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3 years ago

How many states are in the USA?

Mathematics

2 answers:

bija089 [108]3 years ago

7 0

50 States in the USA

34kurt3 years ago

5 0

Answer:

Step-by-step explanation:

hope this helps! :)

The United States of America is a federal republic consisting of 50 states, a federal district (Washington, D.C., the capital city of the United States), five major (land areas owned or controlled by someone), and different minor islands.

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Sarah’s mom took 3 hours to clean, but when Sarah helped, it took them 2 hours to clean. How many hours will it take Sarah to cl

Aleonysh [2.5K]

Answer:

It takes them 1.875 hours.

Step-by-step explanation:

Here, the job is cleaning the house.

Mom does 1 job in 3 hours.

In 1 hour, mom does 1/3 of the job.

Dad does 1 job in 5 hours.

In 1 hour, dad does 1/5 of the job.

Mom and dad working together do the job in x hours.

In 1 hour, mom and dad together do 1/x of the job.

1/3 + 1/5 = 1/x

5/15 + 3/15 = 1/x

8/15 = 1/x

8x = 15

x = 15/8 = 1.875

Answer: It takes them 1.875 hours.

your welcome

6 0

2 years ago

Read 2 more answers

Log1/2 28? What is it?

I am Lyosha [343]

$\log_a(b\cdot c)=\log_ab+\log_ac\\\\\log_ab^c=c\cdot\log_ab\\\\\log_aa=1\\--------------------\\\log_\frac{1}{2}28=\log_\frac{1}{2}(4\cdot7)=\log_\frac{1}{2}4+\log_\frac{1}{2}7=\log_\frac{1}{2}2^2+\log_\frac{1}{2}7\\\\=2\log_\frac{1}{2}2+\log_\frac{1}{2}7=\boxed{2+\log_\frac{1}{2}7}$

$\log_ab=\frac{\log_cb}{\log_ca}\\-------------------------\\\log_\frac{1}{2}7=\frac{\log\frac{1}{2}}{\log7}\approx\frac{-0.6931}{1.9459}\approx-0.3562\\\\therefore\\\\\boxed{\log_\frac{1}{2}28\approx2+(-0.3562)=1.6438}$

3 0

3 years ago

45% of 156 is what number?

riadik2000 [5.3K]

Answer:

$x = 70.2$

Step-by-step explanation:

Step 1: Make an expression

45% of 156 is what number

$156 * 0.45 = x$

Step 2: Multiply

$156 * 0.45 = x$

$70.2 = x$

Answer: $x = 70.2$

7 0

3 years ago

Read 2 more answers

Hermina cut a 10" by 15" piece of cardboard down the diagonal

vladimir2022 [97]

When you cut along the diagonal, a right triangle is formed where the hypotenuse is the diagonal and the legs are the length and width of the rectangle (10 and 15 in this case)
Now use the pythagorean theorem to solve
10^2+15^2=325=c^2
c= approx 18.02775=length of the diagonal

5 0

3 years ago

Find the average value of the function on the interval. f(x) = 6x; [0, 5] find all x-values in the interval for which the functi

xxMikexx [17]

F(×)=6×;[0.5]
5-1=6×10=[5.0]

4 0

3 years ago