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Lina20 [59]
3 years ago
7

Write an equation of the line perpendicular to x-2y=4 and contains the points (4,-5)

Mathematics
1 answer:
GREYUIT [131]3 years ago
8 0

y = − 2 x − 3

is the answer


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Which ratio represents 36%? <br> A. 3/8 <br> B. 9/25<br> C. 7/20<br> D. 11/30
Sladkaya [172]

Answer:  B. 9/25

Work Shown:

x% = x/100

36% = 36/100

36% = (9*4)/(25*4)

36% = 9/25

Using your calculator, you should find that 9/25 = 0.36 which converts to 36%, so that helps confirm the answer.

6 0
2 years ago
What is the value of 2²+5²​
BartSMP [9]

Answer:

29

Step-by-step explanation:

2^2 + 5^2

PEMDAS

Exponents first

4+25

Then add

29

3 0
2 years ago
And this is the last one i need done
quester [9]

Answer:

x=-2.5,9

Step-by-step explanation:

Set them equal to each other to say 2x^2-9x=4x+45. Get them all on one side to get 2x^2-13x-45. Factor that out to get (x+2.5)(x-9). Set that equal to 0 to get x=-2.5,9

5 0
3 years ago
Which number does NOT represent an integer? A. 3 B. 20.1 C. -10 D. 20/4​
guapka [62]

Answer:

the number doesnt represent an integer?

A. 3

B. 20.1

C. -10

D. 20/4​

Step-by-step explanation:

We call integers the “counting numbers, their negatives and zero”. I.e.  0,1,−1,2,−2,3,−3,.. etc.

non-integers means “everything except integers”. Which is not well-defined (i.e. nonsense). Why? Because nobody said what “everything” is.

Therefore, when somebody says “non-integer” he has to specify how he defines “everything”. In this case, our “everything” is probably “real numbers”.

Real numbers have an interesting definition concerning an abstract mathematical object called “field” . Let’s forget about that and let’s focus on a high school definition: Real numbers are probably all the numbers you know. They are those represented by a decimal and their negatives e.g.  345.232…  and  −243.13242240…  where there are “infinitely many” digits at the end. Note that  2.5  is also a real number. Integers are too. Basically, real numbers are the numbers used to measure distances and their negatives.

To summirize, your answer is the following:

“non integers” means everything except the integers, where everything is defined however we want. The most common definition of everything in this case is “real numbers” and therefore the most common interpretation of “non integers” is “reals which are not integers”.

Examples of “reals which are not integers”:  1.5,2.88,1.3333…  etc

the answer is

B. 20.1

6 0
2 years ago
What are the 2 shapes
uysha [10]
A stop sign shape i think

6 0
3 years ago
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