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
riadik2000 [5.3K]
3 years ago
10

Whick error did she do and what the correct answer

Mathematics
2 answers:
marusya05 [52]3 years ago
8 0

Answer:

The second one. The -2y should have been +2y

Step-by-step explanation:

a negative multiplied by a negative gives you a positive

leva [86]3 years ago
5 0

Answer:

it should be the second answer

Step-by-step explanation:

hope this helps

You might be interested in
The Niagara Falls ferris wheel has a diameter of 48 meters, and one revolution takes 2.25 minutes to complete. Riders can see Ni
Yanka [14]

The time intervals when the riders could see Niagara falls are; 0.834 < t < 1.416 and (3.084, 3.666)

<h3>How to interpret Cycle Graphs?</h3>

From the diagram attached, we can say that;

Period = 2π/k

where;

k = 2π/2.25

k = 8π/9

Thus;

h(t) = -(48/2) cos (8π/9)t + ((48/2) + 0.5)

h(t) = -24cos (8π/9)t + 24.5

Riders can see Niagara falls if they are higher than 41 meters above the ground. Thus;

41 = -24cos (8π/9)t + 24.5

41 - 24.5 = -24cos (8π/9)t

16.5 = -24cos (8π/9)t

-0.6875 = cos (8π/9)t

cos⁻¹0.6875 = (8π/9)t

t = 0.834 min

Thus, time interval is between;

0.834 < t < (2.25 - 0.834)

⇒ 0.834 < t < 1.416 and

(2.25 + 0.834) < t < (2.25 + 1.416)

⇒ (3.084, 3.666)

Read more about Cycle Graphs at; brainly.com/question/24461724

#SPJ1

4 0
2 years ago
1. Each month, the city of Accra generates an average of 28 pounds of waste. Assume the variable is approximately normally distr
Molodets [167]

1. Answer: given: an average of 28 pounds

a.

Find z values corresponding to 27 and 31:

z=%2827-28%29%2F2=-1%2F2=-0.5

z=%2831-28%29%2F2=3%2F2=1.5

Find the area between z+=+-0.5 and z=+1.5

Table E gives us an area of 0.9332-0.30=0.6247=> The probability is 62.47%

b.

Find z values corresponding to 30.2

z=%2830.2-28%29%2F2=2.2%2F2=1.1 Find the area to the right of z+=1.1

it gives you an area of 0.1357=> The probability is 13.57%

7 0
2 years ago
4=2(c-6)-4 solve for c
Naddik [55]
4=2c-12-4
4=2c-16
20=2c
10=c
8 0
3 years ago
Use the quadratic formula to find the solutions to the quadratic equation
wlad13 [49]
3*2=6
6-x-2=0
4=x
The answer is 4
7 0
2 years ago
Read 2 more answers
PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ HELP MEHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH!!!!!
erma4kov [3.2K]

Answer:

1 A, 2c, 3A,

4 P= 2(6x-1) + 2(2)   P=12x +2

Step-by-step explanation:

4 0
2 years ago
Other questions:
  • Ocean blue sells 179 medium t-shirts. how much money will they receive ? each t shirt costs 10$
    5·1 answer
  • Graph f(x) = 2x2 + 12x + 12
    13·2 answers
  • Evaluate each expression.
    11·1 answer
  • I need help with #11
    8·1 answer
  • What is 0.0625 as a square root
    14·1 answer
  • NEED HELP ASAP WILL GIVE BRAINLIEST
    14·1 answer
  • Please solve for a and b
    10·2 answers
  • 5n + 3n<br> simplify each expression
    5·1 answer
  • The ratio of the perimeter of two similar polygons is 5:7. The area of the smaller polygon is 30 sq. cm. Find the area of the la
    14·1 answer
  • Imaginary numbers : negative 48 squared
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!