MATHEMATICS HIGH SCHOOL

Please answer 2) multiple choice questions correctly I need it today please show work .
Please answer 2) multiple choice questions correctly I need it - 1

Answers

Answer 1
Answer:

Answer:

Step-by-step explanation:

20. First find the values of the numbers being added.

((3)/(4))^3 = (27)/(64)

((5)/(8) )^2 = (25)/(64)

These numbers have a common denominator, so you can add the numerators

27 + 25 = 52

so the number comes out to (52)/(64)

to simplify, divide the numerator and denominator by 4.

So the final fraction becomes (13)/(16)

However the question doesn't have this answer and now I am confused. I assumed that the expression was r^(3)+s^(2) but the picture is a little bit blurry and I have bad eyesight so let me know if it is not. I'm too tired to delete this so next problem.

21.

4x + 8x + 7 + 4

Combine the like terms to get the expression

12x + 11 the answer is c.

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Help please! Thanks

Answers

Answer:

E. 0

Step-by-step explanation:

There isn't any guarantee that there are any people that have their birthdays in the same month based on what you're given, so your answer would be 0.

if it takes juwan exactly 35 minutes by car to get to his grandmother's. the nearest parking area is a 4-minute walk from her apartment.one week, he realized that he spent 5 hours and 12 minutes traveling to her apartment, and then back Home. how many round trips did he make to visit his grandmother's?

Answers

He made 4 round trips to visit his grandmother.

Further Explanation

Step 1

Amount of time he spent to get to his grandmother’s = 35 minutes and extra 4-minute walk (and can be expressed as 35 + 4)

= 35 + 4  

= 39

Step 2

To complete a round trip, the amount of time he spent to his grandmother’s will be multiply by 2

Therefore,

= 39 x 2

= 78

Total amount of time of a round trip = 78

Step 3

Amount of time he spent on a trip to her apartment and back home = 5 hours and 12 minutes

To determine that, 5 hours will be added to 12 minutes

Therefore,

Since 1 hour = 60,

Then, (5 x 60) +12

= (5 x 60) + 12

= 300 + 12

= 312

Amount of time he spent on a trip to her apartment and back home = 312

Step 4

To determine how many round trip he made, the amount of time he spent on a trip to her apartment and back home (312) will be divided by the total amount of time of a round trip (78) i.e. 312 ÷ 78

= 312 ÷ 78

= (312)/(78)

= 4

Therefore Juwan made a total of 4 round trips to his grandmother’s place.

LEARN MORE:

KEYWORDS:

  • juwan
  • apartment
  • 4-minute walk
  • grandmother
  • parking area
  • round trips
1 Round Trip = 2(35 min + 4 min) = 78 min

Total time spent travelling:
(5 hrs * 60 min/hr) + 12 min = 312 min

Number of Round Trips:
(312 min)/(78 min) = 4 round trips

Which statement justifies that 3x^2 − x − 5 multiplied by 2x^2 − x − 3 obeys the closure property of multiplication?The result 6x^4 + x^2 + 15 has a degree of 4.
The result 6x^4 + x^2 + 15 is a trinomial.
The result 6x^4 − 5x^3 − 18x^2 + 8x + 15 is a polynomial.
The result 6x^4 − 5x^3 − 18x ^2 + 8x + 15 has a degree of 4.

Answers

(3x² - x - 5)(2x² - x - 3)

3x²(2x² - x - 3) -x(2x² - x - 3) - 5(2x² - x - 3)

6x⁴ - 3x³ - 9x² - 2x³ + x² + 3x - 10x² + 5x + 15
6x⁴ - 3x³ - 2x³ - 9x² + x² - 10x² + 3x + 5x + 15
6x⁴ - 5x³ - 18x² + 8x + 15

The result 6x^4 − 5x^3 − 18x^2 + 8x + 15 is a polynomial.

Isaak is writing an explicit formula to represent the sequence.64, 112, 196, 343, ...

What value should he use as the common ratio in the formula? Write the answer as a decimal rounded to the nearest hundredth.

Answers

Answer:

1.75

Step-by-step explanation:

A geometric progression or sequence is a series of numbers with a special property where the ratio between each consecutive number is the same. This number is called the common ratio.

We can test whether the sequence is geometric by dividing consecutive numbers as follows:

(112)/(64) = 1.75

(196)/(112) = 1.75

(343)/(196) = 1.75

So we can see that the common ratio is 1.75.
112/64=1.75
196/112=1.75
343/196=1.75

common ratio is 1.75

250 + 200h = 300 + 180h250 + 200h = 300 + 180h 
      − 180h           − 180h
250 +  20h = 300
h = credit hours

Answers

250+200h = 300+180h
     -180h            -180h
250+20h = 300
-250         -250
20h = 50
/20     /20
h = 2.5
 

Answer:h=2.5

Step-by-step explanation:

A solid metal sculpture in Kamila’s backyard is in the shape of a sphere and has a radius of 6 inches. She wants to have it melted and made into small solid cones. She would like the cones to each have a diameter of 6 inches and a height of 9 inches. With these dimensions, how many cones can be made from the metal sphere? In your final answer, include all formulas, equations, and calculations necessary to determine how many cones can be made.

Answers

Assuming that the process of transforming the sphere into cones there would be no losses

V_sphere = n(V_cones)

V_sphere = (4/3)(PI)(r^3)

= 904.7787 in3

V_cones = (1/3)(PI)(R^2)(H)
                = 84.8230 in3

n = (V_sphere)/ (V_cones)

= (904.7787)/(84.8280)

= 10.667

~ 10 cones           
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