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3 years ago

15

Áp dụng quy tắc khai phương 1 tích hãy tính

1 answer:

Zinaida [17]3 years ago

6 0

Answer:

Please write out in english

Step-by-step explanation:

I cannot help unless you can translate.

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The number forty one to the power of negative start fraction two over five end fraction end power can be written in the form sta

Fantom [35]

From the description we can infer that we have the expression: $41^{- \frac{2}{5} }$ .
Now, to write our expression as a as a root, we are going to apply the law of exponents: $x^{-n}= \frac{1}{x^n}$ first
$41^{- \frac{2}{5} }= \frac{1}{41^{ \frac{2}{5} }}$

Next, we are going to apply the law about fractional exponents: $x^{ \frac{m}{n}}= \sqrt[n]{x^m}$
$\frac{1}{41^{ \frac{2}{5} }}= \frac{1}{ \sqrt[5]{41^2} }$

We can conclude that the value of B is 2.

3 0

3 years ago

High grade steel consists of 85% iron and 15% magnese. Low grade steel consists of 67% iron and 33% mag ese. NASA orders 500 ton

Mamont248 [21]

Answer:

$361\dfrac{1}{9}$ tons of high steel and $138\dfrac{8}{9}$ tons of low steel

Step-by-step explanation:

Let x be the number of tons of high grade steel and y be the number of tons ow low grade steel needed.

In x tons of high grade steel there are

$0.85x$ tons of iron

$0.15x$ tons of magnese

In y tons of low grade steel there are

$0.67y$ tons of iron

$0.33y$ tons of magnese

NASA orders 500 tons of steel, so

$x+y=500$

and specifies that it must be in the proportion 80% iron and 20% magnese, so

$0.85x+0.67y=500\cdot 0.8\\ \\0.85x+0.67y=400$

From the first equation,

$x=500-y$

Substitute it into the second equation:

$0.85(500-y)+0.67y=400\\ \\425-0.85y+0.67y=400\\ \\-0.18y=-25\\ \\y=\dfrac{2,500}{18}=138\dfrac{8}{9}\ tons\\ \\x=361\dfrac{1}{9}\ tons$

7 0

4 years ago

Please help me please

dmitriy555 [2]

I think it is game engine developer or ui

6 0

3 years ago

Read 2 more answers

GEOMETRY HELP) Triangle ABC is similar to triangle PQR. <br><br><br><br> Which equation is correct?

kirill115 [55]

Hello,

We must find the corresponding points: (using angles)

A-->P
B-->Q
C-->R

AB/PQ=BC/QR=AC/PR ===> c/r=a/p=b/q

Answer C

3 0

3 years ago

Question 1 of 10<br> (x)=x2. What is g(x)?<br> y<br> f(x)<br> g(x)<br> -5<br> 6<br> (3, 3)<br> 5

never [62]

The graph is attached and the answer to the function g(x) = (1/3)x²

Option A is the right answer.

<h3>What is a Function ?</h3>

A function is a mathematical statement that relates a dependent variable and an independent variable.

It is given that

f(x) = x²

It has been asked to determine the equation of g(x)

It can be seen from the graph the the vertex is same just the graph is scaled.

The point (3,3) is of g(x) , when the value of y at at x =3 is 9

Therefore the scale factor is 1/3

And we can do trial and error on the basis of the options given ,

The graph is attached and the answer to the function g(x) = (1/3)x²

Option A is the right answer.

To know more about Function

brainly.com/question/12431044

#SPJ1

6 0

2 years ago