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Trava [24]
3 years ago
6

DUE TONIGHT. Im really confused please help me with what you can and show work. I will mark Brainly!!

Mathematics
1 answer:
Alex73 [517]3 years ago
8 0

Answer:

The answer is A

Step-by-step explanation:

8a+a−3+6a−2a−3

=8a+a+−3+6a+−2a+−3

Combine the like terms:

=8a+a+−3+6a+−2a+−3

=(8a+a+6a+−2a)+(−3+−3)

=13a+−6

Answer:

=13a−6

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Answer:

3.) {2x+2y=62; x+4y=70

4 0
3 years ago
A sample of 300 urban adult residents of a particular state revealed 65 who favored increasing the highway speed limit from 55 t
forsale [732]

Answer and explanation:

Null hypothesis(H0) says sentiment for increasing speed limit in the two populations is the same

Alternative hypothesis(Ha) says sentiment for increasing speed limit in the two populations is different

Where p1 is the first population proportion =65/297= 0.22

And p2 is the second population proportion = 78/189= 0.41

P= p1+p2/n1+n2= 65+78/297+189= 0.29

Hence H0= p1-p2=0

Ha=p1-p2≠0

Test statistic= p1-p2/√p(1-p) (1/n1+1/n2)

= 0.22-0.41/√0.29(1-0.29)(1/297+1/189)

= -4.49

Critical value at 95% significance level= 1.96( from tables)

We therefore reject null hypothesis as critical value is greater than test statistic

Therefore the sentiment for increasing speed limit in the two populations is different

b. at proportions of 0.24 and 0.40 for p1 and p2 respectively

Test statistic = 0.24-0.40/0.29(1-0.29)(1/297+1/189)

= -3.78

P value is 0.0002 at 0.05 significance level

Hence probability =0.4998

7 0
3 years ago
If 15% of the total ticket sales 375 dollars what is the value of the total ticket sales
EleoNora [17]
2500 dollars is the total
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3 years ago
Which property states that for all real numbers, x, y and z, if x = y and y = z, then x = z ?
Leto [7]

Answer:

The transitive property of equality

Step-by-step explanation:

The transitive property states if a=b and b=c then a=c. If two things are equal and one of those two things is equal to another thing, then they all must be equal.


4 0
3 years ago
Find the product of 275 and 938
kykrilka [37]

Product means "multiply"

Multiply the two numbers

275 x 938 = 257950

257,950 is your answer

hope this helps

7 0
3 years ago
Read 2 more answers
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