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svlad2 [7]
3 years ago
8

I don't know how to do #86-#88. Any help?

Mathematics
1 answer:
SOVA2 [1]3 years ago
3 0
86 and 87 utilize the Pythagorean theorem. Where those tangent lines meet the circle forms a right angle. So you have a side length of 6 and a hypotenuse of 22. So the missing side length is 21.16.  For 87, its the same thing, but you have the 2 legs but are missing the hypotenuse.
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Anybody know the answer plzzzx i need help plzzzz
Allisa [31]
B) is the correct because the definition of Isosceles indicates to the two sides that are congruent to each other.
hope, help and heal.
5 0
4 years ago
- x + 4y + 4 = 0.<br>x - 4y = 4​
maw [93]

Step-by-step explanation:

-x+4y=4

x-4y=4

no solution

3 0
3 years ago
The rate at which a quantity of a radioactive substance decays is proportional to the quantity of the substance. The constant of
Butoxors [25]

Answer:

\frac{dN}{dt} = λN           N(0) = 6

N(t) = N₀e^(λt)

Applying the inital value condition

N(t) = 6e^(λt)

Step-by-step explanation:

Summarizing  the information briefly and stating the  variables in the problem.

t = time elapsed during the decay

N(t) = the amount of the radioactive substance remaining after time t

λ= The constant of proportionality  is called the decay constant or decay rate

Given the initial conditions

N(0) = N₀ = 6

The rate at which a quantity of a radioactive substance decays (\frac{dN}{dt}) is proportional to the quantity of the substance (N)  and λ is the constant of proportionality  is called the decay constant or decay rate :

\frac{dN}{dt} = λN          

N(t) = N₀e^(λt) ......equ 1

substituting the value of  N₀ = 6 into equation 1

N(t) = 6e^(λt)

3 0
3 years ago
How do I solve for X?
ladessa [460]

All the angles should add up to 360°.

8x+10x+9+21x-12+90=360°

Group like terms together.

So,8x+10x+21x+9+90-12=360

39x+87=360

39x=360-87

39x=273

x=7

3 0
3 years ago
If I sell 80 books for $2 how much money will I make?
dolphi86 [110]

Answer:

$160

Step-by-step explanation:

80 * $2

$160

Answer:  $160

5 0
3 years ago
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