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Lena [83]
3 years ago
13

Need some help with model contexts with two variable expressions

Mathematics
1 answer:
malfutka [58]3 years ago
5 0
Answer is
=1720 pounds
30s, 70 L

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A video game store has a 20% sale on all video games. If the game you wanted cost $32.00, what would the discount be?
Charra [1.4K]

Answer:

$6.4

Step-by-step explanation:

You just do 32 × .2 to give you the discount of 6.4

You multiple by .2 because 20% as a decimal is .2 ( you do 20% divided by 100 to give you .2)

7 0
3 years ago
Read 2 more answers
A university administrator was interested in determining if there was a difference in the distance students travel to get from c
eduard

Answer:

1) Fail to reject the Null hypothesis

2) We do not have sufficient evidence to support the claim that the mean distance students traveled to school from their current residence was different for males and females.

Step-by-step explanation:

A university administrator wants to test if there is a difference between the distance men and women travel to class from their current residence. So, the hypothesis would be:

H_{o}: \mu_{F}-\mu_{M}=0\\\\ H_{a}: \mu_{F}-\mu_{M}\neq 0

The results of his tests are:

t-value = -1.05

p-value = 0.305

Degrees of freedom = df = 21

Based on this data we need to draw a conclusion about test. The significance level is not given, but the normally used levels of significance are 0.001, 0.005, 0.01 and 0.05

The rule of the thumb is:

  • If p-value is equal to or less than the significance level, then we reject the null hypothesis
  • If p-value is greater than the significance level, we fail to reject the null hypothesis.

No matter which significance level is used from the above mentioned significance levels, p-value will always be larger than it. Therefore, we fail to reject the null hypothesis.

Conclusion:

We do not have sufficient evidence to support the claim that the mean distance students traveled to school from their current residence was different for males and females.

7 0
4 years ago
What is the value of the expression 2/4^-3?
Kisachek [45]
\frac{2}{4^-3} \\ \\  \frac{2}{ \frac{1}{4^3} } \\ \\  \frac{2}{ \frac{1}{64} } \\ \\ 2 \times 64 \\ \\ 128 \\ \\ Answer: \fbox {128}
5 0
3 years ago
In ΔSTU, s = 4.6 inches, t = 1.8 inches and ∠U=118°. Find the length of u, to the nearest 10th of an inch.
IRINA_888 [86]

Answer:

5.7

Step-by-step explanation:

Delta math

8 0
3 years ago
Find the sum of the following infinite geometric series.
Crazy boy [7]

Answer:

Final answer is \frac{80}{3}.

Step-by-step explanation:

We have been given an infinite geometric series.

Now we need to find it's sum.

common ratio r=-\frac{1}{5}.

plug n=1 to get the first term

a_n=32\left(-\frac{1}{5}\right)^{\left(n-1\right)}

a_1=32\left(-\frac{1}{5}\right)^{\left(1-1\right)}

a_1=32\left(-\frac{1}{5}\right)^{\left(0\right)}

a_1=32\left(1\right)

a_1=32

Now plug these values into infinite sum formula

S_{\infty}=\frac{a_1}{1-r}=\frac{32}{1-\left(-\frac{1}{5}\right)}=\frac{32}{1.2}=\frac{320}{12}=\frac{80}{3}

Hence final answer is \frac{80}{3}.

8 0
3 years ago
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