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3 years ago

Can you please help me with number 21 please

Mathematics

1 answer:

yKpoI14uk [10]3 years ago

8 0

Answer:

well it simply tells you if you think your right on all of them then press yes if not press no

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20 Points and will give brainliest to the first correct answer!

olga2289 [7]

Answer:

−1 −12 −12 1 1 12

Step-by-step explanation:

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3 years ago

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What is the derivative of y=3tan(x)y=3 tan (x) ?

maw [93]

$y=3tanx\\\\tanx=\frac{sinx}{cosx}\Rightarrow y=\frac{3sinx}{cosx}\\\\\\y'=\frac{(3sinx)'cosx-3sinx(cosx)'}{(cosx)^2}=\frac{3cosxcosx-3sinx(-sinx)}{cos^2x}=\frac{3cos^2x+3sin^2x}{cos^2x}\\\\=\frac{3(cos^2x+sin^2x)}{cos^2x}=\frac{3(1)}{cos^2x}=\frac{3}{cos^2x}\\\\-------------------\\\\sin^2x+cos^2x=1$

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3 years ago

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Cole bought 10 gallons of gas at the gas station with the lowest price.(the lowest price is $3.57 each gallon.) he paid with $40

Readme [11.4K]

$4.30
Do ten times $3.57 and subtract it from $40

7 0

3 years ago

If A, B, and Care 2x2 matrices; and det(A) = -2, det(B) = -3, and det(C)=-4 then compute: det(4C^TA^-1 C^TB^3) = 0 Official Time

almond37 [142]

Answer with explanation:

|A| = -2

|B|= -3

|C| = -4

$|4 C^TA^{-1}C^TB^{3}|=4 |C||A|^{-1}|C||B|^3, \text{as}|C^T|=|C|,|A^n|=A^n\\\\=4 \times (-4) \times (-2)^{-1} \times (-4) \times (-3)^3\\\\=4 \times (-4) \times \frac{-1}{2} \times (-4) \times (-27)\\\\=-1728 \times \frac{-1}{2} \\\\=864$

3 0

3 years ago

Yo i have no idea what this is. please help

Ad libitum [116K]

Answer:

X=8

Step-by-step explanation:

Cross multiply:

4 * 6 = x * 3

Simplifying

4 * 6 = x * 3

Multiply 4 * 6

24 = x * 3

Reorder the terms for easier multiplication:

24 = 3x

Solving

24 = 3x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-3x' to each side of the equation.

24 + -3x = 3x + -3x

Combine like terms: 3x + -3x = 0

24 + -3x = 0

Add '-24' to each side of the equation.

24 + -24 + -3x = 0 + -24

Combine like terms: 24 + -24 = 0

0 + -3x = 0 + -24

-3x = 0 + -24

Combine like terms: 0 + -24 = -24

-3x = -24

Divide each side by '-3'.

x = 8

Simplifying

x = 8

8 0

3 years ago