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ehidna [41]
3 years ago
10

Solve for C

Mathematics
1 answer:
valina [46]3 years ago
5 0

Answer:

c=d/a-b

Step-by-step explanation:

a(c+b)=d

c+b=d/a

c=d/a-b

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Mrs Lola's class is selling frozen pizzas to earn money for a field trip. For every pizza sold the class makes $5;35 they alread
klemol [59]
I'm not sure what to do for the "arithmetic approach" but for the algebraic approach:

The equation you need to solve would be 5.35x + 182.90 = 750

when you solve it, you would get x = 106, meaning they would have to sell 106 more
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The two lines represented by the equations below are graphed on a coordinate plane. Which statement best describes
QveST [7]

Answer:

4

Step-by-step explanation:

2x+y=12

y=-2x+12

y-2=3(x-2)

If it’s parallel to each other: the slope has to be the same.

If is perpendicular to each other: the slope should be the reciprocal to each other.

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The second has a slope of 3

Neither the condition meet. So the answer is 4

8 0
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Abby donated 20% of her babysitting income to her favorite charity.  If she made $45 in October and $85 in November, how much di
soldier1979 [14.2K]

Answer:

the answer is 26 dollars

6 0
3 years ago
- Бу - 10x = 45<br>-Зу + 10x = -5<br>x=<br>y=​
katovenus [111]

Answer:

X= -11/6. Y=-40/9

Step-by-step explanation:

3 0
3 years ago
The mean number of words per minute (WPM) typed by a speed typist is 149149 with a standard deviation of 1414 WPM. What is the p
Semmy [17]

Answer:

The probability is  P(\=  X  >  x ) = 0.78814

Step-by-step explanation:

From the question we are given that

     The population  mean is  \mu  =  149

     The standard deviation is  \sigma  =  14

     The random number    x  =  147.81

      The sample  size is  n  = 88

The probability that  the sample mean would be greater than P(\=  X  >  x ) =  P( \frac{ \= x   -  \mu   }{\sigma_{\= x} }  > \frac{ x - \mu  }{\sigma_{\= x} }  )

Generally the z- score of this normal distribution is mathematically represented as

       Z  =  \frac{ \=  x   -  \mu  }{\sigma_{\= x} }

Now

        \sigma_{\= x } =  \frac{\sigma }{\sqrt{n} }

substituting values

         \sigma_{\= x } =  \frac{14 }{\sqrt{88} }

         \sigma_{\= x } =  1.492

Which implies that

         P(\=  X  >  x ) =  P( Z  > \frac{ 147.81  - 149   }{ 1.492}  )

        P(\=  X  >  x ) =  P( Z  > -0.80  )

Now from the z-table  the  probability is  found to be

        P(\=  X  >  x ) = 0.78814

5 0
3 years ago
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