Please help please I am begging you

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

9 (x + 1) = 9*x + 9*1 = 9x + 9

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the cell wall of which out of this is not made up of cellulose bacteria mango tree hydrilla cactus which one is correct

Answers

Answer:

The cell wall lies outside the plasma membrane. The plant cell wall is mainly composed of cellulose. Cellulose is a complex substance and provides structural strength to plants. Bacteria is not a plant therefore its cell wall is made up of peptidoglycan

Step-by-step explanation:

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Pls help will mark brainliest
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Find the value of t

Answers

Answer: t = 51

Step-by-step explanation:

Well hello buddy. How are you doing today? Might be a little bit bad because you have to deal with this weird triangle. BUT DONT WORRY DOG. I GOT YOU.

notice that that 112 number is on a straight line.... and straight lines are 180 degrees

With this in mind, lets subtract: 180 - 112 and we get= 68

ok so now we have these triangle angles: 68 and 61. also keep in mind that all angles of a triangle add up to 180

so 68 + 61 = 129

now do this: 180 - 129

the answer is 51

Answer:

51⁰

Step-by-step explanation:

there are 180⁰ on a straight line so if substrate 112⁰ from 180⁰ the answer will be 68⁰ so now we can get T simply like this below

61⁰+68⁰+T=180⁰

129⁰+T=180⁰

T=180⁰-129⁰

T=51⁰

The mean SAT score in mathematics, M, is 600. The standard deviation of these scores is 48. A special preparation course claims that its graduates will score higher, on average, than the mean score 600. A random sample of 70 students completed the course, and their mean SAT score in mathematics was 613. a) At the 0.05 level of significance, can we conclude that the preparation course does what it claims? Assume that the standard deviation of the scores of course graduates is also 48.

Answers

Answer:

Step-by-step explanation:

The mean SAT score is $\mu=600$ , we are going to call it \mu since it's the "true" mean

The standard deviation (we are going to call it $\sigma$ ) is

$\sigma=48$

Next they draw a random sample of n=70 students, and they got a mean score (denoted by $\bar x$ ) of $\bar x=613$

The test then boils down to the question if the score of 613 obtained by the students in the sample is statistically bigger that the "true" mean of 600.

- So the Null Hypothesis $H_0:\bar x \geq \mu$

- The alternative would be then the opposite $H_0:\bar x < \mu$

The test statistic for this type of test takes the form

$t=\frac{| \mu -\bar x |} {\sigma/√(n)}$

and this test statistic follows a normal distribution. This last part is quite important because it will tell us where to look for the critical value. The problem ask for a 0.05 significance level. Looking at the normal distribution table, the critical value that leaves .05% in the upper tail is 1.645.

With this we can then replace the values in the test statistic and compare it to the critical value of 1.645.

$t=\frac{| \mu -\bar x |} {\sigma/√(n)}\n\n= (| 600-613 |)/(48/\sqrt(70)}\n\n= (| 13 |)/(48/8.367)\n\n= (| 13 |)/(5.737)\n\n=2.266\n$

since 2.266>1.645 we can reject the null hypothesis.

Answer:

The null hypothesis is that the SAT score is not significantly different for the course graduates.

Alternate hypothesis: there is a significant difference between the SAT score achieved by the course graduates as compared to the non-graduates.

Apply the t-test. The Test Statistic value comes out to be t = 1.738 and the p-value = 0.0844

Since the p-value is larger than 0.05, the evidence is weak and we fail to reject eh null hypothesis.

Hope that answers the question, have a great day!

Which BEST describes the distribution?A)
Skewed
B)
Uniform
C)
Symmetric, bimodal
D)
Non-symmetric, bimodal

Answers

Answer:

Step-by-step explanation:

Final answer:

The distribution is skewed.

Explanation:

The question asks about the description of the distribution of a dataset. To determine how the data is distributed, we need to analyze the shape of the graph or histogram representing the data.

If the dataset is skewed, it means that the data is not evenly distributed and there is a tail on one side. So, option A is correct. If the dataset had a bell-shaped graph with a single peak, it would be symmetric, but since it is bimodal, with two distinct peaks, option D is not accurate. The options B and C are not applicable based on the given information.

Therefore, the best description for the distribution is skewed.

Learn more about Distribution in Mathematics here:

brainly.com/question/33576480

#SPJ2

What is the approximate circumference pf the circle shown below?

Answers

Answer:

A: 20pi

Step-by-step explanation:

c=2(pi)r

c=2(pi)(10)

c=20(pi)

c=62.8

Find the points on the given curve where the tangent line is horizontal or vertical. (Assume 0 ≤ θ < π. Enter your answers as a comma-separated list of ordered pairs.)r = 6 cos(θ)