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egoroff_w [7]
3 years ago
13

Identify the subsets of real numbers to which the number 25√ belongs.

Mathematics
2 answers:
Radda [10]3 years ago
8 0
It would be rational
Aloiza [94]3 years ago
3 0
Rational

Reasoning: The number 25 is a rational number. It is a whole number that can be written as the fraction 25/1.
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Solve the equation for b ​
Keith_Richards [23]

Answer:

D. b=7a

Step-by-step explanation:

Add -11/3a to both sides.

\frac{1}{3}b=\frac{7}{3}a

Divide both sides by 1/3

1 /3 b ÷1/ 3 = 7/ 3 ÷a 1 /3

and the answer is

b=7a

ik this doesnt make any sense but hope this helps

5 0
2 years ago
Read 2 more answers
Independent random samples of vehicles traveling past a given point on an interstate highway have been observed on monday versus
quester [9]
Hi! 

To compare this two sets of data, you need to use a t-student test:

You have the following data:

-Monday n1=16; <span>x̄1=59,4 mph; s1=3,7 mph

-Wednesday n2=20;  </span>x̄2=56,3 mph; s2=4,4 mph

You need to calculate the statistical t, and compare it with the value from tables. If the value you obtained is bigger than the tabulated one, there is a statistically significant difference between the two samples.

t= \frac{X1-X2}{ \sqrt{ \frac{(n1-1)* s1^{2}+(n2-1)* s2^{2} }{n1+n2-2}} * \sqrt{ \frac{1}{n1}+ \frac{1}{n2}} } =2,2510

To calculate the degrees of freedom you need to use the following equation:

df= \frac{ (\frac{ s1^{2}}{n1} + \frac{ s2^{2}}{n2})^{2}}{ \frac{(s1^{2}/n1)^{2}}{n1-1}+ \frac{(s2^{2}/n2)^{2}}{n2-1}}=33,89≈34

The tabulated value at 0,05 level (using two-tails, as the distribution is normal) is 2,03. https://www.danielsoper.com/statcalc/calculator.aspx?id=10

So, as the calculated value is higher than the critical tabulated one, we can conclude that the average speed for all vehicles was higher on Monday than on Wednesday.



5 0
3 years ago
What is the y intercept of c=0.05m+4.95
Burka [1]
The y intercept is where m=0. Hence, set m=0 and solve for c:
c=0.05(0)+4.95
c=4.95

7 0
3 years ago
What number can go into 42 and 21
kkurt [141]

Answer:

7

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Prove that the value of the expression: (125^2+25^2)(5^2–1) is divisible by 39
prisoha [69]

Answer:

(1252+252)(52−1)

=(1252+252)(52+−1)

=(1252)(52)+(1252)(−1)+(252)(52)+(252)(−1)

=390625−15625+15625−625

=390000

divide by 39 is

=10000

4 0
3 years ago
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