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Dafna11 [192]
3 years ago
5

4 more than the product of three and number x

Mathematics
2 answers:
Mekhanik [1.2K]3 years ago
6 0

Answer:

3x +4

Step-by-step explanation:

More than means add and product means multiply

3x +4

Ludmilka [50]3 years ago
5 0

Answer:

3x times 4

Step-by-step explanation:


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Vinvika [58]

Answer:

6^21 = B

Step-by-step explanation:

[6^{7} ]^{3} \\(6)^7^*^3\\6 ^{21} \\

4 0
3 years ago
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If x=4cos(2t) and y=4sin(2t), what is the parameter of these equations
kobusy [5.1K]

Answer:

y=√(4+x)(4−x)

Step-by-step explanation:

7 0
3 years ago
According to a survey, the average American person watches TV for 3 hours per week. To test if the amount of TV in New York City
Neporo4naja [7]

Answer:

Test statistic (t-value) of this one-mean hypothesis test is -2.422.

Step-by-step explanation:

We are given that according to a survey, the average American person watches TV for 3 hours per week. She surveys 19 New Yorkers randomly and asks them about their amount of TV each week, on average. From the data, the sample mean time is 2.5 hours per week, and the sample standard deviation (s) is 0.9 hours.

We have to test if the amount of TV in New York City is less than the national average.

Let Null Hypothesis, H_0 : \mu \leq 3  {means that the amount of TV in New York City is less than the national average}

Alternate Hypothesis, H_1 : \mu > 3   {means that the amount of TV in New York City is more than the national average}

The test statistics that will be used here is One-sample t-test statistics;

        T.S. = \frac{\bar X - \mu}{\frac{s}{\sqrt{n} } } ~ t_n_-_1

where, \bar X = sample mean time = 2.5 hours per week

             s = sample standard deviation = 0.09 hours

             n = sample size = 19

So, <u>test statistics</u> = \frac{2.5 - 3}{\frac{0.9}{\sqrt{19} } } ~ t_1_8

                              = -2.422

Therefore, the test statistic (t-value) of this one-mean hypothesis test (with σ unknown) is -2.422.

8 0
3 years ago
If x=64, what is the value of x(x-8)?
RUDIKE [14]

Answer:

x = 64 \\  \\ x(x - 8) \\  = 64(64 - 8) \\  = 64 - 56 \\  = 8

Hope it helps!

6 0
3 years ago
Read 2 more answers
When x =1/2 what’s is value of 8x-3/x
AlladinOne [14]

Answer:

The answer you should be getting is : =-2

Step-by-step explanation:

=8(\frac{1}{2}) -\frac{3}{\frac{1}{2}}

=-2

4 0
3 years ago
Read 2 more answers
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