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3 years ago

Charles wants to analyze his last 9 math test scores with a

Mathematics

1 answer:

dexar [7]3 years ago

6 0

Answer:

80,84,86,87, 91, 92, 90,94, 100

Step-by-step explanation:

Order them from low too high number grades.

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100pts: Prove or disprove: If x is a 2 digit number, and y is the number formed by reversing the order of X's digits, then x + y

alexandr1967 [171]

Step-by-step explanation:

If we use this formula then

X is 54 y is 45

54 + 45 = 11(54 + 45)

99 = 11(99)

99 = 1089

= 1089 - 99

= 990

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3 years ago

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What is the slope intercept form of the equation

jenyasd209 [6]

I don’t remember lol

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3 years ago

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The owner of a cattle ranch would like to fence in a rectangular area of 3000000 m^2 and then divide it in half with a fence dow

Reika [66]

If you notice the picture below, the amount of fencing, or perimeter, that will be used will be 3w + 2l

now $\bf \begin{cases}
A=l\cdot w\\\\\
A=3000000\\
----------\\
3000000=l\cdot w\\\\
\frac{3000000}{w}=l
\end{cases}\qquad thus
\\\\\\
P=3w+2l\implies P=3w+2\left( \cfrac{3000000}{w} \right)\implies P=3w+\cfrac{6000000}{w}
\\\\\\
P=3w+6000000w^{-1}\\\\
-----------------------------\\\\
now\qquad \cfrac{dP}{dw}=3-\cfrac{6000000}{w^2}\implies \cfrac{dP}{dw}=\cfrac{3w^2-6000000}{w^2}
\\\\\\
\textit{so the critical points are at }
\begin{cases}
0=w^2\\\\
0=\frac{3w^2-6000000}{w^2}
\end{cases}$

solve for "w", to see what critical points you get, and then run a first-derivative test on them, for the minimum

notice the $0=w^2\implies 0=w$ so. you can pretty much skip that one, though is a valid critical point, the width can't clearly be 0

so.. check the critical points on the other

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3 years ago

Write the expression-3x2+2y2+5xy-2y+5x2-3y2 in simplest form A how many terms are in the simplified expression? B how many terms

natima [27]

Answer:

Step-by-step explanation:

= x²(-3 +5) +y²(2 -3) +5xy -2y

= 2x² -y² +5xy -2y

a) there are 4 terms in the simplified expression

b) 2 terms have negative coefficients (-y² and -2y)

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3 years ago

Which are undefined? sec(-pi/) csc(3pi) cot(7pi/2) csc(-3pi/2) cot(5pi/3)

maxonik [38]

Step-by-step explanation:

after you draw a unit circle you will find the answer

cosec(3pi)=1/sin(3pi)

sin3pi=sinpi=0

so cosec3pi=1/0 which is undefined.

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3 years ago

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