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Sav [38]
3 years ago
8

after taking nine test Carols average grade in her Italian classes 90 her teacher drops the lowest of the nine test scores to de

termine the final grade of Carols final grade is 91 what was her lowest test score

Mathematics
1 answer:
Ostrovityanka [42]3 years ago
5 0

Answer:

82

Step-by-step explanation:

The sum of scores for the 9 tests must be 90 * 9 = 810. The sum of scores for the 8 tests is 8 * 91 = 728 so the lowest score is 810 - 728 = 82.

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seraphim [82]

Answer:

6 hours and 30 mins

Step-by-step explanation:

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6 0
2 years ago
A bag contains 5 yellow marbles and 10 blue marbles. If a representative sample contains 2 yellow ​marbles, then how many blue m
Dmitry [639]

Answer:

There will be 4 blue marbles

Step-by-step explanation:

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simplee cross multiplication can be aplied

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4 0
3 years ago
Read 2 more answers
Factor x^4 + x y^3 + x^3 + y^3 completely. Show your work.
andrey2020 [161]
\bf x^4+xy^3+x^3+y^3\impliedby \textit{now let's do some grouping}
\\\\\\
(x^4+xy^3)~~+~~(x^3+y^3)\implies x(x^3+y^3)~~+~~(x^3+y^3)
\\\\\\
\stackrel{\stackrel{common}{factor}}{(x^3+y^3)}(x+1)\\\\
-------------------------------\\\\
\textit{now recall that }\qquad \qquad \textit{difference of cubes}
\\ \quad \\
a^3+b^3 = (a+b)(a^2-ab+b^2)\qquad
a^3-b^3 = (a-b)(a^2+ab+b^2)\\\\
-------------------------------\\\\
(x+y)(x^2-xy+y^2)(x+1)
5 0
3 years ago
Need assistance solving for x​
Mashcka [7]

Please post the question ..i'll solve for x

5 0
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Math homework due tomorrow
Margarita [4]
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8 0
3 years ago
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