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Luda [366]
3 years ago
15

What's the perimeter of this shape?​

Mathematics
1 answer:
Strike441 [17]3 years ago
7 0

Answer:

It is 20m.

Step-by-step explanation:

The perimeter equals the sum of all the sides. So 5+7+3+4+1

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Find the value of 3a-4b if a=-2 and b=1
iVinArrow [24]
Hey there!
Let's plug in our values:
3(-2) - 4(1) =
-6-4 = 
-10.
Hope this helps!
8 0
3 years ago
The percent of concentration of a certain drug in the bloodstream x hours after the drug is administered is given by K(x) 5x/x^2
Olegator [25]

Given :

The percent of concentration of a certain drug in the bloodstream x hours after the drug is administered is given by K(x) = \dfrac{5x}{x^2+9}.

To Find :

Find the time at which the concentration is a maximum. b. Find the maximum concentration.

Solution :

For maximum value of x, K'(x) = 0.

K'(x) = \dfrac{5(x^2+9)- 5x(2x)}{(x^2+9)^2}=0\\\\5x^2+45-10x^2=0\\\\5x^2 = 45\\\\x = \pm 3

Since, time cannot be negative, so ignoring x = -3 .

Putting value of x = 3, we get, K(3) = 15/( 9 + 9) = 5/6

Therefore, maximum value drug in bloodstream is 5/6 at time x = 3 units.

Hence, this is the required solution.

5 0
3 years ago
Can someone help me with these 2. Will Mark brainliest.
Ostrovityanka [42]

<em>1.) </em><em>3</em>

<em>Take the given equation </em>

<em>2y=6x-8</em>

<em>Now divide by 2 on each side</em>

<em>y=</em><em>3</em><em>x-4</em>

<em>Slope is </em><em>3</em>

<em>2.) y=1/3x-4</em>

6 0
3 years ago
Multiply the first expression by the second:<br><br>a2 + b2 + c2 - ab - bc - ca, a + b+ c​
Stels [109]

Answer:

https://orion.math.iastate.edu/dept/links/formulas/form1.pdf

Step-by-step explanation:

8 0
3 years ago
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PLEASE ANSWER THIS!!! I WILL GIVE BRAINLIEST!!!;))
just olya [345]

Distributive property

6 0
4 years ago
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