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3 years ago

What number can you add to √7 to get a rational number?

1 answer:

4 0

The only number you can add to √7 to get a rational number is a-√7 where a is any rational number.
So if a=0 the answer is -√7, option answer 1.

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Rob was tasked to graph this system of equations:

Mars2501 [29]

Answer:

6x + 2y =5

y + 3x= 2

Step-by-step explanation:

5 0

3 years ago

The weights of college football players are normally distributed with a mean of 200 pounds and a standard deviation of 50 pounds

belka [17]

Answer:

$P(170$

And we can find this probability with this difference:

$P(-0.6$

Step-by-step explanation:

Let X the random variable that represent the weights of a population, and for this case we know the distribution for X is given by:

$X \sim N(200,50)$

Where $\mu=200$ and $\sigma=50$

We want to find the following probability:

$P(170$

And we can use the z score formula given by:

$z=\frac{x-\mu}{\sigma}$

And using this formula we got:

$P(170$

And we can find this probability with this difference:

$P(-0.6$

8 0

3 years ago

What were the conditions in Jewish ghettos under Nazi rule?

nasty-shy [4]

Answer:

Conditions in the ghettos were appalling. For example, the majority of the apartments in the Warsaw ghetto were unheated during winter, and the Nazis decided that the inhabitants of the Warsaw ghetto could survive on an official food allocation of 300 calories per day (compared with 634 calories for the Poles and 2,310 for the Germans).

The Nazis ordered Jews to wear identifying badges or armbands with a yellow Star of David on them in the ghettos. Many Jews were also required to perform forced labor for the German Reich. The Nazi-appointed Jewish councils (Judenrat) and Jewish police maintained order within the ghettos and were forced by the Germans to facilitate deportations to the extermination camps.

Step-by-step explanation:

7 0

3 years ago

I don’t understand this help please

Elodia [21]

Answer:

Step-by-step explanation:

The first simplification we can make is to replace 6^0 with 1.

The first rules of exponents we can apply are ...

(a·b)^c = a^c·b^c . . . . . . similar to the distributive property

 (a^b)^c = a^(b·c)

This reduces your expression to ...

$(2^8\cdot 3^{-5})^{-2}\cdot\left(\dfrac{3^{-2}}{2^3}\right)^4\cdot 2^{28}=2^{8(-2)}\cdot 3^{-5(-2)}\cdot\dfrac{3^{-2(4)}}{2^{3(4)}}\cdot 2^{28}\\\\=2^{-16}\cdot 3^{10}\cdot\dfrac{3^{-8}}{2^{12}}\cdot 2^{28}$

Now we can apply another two rules of exponents:

 (a^b)(a^c) = a^(b+c)

 1/a^b = a^-b

Using these, we have ...

$=2^{-16-12+28}\cdot 3^{10-8}\\\\=2^0\cdot 3^2\\\\=1\cdot 9=9$

The value of the expression is 9.

3 0

3 years ago

What is the remainder of 45 ÷ 4? 2 3 4 1

butalik [34]

Answer:

1 because 4 time 11 is 44. 45 - 44 is 1

Step-by-step explanation:

5 0

2 years ago