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Nookie1986 [14]
3 years ago
14

Please help this is very easy!!!!!!!

Mathematics
2 answers:
CaHeK987 [17]3 years ago
7 0

Answer:

40/42 = 20/21

Step-by-step explanation:

slega [8]3 years ago
5 0

Answer:

\frac{20}{21}

Step-by-step explanation:

To divide fractions, multiply by the reciprocal. Therefore:

\frac{5}{6} / \frac{7}{8}  = \frac{5}{6} * \frac{8}{7}

Solve by multiplying the fraction with the reciprocal:

\frac{5}{6} *\frac{8}{7}= \frac{5*8}{6*7} = \frac{40}{42}

Simplify:

\frac{40}{42} = \frac{20}{21}. This is your answer!

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(a + b)(a ² - ab + b ²) Please help!
kvasek [131]
Hey there :)

( a + b )( a² - ab + b² )
Let us distribute ( a + b )

a ( a² ) + a ( - ab ) + a ( b² ) + b ( a² ) + b ( - ab ) + b ( b² )
a³ - a²b + ab² + a²b - ab² + b³

We can simplify further:
- a²b + a²b = 0
ab² - ab² = 0

a³ + b³

You can see in the picture I have attached that this is the 7th formula

4 0
3 years ago
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How to solve an algebraic expression by putting values of unknown
andrey2020 [161]

Answer:

Step-by-step explanation:

Algebraic expressions tend to have atleast one unknown variable in it. In order to solve the expression we need to assign a fixed value to that variable or isolate it if the expression is equal to another value. For example, in the following expression we have the variable x, if we give it a value of 5 we simply solve like a regular expression...

5x + 3

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25 + 3

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Therefore, if we swap the variable x for the value of 5 we would get a value of 28 in this algebraic expression.

7 0
2 years ago
Find the sum of PQ<br> 8x-27
valentinak56 [21]

Answer:

37 just did it on my test and got it right

8 0
3 years ago
Look at the figure. is the intersection of plane _____ and plane QRST.
ivanzaharov [21]
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6 0
3 years ago
Can someone please tell the answers to all of the questions I don’t understand them
Butoxors [25]

Hey

Question 1: For this one, we simply need to look at the "fat grams over 25" and the "Total" sections. We can see that 27 out of 50 have fat grams over 25. This written as a percentage is: 54%

Question 2: Using the same logic above we conclude the answer is 45.45%

Question 3: For this we need to look at the "total" section and the answer is 50

Question 4: We add all the "over 300" and write it as a percentage out of 50 which is 14%

Question 5: Same as #1 answer is 21%

Hope this helps

3 0
3 years ago
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