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2 years ago

Module six review and discussion-based assessment

Mathematics

2 answers:

netineya [11]2 years ago

7 0

Answer:

okay what's your question?

Step-by-step explanation:

Oksana_A [137]2 years ago

6 0

Uhhh ok what is that

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Marty made a $220 bank deposit using $10 bills and $5 bills. She gave the teller a total of 38 bills, how many $5 bills were in

Luda [366]

ANSWER: 32 five-dollar bills

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EXPLANATION:

Let x be number of $5 bills

Let y be number of $10 bills

Since we have total of 38 bills, we must have the sum of x and y be 38

x + y = 38 (I)

Since the total amount deposited is $220, we must have the sum of 5x and 10y be 220 (x and y are just the "number of" their respective bills, so we multiply them by their value to get the total value):

5x + 10y = 220 (II)

System of equations:

$\left\{ \begin{aligned} x + y &= 38 && \text{(I)} \\ 5x + 10y &= 220 && \text{(II)} \end{aligned} \right.$

Divide both sides of equation (II) by 5 so our numbers become smaller

$\left\{ \begin{aligned} x + y &= 38 && \text{(I)} \\ x + 2y &= 44 && \text{(II)} \end{aligned} \right.$

Rearrange (I) to solve for y so that we can substitute into (II)

$\begin{aligned} x + y &= 38 && \text{(I)} \\ y &= 38 - x \end{aligned}$

Substituting this into equation (II) for the y:

$\begin{aligned} x + 2y &= 44 && \text{(II)} \\ x + 2(38 - x) &= 44\\ x + 76 - 2x &= 44 \\ -x &= -32 \\ x &= 32 \end{aligned}$

We have 32 five-dollar bills

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If we want to finish off the question, use y = 38 - x to figure out number of $10 bills

$y = 38 - 32 = 6$

32 five-dollar bills and 6 ten-dollar bills

7 0

3 years ago

What is the equation of a parabola whose vertex is at the origin and whose directrix is y = 3?

frutty [35]

Y^2=4*3*X=12X Hope this helps!

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2 years ago

Help!!! What is the slop of the line??

sergiy2304 [10]

I believe it is negative 2/2, hope this helps you out.

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2 years ago

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How can I change .564 to a percent

nalin [4]

move the decimal point two places to the right and the answer would be 56.4%

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2 years ago

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Your patient weighs 15 kg and is scheduled for to have an abdominal exploratory. You are instructed to provide 0.9% sodium chlor

kumpel [21]

Answer:

$V_f=450ml/hr$

Step-by-step explanation:

From the question we are told that:

Mass $m=15kg$

Amount of NaCl IV $n=0.9\%$

Rate $R=30ml/kg/hr$

Generally the equation for fluid rate be for your IV pump is mathematically given by

$V_f=mR$

Since

Rate is

30ml/kg/hr at 1kg patient Weight

Therefore

$V_f=15*30$

$V_f=450ml/hr$

6 0

2 years ago

Module six review and discussion-based assessment​

Module six review and discussion-based assessment