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3 years ago

After simplifying how many terms are there in the expression 2x-5y+3+x?

Mathematics

2 answers:

Vladimir79 [104]3 years ago

8 0

The x terms can be simplified so the answer is 3

user100 [1]3 years ago

5 0

First you must simplify the expression by adding like variables with numbers attached

2x + x - 5y + 3 = 3x - 5y + 3

3x - 5y + 3

3x is a term
-5y is a term
3 is a term

Therefore, there is 3 terms

A is your answer

hope this helps

(a term is a number, letter, number and letter, with a sign attached to it)

for example

10

-10

-10x

-10xy

-10xy^5

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A magician has a collection of 52 cards, with 26 red and 26 black cards. Four of these cards are classified as 'special', and tw

Brums [2.3K]

Answer:

option B (28/52)

Step-by-step explanation:

from probability

P(A∪B)=P(A)+P(B)-P(A∩B)

where

P(A∪B) = probability that event A or B happen

P(A∩B) = probability that event A and B happen simultaneously

P(A) = probability that event A happen

P(B) = probability that event B happen

the probability that the card is special or red

P( special or red)= P(special) + P(red) - P( special and red)

since

P(special)= 4/52

P(red) = 26/52

P( special and red) = 2/52

therefore

P( special or red)= 4/52 + 26/52 - 2/52 = 28/52

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(option B)

6 0

3 years ago

A quadratic equation is shown below:

Valentin [98]

Part A)

The given equation is:

$25 x^{2} +10x+1=0$

The radicand or discriminant(d) of the equation will be:

$d=(10)^{2}-4(25)(1) \\ \\ 
d=100-100 \\ \\ 
d=0$

Since the discriminant is equal to 0, the given quadratic equation has only 1 root. In other words we can say the the given equation is a perfect square.

Part B)

The given equation is:

$4 x^{2} -4x+1=0$

We can solve this expression by factorization. Factors of middle term are to be made in such a way that their product equals the product of first and third term and sum is equal to the middle term i.e. product should be 4x² and sum should be -4x.
So the two such terms are -2x and -2x. Using the factors and simplifying the equation by taking common we get:

$4 x^{2} -2x-2x+1=0 \\ \\ 
2x(2x-1)-1(2x-1)=0 \\ \\ 
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3 years ago

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PolarNik [594]

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r= 76÷(6×3.14)

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Area= 3.14×(12.10)^2

Area= 456.73cm^2

3 0

3 years ago

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pogonyaev

Answer:

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Choice A

Step-by-step explanation:

From the right-angled triangle we have been given the following;

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We are required to determine the length of the side, opposite the angle, marked x.

Using the Mnemonic; SOHCAHTOA

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Therefore;

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LenKa [72]

Answer:

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Hope that this helps!

6 0

3 years ago