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:( Our professor has not shared the lecture notes yet (he doesn't let us write in class unless we're working out a problem, Dumb thing to do I know) and I have such a horrible memory with math especially with dealing with fractions. I can't remember how we did the similar problem today. Please explain step by step with this equation i'm going to provide. :) Thank you kind Stranger(s) for taking the time to answer it.If x−y=2 and x=5/2, find y.

Answers

Answer 1

Answer:

Answer:

y = 1/2

Step-by-step explanation:

Notice in this equation (x − y = 2) that there is "x".

Look at the other equation; it also has "x" (x = 5/2).

When the same variable is used, it has to be the same number.

Therefore x = x in both equations.

You can substitute, or replace one of the "x" with a value that another "x" is equal to => x = 5/2

We can replace the "x" in x − y = 2 using 5/2.

Take the longer equation

x − y = 2

(5/2) − y = 2 Substitute the value of "x"

5/2 − y = 2 Remove the brackets, they are not needed

Now isolate "y" to solve. This means to move everything that is not "y" to the right side, keeping "y" on the left.

When you move a number, do its reverse operation to the whole equation.

5/2 − 5/2 − y = 2 − 5/2 Subtract 5/2 on both sides

−y = 2 − 5/2 The 5/2's cancelled out on the left

Change "2" into fraction form because you need to subtract a fraction.

−y = $(2)/(1)-(5)/(2)$

−y = $(2*2)/(1*2)-(5)/(2)$ Use a common denominator

−y = $(4)/(2)-(5)/(2)$ Both denominators are the same

−y = $(4-5)/(2)$ Combine over the same denominator

−y = $(-1)/(2)$ Subtracted the numerators.

−y = $-(1)/(2)$ Rewrite the negative

−y/-1 = $-(1)/(2)/-1$ Divide both sides by -1

y = $(1)/(2)$ Answer, solved for "y"

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PLEASE ANSWER Add. 51.342 + 36.530

Answers

Use the calculator :v nvm the answer is 87.872

87.872 is the answer

The table shows the number, expressed in millions, of citizens who moved in 2004, categorized by where they moved and whether they were an owner or a renter. find the probability, expressed as a decimal rounded to the nearest number of people in a certain country who moved in 2004, in millions moved to same region moved to different region moved to different country owner 11.6 11.6 2.7 2.7 0.4 0.4 renter 18.7 18.7 4.5 4.5 1.0 1.0 hundredth, that a randomly selected citizen who moved in 2004 was a person who moved to a different region to a different region.

Answers

The table is attached.
You need to find the probability, expressed as a decimal rounded to the nearest hundredth, that a randomly selected citizen who moved in 2004 was a person who moved to a different region.

What you need to calculate is the empirical probability: the number of success over the total number of outcomes.

People who moved to a different region = 2.7 + 4.5 = 7.2 millions
People who moved in 2004 = 11.6 + 2.7 + 0.4 + 18.7 + 4.5 + 1.0 = 38.9 millions

P = People who moved to a different region / People who moved in 2004
= 7.2 millions / 38.9 millions = 0.18508997

Therefore, the probability that a randomly selected citizen who moved in 2004 was a person who moved to a different region is P = 0.19

Answer:

Step-by-step explanation:

0.19

The volume of this pyramid is 351 m3. If the area of thebase is 81 m² how high is the pyramid?

Answers

9514 1404 393

Answer:

13 m

Step-by-step explanation:

The volume formula is ...

V = (1/3)Bh

where B is the base area and h is the height.

Filling in the given values, we can solve for h.

351 m³ = (1/3)(81 m²)h

351/27 m = h = 13 m . . . . . divide by the coefficient of h

The height of the pyramid is 13 meters.

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Answers

Answer:

1 and 1 on edg 2020

Step-by-step explanation:

just did the assignment

next question : Find the following determinant by hand.

answer is : 1

Next question : In mathematics, a pattern may suggest a conclusion, but it is not proof of it. Next you will prove that the determinant of a rotation matrix (CCW about the origin) must be 1. Luckily, there is the general rotation matrix you can use.

Answer : cos^2x + sin^2x

Next question : Using trigonometric identities, this can be simplified to

Answer : 1

Answer:

continuing with whole assignment, first half is creditied to brainly user above.

Step-by-step explanation:

Using both the rotation matrices earlier in this lesson and your matrix calculator, find each determinant.: 1 and 1

next question : Find the following determinant by hand.

answer is : 1

Answer : cos^2x + sin^2x

Next question : Using trigonometric identities, this can be simplified to

Answer : 1

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Answer: All these reflections resulted in CONGRUENT figures.

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a b

c d

where At is the transform of A. answer: a=1 b=0 c=0 d=1

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Algebraic expression for three more than a number is twenty less than three times the same number write equation form

Answers

Answer:

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Step-by-step explanation:

3+x = 20 - 3x

More than = adding

is is equal to

new vintage 1965 convertible requires an ol change every 400 miles and replacement of all fBuids every 13,000 mles If these services have pust been performed by the dealer, how many mles from now will both be due at the same tme? The services will both be due at the same ime agan in mdes (Type a whole rumber)

Answers

Answer:There are 26000 miles that will both be due at the same time.

Step-by-step explanation:

Since we have given that

Number of miles required by new vintage = 400

Number of miles if these services have must been performed by the dealer = 13000

We need to find the number of miles from now that will both be due at the same time.

We would use "LCM of 400 and 13000":

As we know that LCM of 400 and 13000 is 26000.

So, there are 26000 miles that will both be due at the same time.

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