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telo118 [61]
3 years ago
10

Raul is performing an experiment. He pours water into a glass and measures the temperature of the water at 72.3°F. Then he adds

a few ice cubes to the glass of water. He measures the temperature of the water again and finds that it has changed by -39.1°F. Write an expression that represents the temperature (in degrees Fahrenheit) of the water after Raul added the ice cubes. Write the expression as the sum of two numbers.
Mathematics
2 answers:
Tatiana [17]3 years ago
6 0

i'm sowwie

i didnot understannd your question

allochka39001 [22]3 years ago
3 0
This is what y’all learning in middle school now?! i’m sorry
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Please help me answer this :) and explain how you got your answer ! ( will give brainslt )
Bess [88]

Answer: y = - 0.4 x - 4.5

Step-by-step explanation:

Equation y=mx+b

m is the slope

x is *ANY* x coordinate

y is *ANY* y coordinate

b is y intercept or WHERE the point is on the Y AXIS

Lets look at the given:

Slope (m) is -2/5

Passes through point 15, -9/2

As you can see, the point goes through the Y axis at (-9/2)

Our equation is y = - 0.4 x - 4.5

5 0
2 years ago
What is 0.685 in expanded notation
Darina [25.2K]
0 + (6/10) + (8/100) + (5/1000)
8 0
3 years ago
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What’s the answer to the question
hammer [34]
A maybe? I don’t know honestly
6 0
3 years ago
Determine the next step for solving the quadratic equation by completing the square
GaryK [48]

Answer:

  • The two solutions are:           x=\frac{1}{2}+/-\frac{\sqrt{7} }{2}

  • The next and every step are below.

Explanation:

1. -3=-2x^2+2x    : Given (addition property / add - 3 to both sides)

2. -3 = - 2(x^2-x)    : Given (commom factor - 2)

3. -3-1/2=-2(x^2-x+1/4)

    To obtain the perfect square it was added the square of half of the coefficient of x: (1/2)² = 1/4, inside the parenthesis.

Since, the terms inside the parentthesis are multiplied by - 2, you have to add - 2 (1/4) = - 1/2 to the left side of the equation.

4. Now, you have that the trinomial x² - x + 1/4 is a square perfect trinomial which is factored as (x - 1/2)² and get the expression:

-7/2=-2(x-1/2)^2

5. Divide both sides by - 2 to get the next expression:

-7/4=(x-1/2)^2

6. The last step is to extract squere root from both sides of the equality:

(x-1/2)=+/-\sqrt{\frac{7}{4}}\\ \\ x-1/2=+/-\frac{\sqrt{7} }{2}\\ \\ x=\frac{1}{2}+/-\frac{\sqrt{7} }{2}

8 0
2 years ago
Help plz WILL MARK Brainlyest
Alex17521 [72]

Answer:

11/12

Step-by-step explanation:

7/6= 14/12

8/6= 16/12

the number in between the two is 15/12 then it already shows you what to subtract by (4/12) so 15/12-4/12=11/12

8 0
2 years ago
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