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konstantin123 [22]
3 years ago
6

PLEAASE HELP I HAVE LITERALLY NO TIME LEFT I WILL GIVE BRAINLY SOON PLS HELP

Mathematics
1 answer:
Anika [276]3 years ago
5 0

Answer:

x=8,10if this helps then your welcome if not I apologize

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Find the probability of drawing a green card, not replacing it, and then drawing another green card.
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Does it tell the total number of cards in the bag?
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What’s the volume of the cone
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Step-by-step explanation:

4 0
3 years ago
Plz answer me i want help​
mel-nik [20]

Answer:

Rs 19.20

Step-by-step explanation:

Buying price = Rs 20

Profit = 20% = 0.20 × 20 = Rs 4

Selling price = buying price + profit = Rs 20 + Rs 4 = Rs 24

He wants to make a 25% profit.

Let's say he should buy the pen at Rs 'a' in order to make that amount of profit.

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3 years ago
Use implicit differentiation to find an equation of the tangent line to the curve at the given point. 7x2 + xy + 7y2 = 15, (1, 1
riadik2000 [5.3K]
Assume y=y(x).

7x^2+xy+7y^2=15
\dfrac{\mathrm d}{\mathrm dx}[7x^2+xy+7y^2]=\dfrac{\mathrm d}{\mathrm dx}[15]
14x+y+x\dfrac{\mathrm dy}{\mathrm dx}+14y\dfrac{\mathrm dy}{\mathrm dx}=0
\dfrac{\mathrm dy}{\mathrm dx}(x+14y)=-(14x+y)
\dfrac{\mathrm dy}{\mathrm dx}=-\dfrac{14x+y}{x+14y}

The slope of the tangent line to the curve at (a,b) is then -\dfrac{14a+b}{a+14b}, so the tangent to (1,1) has slope

\dfrac{\mathrm dy}{\mathrm dx}\bigg|_{x=1,y=1}=-\dfrac{15}{15}=-1

The point-slope form of the tangent line is then

y-1=-(x-1)\iff y=-x+2
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3 years ago
Erica used friendly numbers to find 43-19. She added 1 to 19 and subtracted 1 from 43. What is Erica's error?
Naily [24]
I think that it is....
42-20=22
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4 years ago
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