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Nitella [24]
3 years ago
10

How do you know how to solve algebraic equations in the correct order?

Mathematics
1 answer:
LuckyWell [14K]3 years ago
8 0
You do that by using PEMDAS


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Jeff must do a book report. He reads 3 pages of his book in 13 minutes. He reads 9 pages of his book in 39 minutes. He reads 15
svlad2 [7]
Do you see a pattern in the given information?
 3 pages in 13 min
 9 pages in 39 min
15 pages in 65 min

the rate of pages per min is constant
3/13 = 9/39 = 15/65

the Question is asking for time.. So the we need the rate as min per page 13/3 so when multiplied by the number of pages it cancels to give minutes.

Units cancel out just like numbers do so you know that the problem is set up correctly.

(351 pages) * ( \frac{13min}{3pages})=1521 .minutes

7 0
3 years ago
Which expression is equivalent to <br> 5(6p + 5) + 2(8p + 3)?
Trava [24]

Answer:

46p + 31

hope it's helpful

4 0
3 years ago
Read 2 more answers
The $3.50 chocolate bar I purchased was on sale for 25% off, what did I pay for it?
Alla [95]
I think it was for 2.33 cents??
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3 years ago
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The null hypothesis in ANOVA is that all means of all groups are the same. The alternative is that at least one pair of means is
d1i1m1o1n [39]

Answer:

Correct option: B. Less between group variability

Step-by-step explanation:

The Analysis of Variance (ANOVA) test is performed to determine whether there is a significant difference between the different group mean.

The hypothesis is defined as:

<em>H₀</em>: There is no difference between the group means, i.e. <em>μ</em>₁ = <em>μ</em>₂ = ... = <em>μ</em>ₙ

<em>Hₐ</em>: At least one of the mean is different from the others, i.e. <em>μ</em>_{i} ≠ 0.

The test statistic is defined as:

F=\frac{SS_{between}}{SS_{within}}

If the null hypothesis is true then the test statistic will be small and if it is false then the test statistic will be large.

In this case it is provided that the null hypothesis is true.

This implies that:

SS_{between}

Implying that the sum of squares for between group variability is less than within group variability.

Thus, if the null hypothesis is true there will be less between group variability.

8 0
3 years ago
What do i do on number 7 and 8
natta225 [31]
7. 1,075ft below sea level because 300+500+275=1,075

8. None of the answers choices are correct. I don't know if it's a trick question but none of the above =-5. Go to your teacher and ask her about it, she will be impressed with you
8 0
3 years ago
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