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3 years ago

Can someone please help me on this, this is really confusing

Mathematics

2 answers:

raketka [301]3 years ago

8 0

Answer:

my educated guess would be B. i hope i dont get u the wrong answer

Step-by-step explanation:

galben [10]3 years ago

4 0

Answer:

I think A

Step-by-step explanation:

I am not sure but if u multiply 7x7 u get 49 and when u do 9x7 it gets u close to 65 that is my guess

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What is −3/8÷7/12 ?

RSB [31]

Answer:

-9/14

Step-by-step explanation:

This is my simplest-

Do the keep-change-flip method for this problem (and also any problem involving this)

KEEP -3/8

CHANGE the division sign to multiplication

FLIP the last fraction. 7/12 to 12/7

Now solve the problem by multiplying the fractions

-3/8 × 12/7 =

-3 × 12 = -36

8 × 7 = 56

-36 / 56 =

Simplify it by dividing the numerator (up of the line) and denominator (below the line) to get -9/14

5 0

3 years ago

Read 2 more answers

Factor x^8-26x^4+25=0

Black_prince [1.1K]

The answer is (x^4-1)(x^4-25)

5 0

4 years ago

PLEASE SHOW WORK

CaHeK987 [17]

(C)

Step-by-step explanation:

The volume of the conical pile is given by

$V = \dfrac{\pi}{3}r^2h$

Taking the derivative of V with respect to time, we get

$\dfrac{dV}{dt} = \dfrac{\pi}{3}\dfrac{d}{dt}(r^2h)$

$\:\:\:\:\:\:\:= \dfrac{\pi}{3}\left(2rh\dfrac{dr}{dt} + r^2\dfrac{dh}{dt}\right)$

Since r is always equal to h, we can set

$\dfrac{dr}{dt} = \dfrac{dh}{dt}$

so that our expression for dV/dt becomes

$\dfrac{dV}{dt} = \dfrac{\pi}{3}\left(3r^2\dfrac{dh}{dt}\right)$

$\:\:\:\:\:\:\:= \pi r^2\dfrac{dh}{dt}$

Solving for dh/dt, we get

$\dfrac{dh}{dt} = \dfrac{1}{\pi r^2}\dfrac{dV}{dt}$

$\:\:\:\:\:\:\:= \dfrac{1}{9\pi\:\text{m}^2}(36\:\text{m}^3\text{/s})$

$\:\:\:\:\:\:\:= \dfrac{4}{\pi}\:\text{m/s}$

7 0

3 years ago

Plz help I need the answer <br><br> You have to solve for the variable

serious [3.7K]

X=10 let me know if you need the work

6 0

3 years ago

Read 2 more answers

I need help please!

den301095 [7]

9514 1404 393

Answer:

f(g(x)) = 2/(x^2 +4x)

Step-by-step explanation:

$(f\circ g)(x)=f(g(x))\\\\(f\circ g)(x)=f(x+2)=\dfrac{2}{(x+2)^2-4}\\\\(f\circ g)(x)=\dfrac{2}{x^2+4x+4-4}\\\\\boxed{(f\circ g)(x)=\dfrac{2}{x^2+4x}}$

3 0

2 years ago

Can someone please help me on this, this is really confusing ​

Can someone please help me on this, this is really confusing