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pentagon [3]
4 years ago
8

Solve 3x2 + 6x = 8.

Mathematics
2 answers:
-Dominant- [34]4 years ago
8 0

Answer:

The quantity of negative 1 plus or minus square root 33 all over 3

Step-by-step explanation:

3x2+6x=8

3x^2+6x-8=0

Quadratic formula

x=-b +or-√b^2-4ac/2a

a=3

b=6

c=-8

x=-b +or-√b^2-4ac/2a

=-6 +or- √(6)^2 - 4*3*-8/2*3

=-6 +or- √36-(-96)/6

=-6 +or-√36+96/132

=-6 +or- √132/6

=-6 +or- 2√33/6

=-6/6 +or- 2√33/6

= -1 +or- √33/3

The quantity of negative 1 plus or minus square root 33 all over 3

Katyanochek1 [597]4 years ago
6 0

Answer: C

quantity of -3 +/- square root 33 all over 3

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In a class of so students, 35 like to play cricket
bonufazy [111]

Answer:

10

Step-by-step explanation:

Given that:

Total number of students = 50

Students who like to play football = 25

n(A) = 25

Students who like to play cricket = 35

n(B) = 35

Each student likes to play at least one game.

It means the universal set is equal to the union of the above two sets.

n(U) =n(A\cup B) = 50

To find:

The number of students who play both the games and representation of the given situation in the form of a Venn diagram.

i.e. n(A\cap B) = ?

Solution:

First of all, let us have a look at the formula for the number of elements in the union of two sets.

n(A\cup B)=n(A)+n(B)-n(A\cap B)

Putting the values in the formula, we need to find the value of n(A\cap B)

50=25+35-n(A\cap B)\\\Rightarrow 50-60=-n(A\cap B)\\\Rightarrow n(A\cap B)=\bold{10}

Therefore, the number of students who like to play both the games is <em>10</em>.

5 0
3 years ago
Can you help me PLEASE I am trying to solve this problem but it makes no sense.
Sladkaya [172]
UNKNOWN BECAUSE THER IS NO PROBLEM LOL LMAOOO :)
5 0
3 years ago
Evaluate x(–y + z) for x = –1, y = 2, and z = 5.<br><br><br> 7<br><br> 3<br><br> –3<br><br> –7
Jlenok [28]

Answer:

-3

Step-by-step explanation:

-1(-2+5)

-1 multiplied by (-2+5)

+2-5

=-3

Hope this helped!

4 0
3 years ago
Ashots height changed from 150 cm to 165 cm during the last year. By what percent did Ashot become taller?
Kitty [74]

150 cm ......... 100 %

165 cm ...............x %

x = 165×100/150 = 16500/150 = 110 %

4 0
3 years ago
Read 2 more answers
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rewona [7]
8.4•10^12
8.4 times 10 to the 12th power
5 0
3 years ago
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