[6.02] For the following system, if you isolated x in the first equation to use the Substitution Method, what expression would you substitute into the second equation?-x - 2y = -4
3x + y = 12

Answers

Answer 1

Answer: To use the substitution method we need to convert one equation in terms of a certain variable and substitute this equation to the other equation. For this case we are asked to substitute the first equation to x in the second equation. Therefore, the equation to substitute is:

-x - 2y = -4
x = 4 - 2y

Answer 2

Answer:

Answer:B

Step-by-step explanation:

2y-4

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Which point satisfies the system of equations y = 3x − 2 and y = -2x + 3? A. A B. B C. C D. D

Answers

Only D because if you set both equations equal to each other and solve for x, x=1. The only point where x=1 is D.
If you’re still not convinced, plug 1 back into the equations and you get y=1 for both.
Therefore, the answer is D.

CJ wrote several pairs of values that he thought wereequivalent. Which of his equations are correct? Pick all that
apply.
1.25 = 125%
0.03 = 30%
0.001 = 1%
60%
50%
22 23 를
66.6%
Guys I need help I’m gonna fail math

Answers

Answer:

125% correct

3/5 correct

2/3 correct

Step-by-step explanation:

Here, we want to pick the appropriate conversion from percentage to fraction:

To convert from percentage to fraction, we simply divide by 100

125% = 125/100 = 1.25 correct

30% = 30/100 = 0.3 not 0.03 wrong

1% = 1/100 = 0.01 not 0.001 wrong

60% = 60/100 = 3/5 correct

50% = 50/100 = 1/2 not 1/4 wrong

2/3 = 2/3 * 100 = 200/3 = 66.66667% correct

Answer:

B.C,D

Step-by-step explanation:

If h(x)=x-7 and g(x)=x^ which expression is equivalent to (g•h)(5)?A) (5-7)^
B) (5)^-7
C) (5)^ (5-7)
D) (5-7)x^

Answers

Answer:

A (5-7)^

Step-by-step explanation:

We have the next two functions h(x)=x-7 and g(x)=x^. We need to find (g•h) that is equal to g(h(x)) then:

(g•h)=g(h(x))=(x-7)^

Finally in the poin x=5 we have:

(g•h)=g(h(x))=(x-7)^

(g•h)=g(h(5))=(5-7)^

Then the answer is A

Assuming that by ^, you mean ², here's how you do this:
(g•h)(5) means that you need to solve g(h(5)). So, you plug 5 in for x in h(x), then you plug the solution of that in for x in g(x) like so:
$h(5)=5-7 \n g(h(5))= (5-7)^(2)$

The answer is A. (5-7)²

Hope this helps!

Walter is 43 years old his daughter Paulette is 7. In how many years will Paulette be one-third of Walters age

Answers

The answer is 14 when rounded to the nearest whole number, to get this you simply must divide 43 by 3 which equals to 14.333.

A martini glass has the shape of a cone (on a stem). If 1cm^3 =1mL, how many milliliters of liquid can the glass hold. Use x=3.14 (10.9 cm left to right) and (4.8cm top to bottom)