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
gogolik [260]
4 years ago
6

What is (3x-4) (7x+4)

Mathematics
2 answers:
d1i1m1o1n [39]4 years ago
7 0

Answer:21x^2-16x-16

Step-by-step explanation:

(3x)(7x)+(3x)(4)+(−4)(7x)+(−4)(4) =

21x^2+12x−28x−16

21x^2−16x−16

enot [183]4 years ago
6 0

Answer:

21x^2 -16x -16

Step-by-step explanation:

This is a basic multiplication question,

We all know that (a+b)(c+d)=ac+ad+bc+bd

Here,

a = 3x

b = -4

c = 7x

d = 4

Therefore,

3x*7x + 3x*4 + (-4)*7x + (-4)*4

=> 21x^2 +12x - 28x -16

=> 21x^2 -16x -16

You might be interested in
Please helpppppp meeeee!
yan [13]
B. 1 pint
2 cups = 1 pint
4 cups = 1 quart
16 cups = 1 gallon
hope this helps!
7 0
2 years ago
Read 2 more answers
2.8% of 45 is what number? <br><br>I need the percent equation, the proportion, and the solution
Talja [164]
The percent equation is
n=2.8%×45 or n=0.028×45. where n is the unknown number.
the proportion would be
n/45=2.8/100
the answer is 1.26
5 0
3 years ago
How many is 192 fl oz. = how many pints
NemiM [27]
There are 16 fluid ounces in a pint, so we have 192/16=12 pints.
6 0
3 years ago
Read 2 more answers
Pls hellpp! urgentt! please
Masja [62]

Answer:

Step-by-step explanation:

Perimeter of Square = 40 cm

4*side = 40

side = 40/4

side = 10 cm

Area of shaded region= Area of square - [Area of triangle 1 + Area of triangle 2]

=[side*side]-[\frac{1}{2}*b*h+\frac{1}{2}*b*h]\\\\=[10*10]-[\frac{1}2}*3*10+\frac{1}{2}*10*6]\\\\=100-[3*5+5*6]\\\\=100-[15+30]\\\\=100-45\\\\=55cm^{2}\\

Percentage = (55/100)*100=55%

6 0
3 years ago
Please use elimination<br> 3х - бу = 18<br> 2x + 2y = 6
Molodets [167]

Answer:

x = 4

Step-by-step explanation:

3x - 6y = 18

2x + 2y = 6 -> 3(2x + 2y = 6)

3x - 6y = 18 -> Cross out - 6y

6x + 6y = 18 -> Cross out + 6y

9x = 36 -> Divide 9 on both sides.

X = 4

8 0
3 years ago
Read 2 more answers
Other questions:
  • What are the ten times tables
    15·2 answers
  • Solve 8[7-(6x-6)]+6x=0.
    5·1 answer
  • R over 10 + 7 = 8<br> please help? two step equations
    13·2 answers
  • Don't have clue how to do this...
    13·1 answer
  • Your Co. collects 50% of its sales in the month of the sales, 30% of the follow month, and 20% the second month after the sale.
    5·2 answers
  • Which is an equivalent to to 752<br> O 1412<br> 021-10<br> 021-15
    15·2 answers
  • Mr. Williams can grade 50 essays in 7 hours. His assistant, Mr. Wilfred, can do the same job in 14 hours. His other assistant, M
    8·1 answer
  • ?????????????!!!!!!!!!
    15·2 answers
  • (2x + 4) — (-x + 5)<br> PLEASE HELP
    13·1 answer
  • if tom has 6 apple and he gave his mom 3 apple and and she made a apple pie how many apple are left. ​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!