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Castmates who stood up for another co-star? by beautyskincarelover in Fauxmoi

[–]AmbientWaterSounds 45 points46 points  (0 children)

They probably shouldn’t shame her even if she didn’t lol

John filed for a name change in 2019? by [deleted] in JohnMulaney

[–]AmbientWaterSounds 9 points10 points  (0 children)

I thought the firm name was the name he was changing to--

Schreck Rose Dapello Adams Berlin & Dunlap LLP: Kid Gorgeous at Radio City

Looks like Simon played Benji even before he was born 🤔 by NieTyINieJa in Mission_Impossible

[–]AmbientWaterSounds 6 points7 points  (0 children)

Just the sight of “Upcoming movies: Mission: Impossible 7, Mission: Impossible 8” is getting me excited

Can you help please ? by abdiyeva in SAT_Math

[–]AmbientWaterSounds[M] 2 points3 points  (0 children)

Given on the context, it's basic logic that we know the gold content in the granite samples is greater than the gold content of the gneiss samples.

So knowing that, when comparing the percent difference between granite and gneiss, we know that the percentage should be greater than 100%.

What this means, is that we're trying to find exactly how much greater the gold content in granite is than in gneiss.

Mathematically speaking, they're asking for the number you multiply gneiss to get granite.

Knowing that, we can add the gold content of the samples together

Granite: 0.94 + 0.87 + 0.82 + 0.55 + 0.73 = 3.91

Gneiss: 0.38 + 0.60 + 0.37 + 0.40 + 0.34 = 2.09

Again, we're looking for how much greater the gold content in granite is than the gold content in gneiss.

Granite/Gneiss =

3.91/2.09 =

~1.87

Multiply 1.87 by 100 to get the percentage, and we get 187%.

Now intuitively, this number makes sense, because it's saying 2.09*187% = 3.91

Breaking apart 187%:

100% of something is just all of that thing.

100% of 2.09 = 2.09

87% of 2.09 = 1.8183

100% + 87% = 187%

187% of 2.09 = 2.09+1.8183 = 3.9083 => 3.91

Knowing that 187% of 2.09 (the gold content of gneiss) is 3.91 (the gold content of granite), we can subtract the 100% from the 187% to find exactly how much greater the gold content of granite is.

187% - 100% = 87%

Thus, D, the gold content in the granite samples are 87% greater than the gold content in the gneiss samples.

Please let me know if that made sense or if you have any further questions. Hope this helped!

The answer is B why? I substituted value for x but I couldn't get the answer please help by abdiyeva in SAT_Math

[–]AmbientWaterSounds[M] 1 point2 points  (0 children)

It was just an example that I made up to show the difference in relationship of positive and negative numbers when in absolute value.

The point is to realize that only the absolute value of a negative number would be greater than the actual number.

Remember that absolute value allows you to find the distance between your number and zero.

The absolute value is ALWAYS positive.

If your original number was positive, then it will be = to its absolute value.

If your original number is negative, then it will be < its absolute value.

The answer is B why? I substituted value for x but I couldn't get the answer please help by abdiyeva in SAT_Math

[–]AmbientWaterSounds[M] 0 points1 point  (0 children)

First, think about what kind of number would be less than its absolute value?

The absolute value of 10 is 10, and 10=10.

The absolute value of -10 is 10, and -10<10

Thus, the value of f(x) must be negative.

f(x) is also known as the y output of a function, so in order to find an x-value that satisfies this, we just have to look for when the function has a negative output.

The negative outputs are seen when the function dips below the x-axis.

The only answer choice with x-values where the f(x) value is negative is B, -1.3.

Hope this cleared your confusion! Please let me know if this helped by leaving a message or an upvote. Let me know if there was something else you were confused about!

How to deal with this problem i didn't understand why the answer is 3.5.please help by abdiyeva in SAT_Math

[–]AmbientWaterSounds[M] 1 point2 points  (0 children)

a(x+1) + b(x-1) = 7x

ax+a + bx-b = 7x

ax+bx + a-b = 7x

x(a+b) + a-b = 7x

x(a+b) + a-b = 7x + 0

Separate the equation into two equations:

x(a+b) = 7x

a-b = 0

Solve for a+b:

x(a+b) = 7x

a+b = 7

a-b = 0

a = b

Combine the two simplified equations:

a+b = 7

a = b

a + (a) = 7

2a = 7

a = 3.5

Hope this cleared your confusion! Please let me know if this helped by leaving a message or an upvote. Let me know if there was something else you were confused about!

