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2 years ago

Gina says that for all real numbers a and b, ab=ba. is this statement true or false? If false, give a counterexample

Mathematics

2 answers:

Anika [276]2 years ago

6 0

Answer:

True

Step-by-step explanation:

The communative property states that the order in addition and multiplication dosen't matter.

Yakvenalex [24]2 years ago

3 0

Answer:

true

Step-by-step explanation:

the commutative property of multiplication says that the order of the factors does not change the equation. For Example, 2*3=3*2, =6

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Sam is measuring the velocity of a car at different times. After two hours, the velocity of the car was 50km/h. After six hours,

netineya [11]

You are given the time and speed so from there you can get the points (2,50) and (6,54) once you got that you can see how the slope is 1 and
b=48
x-y=-48 (standard form)

part B=
1 49
2 50
3 51
4 52
5 53
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3 0

3 years ago

What are the missing operations?

Ronch [10]

Answer:

Solution in photo

Step-by-step explanation:

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2 years ago

In a survey at a local college, 18% of students reported that they do not own a mobile device with internet capabilities. if 20

Sholpan [36]

Answer:

0.64

Step-by-step explanation:

The probability that randomly selected student doesn't own a mobile device with internet capabilities is $p=0.18$ and the probability that randomly selected student owns a mobile device with internet capabilities is $q=1-p=1-0.18=0.82.$

If 20 students are selected at random, the probability that at most 5 students (0 students, 1 student, 2 students, 3 students, 4 students or 5 students) don't own a mobile device with internet capabilities is

$Pr=C_{20}^0p^0q^{20}+C_{20}^1p^1q^{19}+C_{20}^2p^2q^{18}+C_{20}^3p^3q^{17}+C_{20}^4p^4q^{16}+C_{20}^5p^5q^{15}=q^{20}+20pq^{19}+190p^2q^{18}+1,140p^3q^{17}+4,875p^4q^{16}+15,504p^5q^{15}\approx 0.6405021423\approx 0.64.$

3 0

3 years ago

Convert 7/3 into a mixed number

antoniya [11.8K]

Answer:

2 1/3

Step-by-step explanation:

4 0

2 years ago

Factorise fully<br> -X – 10<br><br> Pls help

Nataly_w [17]

Answer:

-X – 10=-1(x+10) is your answer

3 0

2 years ago