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Natali5045456 [20]

3 years ago

7

yvette earned $66.00 for 8 hours of work. lizbeth earned $68.80 working the same amount of time. how much more per hour did lizb

eth earn than yvette

2 answers:

sergeinik [125]3 years ago

8 0

The answer is lizeth earns 0.35 cents more per hour. beacuse 66 divided by 8 =8.25 then 68.80 divided by 8 is 8.60 then if you subtract 8.60-8.25 it equals 0.35

djyliett [7]3 years ago

5 0

Answer:

$0.35 much more per hour lizbeth earn than yvette .

Step-by-step explanation:

As given

yvette earned $66.00 for 8 hours of work.

$yvette\ earns\ per\ hour = \frac{Total\ amount}{Total\ number\ of\ hours}$

$yvette\ earns\ per\ hour = \frac{66}{8}$

= $ 8.25

lizbeth earned $68.80 working the same amount of time.

$lizbeth\ earns\ per\ hour = \frac{Total\ amount}{Total\ number\ of\ hours}$

$lizbeth\ earns\ per\ hour = \frac{68.80}{8}$

= $ 8.6

lizbeth earn more than yvette per hour = Lizbeth earning per hour - yvette earning per hour .

= $8.6 - $ 8.25

= $ 0.35

Therefore $0.35 much more per hour lizbeth earn than yvette .

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8 0

3 years ago

The sum of two numbers is 9.9, and the sum of the squares of the numbers is 53.21. What are the numbers?

Snezhnost [94]

Answer:

There are two possibilities:

$x_{1} = 3.5$ and $y_{1} = 6.4$

$x_{2} = 6.4$ and $y_{2} = 3.5$

Step-by-step explanation:

Mathematically speaking, the statement is equivalent to this 2-variable non-linear system:

$x + y = 9.9$

$x^{2} + y^{2} = 53.21$

First, $x$ is cleared in the first equation:

$x = 9.9 - y$

Now, the variable is substituted in the second one:

$(9.9-y)^{2} + y^{2} = 53.21$

And some algebra is done in order to simplify the expression:

$98.01-19.8\cdot y +2\cdot y^{2} = 53.21$

$2\cdot y^{2} -19.8\cdot y +44.8 = 0$

Roots are found by means of the General Equation for Second-Order Polynomials:

$y_{1} \approx \frac{32}{5}$ and $y_{2} \approx \frac{7}{2}$

There are two different values for $x$ :

$y = y_{1}$

$x_{1} = 9.9-6.4$

$x_{1} = 3.5$

$y = y_{2}$

$x_{2} = 9.9 - 3.5$

$x_{2} = 6.4$

There are two possibilities:

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3 years ago

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timurjin [86]

Answer:

42???

Step-by-step explanation:

sorry if wrong

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3 years ago

Read 2 more answers

What is 4.583.269 rounded to the nearest hundredth

Ede4ka [16]

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3 years ago

How do I get this answer and what is it

Sedaia [141]

The degree is 5, so the largest exponent of the polynomial is 5. This means the answer is either A or B. Choice C is ruled out because the degree here is 7. Choice D is ruled out because the degree here is 6

For choice A, the leading coefficient is 6. This is the number to the left of the variable term of the largest exponent. So we can rule out choice A (because the leading coefficient should be 7)

Choice B is the answer. It has a degree of 5 and a leading coefficient of 7 and also a constant term of 6. The constant term is simply the term without any variables attached to it.

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3 years ago