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3 years ago

Idk what this problem is

Mathematics

2 answers:

Kazeer [188]3 years ago

4 0

The answer would be 7 over 4 or you can also put 1 and 3/4

MaRussiya [10]3 years ago

3 0

7 multiplied by 1/4.

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Write the expression below as a single logarithm in simplest form.<br> logo 7 – log, 7

Svet_ta [14]

Given:

The given expression is:

$\log_b7-\log_b7$

To find:

The single logarithm expression for the given expression.

Solution:

Quotient property of logarithm:

$\log_bm-\log_bn=\log_b\left(\dfrac{m}{n}\right)$

We have,

$\log_b7-\log_b7$

Using quotient property of logarithm, we get

$\log_b7-\log_b7=\log_b\left(\dfrac{7}{7}\right)$

$\log_b7-\log_b7=\log_b\left(1\right)$

Therefore, the required expression is $\log_b\left(1\right)$ .

5 0

2 years ago

The mean cost of a five pound bag of shrimp is 40 dollars with a standard deviation of 7 dollars. If a sample of 51 bags of shri

eimsori [14]

Answer:

$P(|\bar{x}-40| > 0.6)=0.5404$

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 40 dollars

Standard Deviation, σ = 7 dollars

Sample size,n = 51

We are given that the distribution of cost of shrimp is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

Standard error due to sampling =

$=\dfrac{\sigma}{\sqrt{n}} = \dfrac{7}{\sqrt{51}} = 0.9801$

P(sample mean would differ by true mean by more than 0.6)

$P(|\bar{x}-40| > 0.6)\\\Rightarrow = 1-P(39.4$

$P(39.4 \leq x \leq 40.6) \\\\= P(\displaystyle\frac{39.4 - 40}{0.9801} \leq z \leq \displaystyle\frac{40.6-40}{0.9801})\\\\ = P(-0.6121 \leq z \leq 0.6121)\\= P(z \leq 0.6121) - P(z < -0.6121)\\= 0.7298 - 0.2702 =0.4596$

$P(|\bar{x}|-40 > 0.6)\\= 1-0.4596=0.5404$

0.5404 is the required probability.

4 0

3 years ago

Ana had softball practice for 2 hours. She practiced pitching for 20 minutes. For what fraction of the time did she practice pit

ahrayia [7]

She spent 1/6 of the time pitching.

3 0

3 years ago

Dale had equal amounts of orange juice, milk, and water that he left in the refrigerator overnight. He took them all out and let

Evgen [1.6K]

Answer:

answer is A

Step-by-step explanation:

All of these liquids were the same temperature when Dale took them out of the refrigerator. They all spent the same amount of time sitting on the counter, but at the end of that time, each one was a different temperature. This means that different liquids change temperatures at different rates.

7 0

3 years ago

How do you solve this using substitution <br> -8x-y=-30<br> Y=12x-50

never [62]

Step-by-step explanation:

substitude the y value into y in the first equation

-8-(12x-50)=30

-8-12x+50=30

you see it?

then solve

-8+50-30=12x

you got the value = 12x

then you divide with 12

finally you get x

7 0

3 years ago