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3 years ago

Help me please thank you

Mathematics

2 answers:

Alex3 years ago

6 0

The answer is D because you need the horizontal translations in the parenthesis to equal zero

tatiyna3 years ago

5 0

Mortals, begging for help............... *Disgusted face*

Your answer would be D

From: Dark Angel

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The length of a rectangular mural is 2ft. more than three times the width the area is 165 sq. ft. Find the Width And Length

olga nikolaevna [1]

We know that the formula for the area of a rectangle is:

$A=lw$

We know that the area is 165. Now we need to solve for the dimensions.

Let the width of the rectangle be " $x$ "

Then the length of the rectangle is $3x+2$

Substitute.

$(3x+2)(x)=156$

Multiply the terms.

$3x^2+2x=156$

Bring the 156 over.

$3x^2+2x-156=0$

We have to use the quadratic formula to solve this now. Let us restate it:

$x= \frac{-b± \sqrt{b^2-4ac} }{2a}$

Now I'm going to fast forward this because all the rest is boring stuff and substitution. The answer is:

$\frac{ \sqrt{469}-1 }{3}$

Since we cannot have a negative answer, we must cancel out the other answer, which I did not include.

Hope this helped! :)

~Cam943, Junior Moderator

5 0

4 years ago

Read 2 more answers

Help with my math thanks

PtichkaEL [24]

Answer:

9 is correct

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Find where the slope of the curve is defined:<br> x^2y-xy^2=4

Natali [406]

You do the implcit differentation, then solve for y' and check where this is defined.
In your case: Differentiate implicitly: 2xy + x²y' - y² - x*2yy' = 0
Solve for y': y'(x²-2xy) +2xy - y² = 0
y' = (2xy-y²) / (x²-2xy)
Check where defined: y' is not defined if the denominator becomes zero, i.e.
x² - 2xy = 0 x(x - 2y) = 0
This has formal solutions x=0 and y=x/2. Now we check whether these values are possible for the initially given definition of y:
0^2*y - 0*y^2 =? 4 0 =? 4
This is impossible, hence the function is not defined for 0, and we can disregard this.
x^2*(x/2) - x(x/2)^2 =? 4 x^3/2 - x^3/4 = 4 x^3/4 = 4 x^3=16 x^3 = 16 x = cubicroot(16)
This is a possible value for y, so we have a point where y is defined, but not y'.
The solution to all of it is hence D - { cubicroot(16) }, where D is the domain of y (which nobody has asked for in this example :-).
(Actually, the check whether 0 is in D is superfluous: If you write as solution D - { 0, cubicroot(16) }, this is also correct - only it so happens that 0 is not in D, so the set difference cannot take it out of there ...).
If someone asks for that D, you have to solve the definition for y and find that domain - I don't know of any [general] way to find the domain without solving for the explicit function).

3 0

4 years ago

How to find the value of each trigonometric ratio

Mkey [24]

D

First draw a line from c to the opposite side which is 16
So 16 is the opposite 30 is adjacent 34 is hypotenuse

Cosine is adjacent over hypotenuse 30/34 reduce by 2 2x 15=30 and 2x17=34
Hope you understand so you can do it next time

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3 years ago

To teach her class about different forms of reproduction and how they relate to diversity among offspring, Mrs. Griffin asked he

Nostrana [21]

Answer:

Reproduction

Step-by-step explanation:

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3 years ago