3 years ago

How would you change 18/7 into a mix number?

1 answer:

6 0

How many times does 18 go into 7? The answer is 2 times since 14/7 = 2 and we'll have 4 left over. We can say that 18/7 = 2 remainder 4. The remainder of 4 is placed over the denominator 7 to indicate we a fractional part.

Therefore, 18/7 = 2 & 4/7

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-0.04less than or greater than -0.050

katrin [286]

-0.04 less than <span>-0.050</span>

6 0

4 years ago

Ben earns $9 per hour and $6 for each delivery he makes. He wants to earn more than $155 in an 8-hour workday. What is the least

hichkok12 [17]

Answer:

He will need 14 deliveries to reach his goal.

Step-by-step explanation:

$9/hr x 8hrs = $72.00

$155 - $72 = $83

$83/$6 = 13.83, but he cant make less than a whole delevery, so he would have to make 14 delivers to reach his goal.

6 0

3 years ago

Read 2 more answers

(csc x - 1) (csc x + 1)

victus00 [196]

<h2>Explanation:</h2>

Here we have the following expression:

$(csc x - 1) (csc x + 1)$

So we need to extend this. Remember that the difference of squares tells us:

$(a-b)(a+b)=a^2-b^2$

So here:

$a=cscx \\ \\ b=1$

Thus:

$(csc x - 1) (csc x + 1)=csc^2x-1 \\ \\ \\ But: \\ \\ cscx=\frac{1}{sinx} \\ \\ \\ Then: \\ \\ csc^2x-1=\frac{1}{sin^2x}-1=\frac{1-sin^2x}{sin^2x}=\frac{cos^2x}{sin^2x}=cot^2x \\ \\ \\ Finally: \\ \\ \boxed{(csc x - 1) (csc x + 1)=cot^2x}$