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timofeeve [1]
2 years ago
12

(x + 1) (2x - 5) = 0

Mathematics
1 answer:
Marianna [84]2 years ago
3 0
X=-1 (negative one)



(i need this part to post the answer so just ignore it lol)
You might be interested in
Becky put some stamps into our stamp collection book she put 14 stamps on each page and she completely filled 16 pages how many
joja [24]

Answer:

Becky put 224 stamps on the stamp collection book

Step-by-step explanation:

We know that Becky put 14 stamps on each page and she did it on 16 pages.

To find out how many stamps were in the entire stamp collection book, we have to multiply the number of stamps on each page by the number of pages

14 * 16 = 224

Becky put 224 stamps on the stamp collection book

6 0
3 years ago
Consider the proof for the identity csc(x)+sin(x)=(2-cos^(2)(x))/(sin(x)).
spin [16.1K]

1. given:

csc(x) + sin(x)

2. definition of csc(x) :

1/sin(x) + sin(x)

3. combining fractions with a common denominator:

(1 + sin²(x))/sin(x)

4. expanding 1 = cos²(x) + sin²(x) :

(cos²(x) + sin²(x) + sin²(x))/sin(x)

5. simplifying:

(2 sin²(x) + cos²(x))/sin(x)

6. employing the same identity as in (4) :

(2 (1 - cos²(x)) + cos²(x))/sin(x)

7. expanding 2 (1 - cos²(x)) :

(2 - 2 cos²(x) + cos²(x))/sin(x)

8. simplifying:

(2 - cos²(x))/sin(x)

8 0
2 years ago
2+15+12+85+666+123*322158%5556
bonufazy [111]
The answer for this question is 822
5 0
2 years ago
Am stuck on this question and show your working please.
Tamiku [17]

Answer:

1. 6pi or 18.84cm

2. 20pi or 62.8cm

3. 13pi or 40.82cm

4. 9.5pi or 29.83cm

5. You calculate the circumference of a circle with the expression 2pi(r). r stands for the radius. You can also use pi(d), or pi x diameter.

7. You would use 2pi(r) to find the circumference of a circle when given the value of the circle's radius.

8. You would use pi(d) to find the circumference of a circle when given the value of the circle's diameter.

5 0
3 years ago
Factor completely 2x3 + x2 - 18x - 9
melisa1 [442]
Factor the following:
2 x^3 + x^2 - 18 x - 9

Factor terms by grouping. 2 x^3 + x^2 - 18 x - 9 = (2 x^3 + x^2) + (-18 x - 9) = x^2 (2 x + 1) - 9 (2 x + 1):
x^2 (2 x + 1) - 9 (2 x + 1)

Factor 2 x + 1 from x^2 (2 x + 1) - 9 (2 x + 1):
(2 x + 1) (x^2 - 9)

x^2 - 9 = x^2 - 3^2:
(2 x + 1) (x^2 - 3^2)

Factor the difference of two squares. x^2 - 3^2 = (x - 3) (x + 3):

Answer:  (x - 3) (x + 3) (2 x + 1) thus the Answer is C.
7 0
3 years ago
Read 2 more answers
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