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
natita [175]
3 years ago
5

Check my Work: Factoring for 2y^+9y-18 is (2y-3) (y+6) true or false?

Mathematics
1 answer:
Alexxandr [17]3 years ago
7 0

It is true because when you separate 2y^2 +9y -18, you are supposed to get the factors (2y-3)(y+6), when you multiply this it gives you the first equation, we know this because when we multiply the first term it gives us exactly 2y^2 and if we multiply the last ones it gives you -18, now here is the tricky part, when we multiply the middle part we get 12y and -3y, when we add these up we get 9y, now is that the same middle as in the equation? Yes… then our factors are correct making this true


Hope this helps

You might be interested in
Help plsss!!!
Kisachek [45]

Answer:

A and C

Step-by-step explanation:

4 0
3 years ago
∠ABD and ∠BDE are supplementary. Find the measures of both angles.
Gnom [1K]

Supplementary means that the angles have to add up to 180, so you have your equation.

180=5x+17x-18

198=22x

x=9

Then to find the measures of the angles, you plug x back in.

m∠ABD=5(9)=45 degrees

m∠BDE=17(9)-18=153-18=135 degrees  


5 0
3 years ago
Without actually writing the formula, explain how to expand (x + 3)7 using the binomial theorem.
Lyrx [107]

To write the coefficients of the 8 terms, either start with a combination of 7 things taken 0 at a time and continue to 7 things taken 7 at a time or use the 7th row of Pascal’s triangle.

For the first term, write x to the 7th power and 3 to the 0 power. Then decrease the power on x and increase the power on y until you reach x to the 0 and y to the 7.

Simplify by evaluating the coefficients and powers 3

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
for a store contest 4 out of every 65 people who visit the store witll get a free dvd if 455 people went how many dvd's were giv
velikii [3]
I think 7 455÷65=7 and 65×7=455
5 0
3 years ago
Y= -3(x-3)^2+4 identify the axis of symmetry.
Julli [10]

Answer:

The equation of the axis of symmetry is x = 3

Step-by-step explanation:

Perform the indicated mult., obtaining:

y = 3(x² - 6x + 9) + 4.

Mult. each term inside parentheses by 3, we get:

y = 3x² - 18x + 27 + 4, or

y + 3x² - 18x + 31

Here the coefficients are a = 3, b = -18 and c = 31.

The axis of symmetry is x = -b / (2a), which here is:

      -(-18)

x = ----------- = 18/6 = 3

       2(3)

The equation of the axis of symmetry is x = 3

6 0
3 years ago
Read 2 more answers
Other questions:
  • Height of a table tennis net: 6 in. height of a tennis net: 3ft
    14·1 answer
  • Select the correct answer.
    8·2 answers
  • What is the equation, in point-slope form, of the line that is perpendicular to the given line and passes through the point (2,
    14·2 answers
  • Patrick built a robot that is 0.8 meters tall. Adelaide built a robot that is 2 feet and 9 inches tall. Who has the taller robot
    10·1 answer
  • #37 I need help with. best answer plz???
    5·1 answer
  • Write an expression that equals 40 include an exponent
    8·1 answer
  • In the quadratic formula,
    8·1 answer
  • Whats 5.58 + 0.712??
    13·2 answers
  • Plzzzz can I get help plzzz
    12·1 answer
  • 5.) Tiffany is building a model of her bedroom. She is using a scale factor of 1 foot in her room to 0.5 inch in the model. if h
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!