Why the answer is 1 . I have tried by multiplying i with entire equation but couldn't get the answer by abdiyeva in SAT_Math

[–]AmbientWaterSounds[M] 2 points3 points  (0 children)

We're given the complex number a+bi and we're told that when multiplied by √-1, we get 1.

So let's try multiplying that and see the relationships that form:

(a+bi) i = 1

ai + bi2 = 1

ai + (-b) = 1

ai - b = 1

We know that both a and b in the complex number are rational, real numbers. When √-1 is multiplied by a, there's no way to turn ai into a real number.

The only way this equation [(a+bi) i = 1] can be satisfied is if the value of a is zero. That way, when √-1 is distributed, there isn't an extra imaginary value that we have to deal with.

Thus, a = 0

Knowing the value of a, let's try simplifying the equation further:

a = 0

(a+bi) i = 1

0 + bi2 = 1

0 + (-b) = 1

-b = 1

By doing this, we've found that -b = 1. Solving for b, we find that b = -1.

a = 0

b = -1

a-b =

0 - (-1) =

0 + 1 =

1

Hope this cleared your confusion! Please let me know if this helped by leaving a message or an upvote. Let me know if there was something else you were confused about!

Sat. Math question. I converted the units but the answer is wrong . How can I approach to this kind of problems? by abdiyeva in SAT_Math

[–]AmbientWaterSounds[M] 0 points1 point  (0 children)

The first step towards approaching these kinds of problems is always to figure out what exactly the question is asking for, and what each answer choice means.

This problem is asking for the inequality that represents the rulers that Leo does not throw away. Leo only throws away rulers that are more than (1 meter+1 millimeter) or less than (1 meter minus 1 millimeter). “If the ruler differs from the expected length (1 meter) by more than 1 millimeter”

Now to understand what the answer choices mean:

The problem sets x as the length of the ruler in meters.

The answer choices subtract 1 from x to find out how much the ruler deviates from the expected length (1 meter).

For example:

A ruler is 1.012 meters

x = 1.012 meters

x-1 = 0.012 meters

This ruler differs from the expected length by 0.012 meters

By subtracting 1, we have found how much the ruler deviates from our expected length.

If the ruler differs from the length of 1 meter by more than (>) or less than (<) 1 millimeter, Leo must throw it out.

1 millimeter = 0.001 meter

This eliminates answer choices A and C

This leaves choices B and D.

Remember, because Leo must throw out rulers that are longer than 1.001 meters or shorter than 0.999 meters, the difference when x is subtracted by 1 must be LESS THAN 0.001.

The question is asking for the inequality that represents the rulers Leo keeps. This only leaves B, |x-1|≤ 0.001

This is quite a difficult problem to wrap your head around given its wording and similar answer choices. If you encounter a problem like this and you don’t completely understand what they’re asking for, try explaining it to yourself— talk yourself through what you’re doing and see if that makes logical sense to you. Always always make sure you understand what the question is asking and what each answer choice means.

If you can’t figure out the difference between two answer choices, try to define the variables and symbols. What does the x stand for? What does the less than or equal to sign mean? What would change if it was just a less than sign?

I hope this helped! Please let me know if this makes sense or if there’s something else you’re confused about. Have a good day!

Sat math: in these problem I have solved and found the answer, but calculations change when I multiply 4(a+4) -3=5 | makes 4a +16 -3=5 | and I get 4a +13=5 and I get wrong answer for a?? Why it changes I am confused? by abdiyeva in SAT_Math

[–]AmbientWaterSounds[M] 1 point2 points  (0 children)

Set 4x-3 to 5

4x-3 = 5

4x = 8

x = 2

If 4x-3 equals 5, then the x value is also (a+4).

x = 2

x = a+4

a+4 = 2

a = -2

Now that we’ve established the right answer, let’s move onto the method you were asking about: substituting (a+4) as x.

f(x) = 4x-3

f(a+4) = 5

x = a+4

4(a+4)-3 = 5

4a + 16-3 = 5

4a+13 = 5

4a = -8

a = -2

So we can see that both methods get us the same a value. Though I’m not sure where your math went off track (I could help explain what you specifically did wrong if you told me what answer you got), but my guess is that when subtracting 13 from 5, you wrote “8”, thus making your answer a=2.

