1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Pachacha [2.7K]
3 years ago
11

Find the value of x. (5x+15) (6x-10)

Mathematics
2 answers:
Annette [7]3 years ago
7 0

Answer:

We get x = -5/3 and x = -3

Step-by-step explanation:

(5x+15) (6x-10)

Multiplying this and equating to zero, to find x.

30x^{2} -50x+90x-150=0

30x^{2} +40x-150=0

Factoring out 10.

3x^{2} +4x-15=0

3x^{2} +9x-5x-15=0

3x(x+3)-5(x+3)=0[tex](3x-5)(x+3)=0[/tex]

We get x = -5/3 and x = -3

Blizzard [7]3 years ago
4 0
(5x+15)(6x-10)
= 30x^2 + 30x - 50x - 150
= 30x^2 - 20x - 150
You might be interested in
Which of the following graphs best represents the solution to the pair of equations below? y = −2x + 2 y = 2x + 2 A coordinate p
mariarad [96]

Answer:

Step-by-step explanation:

Which of the following graphs best represents the solution to the pair of equations below? y = −x + 6 y = 2x − 3 A coordinate plane is shown with two lines graphed. One line passes through the y axis at 6 and through the x axis at 6. The other line passes through the y axis at negative 3 and the x axis at 1.5. The lines intersect at the point 3 comma 3. A coordinate plane is shown with two lines graphed. One line passes through the y axis at 6 and the x axis at 6. The other line passes through the y axis at 3 and the x axis at negative 1.5. The lines intersect at 1 comma 5. A coordinate plane is shown with two lines graphed. One line passes through the y axis at 6 and the x axis at negative 6. The other line passes through the y axis at negative 3 and the x axis at negative 1.5. The lines intersect at negative 3 and 3. A coordinate plane is shown with two lines graphed. One line passes through the y axis at 6 and the x axis at negative 6. The other line passes through the y axis at 3 and the x axis at 1.5. The lines intersect at negative 1 comma 5.

8 0
3 years ago
My answers are wrong plz help
lapo4ka [179]
I think a would be 115 degrees. B would be 71 degrees. I think the second question would be c.

5 0
3 years ago
Read 2 more answers
For the school play 40 rows of chairs are set up there are 22 chairs in each row how many chairs are there
liq [111]
If you had one row, you would have 22 chairs.

If you had two rows, you would have 22+22=44 chairs.

If you had three rows, you would have 22+22+22 chairs, or 66 chairs.

See the pattern?

If you had 40 rows, you would add 22 40 times, or 22*40=880 chairs.

Hope this helps!
6 0
3 years ago
Read 2 more answers
3. Marissa collected 8 seashells. Her sister Emily
eimsori [14]

Answer:

3

Step-by-step explanation:

There are 15 shells all together

there is 5 friends

15 divided by 5 is 3

Therefore  the answer is three

8 0
3 years ago
Read 2 more answers
Marcus and Jeremy both evaluated the expression −52 + 3. Marcus said the answer was −22. Jeremy said the answer was 28. Who is c
Artyom0805 [142]

Answer:

Alright, the answer to the equation -52+3= -49

Step-by-step explanation:

I don't know how the heck Marcus and Jeremy got -22 and 28 but both are wrong. If there were a picture so I could see their work, I would be able to figure it out.

Anyways, The math is:

-52 + 3 which is pretty much 52-3 and then the answer has a negative sign.

-52 goes up 3 because technically the negative sign is down. Counting up 3 from 52 equals -49.

6 0
3 years ago
Read 2 more answers
Other questions:
  • Find the value of x
    10·1 answer
  • What is the average rate of change of f(x), represented by the graph, over the interval
    15·2 answers
  • 5 times a number increased by 18 is the same as 36 more than times 4 times the number. Find the number
    7·1 answer
  • Let A be a 5 × 4 matrix with a pivot in each column. Is A invertible? Why or why not?
    15·1 answer
  • The areas of 10 cities are given in the table.
    14·2 answers
  • WILL MARK BRAINLIEST
    12·1 answer
  • Bakery can make 8 cheesecakes for every 1 block of cream cheese which table represents the relationship between the number of ch
    12·1 answer
  • Pls help with this problem!
    15·1 answer
  • 2 1/3⋅3 1/2 i need to KNOW NOW!!!!
    7·1 answer
  • A playground is rectangular with a length of 78 miles. If the area of the playground is 820 square miles, what is its width? Inp
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!