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
stich3 [128]
3 years ago
12

Combine like terms: 2y^2 + 2(4y^2 − 3)

Mathematics
1 answer:
nadya68 [22]3 years ago
8 0

Answer:

10y^2-6

Step-by-step explanation:

2y^2=2(4y^2-3)

2x4y^2=8y^2

2x(-3)=(-6)


2y^2+8y^2-6

10y^2-6

You might be interested in
Describe the rule of continuing this sequence 44, 41, 38, 35, 32
Citrus2011 [14]

Answer:

aₙ= 47 -3n

Step-by-step explanation:

44, 41, 38, 35, 32

This is AP with 1st term of 44 and common difference of -3

nth term of this AP:

  • aₙ= a₁+(n-1)d= 44+(n-1)*(-3)= 44 - 3n+3= 47-3n
  • aₙ= 47 -3n
4 0
3 years ago
Vivian surveyed bicyclists in her community to see the average number of miles they biked per day. Her results are shown below.
Alex

Answer:

MAD of her data set is 4.

Step-by-step explanation:

Vivian surveyed bicyclists in her community to see the average number of miles they biked per day.

The data set is given below :

7, 10, 13, 4, 12, 21, 10, 3

mean=\frac{\text{Sum of data set}}{\text{number of values}}

=\frac{(7+10+13+4+12+21+10+3)}{8}

=\frac{80}{8}

= 10

MAD=\frac{\sum |A_1-f_1|}{n}

              Data point          Distance from mean

                                             

1                  7                           7 - 10   =     | -3 |     = 3

2.                10                         10 - 10  =     | 0 |       = 0

3.                13                          13 - 10  =     | 3 |     = 3

4.                4                           4 - 10    =    | -6 |    = 6

5.               12                          12 - 10   =    | 2 |     = 2

6.               21                          21 - 10   =    | 11 |   = 11

7.               10                          10 - 10   =    | 0 |     = 0

8.               3                            3 - 10   =    | -7 |   = 7

                                               

Adding the distance = 3 + 0 + 3 + 6 + 2 + 11 + 0 + 7 = 32

MAD = \frac{32}{8} = 4

MAD of her data set is 4.

Mean Absolute Deviation of this data tells about the variation of 4 miles biked each day by the bicyclists.

6 0
3 years ago
Simplify completely: the quantity 8 times x to the third power plus 6 times x to the 2nd power minus 4 times x all over negative
True [87]
The answer is <span>a.−4x^2 − 3x + 2
</span>
the quantity 8 times x to the third power plus 6 times x to the 2nd power minus 4 times x all over negative 2 times x is: \frac{8 x^{3}+6 x^{2} -4x }{-2x}

\frac{8 x^{3}+6 x^{2} -4x }{-2x} =  -\frac{8 x^{3}+6 x^{2} -4x }{2x}=- \frac{2x*4 x^{2} +2x*3x-2x*2}{2x} =- \frac{2x(4x^{2} +3x-2)}{2x} = \\  \\ =-(4x^{2} +3x-2)=-4x^{2} -3x+2
7 0
4 years ago
Please help me with 1a, thanks
valkas [14]

Since 1A claims that the diagram is of a square, you can easily find the perimeter by multiplying just one side by 4, because the definition of a square says that all of its four sides are equal in length.

Take the left side, x and 4, and add them together, because both of these lengths add up to form the side of the square. You have found one side of the square, x + 4. Now multiply this side by 4 for the perimeter.

Perimeter is the length all around the figure, and since a square has 4 sides you would multiply one side by 4 to find the perimeter.

4(x + 4) is your expression for the perimeter of the square. You could probably solve 1B and 1C by substituting in 3 and 5 for x in the equation I've given you :)

8 0
3 years ago
Read 2 more answers
HELP FIRST GETS BRAINLLEST A dartboard has 20 equally divided wedges, and you are awarded the number of points in the section yo
VMariaS [17]

Answer:

Step-by-step explanation:

well sense there are only 4 numbers that are higher then 15 the ratio would be 4:20 or 1:5 which is a 20% probability

5 0
3 years ago
Other questions:
  • Which comparison statement is true? A: 729,853 &gt; 729,799 B: 729, 853&lt; 729,800 C: 729,853&gt;729,,853 D: 729,849
    13·1 answer
  • Y=2x/a+2b solve for a
    5·1 answer
  • An annuity immediate has a first payment of 200 and increases by 100 each year until payments reach 600. there are 5 further pay
    13·1 answer
  • An ice-cream truck sells milkshakes for $3.50 and cones for $2. On Wednesday, a total of 45 milkshakes and cones were sold, and
    10·1 answer
  • Explain why you cannot evaluate √−25 using real numbers.
    10·1 answer
  • (ANSWER ASAP 99 POINTS) Julianne opens a dance studio. Her start up costs for the building, advertising, and supplies total $52,
    7·1 answer
  • In the past year, Hans watched 38 movies that he thought were very good. He watched 95 movies over the whole year. Of
    6·1 answer
  • Leah is purchasing a condominium and is financing $515,000 with a 20-year 5/1 ARM at 5.25% with a 1/12 cap structure. What will
    6·1 answer
  • Casey wants to buy a gym membership. One gym has a $70 joining fee and cost $35 per month. Another Jim has no joining fee and co
    5·1 answer
  • Which statement represents the expression?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!