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
Wittaler [7]
2 years ago
13

Shana used a table to multiply the polynomials 2x + y and 5x – y + 3. Her work is shown below.

Mathematics
2 answers:
Hatshy [7]2 years ago
7 0

Answer:

-2y, -2xy

Step-by-step explanation:

dig bick

Agata [3.3K]2 years ago
4 0

Answer:

-2y, -2xy

Step-by-step explanation:

got it correct on the assignment :)

You might be interested in
14 POINTS ASAP WHAT IS THE MEASURE OF ANGLE A
sashaice [31]
Wow...we have lots of numbers to go through.  we know that a 6 sided figure is a hexagon and the interior angles add up to be 720°. so.....

∠A + ∠B + ∠ C + ∠D + ∠E + ∠F = 720°
(x - 60) + (x - 40) + 130 + 120 + 110 + (x - 20) = 720
3x + 240 = 720      (combined all like terms)
3x = 480                (subtracted 240 from both sides)
x = 160                  (divided both sides by 3)

put the value of x into ∠A  (x - 60) = 160 - 60 = 100

∠A = 100°
7 0
3 years ago
How would you solve these 2 maths problems?
sweet-ann [11.9K]

Answer:

see explanation

Step-by-step explanation:

(9)

Expand and simplify right side and compare coefficients of like terms on left side.

(x - 2)(x² + ax + b) + c

= x³ + ax² + bx - 2x² - 2ax - 2b + c

= x³ + x²(a - 2) + x(b - 2a) - 2b + c

compare with

x³ + 2x² - 3x + 4

x² terms

a - 2 = 2 ( add 2 to both sides )

a = 4

x terms

b - 2a = - 3 ← substitute a = 4

b - 8 = - 3 ( add 8 to both sides )

b = 5

constant terms

- 2b + c = 4 ← substitute b = 5

- 10 + c = 4 ( add 10 to both sides )

c = 14

Thus a = 4, b = 5 and c = 14

-------------------------------------------------

(10)

Since both functions cross the x- axis at - 2 then (- 2, 0) satisfies both, that is

f(- 2) = (-2)^{4} + a(- 2)³ + b(- 2)² + 36(- 2) + 144 = 0, that is

- 16 - 8a + 4b - 72 + 144 = 0

- 8a + 4b + 56 = 0

- 8a + 4b = - 56 → (1)

and

g(- 2) = (-2)^{4} + (a + 3)(- 2)³ - 23(- 2)² + (b + 10)(- 2) + 40 = 0, that is

- 16 - 8(a + 3) - 92 - 2(b + 10) + 40 = 0

- 16 - 8a - 24 - 92 - 2b - 20 + 40 = 0

- 8a - 2b - 112 = 0

- 8a - 2b = 112 → (2)

Subtract (1) from (2) term by term

- 6b = 168 ( divide both sides by - 6 )

b = - 28

Substitute b = - 28 into (2)

- 8a + 56 = 112 ( subtract 56 from both sides )

- 8a = 56 ( divide both sides by - 8 )

a = - 7

Thus a = - 7 and b = - 28

5 0
3 years ago
How do you do estimate of percent problems?
vovangra [49]
How ever many times it goes into 100
4 0
3 years ago
Simplify.<br>(+18)%(-6)​
Arisa [49]

Answer: -3

Step-by-step explanation:

18/6 = 3

18/-6 = -3

6 0
3 years ago
What is 0.8% of 35 plz help
ANEK [815]

Answer:

0.28

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Other questions:
  • What is 8/10 x 8/21
    12·2 answers
  • Dan has 4 over 5 cup of ice cream. How many 1 over 8 -cup servings are in 4 over 5 cup of ice cream?
    15·1 answer
  • Someone please help me
    13·1 answer
  • Jake needs 7.59 meters of wood to complete a school project. He buys a 2.21−meter plank of wood and a 3.12−meter plank of wood.
    15·1 answer
  • PLEASE HELP ME I WILL MARK BRAINLIEST
    11·2 answers
  • 216 diving students to 12 instructors
    7·1 answer
  • HELP ME PLS!!!!<br> WILL GIVE BRAINLIEST, 5 STARS, AND THANKS!!!
    5·1 answer
  • B.<br>Determine the quadratic function given the following zeroes:​
    12·1 answer
  • Please help I don't understand i'm in the lowest class?
    11·1 answer
  • 3. The elevation of a hilltop is 250 feet above sea level. The
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!