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
klio [65]
3 years ago
14

Percy solved the equation x2 + 7x + 12 = 12. His work is shown below. Is Percy correct? Explain. 1. (x + 3)(x + 4) = 12 2. x + 3

= 12 or x + 4 = 12
Mathematics
1 answer:
kvasek [131]3 years ago
4 0

Answer:

{x +4} {x+3} =0

Step-by-step explanation:

The equation is given as :

x² + 7x + 12 =0

Find multiples of 12 that can add to give +12 ------3 * 4

The equation can then be written as;

x² + 3x + 4x + 12 = 0  ------factorize

x{ x + 3 } + 4 { x +3 } = 0

{x+4 } {x + 3} = 0

Answer : {x +4} {x+3} =0

You might be interested in
Jake plans to use a ramp to make it easier to move a piano out of the back of his truck. The back of the truck is 83 centimeters
storchak [24]

Answer:

134.4 centimeters

Step-by-step explanation:

This question is asking us for a missing leg on the triangle, lets call it x. Using the Pythagorean theorem (a²+b²=c²), we can figure out what value is missing (either a or b, they are interchangeable).

replace the values in the equation.

83²+x²=158²

get rid of the exponents.

6,889+ x² = 24,964.

subtract 6,889 from 24,964.

x²=18,075.

find the square root on both sides of the equation.

x=134.4432966.

I am assuming you want this rounded to the nearest tenth.

134.4 is your answer.

Read more on Brainly.com - brainly.com/question/14113423#readmore

8 0
4 years ago
An electrician charges $130 for a house call and $90 for each hour of work. How much will they charge for 7 hours of
babymother [125]

Answer:

Hope it helps

Step-by-step explanation:

Electricians usually charge between $50 to $100 per hour. For the entire project, you'll spend an average of $323, or within a range between $160 and $508 or more. Both hourly and project rates vary depending on the type of project, license and experience of the service provider.

4 0
3 years ago
Read 2 more answers
Charles owed $390 to his friend. On the first day Charles paid his friend $12. Each following week the amount Charles paid his f
tensa zangetsu [6.8K]
Hello! Ok, so this is the formula x10 + 12 = 390 =
x10 + 12 - 12 = 390 - 12 = 378 =
x10 = 378 =
x10 / 10 = 378 / 10 =
x = 37.80$
He paid 37.80$ per payment



6 0
4 years ago
Sam bought an $85.00 jacket for 40% off of the regular price. He also has to pay 5% for tax. How much did he pay for the jacket
Nadusha1986 [10]
55.25. You multiply 0.40 by 85 and you’ll get 34, subtract 85 by 34 and you’ll get 51. Then you multiply 0.05 by 85 and get 4.25. Add 4.25 by 51 and you’ll get 55.25.

5 0
3 years ago
What is the x coordinate of B after a dilation with the scale factor of 3.9? (Original coordinate of B is (-2,1)
Natali5045456 [20]

Answer:

that's a good question that's why I will tell you ask your teacher

7 0
3 years ago
Other questions:
  • How do you do this question?
    15·2 answers
  • A French teacher was interested in determining if a foreign language computer program could help students learn better. She deci
    6·1 answer
  • Which ordered pair makes both inequalities true?
    8·2 answers
  • Please help if you have time I don’t want to be annoying
    7·2 answers
  • Please answer this correctly
    14·2 answers
  • Please guyssssssssssss
    15·1 answer
  • The relationship between temperature in Celsius and Fahrenheit is linear. Water freezes at 0 ° C or 32 ° F and water boils at 10
    14·1 answer
  • Find the circumference of the object 6 Cm
    15·1 answer
  • Someone help me with this if you can
    15·1 answer
  • James is saving 5p and 10p coins. He has 75 coins. The ratio of the 5pto the 10p coins is 1 : 1.5. How much are his coins.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!