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2 years ago

13

Alexis bought 2 bags of apples for the fruit salad for her party. Each bag contained 13 apples. If she cuts each apple into 8 pi

eces, how many apple pieces would she have?

1 answer:

Lerok [7]2 years ago

4 0

Answer:

13*8=104

104*2=

<em>208</em>

Step-by-step explanation:

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At Micaela's Printing Company LLC there are two kinds of penting presses: Model A which can print 60 books per day and Model B w

devlian [24]

A+B=15 —>A+15=B(plug this into the other equation)
60a+30b=600
60a+30(a+15)=600
60a+30a+150=600
90a+150=600
90a=450
A=5 (plug back in to first equation)
A+B=15
5+B=15
B=10

They have 5 of the Model A and 10 of model B.

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2 years ago

Leonard and Marcus have saved up a total of $47.00. Leonard has saved 3 dollars less than 3/5 as much as Marcus. How much has Ma

shtirl [24]

Answer:

marcus saved 31.25

Step-by-step explanation:

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2 years ago

For the following system, if you isolated x in the first equation to use the Substitution Method, what expression would you subs

tatiyna

$-x-2y=-4 \\ 3x+y=12 \\ \\ \hbox{the first equation:} \\ -x-2y=-4 \ \ \ \ \ \ |+2y \\ -x=2y-4 \ \ \ \ \ \ \ \ |\times (-1) \\ x=-2y+4$

The expression you would substitute for x is -2y+4. The answer is d.

4 0

3 years ago

What is the solution of the following system?

erica [24]

Answer:

The answer to your question is: both lines are the same.

Step-by-step explanation:

3x + 3y = 10

-9x -9y = -30

Elimination method

9x + 9x = 30

-9x - 9y = -30

0 0 0

8 0

3 years ago

Scores from an exam are normally distributed with a mean of 85 and a standard deviation of 5. Suppose 188 students take the exam

charle [14.2K]

The mean is $\mu=85$ and standard deviation is $\sigma=5$ . Then the variable $X\sim N(85,5)$ .

Use substitution $Z=\dfrac{X-\mu}{\sigma}=\dfrac{X-85}{5}$ , then the variable $Z\sim N(0,1)$ .

The probability $Pr(X>80)$ can be calculated in the following way:

for X=80, $Z=\dfrac{80-85}{5} =-1$ and $Pr(X>80)=Pr(Z>-1)$ . From the diagram $Pr(Z>-1)=0.34+0.34+0.135+0.025=0.84$ .

Conclusion: if 188 students take the exam, then 188·0.84=157.92 (157) would receive a score above 80

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3 years ago

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