3 years ago

Send help pls and ty

Mathematics

1 answer:

Bond [772]3 years ago

8 0

Answer:

Step-by-step explanation:

9-5=4 --> 0.4

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50a3 + 10a2

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$50a^3+10a^2\\\\50a^3=10\cdot5\cdot a^2\cdot a=10a^2\cdot5a\\\\50a^3+10a^2=10a^2\cdot5a+10a^2\cdot1=\huge\boxed{10a^2(5a+1)}\to\boxed{A}$

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3 years ago

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In your own words, describe the negative property. Use complete sentences.

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Answer:

The negative property is a sign used when a number goes below zero

Step-by-step explanation:

if that is the negative you are talking about

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3 years ago

What does 8.4 10^5-7.7 10^4 equal?

Alex

Answer:

$\huge\boxed{763,000=7.63\cdot10^5}$

Step-by-step explanation:

$\bold{METHOD\ 1:}\\\\8.4\cdot10^5-7.7\cdot10^4=8.4\cdot100,000-7.7\cdot10,000\\\\=840,000-77,000=763,000\\\\\bold{METHOD\ 2:}\\\\8.4\cdot10^5-7.7\cdot10^4=8.4\cdot10^{1+4}-7.7\cdot10^4\qquad\text{use}\ a^n\cdot a^m=a^{n+m}\\\\=8.4\cdot10^1\cdot10^4-7.7\cdot10^4=84\cdot10^4-7.7\cdot10^4\\\\\text{use the distributive property}:\qquad a(b+c)=ab+ac\\\\=(84-7.7)\cdot10^4=76.3\cdot10^4=7\underbrace{.63}_{\leftarrow1}\cdot10^{4+1}=7.63\cdot10^5$

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3 years ago

Salim and Medha are comparing results from a two-day lab experiment. On Monday, Salim’s results showed that 0.907 of the particl

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Medha on Tuesday. 0.92 is greater than the others.

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3 years ago

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D. 3h =

vfiekz [6]

Answer: e. 2h + 3 = 10; h = 3.5h

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Jane can run 2 miles per hour. (2h)

He need to run 10 miles in total and has done 3 so far. (+ 3 = 10)

The equation can be written:

2h + 3 = 10
2h = 7
h = 7/2 = 3.5

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3 years ago