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Svet_ta [14]
4 years ago
7

What are two numbers that have a sum of 15

Mathematics
2 answers:
lesya692 [45]4 years ago
7 0
I think that it is 3 and 12
Ira Lisetskai [31]4 years ago
4 0

Answer:

7+8

Step-by-step explanation:

They have a sum of 15

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Which of the following statements about blocks variation is false? a. It equals the sum of the squared deviations between each b
luda_lava [24]

Answer:

d. In three-way ANOVA, it equals the block sample mean.

Step-by-step explanation:

Blocks variation is the analysis of variance. Block variations equals sum of squared deviation between each block sample mean. ANOVA is a statistical technique designed to test mean of one or more quantitative populations.  In two-way ANOVA it equals the block mean. Column block means square is three-way ANOVA. Block means square in two-way ANOVA without interactions the treatment mean square.

6 0
3 years ago
Janie and Jasmine are playing three games at an arcade. Each of the games requires either 2, 3, or 4 tokens. The girls plan to p
Brrunno [24]

Answer:

m+2n+2p=16 tokens or m+2(n+p)= 16 tokens

Step-by-step explanation:

First, we must understand how many tokens they have.

Janie played the 3-token game four times, so she used 12 tokens  (3n x 4 = 12). Jasmine played the 4-token game five times, so she used 20 tokens (4p x 5 = 20).

Added up, the girls have 32 tokens (12+20 = 32 tokens (t)).

In order to play a round of the three games, 9 tokens are required (m+n+p = 9 / 2+3+4 = 9) by each girl. (32t-18t=14) 14 tokens are left after taking a ride in every game each. 14 left divided by 2 will leave 7 more tokens for each girl. You can split these 7 tokens into an n+p = 7 tokens

Thus,

Each girl can ride as follows:

m+2n+2p=16 tokens or m+2(n+p)= 16 tokens

4 0
3 years ago
A survey conducted five years ago by the health center at a university showed that 18% of the students smoked at the time. This
SIZIF [17.4K]

Answer:

Test statistics = 2.29

P-value = 0.01101

Step-by-step explanation:

We are given that a survey conducted five years ago by the health center at a university showed that 18% of the students smoked at the time. This year a new survey was conducted on a random sample of 200 students from this university, and it was found that 50 of them smoke.

Let Null Hypothesis, H_0 : p = 0.18 {means that the percentage of students who smoke has remained same at 18% over the last five years}

Alternate Hypothesis, H_1 : p > 0.18 { means that the percentage of students who smoke has increased over the last five years}

The test statistics used here will be ;

       T.S. = \frac{\hat p -p}{\sqrt{\frac{\hat p (1-\hat p)}{n} } } ~ N(0,1)

where, \hat p = sample proportion of students = 50/200 = 0.25

            n = sample size = 200

So, test statistics = \frac{0.25 -0.18}{\sqrt{\frac{0.25 (1-0.25)}{200} } }

                            = 2.29

Now, P-value is given by = P(Z > 2.29) = 1 - P(Z <= 2.29)

                                                               = 1 - 0.98899 = 0.01101 or 1.101 %

Therefore, P-value of the test is 0.01101 .

3 0
3 years ago
Fx = 6x and gx = 4x+ 1 find (fog)x
kumpel [21]
(fg)x = f(g(x)) = 6(4x+1) = 24x + 6
4 0
3 years ago
Read 2 more answers
The length of a rectangle is given by L=3y + 4x while the width is
Wittaler [7]

Answer:

21y² +34 yx + 8x²

Step-by-step explanation:

Area of a rectangle is given by L×W where L is length, and W is width

Given L=3y+4x

          W=7y+2x

Area= (3y+4x) × (7y+2x)

          3y(7y+2x) + 4x(7y+2x)

           21y² + 6yx +28yx+8x²

            21y² +34 yx + 8x²

3 0
3 years ago
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