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Irina18 [472]
3 years ago
13

If f(x) = c^2-2x and g(x) = 6x+4 , for which value of x

Mathematics
1 answer:
sp2606 [1]3 years ago
4 0

hi        Step-by-step explanation:

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16+(c+17)=(16+c)+17 ....what property is this?
Pavel [41]

It's is the Associative Property. I hope that helps!
4 0
3 years ago
Read 2 more answers
Wayne bought a soccer season ticket package for $72.48 and pays $6.00 for each game he attends. Logan did not buy a season ticke
krek1111 [17]

Answer: 6 games.

Step-by-step explanation:

If you multiply 6 by 18.08, you will get 108.48.

If you multiply 6 by 6 (Wayne's payment) plus what Wayne bought for the soccer season ticket, it will all add up  to 108.48.

7 0
3 years ago
A researcher posed a null hypothesis that there was no significant difference between boys and girls on a standard memory test.
kompoz [17]

Complete Question

A researcher posed a null hypothesis that there was no significant difference between boys and girls on a standard memory test. He randomly sampled 40 girls and 40 boys in a community and gave them the standard memory test. The mean score for girls was 68 and the standard deviation of mean was 5.0. The mean score for boys was 66 and the standard deviation of mean was 5.0. What is the p-value and your conclusion at alpha 0.05

Answer:

The p-value is  p-value =0.073614

 The conclusion is  

There is sufficient evidence to support the claim  that there was no significant difference between boys and girls on a standard memory test

Step-by-step explanation:

From the question we are told that

      The sample size of boys and girls is  n_1= n_2 = n  = 40

      The standard deviation is  s_1=   s_2 = s = 5

        The level of significance is  \alpha = 0.05

       The sample mean for boys is  \= x_1 =66  

The null hypothesis is  H_o :  \mu_1 = \mu_2

The alternative hypothesis is  H_a :  \mu_1 <  \mu_2

 Generally the test statistics is mathematically represented as

           z = \frac{\= x_1 - \= x_2 }{ \sqrt{\frac{s_1 ^2 }{n_1}  + \frac{s_2 ^2 }{n_1}  } }

=>       z = \frac{66 -68 }{ \sqrt{\frac{5^2 }{40}  + \frac{5 ^2 }{40}  } }

=>       z = -1.789

From the z table  the area under the normal curve to the left corresponding to    -1,789   is

          P(Z <  -.1789 ) = 0.036807

Generally the p-value is mathematically represented as

         p-value =  2 P(Z <  -.1789 )

=>      p-value = 2 * 0.036807

=>      p-value =0.073614

From the values obtained we see that  p-value <  \alpha hence

The decision rule is  

Fail to reject the null hypothesis

 The conclusion is  

There is sufficient evidence to support the claim  that there was no significant difference between boys and girls on a standard memory test

 

3 0
3 years ago
CAN you help me on this!!!!pls
Elanso [62]
GRETA :

75 + (45 x 1) = 120

$120

RICHARD :

You read it of the graph and it’s at $80

STEVE :

165 / 3 = 55

$55

Reasoning :

Greta earns the most money per hour as she earns $120 whereas everyone else earns under $100.
5 0
3 years ago
Read 2 more answers
Write an inequality for the graph.
shusha [124]

Answer:

D

Step-by-step explanation:

The boundary line for the inequality is translated 5 units to the right and 5 units up graph of the function y=|x|. This translation gives you the function y=|x-5|+5.

This boundary line is solid, then the inequality should  contain notion "or equal to" (the sign of inequality should be ≤ or ≥).

You can see that the origin belongs to the sgaded region, then its coordinates satisfy the inequality. Since 0≤|0-5|+5  (0≤10), then correct choice is D.

7 0
3 years ago
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