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3 years ago

What is the value of 9(4x - 4), when x=5?

1 answer:

5 0

I believe by asking you to do all multiplication first they are asking you to demonstrate the distributive property, this means we can distribute the 9 through the parenthesis by multiplying it by each part inside the parenthesis, this gives us:

36x - 36

now we can substitute 5 in for x to get:

36(5) -36

180-36

144

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I NEED HELP ON THIS CONSTRUCTED RESPONSE! :(

Vikentia [17]

Answer:

Step-by-step explanation:

-12x - 0.4 > 0.2(36.5x + 80) - 55

-12x - 0.4 > 7.3x + 16 - 55

-19.3x > -38.6

x < 2

4 0

3 years ago

1. 3x + 9 -2(x + 1) = 4x + 1

Julli [10]

none I think it's the answer is 2

3 0

3 years ago

HELP. How long is the minor axis for the ellipse shown below?

kifflom [539]

Given:

The equation of ellipse is

$\dfrac{(x+4)^2}{25}+\dfrac{(y-1)^2}{16}=1$

To find:

The length of the minor axis.

Solution:

The standard form of an ellipse is

$\dfrac{(x-h)^2}{a^2}+\dfrac{(y-k)^2}{b^2}=1$ ...(i)

where, (h,k) is center, if a>b, then 2a is length of major axis and 2b is length of minor axis.

We have,

$\dfrac{(x+4)^2}{25}+\dfrac{(y-1)^2}{16}=1$ ...(ii)

On comparing (i) and (ii), we get

$b^2=16$

Taking square root on both sides.

$b=\pm 4$

Consider only positive value of b because length cannot be negative.

$b=4$

Now,

Length of minor axis = $2b$

= $2(4)$

= $8$

So, the length of minor axis is 8 units.

Therefore, the correct option is B.

8 0

3 years ago

Manny's graph shows that the total snowfall after 2 hours was 3 in.

igor_vitrenko [27]

I think it is c 7 hours

6 0

3 years ago

What I the value of 1/4x² + 4 when x=4

Daniel [21]

Answer:

Step-by-step explanation:

1. To Get the answer one you must first do you one fourth times X one X equals four 1/4×4 equals one

2.One to the second power equals one because 1×1 = 1

3. Lastly add 1 to 4 to get the answer five

6 0

3 years ago