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
fomenos
3 years ago
15

Please helpnumbers 42, 43, 44

Mathematics
1 answer:
Aleks [24]3 years ago
3 0
<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

You might be interested in
Help help please please
gtnhenbr [62]

✽ Hello there! ✽

4x+9<21  

Move all the constants (numbers) to the right, using the opposite                         operation:

4x<21-9

4x<12

Divide both sides by 4 to isolate x:

x<3

<h2>Therefore, x<3 ✔︎</h2>

Hope this helps!

~Just a felicitous girlie

#HaveASplendidDay

SilentNature

8 0
2 years ago
Draw the graph of the equation:<br><br> 2x-y=6
DochEvi [55]
Hope this helps!, I have to have more than 20 characters so ignore this!

7 0
3 years ago
Which ordered pairs are in the solution set of the system of linear inequalities?
Nataly [62]

Answer:

C

Step-by-step explanation:

The solution to the system of the inequalities lies in the shaded region between the 2 lines.

The ordered pairs (5, - 2), (3, 1), (4, 2) lie within this region ⇒ C

8 0
3 years ago
Is this table proportional?<br> XY<br> 1 3 3<br> 4 12<br> 5 15<br> 7 21
mixas84 [53]
Yes it is proportional for a table
8 0
2 years ago
Multiplos de 5 maiores que 75
enot [183]
Hey there!

Here is your answer:

The proper answer to this question (look below)

Reason:

First translate the problem into English:

<span><u>Multiples of 5 greater than 75:</u>

</span><span><u>80, 85, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 155, 160, 165, 170, 175, 180, 185, 190, 195, 200, 205, 210, 215, 220, 225, 230, 235, 240, 245, 250, 255, 260, 265, 270, 275, 280, 285, 290, 295, 300, 305, 310, 315, 320, 325, 330, 335, 340, 345, 350, 355, 360, 365, 370, 375, 380, 385, 390, 395, 400, 405, 410, 415, 420, 425, 430, 435, 440, 445, 450, 455, 460, 465, 470, 475, 480, 485, 490, 495, 500, 505, 510, 515, 520, 525, 530, 535, 540, 545, 550, 555, 560, 565, 570, 575</u></span><u />

<span>All of these numbers above are multiples </span><span>of 5 greater than 75!

If you need anymore help feel free to ask me!

Hope this helps!

~Nonportrit</span>
3 0
2 years ago
Other questions:
  • Which of the following is the multiplicative inverse of 2x?<br> 1/2 X<br> -1/2 X<br> -2x<br> 2x
    15·1 answer
  • 1. Determine the zeros of f(x) = x3 – 3x2 – 16x + 48? Somebody explain it please?:/
    7·1 answer
  • What is the equation (simplified) the inverse of y=2x^2?
    11·1 answer
  • What is p^m ⋅ p^n equal to? p^m − n p^m + n p^m ⋅ n p^m ÷ n. please show work
    10·1 answer
  • The sum of the measures of the angles of a triangle is 180. The sum of the measures of the second and third angles is five times
    11·1 answer
  • You can raise $48 walking a mile. What is the rate of raising money
    10·2 answers
  • There is a line that includes the point (-5, 2) and has a slope of -3. What is its equation in slope-intercept form?
    6·2 answers
  • Mr. Dixon is ordering pizzas and breadsticks for a school pizza party and has a budget of $76,
    12·1 answer
  • Please help and thanks!~<br> ~~~~~~~~~~~~~~~~~~~~~~~<br> 20 points!~
    6·1 answer
  • Please help!!!!!!!!!!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!