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zysi [14]
3 years ago
7

Can someone please help me with this?? im trying to correct answers and i need help

Mathematics
1 answer:
vivado [14]3 years ago
6 0

Answer:

90° is correct answer. :)

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The area of a circle is 497 squared meters.<br> What is the radius, in meters?
frutty [35]

Answer: r= 12.58m

Step-by-step explanation:

100% SURE

7 0
3 years ago
Given $m\geq 2$, denote by $b^{-1}$ the inverse of $b\pmod{m}$. That is, $b^{-1}$ is the residue for which $bb^{-1}\equiv 1\pmod
goblinko [34]

(2+3)^{-1}\equiv5^{-1}\pmod7 is the number <em>L</em> such that

5L\equiv1\pmod7

Consider the first 7 multiples of 5:

5, 10, 15, 20, 25, 30, 35

Taken mod 7, these are equivalent to

5, 3, 1, 6, 4, 2, 0

This tells us that 3 is the inverse of 5 mod 7, so <em>L</em> = 3.

Similarly, compute the inverses modulo 7 of 2 and 3:

2a\equiv1\pmod7\implies a\equiv4\pmod7

since 2*4 = 8, whose residue is 1 mod 7;

3b\equiv1\pmod7\implies b\equiv5\pmod7

which we got for free by finding the inverse of 5 earlier. So

2^{-1}+3^{-1}\equiv4+5\equiv9\equiv2\pmod7

and so <em>R</em> = 2.

Then <em>L</em> - <em>R</em> = 1.

6 0
3 years ago
suppose x and y vary inversely and y=10 when x=4. write a function that models the variation then find y when x =90
ankoles [38]
X = k/y
4 = k/10
k = 4 x 10 = 40
Thus, x = 40 / y

90 = 40 / y
y = 40/90 = 4/9
4 0
3 years ago
Pls Help me please!!
natta225 [31]
It should be 286.9190
3 0
1 year ago
What is the difference of 13 and 5 times a number that equals 29
Anit [1.1K]
(13 - 5n) = 29
-5n = 29 - 13
-5n = 16
n = -16/5 or - 3 1/5
3 0
3 years ago
Read 2 more answers
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