3 years ago

3x + 7 - x = 21 x =

Mathematics

1 answer:

frosja888 [35]3 years ago

5 0

Answer:

x=7/19

Step-by-step explanation:

R u looking for the value of x???

If so happy I could help if not elaborate in the comments

You might be interested in

118 + 560 is the same as<br> 100 +

Fed [463]

Answer:

578

Step-by-step explanation:

118

+560

answer:678

678-100=578

6 0

2 years ago

Read 2 more answers

What is the value of the expression (x-y)2 when x=5 and y=-1

rodikova [14]

(5- -1)2
(5+1)2
6x2
12

6 0

2 years ago

From experience, an airline knows that only 80% of the passengers booked for a certain flight actually show up. If 9 passengers

Olenka [21]

Answer: 0.74

Step-by-step explanation:

Given : The probability that the passengers booked for a certain flight actually show up : p=0.80

The number of passengers are randomly selected : n= 9

Binomial probability formula to find the probability of getting success in x trial :-

$P(x)=^nC_xp^x(1-p)^{n-x}$

Then , the probability that more than 6 of them show up will be :-

$P(x>6)=P(7)+P(8)+P(9)\\\\=^9C_7(0.8)^7(0.2)^{2}+^9C_8(0.8)^8(0.2)^{1}+^9C_9(0.8)^9(0.2)^{0}\\\\=\dfrac{9!}{7!(9-7)!}(0.8)^7(0.2)^{2}+(9)(0.8)^8(0.2)+(1)(0.8)^9\approx0.3020+0.3020+0.1342=0.7382\approx0.74$

Hence, the probability that more than 6 of them show up = 0.74

7 0

3 years ago

I need the answer to this.

Kamila [148]

Answer:

VERY HARD QUESTIONS SO I WILL TELL YOU LATER

4 0

2 years ago

A patient is to receive 1.5 grams (g) of an antibiotic in 3 equal

nordsb [41]

1.5 g = 1500 mg

1500 / 250 = 6

the patient should take 6 tablets each dose.

4 0

2 years ago