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3 years ago

Is 9.777..... a whole number, integer,rational number, irrational number, real number.

Mathematics

1 answer:

viktelen [127]3 years ago

6 0

9.77777... Is a rational number because it has a pattern and is a decimal.

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How many times larger than<br> (15 + 10) is 8 x (15 + 10)?

zvonat [6]

Answer:

8 times larger

Step-by-step explanation:

(15+10) is the singular equation alone. Muiltiply it by 8, and it's 8 times larger then the initial singular expression. Therefore, the answer is 8 times larger.

3 0

3 years ago

The Eiffel Tower in Paris, France. Lizbeth is 5.5 feet tall. She looks up at an angle of elevation of 72° to see the top from 31

garri49 [273]

Answer:

The height of the Eiffel Tower will be 318 feet.

Step-by-step explanation:

Please check the attached graph.

From the diagram, it is clear that Lizbeth is 5.5 ft tall, seeing the top from 318 feet away, making an angle of elevation to be 72⁰.

The diagram makes a right-angled triangle.

Given the angle = Ф = 72⁰

Adjacent = a = 5.5 ft

Opposite = b = 318 ft

Hypotenuse = the height of the Eiffel Tower = c ?

Pythagorean Theorem:

For a right-angled triangle, with sides 'a' and 'b', the hypotenuse 'c' is defined as:

$c=\sqrt{a^2+b^2}$

$a=5.5$

$b=318$

$c=\sqrt{5.5^2+318^2}$

$c=318$ feet

Therefore, the height of the Eiffel Tower will be 318 feet.

3 0

2 years ago

Angie has to fill in a reading log for her English class. She is required to read a total of 10 and 5 over six hours a week. On

JulijaS [17]

Given:

She is required to read a total = $10\dfrac{5}{6}$ hours a week.

Monday she read $1\dfrac{1}{3}$ hours.

Tuesday she read $\dfrac{3}{4}$ of an hour.

Thursday she read 3 hours.

To find:

The total hours does she still need to read in order to get full credit.

Solution:

Total time = $10\dfrac{5}{6}$ hours a week.

Total time she already read $=1\dfrac{1}{3}+\dfrac{3}{4}+3$ hours

$=\dfrac{1\times 3+1}{3}+\dfrac{3}{4}+3$ hours

$=\dfrac{4}{3}+\dfrac{3}{4}+3$ hours

$=\dfrac{16+9+36}{12}$ hours

$=\dfrac{61}{12}$ hours

Now,

Remaining time = Total time - Total time she already read

$=10\dfrac{5}{6}-\dfrac{61}{12}$

$=\dfrac{65}{6}-\dfrac{61}{12}$

$=\dfrac{130-61}{12}$

$=\dfrac{69}{12}$

$=\dfrac{23}{4}$

$=5\dfrac{3}{4}$

Therefore, the required time is $5\dfrac{3}{4}$ hours.

8 0

3 years ago

A person invested $710 in an account growing at a rate allowing the money to double every 12 years. How long, to the nearest ten

mario62 [17]

4 years and 7 months so I guess that would be 4.6 years

3 0

2 years ago

Tiffany’s class recycled 3 1/2 box of paper in a month if they recycled another 6 2/5 boxes the next month was is the total amou

nalin [4]

Answer:

9 9/10

Step-by-step explanation:

amount of them

= 3 1/2 + 6 2/5

= 7/2 + 32/5

= 35/10 + 64/10

= 99/10

= 9 9/10

8 0

3 years ago