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Elena L [17]
3 years ago
5

Which is the correct answer ? please help !

Mathematics
2 answers:
Sindrei [870]3 years ago
5 0

Answer: A

Step-by-step explanation: 2(−3k−5) = (2)(−3k+−5) = (2)(−3k)+(2)(−5) = −6k−10

Anni [7]3 years ago
4 0
I’ve been needing help with this also
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Find the value of the unknown angle X.
kupik [55]

Answer:

x = 130^{o}

Step-by-step explanation:

The given figure is a trapezium which is a quadrilateral with four sides.

But,

Sum of angles in a quadrilateral = (n - 2) x 180

where n is the number of sides.

For a quadrilateral, n = 4. So that,

Sum of angles in a quadrilateral = (4 - 2) x 180

                             = 2 x 180

                             = 360^{o}

The sum of angles in a quadrilateral is 360^{o}.

Thus,

158^{o} + 51^{o} + x^{o} + 21^{o} = 360^{o}

x^{o} + 230^{o} = 360^{o}

x^{o} = 360^{o} - 230^{o}

   = 130^{o}

The value of x is 130^{o}.

7 0
3 years ago
Zeroes of polynomial p(x)=2x^2-9-3x are :​
Tju [1.3M]

Answer:

x = - \frac{3}{2}, x = 3

Step-by-step explanation:

To find the zeros let p(x) = 0 , that is

2x² - 3x - 9 = 0

Consider the factors of the product of the x² term and the constant term which sum to give the coefficient of the x- term.

product = 2 × - 9 = - 18 and sum = - 3

The factors are - 6 and + 3

Use these factors to split the x- term

2x² - 6x + 3x - 9 = 0 ( factor the first/second and third/fourth terms)

2x(x - 3) + 3(x - 3) = 0 ← factor out (x - 3) from each term

(x - 3)(2x + 3) = 0

Equate each factor to zero and solve for x

2x + 3 = 0 ⇒ 2x = - 3 ⇒ x = - \frac{3}{2}

x - 3 = 0 ⇒ x = 3

4 0
3 years ago
True or False, ∠XZY and ∠PZQ are vertical angles, then ∠XZY≅∠PZQ
Natasha_Volkova [10]

Answer:

True

Step-by-step explanation:

If ∠XZY and ∠PZQ are vertical angles,

then ∠XZY≅∠PZQ

(vertical angles are congruent)

3 0
3 years ago
Admission for a movie is $8 for children and $12 for adults. On a certain day, 3200 people attend the movie theater and $33,040
Nezavi [6.7K]
Let us assume the number of children attending the movie = x
Let us also assume the number of adults attending the movie = y
Cost of admission for a children in the movie = $8
Cost of admission of an adult in the movie = $12
Number of people going to the movie on a certain day = 3200
Total amount collected from the movie theater = $33040
Then
x + y = 3200
And
8x + 12y = 33040
2x + 3y = 8260
Let us first take the equation
x + y = 3200
x = 3200 - y
Now we will put the value of x in the equation
2x + 3y = 8260
2(3200 - y) + 3y = 8260
6400 - 2y + 3y = 8260
y = 8260 - 6400
   = 1860
Now we will put the value of y from the above deduction in the equation
x + y = 3200
x + 1860 = 3200
x = 3200 - 1860
   = 1340
So the number of children going to the movie theater is 1340 and the number of adults going to the movie theater is 1860.
5 0
3 years ago
Translate the following sentence into an inequality: Twice a number plus
White raven [17]

Answer:

hey your really cute thats all

Step-by-step explanation:

;) love you bubs see you someday, now

8 0
3 years ago
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