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2 years ago

Which equation is TRUE?

Mathematics

1 answer:

Komok [63]2 years ago

3 0

Answer:

c and d

Step-by-step explanation:

Simplify a: 6x+7=4x+7 ~ No matter what, this cannot be possible

Simplify b: 6x=4x ~ Once again, this is impossible unless x=0, but I'll assume it can't be for now

Simplify c: 4x+7=4x+7 ~ This clearly is a correct statement, this it is c

Simplify d: 6x-1=4x+1 ~ By subtracting 4x on each side, then adding 1 on both sides, we get 2x=2, so x can be 2.

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Carl is wondering if the train he is riding home from school will leave early, on time, or late. The probabilities are as follow

Slav-nsk [51]

Answer:

Probability of each situation is 1/3 .

Step-by-step explanation:

There are 3 possibilities

1- Train will arrive early

2- Train will arrive on time

3- Train will arrive late

Formula for Probability of event a is = n(a)/Sum of events

In this case sum of events = 3

Probability of early arrival = 1/3

Probability of on time arrival = 1/3

Probability of late arrival = 1/3

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2 years ago

Read 2 more answers

(4x+5)(x^2+2x+3) help?

Leya [2.2K]

This is the right anwser

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2 years ago

Choose two positive integers a and b, making sure that a<5 and b>80 . The width of a rectangular computer screen is a inch

qwelly [4]

Answer:

Dimensions of the screen are a minimum of 10 inches wide by 8 inches high. The difference between the height and width will be 2 inches

Step-by-step explanation:

$Height = H$

$Width = H + a$

$Area = Height x Width$

$b = H * (H + a)$

$b = H^{2} + aH$

$H^{2} + aH > 80$

$H^{2} + aH - 80 > 0$

a<5 means 'a' can be a = 1, 2, 3, 4

Solving for H for each option of 'a' will give values of 'H' using the quadratic formula below

$H = \frac{-b\±\sqrt{b^{2}-4ac}}{2a}$

As 'a' and 'b' must be positive integers, H and W must be positive integers as well,

$a = 1, H = 8.46, H = -9.46$

$a = 2, H = 8, H = -10$

$a = 3, H = 7.57, H = -10.57$

$a = 4, H = 7.17, H = -11.17$

Based on above possible answers:

$a=2, H=8$

$W = H + a$

$W = 8 + 2$

$W = 10$

Dimensions of the screen are a minimum of 10 inches wide by 8 inches high. The difference between the height and width will be 2 inches

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2 years ago

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Ilia_Sergeevich [38]

That problem is not complete.

6 0

3 years ago

Read 2 more answers

A rectangular school banner has a length of 40 inches and a width of 24 inches. A sign is made that is similar to the school ban

e-lub [12.9K]

Answer:

The answer is 960

Step-by-step explanation:all you would have to do is multiply the lenth times width. 40x24=960

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2 years ago