3 years ago

Math question help me please

Mathematics

1 answer:

nignag [31]3 years ago

3 0

Answer:

he 8 times

Step-by-step explanation:

so he mows 5 time his sister which is 9 but it says 3 for the sister instead of 4 making it 8

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Of 10 test scores, eight are less than or equal to 82. What is the percentile rank of a test score of 82?

sdas [7]

Answer:

80%

Step-by-step explanation:

Percentile rank = (number of scores lower or equal to 82 / total number of scores) * 100%

Percentile = (8 / 10) * 100%

= 0.8 * 100%

= 80%

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3 years ago

Simplify (7/9a+9/7b)^2-ab

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Ab+49/81a^2+81/49b^2

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0.4 divided by 0.08=

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Answer:

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Step-by-step explanation:

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4 years ago

Write (1/3i)-(-6+2/3i) as a complex number in standard form

Eddi Din [679]

Answer:

$6+\frac{i}{3}$

Step-by-step explanation:

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$\frac{1}{3\imath}+6-\frac{2}{3\imath}$

taking like terms together

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taking LCM

$\frac{1-2}{3\imath}+6$

$\frac{-1}{3\imath}+6$

taking LCM

$\frac{-1+18\imath}{3\imath}$

splitting the term

$\frac{-1+18\imath}{3\imath}$

splitting the term

$-\frac{1}{3\imath}+\frac{18\imath}{3\imath}$

$-\frac{1\times3\imath}{3\imath \times \imath}+6$

$-\frac{i}{3\imath^2}+6$

we know that

$\imath^2=-1$

putting this value in above equation

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3 years ago

You decide that you would like to buy a new notebook computer. You currently have $50 that you earned from babysitting. You can

Paraphin [41]

Okay? Whats the point? If You're trying to find out how long it would take then you would have to make $500 so 45 more hours until you can get it.

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3 years ago

Read 2 more answers