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3 years ago

X – y +z = 5 x + y + 2z = 19 x + y + z = 15

Mathematics

1 answer:

otez555 [7]3 years ago

8 0

Answer:

x=5,y=5,z=5

Step-by-step explanation:

x=15-y-z

15-y-z-y+z=5

15-2y=5

y=5

x+y+z=15

15-2y+y+z=15

15-10+5+z=15

z=5

x-y+z=5

x-5+5=5

x=5

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NISA [10]

Answer:

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Step-by-step explanation:

The "^means exponet" Hope I made your day

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3 years ago

Read 2 more answers

I need blank 1 and blank 2

lord [1]

Answer:

Blank 1: 40

Blank 2: 10

Step-by-step explanation:

You can start by representing the speed of the water as x and the speed of the dolphin as y, and writing an equation.

y+x=50

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Adding these two equations together, you get:

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y=40 for the speed of the dolphin in still water. Now, you an use one of the previous equations to find the speed of the current.

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Hope this helps!

8 0

3 years ago

Which shows the correct substitution of the values a b and c from the equation -2 equals negative X Plus x squared minus 4 into

kondor19780726 [428]

-2=-x+x square-4
firstly regroup the equation
x square-2x+x-2=0
x square-x-2=0
multiply the first term by the last term.(I.e x square multiply by -2=-2x square)
product of factor = -2x 1
sum of factor= -2x+1(x)= -1
x square -2x+x-2=0
open the bracket:
x(x-2)+1(x-2)=0
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Therefore; x=-1 or x=2

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4 years ago

What digits can be in the ones place of a number that has 5 as a factor?

Sophie [7]

The digits that can be in the ones place is 1 and 5.... I think.

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3 years ago

Write out the first four terms of the series to show how the series starts. Then find the sum of the series or show that it dive

Nostrana [21]

Answer:

The first four terms of the series are

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