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serg [7]
3 years ago
11

The perimeter of a rectangle is 32. The width is four less than the length. Find the length of the rectangle.

Mathematics
1 answer:
Kisachek [45]3 years ago
5 0

Step-by-step explanation:

all the explanation is in the photo

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Evaluate the trigonometric funtion of the angle theta​
jeka57 [31]
The last side would be 10
8 0
3 years ago
What is the value of this expression when g = 5 and h = 1? 3 index square root 2g-2h+g A. 13 B. 16 C. 9 D. 7
Troyanec [42]
The value of the expression is A.13
3 0
3 years ago
Help! Please? The ratio (by volume) of milk in a certain solution is 3 to 8. If the total volume of the solution is 187 cubic fe
DIA [1.3K]
We know that the total volume of the solution is 187 cubic feet.
187=3x+8x
187=11x
17=x
Now we know that the ratio 3 to 8 is 51 to 136.
Double check, (3*17)+(8*17)=187.
I'm not sure which part of the ratio is water, but knowing this information, you should be able to solve it. I believe it may be this:
The total volume of milk is 51. If the rest of the solution is water, then 187-51=136.
6 0
4 years ago
1<br>Determine the value of k if g(x)=4x+k is a tangent to f(x)=-x²+8x+20​
tangare [24]

Answer:

k=24

Step-by-step explanation:

The tangent of the function f at x=a, can be found by differentiating f w.r.t. x and then replacing x with a.

f=-x^2+8x+20

Differentiating both sides:

f'=(-x^2+8x+20)'

By sum rule:

f'=(-x^2)'+(8x)'+(20)'

By constant multiple rule:

f'=-(x^2)'+8(x)'+(20)'

By constant rule:

f'=-(x^2)+8(x)'+0

By power rule:

f'=-2x+8

f' at x=a is -2a+8

This is the slope of any tangent line to the curve f.

The slope of g is 4 if you compare it to slope intercept form y=mx+b.

So we gave -2a+8=4.

Subtracr 8 on both sides: -2a=-4

Divide both sides by -2: a=2

The tangent line to the curve at x=2 is y=4x+k.

To tind y we must first know the y-coordinate of the point of tangency.

If x=2, then

f(2)=-(2)^2+8(2)+20=-4+16+20=12+20=32

So the point is (2,32).

g(x)=4x+k and we know g(2)=32.

This gives us:

32=4(2)+k

32=8+k

k=32-8

k=24

6 0
3 years ago
Kevin had to make 14 visits to the dentists last year to take care of his braces. Each visit cost #124. How much did the visits
VMariaS [17]

Answer:

Step-by-step explanation:

Let's look at simpler cases.  If there was just one visit that would be 124.  if there were two, each time he'd have to pay 124 so it's 124+124 = 248.  So this is multiplication, because next would be three, which is 124+124+124 or 124 time 3.

In total then it's 124*14.  You may usually use an x for multiplication, and if you do just keep in mind * can also be used.  or, if something is inside of parenthesis like this 124(14) or (124)14.  If you need help doing the multiplication let me know.  

7 0
3 years ago
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