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andriy [413]
3 years ago
7

If y varies inversely with x and y= 17 when z = 11 when y = 11 find y when x=19 .

Mathematics
1 answer:
BaLLatris [955]3 years ago
8 0
Where’s your z? incomplete question
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When a square number is written as a product of prime numbers what can you say about the factors?
Nana76 [90]

Answer:

The square of a prime number is prime

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3 years ago
Which one are these paired to the solution
Soloha48 [4]

Answer:

Option b and d.

Step-by-step explanation:

Given equation : -5x + 4y > -7

Putting the values of x and y one by one in the options,

a) Putting x as 6 and y as 4.

=> -5(6) + 4(4) > -7

=> -30 + 16 > -7

=> -14 > -7

This doesn't satisfy the inequality, hence this couldn't be the ordered pair.

Similarly,

b) Putting x as 5 and y as 5.

=> -5(5) + 4(5) > -7

=> -25 + 20 > -7

=> -5 > -7

This satisfies the inequality, hence this is the ordered pair.

c) Putting x as 3 and y as 2.

=> -5(3) + 4(2) > -7

=> -15 + 8 > -7

=> -7 > -7

This doesn't satisfy the inequality, hence this couldn't be the ordered pair.

d) Putting x as -2 and y as -4.

=> -5(-2) + 4(-4) > -7

=> 10 - 16 > -7

=> -6 > -7

This satisfies the inequality, hence this is the ordered pair.

<em>Hope</em><em> </em><em>it</em><em> </em><em>helps</em><em> </em><em>:</em><em>)</em>

7 0
2 years ago
Find x.<br> Round to the nearest tenth:<br> y<br> 31°<br> X<br> 400 ft<br> x = ? ]ft
Ludmilka [50]
A = 31 degree
Cos 31 degree = 400/x
X = 400/ Cos 31
= 400/0.8572
= 466.7ft
4 0
2 years ago
55.80 dollars with a sale tax of 2.7%
nasty-shy [4]
The answer is $57.31
5 0
3 years ago
Read 2 more answers
Show that 4128 0012 4389 0110 is an invalid VISA number card
valentinak56 [21]

visa cards begin with 4 and then have 13 or 16 digits but here we have a number beginning with 4 and then it has the 15 digits.

<u>Step-by-step explanation:</u>

  1. Each card has a different first digit number. The maximum length of this type of credit card number can be up to 19 digits.
  2. In the visa card starting 6 digits are always said to be the issuer identifier.
  3. The visa cards will have the starting digits as 4 whereas in Mastercard the starting digit is 5 but it has 16 digits numbers.
7 0
3 years ago
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