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3 years ago

Joseph says that in the number 9,999,999,all the digits have the same value?Is Joseph correct? explain

1 answer:

galina1969 [7]3 years ago

5 0

No because the first nine means 9,000,000 (nine million)and the last nine means just 9 meaning the first"nine's" value is a lot greater

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Can I get help for 4 and 5

Ad libitum [116K]

4.the dot would be on 1 1/2 and the x would be pointing toward the negative numbers

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3 years ago

Scientific notation for 321,003,271 plz help

miv72 [106K]

Answer:

3.21003271 x 10^8

Step-by-step explanation:

1. Add a decimal to the end of the number

2. Move the decimal left until your number is less than 10 but greater than 1

3. Count how many times you moved your decimal

4. Write the number of times you moved your decimal as the exponent

Sorry if the steps confuse you also Scientific Notation is my specialty

5 0

3 years ago

Read 2 more answers

Is the quotient of two rational numbers always a rational number? Explain.

Natasha_Volkova [10]

Answer:

Yes,

Step-by-step explananation

The quotient of two rational numbers is always rational, and the reason for this lies in the fact that the product of two integers is always an rational number.

6 0

3 years ago

An equation in the form ax2+bx+c=0 is solved by the quadratic formula. The solution to the equation is shown below.x=−7±√ "572"

jolli1 [7]

Answer:

B: a = 1, b= 7, c = -2

Step-by-step explanation:

<u>Quadratic Formula</u>

$x=\dfrac{-b \pm \sqrt{b^2-4ac} }{2a}\quad\textsf{when}\:ax^2+bx+c=0$

Given:

$x=\dfrac{-7\pm\sqrt{57}}{2}$

Comparing the terms of the given x-value with those of the quadratic formula:

$\dfrac{-b \pm \sqrt{b^2-4ac} }{2a}=\dfrac{-7\pm\sqrt{57}}{2}$

Therefore:

$2a=2 \implies a=1$
$b = 7$
$b^2-4ac=57$

Using the found values of a and b to solve for c:

$\implies b^2-4ac=57$

$\implies (7)^2-4(1)c=57$

$\implies 49-4c=57$

$\implies -4c=57-49$

$\implies -4c=8$

$\implies c=-2$

In summary: a = 1, b = 7, c = -2

$\implies x^2+7x-2=0$

Therefore, <u>option B</u> is the correct solution.

5 0

2 years ago

Read 2 more answers

Please tell me the answer and show the work please

Alexeev081 [22]

In case you can't find
(1 * 10^-6)*(7.5 * 10^18) = (1*7.5) * 10^(-6+18) = 7.5*10^12
in your head, your calculator can help.

6 0

3 years ago