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xenn [34]
3 years ago
13

Please help with math

Mathematics
2 answers:
irina [24]3 years ago
7 0

Answer:A

-13/21

Step-by-step explanation:

Ilia_Sergeevich [38]3 years ago
3 0

Answer: D

Step-by-step explanation:

it's an obvious answer

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Find the total mass of the triangular region shown below. All lengths are in cm, and the density of the region is sigma(x) = 1 +
anastassius [24]

Answer:

3 grams

Step-by-step explanation:

We are going to take the mass of a bunch of little strips below the triangle "roof." To do this, we must figure out what formula for the mass we'll use, in this case, we'll use:

Mass of strip = denisty * area = (1+x)*y*deltax grams

now, because the "roof" of the triangle contains two different integrals (it completely changes direction), we will use TWO integrals!

**pretend ∈ is the sum symbol

Mass of left part = lim x->0 ∈ (1+x)*y*deltax = inegral -1 to 0 of (1+x)*3*(x+1) = 3 * integral -1 to 0 of (x^2 + 2x + 1) = 3 *  1/3 = 1

Mass of left part = lim x->0 ∈ (1+x)*y*deltax = inegral 0 to 1 of (1+x)*3*(-x+1) = 3 * integral 0 to 1 of (-x^2 + 1) = 3 * 2/3 = 2

Total mass = mass left + mass right = 1 + 2 = 3 grams

8 0
3 years ago
URGENT
Stolb23 [73]

Answer:

what's wrong with her??

Step-by-step explanation:

also okayy

3 0
3 years ago
Read 2 more answers
What is the quotient in scientific notation?
levacccp [35]
The answer is 3.6×10^2
7 0
2 years ago
Solve for x.<br> y=x-12<br> y= 14
masya89 [10]

Answer:

26

Step-by-step explanation:

Check answer:

14+12= 26

26-12=14

8 0
3 years ago
Read 2 more answers
Please help me, very important 20 points!
kipiarov [429]

x=96


all interior angles equal 180


Subtract exterior andgles by 180 to get interior angles because they are supplementary

180-134=46

180-130=50


Get the third angle inside the triangle

180-50-46=84


subtract by 180 to get x because they are supplementary

180-84=96


Therefore x =96

4 0
3 years ago
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