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maksim [4K]
2 years ago
5

Please help me with this plz

Mathematics
1 answer:
NeX [460]2 years ago
5 0

Answer:

A yes

B  yes

C  No

D  No

Step-by-step explanation:

If it is a function then the first number in the ordered pair is use only one time.

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The first modern humans appeared on Earth about 200,000 years ago. Would it be possible to measure that number in terms of feet
Marina86 [1]
Hi um i know this answer is 79
8 0
2 years ago
A tobacco company claims that its best-selling cigarettes contain at most 40 mg of nicotine. The average nicotine content from a
tatuchka [14]

Answer:

t=\frac{42.6-40}{\frac{3.7}{\sqrt{15}}}=2.722    

df=n-1=15-1=14  

p_v =P(t_{(14)}>2.722)=0.0083  

We see that the p value is lower than the significance level given of 0.01 so then we can conclude that the true mean for the nicotine content is significantly higher than 40 mg

Step-by-step explanation:

Information provided

\bar X=42.6 represent the average nicotine content

s=3.7 represent the sample standard deviation

n=15 sample size  

\mu_o =40 represent the value to check

\alpha=0.01 represent the significance level for the hypothesis test.  

t would represent the statistic

p_v represent the p value for the test

System of hypothesis

We want to verify if the nicotine content of the cigarettes exceeds 40 mg , the system of hypothesis are:  

Null hypothesis:\mu \leq 40  

Alternative hypothesis:\mu > 40  

The statistic for this case would be:

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}  (1)  

And replcing we got:

t=\frac{42.6-40}{\frac{3.7}{\sqrt{15}}}=2.722    

The degrees of freedom are:

df=n-1=15-1=14  

The p value would be:

p_v =P(t_{(14)}>2.722)=0.0083  

We see that the p value is lower than the significance level given of 0.01 so then we can conclude that the true mean for the nicotine content is significantly higher than 40 mg

6 0
3 years ago
Helpp I just need the total of both
Fynjy0 [20]
5 small cards ($12) and 3 large cards ($11.85) and the total of both ($12 + $11.85) = $23.85
3 0
2 years ago
HELP ME!!! I've been stuck!​
Olin [163]

Answer:

  • You have to fill the blank squares to complete the table.

  • See the figure attached and the explantion below.

Explanation:

The figure attached shows the three squares that you have to fill to complete the table to summarize the different <em>theorems</em> to <em>prove triangles are congruent.</em>

<u>1. SAS</u>

<u></u>

SAS stands for Side Angle Side. That means that whenever two sides and the included angle on one triangle are congruent to two sides and the included angle of another triangle, then those two triangles are congruent.

Thick marks are used to mark the corrsponding parts, sides or angles that are congruent. That is why the two triangles to the first triangles on the image (on the upper square to the right) are marked:

  • One thick straight mark for two sides that are congruent
  • Two thick straight marks for the other two sides that are congruent
  • On thick curved mark for the two angles that are congruent

In that way, the figures show two triangles, with two congruent sides and the included angle congruent, to prove that the two triangles are congruent by the SAS theorem.

<u>2. ASA</u>

<u></u>

ASA stands for Angle Side Angle.

The ASA congruency theorem states that if two angles of a triangle and the included side are congruent, then the two triangles are congruent.

Thus you have to add the legend "Two congruent angles with and included side", which means that if the two angles and the included side on one triangle are congruent to two angles and the included side of other triangles, then both triangles are congruent.

The rule to mark the sides and angles that are congruent is with the use of thick marks. This is how it was done in the drawing of the two triangles in the lower right square:

  • One thick straight mark for two sides that are congruent
  • One thick curved mark for two angles that are congruent
  • Two thick curved marks for the other two angles that are congruent

6 0
3 years ago
PLEASE HELP WILL MARK BRAINLIEST AND GIVE 5.0 STAR RATING
dusya [7]

Answer:

Mid point is(1,-6)

Explanation: Add the Xs together and divide by 2. Do the same for the Ys.

5 0
2 years ago
Read 2 more answers
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