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stellarik [79]
3 years ago
9

Simplify the expression by combining like terms. n + 4n - 7n - 1

Mathematics
1 answer:
Pachacha [2.7K]3 years ago
7 0

Answer:

-2n-1

Step-by-step explanation:

n +4n-7n-1

-2n-1

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Giving a test to a group of students, the grades and gender are summarized below
sweet [91]

Answer:

Kindly check explanation

Step-by-step explanation:

________A___ B___ C___ Total

Male____ 9___13___ 6____ 28

Female_ 20__ 19___ 2____ 41

Total___ 29__ 32___ 8____ 69

If one student is chosen at random,

Find the probability that the student got a C:

P(getting C) = (number of C's) / total number

P(getting C) = 8 / 69

Find the probability that the student was female AND got a "C":

P(female and C):

(number of female who got C / total number)

= 2 / 69

Find the probability that the student was male OR got an "B":

P(male OR B) :

(Number of males or B) = (28 + 32) - 13 = 47

= 47 / 90

find the probability that the student got a 'C' GIVEN they are female:______.

P(C given they are female) :

This is the proportion of females who got C

Total Number of females = 41

Females who got C = 2

Hence,

P(C given they are female) = 2 / 41

6 0
4 years ago
This entire quiz is going to be the end of me.
Korolek [52]

Given points (-5,-1) and (5,9):
Let (x1,y1) = (-5,-1)
(x2,y2) = (5,9)

Use the following distance formula:

d = √[(x2 - x1)^2 + (y2 - y1)^2]

d = √[(5 — (-5))^2 + (9 — (-1))^2]

d = √[(5 + 5)^2 + (9 + 1)^2]

d = √[(10)^2 + (10)^2]

Add similar elements:

d = √[(10)^2 • 2]

The squared root of 10^2 is 10, so it goes outside the square root:

d = 10 √2

Therefore, the correct answer is Option 3:
d = 10 √2

Hope this helps :)
5 0
3 years ago
Fitness R Us charges $58 to join the club. During January, the club has a markdown of 51% per joining fee. What is the fee in Ja
neonofarm [45]

Answer:

100-51=49

49/100 x 58

= $28.42

4 0
3 years ago
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Triangle ABC is rotated to form triangle MNO. Which of these statements would prove that the two triangles are congruent?
Sonbull [250]

Answer:A

Step-by-step explanation:

6 0
3 years ago
What is 13.2 round to the nearest whole number
Tamiku [17]
13.2 first look at the 2 if is lower then the number five so u round down to 0 the decimal stays there so it's no 13.0 now u do the same to the 13 only u round up since its higher so u round it up to 20 and ur answer should be 20.0
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