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
Which statement about rhombuses and parallelograms is true?
puteri [66]

Answer:

Parallelograms ALWAYS have opposite sides parallel; rhombuses sometimes do not.

Step-by-step explanation:

i think

4 0
3 years ago
Explain how you can use a basic subtraction fact to help you solve 98-30.
solniwko [45]
You do what I’d 9-3 , 8-0 , then combined it and you will get the right answer
6 0
3 years ago
Find equivalent ways to rewrite the expression 6a^8÷3a^4​
solong [7]

Answer:

6a^8/3a^4= (6/3)= 2

a^8/a^4= a^4

2a^4

(6/3)(a^8/a^4)= 2a^4

(6/3)(a^(8-4))= 2a^4

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Which shows the most reasonable way to estimate 3 and StartFraction 4 over 7 EndFraction (Negative 2 and StartFraction 1 over 12
geniusboy [140]

Answer:

it's b

Step-by-step explanation:

7 0
1 year ago
12 – 2x= -2(y – x)<br> -2x = -2(y – x) – 12<br> x= (y - x) + 6
Vilka [71]

Answer:

x=o and y= -6

Step-by-step explanation:

12-2x = - 2(y-x)

or,12-2x = -2y + 2x

or, 12 = - 2y + 4x

or, 12/2= 2x - y

or, 2x - y = 6

• 2x -6= y.....eqn_1

-2x=-2y+2x -12

or,4x +2y= -12

or,4x + 2(2x-6)= -12

or, 4x+4x-12=-12

or, 8x= 0

• x= o

putting the value of x in eqn...3

o=(y-0)+6

or, o= y + 6

•y = -6

5 0
3 years ago
Other questions:
  • What is true about the solution of StartFraction x squared Over 2 x minus 6 EndFraction = StartFraction 9 Over 6 x minus 18 EndF
    15·2 answers
  • What is the y-intercept of the quadratic function<br> fb) = (x-6)(x - 2)?
    8·1 answer
  • Theos mom bought an eight pack of juice boxes for 4 dollars find the unit rate
    11·1 answer
  • PLEASE HELP!
    10·2 answers
  • Please help :( I suck at math and this question that wants more then one answer :(
    6·1 answer
  • I need help with this can someone please help me
    5·1 answer
  • Sociologists have found that information spreads among a population at an exponential rate. Suppose that the function y=525 (1 -
    5·1 answer
  • How do you subtract and add integers
    11·2 answers
  • J<br>— + 7 = -12<br>-2<br><br>what is the answer​
    6·2 answers
  • Hi brainly people, help me please lawl
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!