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4 years ago

Does 3x-2+x+8=1/2(9x+7-x+5) have no solution or infinite solutions

Mathematics

1 answer:

kupik [55]4 years ago

6 0

Answer:

Step-by-step explanation:

3x - 2 + x + 8 = ( 9x + 7 - x + 5)/2

Add the like terms

4x + 6 = 8x + 12/2

Cross multiply or multiply both side by two

2(4x + 6) = 8x + 12

Use 2 to open the bracket

8x + 12 = 8x + 12

Collect like terms

8x - 8x = 12 - 12

0 = 0

Therefore, the equation has no solution

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Question part points submissions used as a science project, you drop a watermelon off the top of the empire state building, 320

Nataly [62]

We are given a watermelon dropped at free fall from a building 320 meters above the sidewalk. Superman is headed down at 30 meters per second. We are asked to determine how fast is the watermelon going when it passes Superman. To solve for the final velocity of the watermelon, we will use one of the kinematic equations (free fall):

vf = vi + a*t

where vf is the final velocity
vi is the initial velocity, zero
a is the acceleration, in this case, gravitational acceleration = 9.8m/s^2
t is time

we also need to set-up another equation using the distance:

d = vf + vi / 2 * t

(1) 320 m = vf * t /2

(2) vf = 9.8 m/s^2 * t

From here, we have two equations and two unknown, thus we can solve the problem by substitution.

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4 years ago

Can someone please help?

marta [7]

Answer:

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3 years ago

Help please I’m not sure if this is right

Schach [20]

Answer:

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Step-by-step explanation:

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3 years ago

The population of the African country of Madagascar in 2018 is about 26 million. The estimated population of Madagascar is given

MrRissso [65]

Answer:

The current population of Madagascar is 28,354,778 as of Thursday, June 10, 2021, based on Worldometer elaboration of the latest United Nations data.

Madagascar 2020 population is estimated at 27,691,018 people at mid year according to UN data.

Madagascar population is equivalent to 0.36% of the total world population.

Madagascar ranks number 51 in the list of countries (and dependencies) by population.

The population density in Madagascar is 48 per Km2 (123 people per mi2).

The total land area is 581,795 Km2 (224,632 sq. miles)

38.5 % of the population is urban (10,670,252 people in 2020)

The median age in Madagascar is 19.6 years.

Step-by-step explanation: i dont know man

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3 years ago

Help me pls pls pls thanks I

levacccp [35]

Answer:

T (3 , -6) O ( -6 , -4) and M (-9 , 6)

Step-by-step explanation:

(x , y) -> (-x , -y)

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3 years ago