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pishuonlain [190]
3 years ago
12

Pleas help me:)thank you so much<3

Mathematics
1 answer:
malfutka [58]3 years ago
6 0

Step-by-step explanation:

ratios of lengths = 4/3

ratios of area = 16/9

plz mark my answer as brainlist plzzzz vote me also plzzzz .... Hope this helps you ...

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For which interval is the average rate of change of f(x) negative?
Aloiza [94]
Option C. It’s where it’s decreasing over the entire interval.
7 0
3 years ago
Guys pls ı need help really....
cestrela7 [59]

Answer:

Step-by-step explanation:

Calculus....finally something FUN to answer!

This is integration, but here you have the area under the curve, you just don't have the upper bound. Setting that problem up looks like this:

28=\int\limits^b_1 {7x} \, dx  and using the First Fundamental Theorem of Calculus, that will integrate to look like this:

28=\frac{7x^2}{2} from 1 to b and applying the FTC:

28=\frac{7b^2}{2}-\frac{7}{2}  Multiplying everything by 2 to get rid of the denominators gives you:

56=7b^2-7\\\\56=7(b^2-1)\\8=b^2-1\\9=b^2\\b=3

5 0
2 years ago
Help me please,Thanks
arsen [322]
The answer is (7,27)

Hope this helps. :)
4 0
3 years ago
Read 2 more answers
Sally rents a life jacket for a one time fee of 5 dollars. Then she rents a canoe for 15 dollars per hour. Which expression repr
Lunna [17]

Answer:

15h +5

Step-by-step explanation:

let h be the total hours.

the total cost for h hours would be 15h

a on time 5 dollars for a jacket

expression for total cost 15h +5

7 0
3 years ago
Read 2 more answers
X^2 + 4y^2 =100; 4y - x^2 = -20
deff fn [24]
x^2+4y^2=100\implies x^2=100-4y^2
\implies 4y-(100-4y^2)=-20
\implies 4y^2+4y-80=0
\implies y^2+y-20=0
\implies (y-4)(y+5)=0
\implies y=4,y=-5

When y=4, you have

4(4)-x^2=-20\implies x^2=36\implies x=\pm6

When y=-5,

4(-5)-x^2=-20\implies x^2=0\implies x=0

So there are three solutions, (x,y)\in\{(6,4),(-6,4),(0,-5)\}.
7 0
3 years ago
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