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mote1985 [20]
3 years ago
11

2x+4(2x+7)=3(2x+4) What is x

Mathematics
2 answers:
Rainbow [258]3 years ago
8 0

Answer:

x = -4

Step-by-step explanation:

2x+4(2x+7)=3(2x+4)

Distribute

2x+8x + 28 = 6x +12

Combine like terms

10x +28 = 6x +12

Subtract 6x from each side

10-6x+28 = 6x +12 -6x

4x +28 = 12

Subtract 28 from each side

4x+28-28 = 12-28

4x = -16

Divide each side by 4

4x/4 = -16/4

x = -4

pav-90 [236]3 years ago
6 0

Answer:

x = -4

Step-by-step explanation:

2x+4(2x+7)=3(2x+4)

2x + 8x + 28 = 6x + 12

10x + 28 = 6x + 12

4x = -16

x = -4

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I would greatly appreciate if anyone could show me how to complete this problem.
Naya [18.7K]

Answer:

the best way to solve this is to have graph paper, so your numbers and points align. I have a model attached. the first point is hours slept 8. so on your graph go to 8 then across to 83, which is the test score. make a mark to represent this point. do this for all and it will create a line

4 0
2 years ago
A complex electronic system is built with a certain number of backup components in its subsystems. One subsystem has four identi
Tcecarenko [31]

Answer:

a. 0.1536

b. 0.9728

Step-by-step explanation:

The probability that a component fails, P(Y) = 0.2

The number of components in the system = 4

The number of components required for the subsystem to operate = 2

a. By binomial theorem, we have;

The probability that exactly 2 last longer than 1,000 hours, P(Y = 2) is given as follows;

P(Y = 2) = \dbinom{4}{2} × 0.2² × 0.8² = 0.1536

The probability that exactly 2 last longer than 1,000 hours, P(Y = 2) = 0.1536

b. The probability that the system last longer than 1,000 hours, P(O) = The probability that no component fails + The probability that only one component fails + The probability that two component fails leaving two working

Therefore, we have;

P(O) = P(Y = 0) + P(Y = 1) + P(Y = 2)

P(Y = 0) = \dbinom{4}{0} × 0.2⁰ × 0.8⁴ = 0.4096

P(Y = 1) = \dbinom{4}{1} × 0.2¹ × 0.8³ = 0.4096

P(Y = 2) = \dbinom{4}{2} × 0.2² × 0.8² = 0.1536

∴ P(O) = 0.4096 + 0.4096 + 0.1536 = 0.9728

The probability that the subsystem operates longer than 1,000 hours = 0.9728

4 0
2 years ago
There are 4grams of fiber in 1/2 cup of oats. how many grams of fiber are in 3 1/2 cuña of oats​
aleksklad [387]

Answer:

28 grams

Step-by-step explanation:

8 x 3 = 24

24 + 4 = 28

7 0
2 years ago
Leanne and her family plan to attend a symphony at an orchestra hall. Before booking the tickets, Leanne checked a website where
lord [1]

Using proportions, it is found that Leanne's family should book their tickets at Section U1 to maximize their chances of having a "perfect" view.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three.

In this problem, the section with the highest proportion of perfect views should be chosen, hence:

pL1 = 57/90 = 0.633

pL2 = 33/52 = 0.635

pL3 = 47/75 = 0.623

PU1 = 55/84 = 0.655

pU2 = 27/43 = 0.628

pU3 = 22/35 = 0.629

Leanne's family should book their tickets at Section U1 to maximize their chances of having a "perfect" view.

More can be learned about proportions at brainly.com/question/24372153

#SPJ1

3 0
1 year ago
Read 2 more answers
Please help me in this question, pleaee
-Dominant- [34]

Answer:

They will meet in 5:30.

Step-by-step explanation:

'Cause you have to fin the LCM (least common multiple). And in this case the LCM is 30.

7 0
3 years ago
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