

<span>X = { x | x ε R and x ≥ 1 } </span>
8 0
3 years ago
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Write square root of 64 - square root of -289 as a complex number in the form of a+bi
stellarik [79]

Answer:

\sqrt{64}-\sqrt{-289}

=8-17i

Step-by-step explanation:

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\sqrt{64}-\sqrt{-289}

8-17i

8 0
4 years ago
David has a part-time job. He earns $9.40 per hour. How much will he earn when he works 9 hours?
Oksana_A [137]

Answer:

$84.60

Step-by-step explanation:

$84.60 is what david will earn in 9 hours becuz 9.40 times 9 is 84 dollars and 60 cents

7 0
3 years ago
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