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3 years ago

-41.3 x 10 x 1.7 x 10-3x 10Q2[2]Ed9.

Mathematics

1 answer:

Len [333]3 years ago

3 0

Answer:

221

Step-by-step explanation:

use bidmas (brackets,indices, division,multiplication,addition,substraction)

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Which are the solutions of x2 = 19x + 1?

Finger [1]

Answer:

$(\frac{19-\sqrt{365}} {2},\frac{19+\sqrt{365}} {2})$

Step-by-step explanation:

we have

$x^2=19x+1$

we know that

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$-x^{2}-19x-1=0$

$a=1\\b=-19\\c=-1$

substitute in the formula

$x=\frac{-(-19)\pm\sqrt{-19^{2}-4(1)(-1)}} {2(1)}$

$x=\frac{19\pm\sqrt{365}} {2}$

$x=\frac{19+\sqrt{365}} {2}$

$x=\frac{19-\sqrt{365}} {2}$

$(\frac{19-\sqrt{365}} {2},\frac{19+\sqrt{365}} {2})$

therefore

StartFraction 19 minus StartRoot 365 EndRoot Over 2 EndFraction comma StartFraction 19 + StartRoot 365 EndRoot Over 2 EndFraction

6 0

3 years ago

Read 2 more answers

A forester planted 3 acres in seedlings the first day, 5 acres the second day, and

Yanka [14]

Answer:

9 acres remain

Step-by-step explanation:

First day:

3 acres

Second day:

5 acres were planted. 5 + 3 = 8

Third day:

4 acres were planted. 4 + 8 = 12

If 3 acres were destroyed, we just subtract!

12 - 3 = 9.

9 acres of seedlings remain.

I hope this helped! :)

6 0

3 years ago

Simplify. Can you explain it also?

Doss [256]

Answer:

The answer is

Step-by-step explanation:

To solve the fraction reduce the fraction with d

That's we have

Next simplify the expression using the rules of indices to simplify the letters in the fraction

<u>For c </u>

Since they are dividing we subtract the exponents

We have

<u>For </u><u>e</u>

Substituting them into the expression we have

Reduce the fraction by 3

We have the final answer as

Hope this helps you

8 0

3 years ago

(6t^4-t+1) - (6t^3-4t)

goldenfox [79]

Answer:

$= 6 {t}^{4} - 6 {t}^{3} + 3t + 1$

Step-by-step explanation:

$6 {t}^{4} - t + 1 - 6 {t}^{3} + 4t \\ = 6 {t}^{4} - 6 {t}^{3} + 3t + 1$

5 0

3 years ago

If 72 males and 108 females responded to your fashion survey, what percentage were females?

Sergio039 [100]

60% is the percentage of the females who responded to the survey.

7 0

3 years ago

-41.3 x 10 x 1.7 x 10-3x 10Q2[2]Ed9.​

-41.3 x 10 x 1.7 x 10-3x 10Q2[2]Ed9.