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1 year ago

Zero and negative exponentswrite in simplest form without zero or negative exponents

Mathematics

1 answer:

gulaghasi [49]1 year ago

7 0

We have the following rule for exponents:

$a^0=1$

then, in this case we have:

$(-17)^0=1$

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Greatest to least 4.854; 4,9; 4.124; 4.78

faltersainse [42]

9,4.854,4.78,4.124,4

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3 years ago

It takes 40 minutes for 8 people to paint 4 walls.

elena-s [515]

56 minutes for 5 people to paint 10 walls multiply by 5 to get 1 persondivide by 7 to get 7 peopledivide by 10 to get 1 wall multiply by 8 to get 8 walls(56)5*8)/(10*7) minutes for 7 people to paint 8 walls2240/70 = 32 minutes

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3 years ago

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35 percent of the students are boys which is 259 find the total number of the students and girls

Amanda [17]

Answer:

740 total students, 481 total girls

Step-by-step explanation:

Let x be the total number of students and y be the total number of girls

x -

You know that 35% of the students is 259 students. If you convert this into algebra, you can write : 0.35x = 259, after simplifying, you know that x = 740.

You know that 35% of the students are boys, so 65% must be girls. You can say that 65% of x is y and write the equation 0.65(740)=y. After simplifying, you can see that y = 481.

I hope this helps :)

5 0

3 years ago

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Evaluate cube root of 5 multiplied by square root of 5 over cube root of 5 to the power of 5.

Andre45 [30]

Answer:

Option d) 5 to the power of negative 5 over 6 is correct.

$\dfrac{\sqrt[3]{\bf 5} \times \sqrt{\bf 5}}{\sqrt[3]{\bf 5^{\bf 5}}}= 5^{\frac{\bf -5}{\bf 6}}$

Above equation can be written as 5 to the power of negative 5 over 6.

ie, $5^\frac{\bf -5}{\bf 6}$

Step-by-step explanation:

Given that cube root of 5 multiplied by square root of 5 over cube root of 5 to the power of 5.

It can be written as below

$\dfrac{\sqrt[3]{5} \times \sqrt{5}}{\sqrt[3]{5^5}}$

$\dfrac{\sqrt[3]{5} \times \sqrt{5}}{\sqrt[3]{5^5}}= \dfrac{5^{\frac{1}{3}} \times 5^{\frac{1}{2}}}{5^{\frac{5}{3}}}$

$\dfrac{\sqrt[3]{5} \times \sqrt{5}}{\sqrt[3]{5^5}}= \dfrac{5^{\frac{1}{3}+\frac{1}{2}}}{5^{\frac{5}{3}}}$

$\dfrac{\sqrt[3]{5} \times \sqrt{5}}{\sqrt[3]{5^5}}= \dfrac{5^{\frac{2+3}{6}}}{5^{\frac{5}{3}}}$

$\dfrac{\sqrt[3]{5} \times \sqrt{5}}{\sqrt[3]{5^5}}= 5^{\frac{5}{6}} \times 5^{\frac{-5}{3}}$

$\dfrac{\sqrt[3]{5} \times \sqrt{5}}{\sqrt[3]{5^5}}= 5^{\frac{5-10}{6}}$

$\dfrac{\sqrt[3]{5} \times \sqrt{5}}{5^5}= 5^{\frac{-5}{6}}$

Above equation can be written as 5 to the power of negative 5 over 6.

7 0

4 years ago

The sat scores have an average of 1200 with a standard deviation of 120. a sample of 36 scores is selected. what is the probabil

Naya [18.7K]

We first standardise $\bar{x}$ :
P(1224 > $\bar{x}$ )=P( $\frac{1224-1200}{\frac{120}{ \sqrt{36} }}$ > $\frac{\bar{x}-1200}{\frac{120}{\sqrt{36}}}$ )
which reduces to finding P(Z > 1.2) = 0.115

4 0

3 years ago

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