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NikAS [45]
2 years ago
9

Substitution:(x=2y) (y=x-2)

Mathematics
1 answer:
GaryK [48]2 years ago
5 0

Answer:

2=y

4=x

Step-by-step explanation:

x=2y

y=2y-2

add 2 to both sides

2+y=2y

subtract y from both sides

2=1y

2=y

You might be interested in
90,175,087,309 in expanded form
NemiM [27]
90,000,000,000
+ 0
+ 100,000,000
+ 70,000,000
+ 5,000,000
+ 0
+ 80,000
+ 7,000
+ 300
+ 0
+ 9

Expanded Factors Form:
9 × 10,000,000,000
+ 0 × 1,000,000,000
+ 1 × 100,000,000
+ 7 × 10,000,000
+ 5 × 1,000,000
+ 0 × 100,000
+ 8 × 10,000
+ 7 × 1,000
+ 3 × 100
+ 0 × 10
+ 9 × 1

Expanded Exponential Form:
9 × 1010
+ 0 × 109
+ 1 × 108
+ 7 × 107
+ 5 × 106
+ 0 × 105
+ 8 × 104
+ 7 × 103
+ 3 × 102
+ 0 × 101
+ 9 × 100

Word Form:

ninety billion, one hundred seventy-five million, eighty-seven thousand, three hundred nine
8 0
3 years ago
Read 2 more answers
Chelsea plays soccer 4/12 of the year and swims 3/12 of the year before taking a break from playing sports what fraction of the
Kay [80]

Answer: 7/12

Step-by-step explanation:

From the question, we are told that Chelsea plays soccer 4/12 of the year and swims 3/12 of the year before taking a break from playing sports.

The fraction of the year that Chelsea spend participating in sports will be the addition of the fraction used for playing soccer and the fraction use for swimming. This will be:

= 4/12 + 3/12

= 7/12

4 0
2 years ago
The equation |ax + b| = c must have ?
ArbitrLikvidat [17]

Answer:

0, 1, or 2 solutions

Step-by-step explanation:

The equation |ax + b| = c

The equation have absolute value symbol

Absolute value always gives us the positive number.

For absolute value function , we need to consider two cases

positive and negative.

|x|=x  for positive ,  and |-x|=x for negative case

For negative case we include negative sign

So  |ax + b| = c can be written as 2 equations

(ax+b)=c                                  (ax+b)=-c

So we will get maximum of 2 solutions

The equation |ax + b| = c must have 0, 1, or 2 solutions

4 0
3 years ago
Read 2 more answers
F (x) = x^2 + 2x - 5<br> g(x) = 2x + 4<br> What is (f• g)(x)?
Vilka [71]

Answer:

Step-by-step explanation:

This is a composite function, f(g(x)). This means, working from the inside function to the outside, we will take the function g and plug it in for x in the f function. g(x) = 2x + 4. We will plug that into f(x) and evaluate f(2x+4):

f(g(x))=(2x+4)^2+2(2x+4)-5 and I imagine your teacher has you simplify completely. We FOIL and distribute to get

f(g(x))=4x^2+16x+16+4x+8-5 which, by combining like terms, give us

f(g(x))=4x^2+20x+19

5 0
3 years ago
How do I find the period of y = -2 cos 0.5x
nevsk [136]
Use the form (bx-c)+ d to find the amplitude , period shift, phase, and vertical shift.
amplitude:2 
period:12.56637061
phase shift : 0(0to the right ) 
vertical shift:0 
hope it helps!
please give me brainlest if its right .
thank.
4 0
3 years ago
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