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
lidiya [134]
3 years ago
13

Multiply: (3x + 7)(5x2 − 3x + 6) A) 15x3 + 26x2 − 39x + 42 B) 15x3 + 26x2 + 3x + 42 C) 15x3 − 44x2 − 3x + 42 D) 15x3 + 26x2 − 3x

+ 42
Mathematics
2 answers:
GREYUIT [131]3 years ago
6 0

Answer:

15x^3+26x^2-3x+42

Step-by-step explanation:

Multiply (3x + 7)(5x^2 - 3x + 6)

To multiply two parenthesis , we first multiply 3x inside the second parenthesis and then we multiply 7 inside the second parenthesis

(3x)(5x^2 - 3x + 6)=15x^3-9x^2+18x

Now multiply 7 inside the second parenthesis

(7)(5x^2 - 3x + 6)=35x^2-21x+42

Now we add both the answers we got

15x^3-9x^2+18x + 35x^2-21x+42

Lets combine like terms

15x^3+26x^2-3x+42

adell [148]3 years ago
4 0

Answer:

38.5

Step-by-step explanation:

Lets say, first number = x



Second number = 3x+7



Total = 49




(x)+(3x+7)= 49



4x+7 = 49



4x = 42



x = 42/4



x= 10.5




x= 10.5



3x+7 = 3(10.5)+7 = 38.5




Hope this helps!!

You might be interested in
Sal is participating in a charity walk. The distance Sal walks, in kilometers, is proportional to the number of hours he spends
vredina [299]

the attachment is not clear dude...

5 0
2 years ago
Anyone know of some good books to read?
goblinko [34]
Red Queen, Throne of glass, Scythe, and I am number four! Those are some of my favorites!
4 0
2 years ago
Read 2 more answers
Solve for d in terms of r
Zarrin [17]

Hello!

Answer:

d=2r

Step-by-step explanation:

Simplify both sides and isolate the variable.

Hope this helps!

5 0
2 years ago
Read 2 more answers
If x+3/3 = y+2/ 2 , then x/3 = _____.​
iren [92.7K]

the question is not so clear

is it (x+3)/3 or what you have written is correct

Step-by-step explanation:

4 0
3 years ago
81.08% of 37 hours<br> (Answer in minutes please)
Fofino [41]
It would be: 37 × 0.8108 = 30 hours (approx.)

Now, we know, 1 hour = 60 min.
so, 30 hours = 60 × 30 = 1800 min.

In short, Your Answer would be 1800 min

Hope this helps!
6 0
3 years ago
Read 2 more answers
Other questions:
  • A ball is thrown from a height of 70 meters with an initial downward velocity of 10/ms. The ball's height h (in meters) after t
    13·1 answer
  • Simplify this expression. If it is already simplified, then write it as it is.<br> 2p – 2 – 9 - 9p
    11·1 answer
  • Which property is represented by the equation below?
    5·2 answers
  • Find the product. -mnp(3m - 5n 7p)
    15·2 answers
  • Mr Patel is planning to drive 325 miles. He will stop one hour for lunch and take a 15 min rest break.
    10·1 answer
  • What is the value of 1/2 x power of 3 + 5.3y, when x = 2 and y = 3? (1 point)
    7·2 answers
  • In a class of 7, there 4 syudents who play soccer. If the teacher chooses 3 students, what is the probability that none of the t
    12·1 answer
  • Please help me I forgot this subject
    14·1 answer
  • A cell phone company charges a monthly fee of $18 plus five cents for each call. A
    12·1 answer
  • Maurice has completed 72 pages of the research paper he is writing. That is 90% of the required length of the paper. What is the
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!