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GalinKa [24]
2 years ago
13

To indirectly measure the distance across a river, Carson stands on one side of the

Mathematics
1 answer:
galina1969 [7]2 years ago
7 0

Answer:

30

Step-by-step explanation:

I just did this at school lol

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Shelby loves to knit scarves. Normally, it takes her 15 minutes to knit 5 inches of a scarf. She plans to make a scarf that is 3
MariettaO [177]

Answer:

90 minutes

Step-by-step explanation:

let x=amount of time it would take for Shelby to knit the scarf

\frac{15}{5} =\frac{x}{30}

cross multiply

15*30=5x

450=5x

450/5=x

x=90

It would take Shelby 90 minutes to knit a scarf that is 30 inches long.

7 0
3 years ago
2x^2+5x-3<br> Show steps
lbvjy [14]
2x^2+(6-1)x-3
2x^2+6x-x-3
2x(x+3)-1(x+3)
(2x-1)(x-1)
7 0
4 years ago
A shoe manufacturer was investigating the weights of men's soccer cleats. He felt that the weight of these cleats was less than
aleksklad [387]

Answer:

 The conclusion is that the researcher was correct

Step-by-step explanation:

From the question we are told that

     The sample size is  n =  13

    The sample mean is  \= x =  9.63

     The standard deviation is  s =  0.585

      The significance level is  \alpha  =  0.05

The Null Hypothesis is  H_o :  \mu = 0

The Alternative  Hypothesis  is  H_a =  \mu < 10

The test statistic is  mathematically represented as

          t =  \frac{\= x - \mu }{\frac{s}{\sqrt{n} } }

Substituting values

          t =  \frac{9.63  - 10 }{\frac{0.585}{\sqrt{13} } }

         t =  -  2.280

Now the critical value for \alpha is  

     t_{\alpha } = 1.645

This obtained from the critical value table

  So comparing the critical value of alpha and the test value we see that the test value is less than the critical value so the Null Hypothesis is rejected

 The conclusion is that the researcher was correct

 

 

6 0
4 years ago
A brownie recipe requires two and two thirds cups of sugar to one cup of chocolate chips. If one and two thirds cups of sugar is
geniusboy [140]
5/8 cups chocolate, see photo for solution’s steps

3 0
3 years ago
C - 1.5+6.8=0.6 what is x
quester [9]
Assuming you meant what is c, c is equal to 8.9
4 0
3 years ago
Read 2 more answers
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