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Radda [10]
3 years ago
5

Could Somone check if this is right.?

Mathematics
1 answer:
Bond [772]3 years ago
6 0
Y=4
X=2. Fix the y . To do that set the x=0
2(0) + y =4
0+y=4
Therefore y=4
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Use the substitution method to solve the system of equations. Please help me get this question right
vaieri [72.5K]

Answer:  B (2,1)

You know what y is (x-1) so you substitute that for y in the other equation.

3x+ ((4)(x-1))=10

3x+4x-4=10

7x=14

x=2

Then put x=2 into y=x-1

y=2-1

y=1

7 0
3 years ago
A motorboat, that has speed of 10 km/hour in still water, left a pier traveling against the current of the river. Forty-five min
Nutka1998 [239]

Answer:

2 km/h

Step-by-step explanation:

  • distance = speed × time
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Let c represent the speed of the current of the river in km/h. Then the speed of the boat upstream is (10-c). In 3/4 hour, the distance traveled upstream is ...

... distance upstream = (3/4)·(10 -c)

The time taken to travel the same distance downstream is given as 3 hours. The speed in that direction is c, so we have ...

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7 0
4 years ago
Which of the following polynomials has x = − 2/7 and x = 0 as solutions?
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Answer:

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Step-by-step explanation:

8 0
3 years ago
Savannah is 24 years older than Ryan, while Sebastian is 5 times as old as Ryan. If Savannah and Sebastian are twins, which equa
IRISSAK [1]

Answer: I think the answer would be b) 24+2x=5x

sry if it's wrong


3 0
3 years ago
I need help, quick, it's Algebra but super easy, thank you.
horsena [70]
16 - 2(2w + 1) = 8w - 2(8+w)
     16 - 4w - 2 = 8w - 16 - 2w
       - 4w + 14 = 6w - 16
                  14 = 10w - 16
                  30 = 10w
                  /10    /10
                     3 = w

I think so lol
3 0
3 years ago
Read 2 more answers
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