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3 years ago

5

At the start of an experiment, the temperature of a solution was -12°C. During the experiment, the temperature of the solution

2 answers:

-BARSIC- [3]3 years ago

6 0

Answer:

5°C

Step-by-step explanation:

I's hope this helps you.

Reil [10]3 years ago

3 0

Answer:

5 celsius degrees

Step-by-step explanation:

According to the statement the first temperature is -12 C, the temprerature rose 4 hours 5 C each hour, it means it rose (4x5) 20 C. At this point the temperature is (-12+20) 8 C and at the last the temperature goes down 3 C then the final temperature is (8-3)= 5 °C

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suppose that during one period of extreme cold the average daily temp decreased 1 1/2 Fahrenheit each day how many days did it t

Nina [5.8K]

Answer:

The temperature decreased by 9 °F in <u>6 days.</u>

Step-by-step explanation:

Let the number of days it takes for the temperature to decrease by 9 °F be $x$ .

Given:

Average daily temperature decreases by $1\frac{1}{2}$ °F.

Decrease of temperature in 1 day = $1\frac{1}{2}$ = 1.5 °F.

∴ Decrease in temperature in x days is $1.5x$ .

Now, as per question, decrease in temperature in 'x' days is 9 °F.

Therefore, $1.5x=9$

$x=\frac{9}{1.5}$

$x=6$

Therefore, the temperature decreased by 9 °F in 6 days.

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Step-by-step explanation:

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3 years ago

1. Find the number of real number solutions for the equation.

exis [7]

Answer:

b. 2

Step-by-step explanation:

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3 years ago

Harry and Taylor are running a concession stand for a concert. Hot dogs at the concession stand cost $1.25 each and sodas cost $

Margarita [4]

Answer:

a-135 hot dogs and 245 sodas were sold.

Step-by-step explanation:

Our equations are:

1.25h + 0.75s = 352.50

h + s = 380

Let's use substitution to solve for this system. In the second equation, let's write h in terms of s:

h + s = 380

h = 380 - s

Now, let's plug in 380 - s for h in the first equation:

1.25h + 0.75s = 352.50

1.25(380 - s) + 0.75s = 352.50

We can now solve for s fairly easily:

1.25(380 - s) + 0.75s = 352.50

475 - 1.25s + 0.75s = 352.50

0.5s = 122.5

s = 245 sodas

We can already see which answer choice will match: A, and that is our answer.

5 0

3 years ago

Read 2 more answers