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Fittoniya [83]
3 years ago
11

One pound of grapes costs $2. at this rate how many dollars will c pounds of grapes cost

Mathematics
1 answer:
ella [17]3 years ago
5 0
C pounds of grapes would cost $2c.

Hope this helps! 
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Giving thanks and brainliest for answer to question <3
riadik2000 [5.3K]

Answer:

A

Step-by-step explanation:

3 0
2 years ago
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Solve the system of linear equations using substitution <br>2y=2x+12<br>y=-2-3​
velikii [3]

Answer:

x=-11, y=-5. (-11, -5).

Step-by-step explanation:

2y=2x+12

y=-2-3

-----------------

simplify 2y=2x+12 into y=x+6

y=-5

------------------

-5=x+6

x=-5-6=-11

6 0
3 years ago
A 95% confidence interval for a population mean is computed from a sample of size 400. Another 95% confidence interval will be c
Anna [14]

Answer:

The interval from the sample of size 400 will be approximately <u>One -half as wide</u> as the interval from the sample of size 100

Step-by-step explanation:

From the question we are told the confidence level is  95% , hence the level of significance is    

      \alpha = (100 - 95 ) \%

=>   \alpha = 0.05

Generally from the normal distribution table the critical value  of  \frac{\alpha }{2} is  

   Z_{\frac{\alpha }{2} } =  1.96

Generally the 95% confidence interval is dependent on the value of the margin of error at a constant sample mean or sample proportion

Generally the margin of error is mathematically represented as

      E = Z_{\frac{\alpha }{2} } * \frac{\sigma}{\sqrt{n} }    

Here assume that Z_{\frac{\alpha }{2} } \ and \  \sigma \ is constant so

     E =  \frac{k}{\sqrt{n} }

=>  E \sqrt{n} = K

=>   E_1 \sqrt{n}_1 =  E_2 \sqrt{n}_2

So  let  n_1 = 400 and n_2 =  100

=>   E_1 \sqrt{400} =  E_2 \sqrt{100}

=>  E_1 =  \frac{\sqrt{100} }{\sqrt{400} } E_2

=>  E_1 =  \frac{1}{2 } E_2

So From this we see that  the confidence interval for a sample size of 400 will be half that with a sample size of 100

   

     

   

7 0
2 years ago
What is 1/8 times 3/4
Serga [27]
Hi there

1/8 * 3/4

Remember: When you are multiply two fractions together all you have to do is multiply the numerator by the denominator.

Answer : 3/32

I hope that's help !
4 0
3 years ago
The coefficient of x is
elena-s [515]

Answer:

coefficient is a number in front of a variable. For example, in the expression x 2-10x+25, the coefficient of the x 2 is 1 and the coefficient of the x is -10. The third term, 25, is called a constant.

3 0
2 years ago
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