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3 years ago

Sam cleaned of his house in 50 minutes. How many hours will it take him to clean his entire house?

Mathematics

2 answers:

Ira Lisetskai [31]3 years ago

7 0

Answer:

20min

Step-by-step explanation:

Shtirlitz [24]3 years ago

4 0

They cleaned how much of the house in 50 minutes? If you tell me this, I can give you an answer.

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The Johnson twins were born nine years after their older sister. This year, the product of the three siblings ages is exactly 18

KATRIN_1 [288]

Answer: The age of the twins is 10 years.

Step-by-step explanation:

Suppose the age of older sister be x

Let the age of twins sister be x-9, as they are born after 9 years.

Product of their ages be

$x(x-9)(x-9)\\\\=x(x^2-18x+81)\\\\=x^3-18x^2+81x$

Sum of their ages will be

$x+x-9+x-9\\\\=3x-18$

According to question,

$1861+3x-18=x^3-18x^2+81x\\\\x^3-18x^2+81x-3x+18-1861=0\\\\x^3-18x^2+78x-1843=0\\\\x=19$

So, Age of older sister will be 19 years.

Age of the twins will be

$19-9=10\ years$

Hence, the age of the twins is 10 years.

3 0

3 years ago

HELP ME PLEASEEEE<br> It’s a quiz

Dafna1 [17]

Answer:

Step-by-step explanation:

Because I know what a translation is

6 0

3 years ago

What is 2(10x+3)+2(4c)

lora16 [44]

Your answer is 140
so yeah i have to keep typing because its too short and im done

5 0

3 years ago

translate the word phrase into a math expression. nine more than five times a number

EastWind [94]

It is definitely a. 9>5n
Because it say 9 is more than five times a number and if you have any questions just comment an I'll try to help! :) Hope I helped!

8 0

3 years ago

Find the Surface Area of this Prism?

USPshnik [31]

Answer:

114ft

Step-by-step explanation:

3 times 3=9

9times 2=18

8 times 3=24

24 times 2=48

8 times 3 = 24

24 times 2 =48

48+48+18=114

4 0

3 years ago