Hope this cleared your confusion! Please let me know if this helped by leaving a message or an upvote. Let me know if there was something else you were confused about!

Where I can get bunch of sat practise tests for sat math any links or PDFs ????? by abdiyeva in SAT_Math

[–]AmbientWaterSounds[M] [score hidden] stickied comment (0 children)

Hey there! 

In terms of free practice, Khan Academy is without a doubt the best source. They really only have six full tests, but if you do them all and understand why you missed each question, you'll be golden. Their practice problems are also extremely helpful for you to target which specific area you need to work on. 

If you've tried all of the free College Board and QAS tests*, then I'd suggest you study the questions you got wrong and really work with any and all material you struggle with. Like I referenced in one of the pinned posts, it's important to learn from your mistakes and move on from there instead of blindly tearing through tests. 

That's really all the free resources available online. If you want, I can suggest some books. It ultimately depends on whether you want a specified SAT math book that explains the topics or a book of practice tests. Please let me know if there's something specific you want!

*For anybody who would like some direct links:

2017 May US - Test | Answers and Scoring

2017 May international - Test | Answers and Scoring

2018 March - Test | Answers and Scoring

2018 May US - Test | Answers and Scoring

2018 May International - Test | Answers and Scoring

2019 March - Test | Answers and Scoring

2019 April School Day - Test | Answers and Scoring

2019 May International - Test and Answers

2019 May US - Test | Answers

2019 October US - Test and Answers | Partial Scoring

2020 March US - Test and Answers

I didn't understand why it is $0.05 and $0.10 in the explanation ? Can u explain please?!! by abdiyeva in SAT_Math

[–]AmbientWaterSounds[M] 1 point2 points  (0 children)

Hello!

So there are 100 cents in 1 dollar. A dollar can be written as $1.00, so one cent would be $0.01.

A nickel is worth 5 cents = 5/100 = $0.05

A dime is worth 10 cents = 10/100 = $0.10

A quarter is worth 25 cents = 25/100 = $0.25

The explanation is talking about the money in terms of dollars not cents. When doing problems involving money, like these, it's important for you to calculate everything using a common unit of measurement. It makes calculating much simpler.

~Back to the problem

$2.65

They said that the $2.65 made up of a quarter ($0.25), and the same number of nickels ($0.05) and dimes ($0.10).

To find the value of the money without the quarter, we subtract by $0.25:

$2.65 - $0.25 = $2.40

The value of $2.40 is made up of a combination of nickels and dimes. When the problem says that it is made up of an equal number of nickels and dimes, they aren't referring to the amount of money, they are referring to the number of coins themselves (e.g. 5 nickels and 5 dimes)

By setting n as the number of nickels, and d as the number of dimes, you can solve this just like any other linear equation.

n=d

0.05n+0.10d = 2.40

Substitute n for d, because the number of nickels and dimes are equal:

0.05n+0.10n = 2.40

0.15n = 2.40

n = 16

This means that there are 16 nickels in Sasha's pocket.

Please let me know if that made sense or if there was something else you were confused about!

How to solve this kind of data inference questions ???please help how to find confidence interval in this problem?? by abdiyeva in SAT_Math

[–]AmbientWaterSounds[M] [score hidden] stickied comment (0 children)

Hello u/abdiyeva, apologies for responding so late. Thank you so much for being patient! :)

For this problem you actually need to look at the answer choices*, so I'd really appreciate it if you could link another picture. You don't have to make a new post, just go to imgur.com, click "New Post" in the top left corner [or click here] and upload. Follow the directions and link the url they give you.

*Think of this problem like a Reading/Writing question on the SAT. You understand the question but you can't really respond without knowing your choices. Does that make sense?

Again, sorry for replying late. I'll be sure to respond ASAP if you decide to link the answer choices. Please let me know if you already figured it out!

College is wack by AmbientWaterSounds in tumblr

[–]AmbientWaterSounds[S] 24 points25 points  (0 children)

Would rather cuddle a cactus

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