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3241004551 [841]
3 years ago
6

The solution of equations system using the Substitution Method

Mathematics
1 answer:
AlexFokin [52]3 years ago
5 0

Answer:

True

Step-by-step explanation:

\begin{cases} y = 3x \\\\ 2y + 2x = 24\end{cases}

Plugging y = 3x in the equation 2y + 2x = 24, we find:

2(3x) + 2x = 24

6x + 2x = 24

8x = 24

x= 24/8

x = 3

Plugging x = 3 in the equation y = 3x we have:

y = 3*3 = 9

(x, y) = (3, 9)

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a certain flight arrives on time percent of the time. suppose flights are randomly selected. use the normal approximation to the
iVinArrow [24]

The probability that exactly 128 flights are on time is 88.27% and the probability that atleast 1 flight is on time is 0.022.

Given that the chances of reaching the flight on time be 88%.

We are required to find the probability that exactly 128 flights are on time, atlleast 1 flight on time.

Probability is basically the calculation of likeliness of happening an event among all the events possible. It lies between 0 and 1.

Probability=Number of items/Total items.

It cannot be negative.

Probability that the flight will be on time if one flight is selected=0.88

Probability that exactly 128 flights are on time=

128=1145*P/100

P=12800/145

P=88.27%

b) Atleast 1 flight is on time

=(128C_{0}(0.88)^{0} (0.12)^{1}+128C_{1} (0.88)^{1} (0.12)^{11})/128

=(0.12+128*0.88*0.245)/128

=(0.12+2.575)/128

=0.022

Hence the probability that exactly 128 flights are on time is 88.27% and the probability that atleast 1 flight is on time is 0.022.

Learn more about probability at brainly.com/question/24756209

#SPJ4

Other options are incomplete and not found anywhere else.

8 0
2 years ago
The weight of a particle of unobtainium is 2.66 x 10−6oz. The weight of a grain of spice is 9.17 x 10−4oz. About how much more d
Semenov [28]

Answer:

D 9.1 x 10^(-4) oz

Step-by-step explanation:

9.17 x 10^(-4) oz - 2.66 x 10^(-6) oz =

= 9.17 x 10^(-4) oz - 0.0266 x 10^(-4) oz

= 9.1 x 10^(-4) oz

4 0
3 years ago
Ms. Palmer is buying pencils and erasers. The pencils come in packs of 8. The erasers come in packs of 12. Ms. Palmer wants to h
Aliun [14]
3 packs of pencils is 24 pencils total

2 packs of erasers is 24 erasers total

she will have equal amount of both

answer is 3packs pencils 2packs erasers

4 0
3 years ago
The cook in the school cafeteria made 47 1/2 cups of mashed potatoes. If there are 1 1/4 cups mashed potatoes in a serving, how
victus00 [196]
The answer would end up being 38 servings.


Hope this helped.
Private message me if you have any questions.

Please give brainliest if possible.
Thank you.
5 0
3 years ago
Perform the indicated operations:
Damm [24]

Answer:

A= -40

B= 16

C= 40

D= 50

Step-by-step explanation:

8 0
3 years ago
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