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VladimirAG [237]
2 years ago
11

Does anyone know how to do this ​

Mathematics
1 answer:
Sloan [31]2 years ago
7 0

Answer:

x = 2 and y =

Step-by-step explanation:

y = 2x - 1

y = -x + 5

2x - 1 = -x + 5

2x + x = 5 + 1

3x = 6

x = 6/3

x = 2

y = 2(3)-1

y = 5

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How
andrey2020 [161]

Answer: 7800

Step-by-step explanation:

As English alphabet has 26 letters.

So , Choices for First character in the code = 26

The choices for digits = 10  (From 0 to 9)

So , choices for second character = 10  (Middle two characters must be numbers)

choices for third character = 10            (Middle two characters must be numbers)

Choices for last character = 3   (the  last character must be a 1, 3, or 7)

By Fundamental principle of counting , the total number of four character codes can be generated =

(Choices for First character)x (choices for digits) x(choices for digits) x(Choices for last character)

= (26) (10)(10)(3) =7800

Hence, the total number of character codes can be generated= 7800

6 0
3 years ago
Adding negative numbers<br> Add.<br> -3+ (-2) =
djyliett [7]

Answer:

-5

Step-by-step explanation:

its the same as adding positive numbers but with a minus sign so -3+(-2)= -5

7 0
3 years ago
Read 2 more answers
An entomologist writes an article in a scientific journal which claims that fewer than 16 in ten thousand male fireflies are una
bazaltina [42]

Answer:

a) H0: p > 0.0016

H1: p ≤ 0.0016

Step-by-step explanation:

A null hypothesis states that there is no relation between two variables, it's what the researcher wants to discredit.

On the other hand, the alternative hypothesis is what the researcher tries to prove.

<u>The claim of this entomologists is that fewer than 16 in ten thousand male fireflies are unable to produce light due to a genetic mutation. Therefore, this claim is what he wants to prove and it would be the alternative hypothesis.</u>

H1: p ≤ 0.0016

The null hypothesis would be the opposite of the alternative hypothesis and therefore it would be:

H0: p > 0.0016

6 0
3 years ago
Choose the equation below that represents the line passing through the point (1, −4) with a slope of one half.
AVprozaik [17]

Answer:

the equation would be y=1/2x-9/2

Step-by-step explanation:

next time try to put the answers like the question did because that's always helpful

6 0
2 years ago
3. If x2 + 4 = 29, then x2 - 4 = ?<br> A. 5<br> B. 121<br> C.<br> 21<br> D. 25<br> E. 33
EastWind [94]
Answer is c as x is 25/2
7 0
3 years ago
Read 2 more answers
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