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Alecsey [184]
3 years ago
7

3х +4y = 15 3х -y= 30 can someone help please

Mathematics
2 answers:
Alla [95]3 years ago
6 0

Answer:

have you tried photomath I'll do ut then try to give you an answer

german3 years ago
3 0

Answer:

1. x = -4/3y + 5

2. x = 1/3y+10

Step-by-step explanation:

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What does the expression 5n represent​
sashaice [31]

Answer:

5xn or 5(n) or 5n

Step-by-step explanation:

5 0
3 years ago
Identify the coordinates of the vertices of the polygon.Identify the coordinates of the vertices of the polygon.
tangare [24]

Answer:

A

Step-by-step explanation:

The coordinates are (3,5),(7,-3),(0,-5),(-3,-4) and (-6,1). So the correct option is A

3 0
3 years ago
Can some show the steps and the answer please I really need help tell me how you get it and the answer
Tems11 [23]

Answer:

Step-by-step explanation:

here is some helpful trig function reminders.. copy this and keep it

Use SOH CAH TOA to recall how the trig functions fit on a triangle

SOH: Sin(Ф)= Opp / Hyp

CAH: Cos(Ф)= Adj / Hyp

TOA: Tan(Ф) = Opp / Adj

they ask how long is the ladder

they give us the opposite side (8) and the adjacent side (6)  

and the Hyp is the length of the ladder.   They expect you to sort this out in your head.  :/  

there is two steps .. we'll solve for the angle.. then we can use that to find the Hyp side..(long side of triangle)  which is the ladder length

Tan(Ф) = Opp / Adj

Tan(Ф) = 8 / 6

Ф = arcTan(8 / 6)

Ф ≈ 53.130°

now lets use that angle with one of the other trig functions to find the Hyp.. sin or cos will work b/c we have both the opp and the adj sides lengths.  let's use cos

Cos(53.130) = 6 / Hyp

Hyp = 6 / Cos(53.130)   ( I just used algebra to swap the two)

Hyp = 9.99997

the ladder will be 10' long.  

ask in the comments if you need any more explaining  

5 0
3 years ago
What is the product of -2/7 and -3/6
Andrew [12]

Hey!

------------------------------------------------

Product means multiplication.

-2/7 * -3/6 = -6/42 = -1/7

------------------------------------------------

Hence, the answer is \Large\boxed{\mathsf{-1/7}}

------------------------------------------------

Hope This Helped! Good Luck!

6 0
3 years ago
During the quarantine, the Jones family installed a rectangular pool in their backyard that was 10 feet wide and 15 feet long. T
olganol [36]
15 feet martins family work for with the dodo code for a mask is a horrible thing to ware a little kid in a sweat room or the room with the kids and then they have a white black brown brown green green orange brown orange green green orange orange brown orange orange orange
5 0
3 years ago
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