All categories

3 years ago

Help me please i dont get it

Mathematics

2 answers:

Nana76 [90]3 years ago

7 0

Answer:

Step-by-step explanation:

rusak2 [61]3 years ago

7 0

Answer:6/12

Step-by-step explanation: you find the common denominator (12 in this case) and multiply 3 by 4 to get that,then you multiply one to get 4.And finally you can add (terrible explanation)

You might be interested in

The diameter of a sphere is 6 ft 6 in. Find the radius.

Jlenok [28]

Answer:

3 ft 3 in

Step-by-step explanation:

The radius is half the diameter.

If the diameter is 6 ft 6 in, then the radius is 3 ft 3 in.

3 0

3 years ago

Please help with the questions in the image

iren2701 [21]

Step-by-step explanation:

This seems to be calculus 1.

Question a

We have $-2x^3 + 5x^2 + 9$

m = slope = derivative

Find the derivative / slope of $-2x^3 + 5x^2 + 9$

We do this by differentiating the polynomials. There are a few methods to do this but I am going to use the power rule, which we multiply the constant by the exponent on the variable and subtract one from the exponent.

$\frac{d}{dx}(-2x^3 + 5x^2 + 9)$

$-6x^2 + 10x$

$m = -6x^2 + 10x$ when x = a

Now that we have this information, we can answer question b

Question b

The tangent line for Point (1, 12)

First find the slope by using our derivative.

$m = -6x^2 + 10x$

$m = -6(1)^2 + 10(1)$

$m = -6 + 10x$

$m = 4$

Now that we have our slope, use point slope form to find our tangent line

$y - 12 = 4(x - 1)$

$y(x) = 4x + 8$

Now lets do the same for the Point (2, 13)

Find the slope at the point.

$m = -6x^2 + 10x$

$m = -6(2)^2 + 10(2)$

$m = -24 + 10$

$m = -4$

Now find the tangent line using point slope form of a line.

$y(x) - 13 = -4(x - 2)$

$y(x) = -4x + 21$

Now graph the lines, which I have done and you can see by viewing the image I have attached.

6 0

4 years ago

if you are dealing from a standard deck of 52 cards, how many ways could you choose two eighths one after the other

tekilochka [14]

Hearts spades
hearts clubs
hearts diamonds
spades clubs
spades diamonds
clubs diamonds

You could choose two eights one after the other 6 ways.

3 0

3 years ago

Solve for x —22 = 2(x – 10) X =

Morgarella [4.7K]

Answer:

-1 = x

Step-by-step explanation:

Distribute 2 into x - 10 first to get to this equation which is -22 = 2x - 20. Add 20 on both sides to get -2 on the left side. Divide 2 on both sides to get your x-value which is -1.

8 0

3 years ago

Read 2 more answers

What is the value of x in the diagram? A 64 B 20 C 42 D 10

zhannawk [14.2K]

The correct answer is C

4 0

3 years ago

Read 2 more answers