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Afina-wow [57]
3 years ago
14

Twice a number increased by 3 is 45. What is the number?

Mathematics
2 answers:
Arada [10]3 years ago
7 0
135 because 45x3=135 at least I'm sure this is what you mean
irinina [24]3 years ago
5 0

2N+3=45

2N = 42

N = 42/2 = 21

N = 21

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How many different arrangements of 5 letters can be made from the 26 letters of the alphabet?
VikaD [51]
Answer: P(26,5).

That is all the possible combinations of 5 letters made out from 26 letters.

That is 26! / [ 5! ( 26 - 5)! ] = 26! / [5! 21! ] = 26*25*24*23*22*21! / [ 5! 21!] =

= 26*25*24*23*22 / [5*4*3*2*1] = 65,780 arrangements.


5 0
3 years ago
I need help pls WILL GIVE BRAINLIEST
Alex73 [517]

Answer: (3,-2)

Step-by-step explanation:

-3x-7y=5\\15x+6y=33

5(-3x-7y)=5(5)\\-15x-35y=25

new system:

-15x-35y=25\\15x+6y=33

add.

-29y=58\\y=-2

plug in -2 for y

-3x-7(-2)=5\\-3x+14=5\\-3x=-9\\x=3

system:

(3,-2)

4 0
2 years ago
Read 2 more answers
What is the point slope of an equation with slope of 3/5 that passes through the point (10,-2)
Verdich [7]
The answer would be B. It gives you the slope and a point on the graph so use that to your advantage. All of the answers show the slope and the slope in the right place, so for now it can be any of them. Then we get to the point (10,-2). For point slope form you would switch the signs for both x and y. So the Y would now be +2 and x would be -10. Y goes together with y, and X goes together with x. In this case y+-y= slope(X+-x) Substitute in for them. Y+2=3/5(X-10)
4 0
3 years ago
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Which of the statements best compares the pairs of perpendicular and parallel lines?
Sergeu [11.5K]
Wich statements. Let me know

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3 years ago
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HURRY PLS ANSWER NOW!!
ivolga24 [154]

Answer:

91 in2

Step-by-step explanation:

11+15 over 2 , times by 7 equals 91 ??

8 0
2 years ago
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