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2 years ago

A cylinder has a cross-sectional area of 17m² and a length of 14 m what is the volume of the cylinder

Mathematics

1 answer:

LekaFEV [45]2 years ago

3 0

Answer:

your answer please mark me as brainlist

Step-by-step explanation:

238

m³

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Select the correct answer.

Marta_Voda [28]

Answer: Step 5

===================================================

Reason:

The order of operations is PEMDAS

P = parenthesis
E = exponents
M = multiplication
D = division
A = addition
S = subtraction

The multiplication and division are on the same level of precedent, and the same goes for addition and subtraction. Some math textbooks may refer to PEMDAS as BODMAS, which is basically the same thing.

Notice how division comes before addition. So we must compute the $10 \div 2$ portion first before adding in step 4.

This is what steps 4 and onward should look like

$2 + 10 \div 2\\\\2 + 5\\\\7$

So that's why the error is in step 5

If there was parenthesis around the "2+10", and we had $(2+10) \div 2$ , then step 5 given by your teacher would be correct.

5 0

2 years ago

If f(x) =3x^2 and g(x) =4x^3 +1 what is the degree of fg (x)

Julli [10]

F°g(x) = f(g(x)) = 3(g(x))² = 3(4x³ + 1)².
Now, when you expand the bracket, you will find that the highest degree or degree of the polynomial is 6.
∴degree of fg (x) = 6

4 0

3 years ago

Use the given information to determine the exact trigonometric value.

pashok25 [27]

Answer: $\bold{a.\quad -\dfrac{2\sqrt{6}}{5}}$

Step-by-step explanation:

$sin\theta=\dfrac{y}{h}\implies y=-1, h=5\\\\\\\text{Use Pythagorean Theorem to find x:}\\x^2 + y^2 = h^2\\x^2 + (-1)^2=5^2\\x^2+1=25\\x^2=24\\x=\sqrt{24}\\x=2\sqrt{6}$

$\text{Since }\theta\text{ is between }\pi\text{ and }\dfrac{3\pi}{2} \text{ (Quadrant III)},\text{ then x and y are negative.}\\\implies x=-2\sqrt{6}\\\\\\cos\theta = \dfrac{x}{h}\quad =\boxed{-\dfrac{2\sqrt{6}}{5}}$

5 0

4 years ago

M=3 (1,5) in slope intercept form

ra1l [238]

Answer:

y=3x+5

Step-by-step explanation:

6 0

3 years ago

What is the image of the point (-2, 4) under a 90° rotation about the origin?

Anon25 [30]

Answer:

(- 4, - 2 )

Step-by-step explanation:

Under a rotation about the origin of 90°

a point (x, y ) → (- y, x ) , then

(- 2, 4 ) → (- 4, - 2 )

5 0

3 years ago