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Mrac [35]
3 years ago
13

Jeffrey purchase and download 12 songs on Monday he purchase an additional 3 songs on Tuesday the cost to download each song is

$2 write a numeral expression to represent the situation
Mathematics
1 answer:
bonufazy [111]3 years ago
4 0
(12x3)+(3x2) Because on Monday he bought 12 songs for $3 each and on Tuesday he bought 2 songs for $3 each.
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A kennel in Akron charges $9 a night for dogs and $6 a night for cats. Write an expression that can be used to find the total of
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Answer:

90

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6 0
3 years ago
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Two equal groups of seedlings, and equal in height, were selected for an experiment. One group of seedlings was fed Fertilizer A
ser-zykov [4K]

Answer:

Null Hypothesis: H_0: \mu_A =\mu _B or \mu_A -\mu _B=0

Alternate Hypothesis: H_1: \mu_A >\mu _B or \mu_A -\mu _B>0

Here to test Fertilizer A height is greater than Fertilizer B

Two Sample T Test:

t=\frac{X_1-X_2}{\sqrt{S_p^2(1/n_1+1/n_2)}}

Where S_p^2=\frac{(n_1-1)S_1^2+(n_2-1)S_2^2}{n_1+n_2-2}

S_p^2=\frac{(14)0.25^2+(12)0.2^2}{15+13-2}= 0.0521154

t=\frac{12.92-12.63}{\sqrt{0.0521154(1/15+1/13)}}= 3.3524

P value for Test Statistic of P(3.3524,26) = 0.0012

df = n1+n2-2 = 26

Critical value of P : t_{0.025,26}=2.05553

We can conclude that Test statistic is significant. Sufficient evidence to prove that we can Reject Null hypothesis and can say Fertilizer A is greater than Fertilizer B.

6 0
3 years ago
I will give brainliest!!!!
QveST [7]

Answer:

The. Answer. C

Step-by-step explanation:

4 0
3 years ago
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please anybody can help me to solve this question btw im from malaysia but the questions have the eng subtitle so you can read t
Ostrovityanka [42]
13x-2 is the answer to the question
8 0
3 years ago
The answer key says the answer is B, but I don't understand how it is decreasing...isn't the velocity shown to be increasing? An
german

Answer:

Acceleration and velocity are two different things.  The acceleration is the rate at which the velocity is increasing.  So while the velocity very well may be increasing, the rate (acceleration) at which it is, is decreasing.

8 0
3 years ago
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