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
adelina 88 [10]
3 years ago
7

Unit Test Unit 8 Correlation and Regression

Mathematics
1 answer:
crimeas [40]3 years ago
3 0

Answer:

the answer is the second choice

You might be interested in
Please help<br><br>numbers 42, 43, 44
Aleks [24]
<h3>Answer:</h3>

42.  29°

43.  3x³ +2x² -3x +10

44.  20a² +68a

<h3>Step-by-step explanation:</h3>

42.  The right-angle corner tells you the two marked angles are complementary — they sum to 90°.

  (-3x +20)° + (-2x +55)° = 90°

  -5x +75 = 90 . . . . . . . . . . collect terms, divide by °

  -5x = 15 . . . . . . . . . . . . . . . subtract 75

  x = -3 . . . . . divide by the coefficient of x

The angle of interest is (-3x+20)°. Filling in the found value for x, we have ...

  (-3·(-3) +20)° = 29° = m∠BDC

___

43.  The distributive property is useful for multiplying polynomials.

  (x +2)(3x² -4x +5) = x(3x² -4x +5) +2(3x² -4x +5)

  = 3x³ -4x² +5x +6x² -8x +10 . . . . . eliminate parentheses

  = 3x³ +2x² -3x +10

___

44.  Area is the product of length and width, so this becomes a problem in multiplying polynomials.

  area = (5a +17)(4a) = 20a² +68a . . . . area in square feet

3 0
3 years ago
Which graph shows the result of dilating this figure by a factor of 4 about the origin?
ipn [44]

Answer:

c

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Please help me on thiss
Hitman42 [59]

Answer:

-1.2

Step-by-step explanation:

3n + 5 = 1/2(11n + 16)

3n + 5 = 5.5n + 8

5 = 2.5n + 8

-3 = 2.5n

-3/2.5 = n

-1.2 = n

Hope this helps!

6 0
2 years ago
Read 2 more answers
Does anyone add me on hangout boys and girls anyone myself sahil from jharkhand class 9 ​
bazaltina [42]

Answer: Hm, this sounds a bit out of order I hope you use better grammar and please ask a question not  a comment

4 0
3 years ago
Alex sold 330 candy bars, milk chocolate candy bars sold for $2 each and white chocolate candy bars sold for $3 each. Alex sold
Alinara [238K]

Answer:

<em>Alex sold 330 white chocolate bars</em>

Step-by-step explanation:

let the milk chocolate candy be x and the white chocolate candy be y. then

then 2x+3y=990----1)

x+y=330-----2)

from eq 2) ⇒ x=330-y---------3)

Putting eq 3 in eq 1

2(330-y) +3y=990

660-2y+3y=990

y=990-660=330-----------4)

Putting eq4 in eq1

2x+3(330)=990

2x+990=990

2x=990-990

2x=0

x=0---------------------------5)

4 0
3 years ago
Other questions:
  • George ate 4 slices of pizza. If this was 25% of the slices at the dinner table, how many slices were at the table to start with
    10·1 answer
  • R^2+7r+10/3 / 3-30/r2-5r-50
    15·2 answers
  • If someone weighed 6 pounds 3 ounces and they gained 128 ounces how much did they gain
    13·1 answer
  • Find the volume of a cone with a base area 36pi and a height equal to twice the radius
    10·1 answer
  • A manager samples the receipts of every fifth person who goes through the line. Out of 50 people, 4 had a mispriced item. If 600
    6·1 answer
  • Which property is used to simplify the expression 1+(6+0)=1+6
    5·2 answers
  • If Larry bake 64 chocolate cupcake 88 vanilla cupcake he wants place them on small plates for a party what is the greatest numbe
    8·1 answer
  • Willie won 98 pieces of gum playing
    8·1 answer
  • How do you divide fractions?
    12·2 answers
  • Find the value of x.<br> 42°<br> (5x + 2)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!