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Anna [14]
3 years ago
15

What does x mean in a math equation

Mathematics
2 answers:
lara [203]3 years ago
8 0
X is a variable. You dont have to know what the value is.In the equation it may ask you to find the value of x 
monitta3 years ago
4 0
An unknown variable ..............
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Which are true or false
Savatey [412]

we are given

y=19.75x

Here,

y is the number of gallons of water in the pool

x is the number of minutes the truck has been filing the pool

now, we will verify each options

option-A:

When x=1

then y=19.75

so, for 1 minute , number gallons =19.75

so, this is FALSE

option-B:

Since, we have

y=19.75x

It is similar to equation of line

y=mx+b

But b=0

It means that it passes through origin

so, this is TRUE

option-C:

y=19.75x

we can compare it with

y=mx

where m is the rate

so, we get

m=19.75

while we are given

the water in swimming pool increase about 100 gallons by every 5 minutes

so, we get rate as

m=\frac{100}{5} =20 gallons per minute

this is close to 19.75

so, they are approximately equal

so, this is TRUE

option-d:

x-value and y-value will show relationship

and ratio will always be constant or equivalent

because it has linear relationship

so, this is TRUE

option-e:

We need to check

(8,150) ..so, x=8 and y=150

we can plug this in our equation

and we get

150=19.75\times 8

150=158

Since, left side is not equal to right side

so, this can not be point

so, this is FALSE


5 0
3 years ago
Oscar was not safeguarding his personal identification and chose a two-digit PIN for his debit card using the numbers 0 - 9. Wit
ryzh [129]

There are 90 different identification numbers possible.

<h3>What are the permutation and combination?</h3>

In terms of mathematical concepts, “permutation” and “combination” are related to each other.

The combination is the counting of selections that we make from n objects.

Oscar was not safeguarding his personal identification and chose a two-digit PIN for his debit card using the numbers 0 - 9.

There are 10 possible values for each digit of the PIN (namely: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9), so there are;

10 × 10 = 100 total possible PINs.

Now, because you can't use the same number twice, we subtract 10 from 100 because there are 10 numbers that can match themselves.

100 -10 =90

Hence, there are 90 different identification numbers possible.

Learn more about combination here;

brainly.com/question/24138361

#SPJ2

5 0
2 years ago
Read 2 more answers
If i'm getting 20% commission from a monthly sale of $800000 what is my 30% in month of sale be?
Oksana_A [137]

Answer:

Your commission check for the 20% would be $160,000 and your 30% would be $240,000.

Step-by-step explanation:

To find each of these, multiply the total number of sales by the percentage of the commission.

$800,00*20% = $160,000

$800,000*30% = $240,000

6 0
3 years ago
How is a dollar hdhxnndnxnxnrxncnbcb thxjjchxnfnxbc
11Alexandr11 [23.1K]

Answer:

uhm idk..... it's 4 quarters, or 100 pennies, or 10 dimes, or 20 nickels

i don't know what ur asking sorryyyy

Step-by-step explanation:

8 0
3 years ago
Select the values that make the inequality - 4z &gt; - 28 true. Then write an
Olenka [21]

Answer:

vyxkgxgjxufxruzfjzfjzf

gxiggxifxifx

  1. xkzufxurzt
  2. izifxur
7 0
3 years ago
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