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juin [17]
2 years ago
14

During a cold winter day, the temperature change was - 2.3 f per hour for a period of 6.5 hours. What was the change in temperat

ure during that time?
Mathematics
1 answer:
meriva2 years ago
4 0

Answer:

  • -14.95 F

Step-by-step explanation:

<u>Given:</u>

  • Temperature change rate is - 2.3 F per hour
  • Time is 6.5 hours

<u>The change in temperature is:</u>

  • temperature change rate * time
  • -2.3 * 6.5 = -14.95 F

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construct a right-angled triangle ABC where angle A =90 degree , BC= 4.5cm and AC= 7cm. please ans fast........ Very urgent. Pls
Katena32 [7]

Answer and Step-by-step explanation: The described right triangle is in the attachment.

As it is shown, AC is the hypotenuse and BC and AB are the sides, so use Pytagorean Theorem to find the unknown measure:

AC² = AB² + BC²

AB^{2} = AC^{2}-BC^{2}

AB =\sqrt{AC^{2}-BC^{2}}

AB =\sqrt{7^{2}-4.5^{2}}

AB =\sqrt{28.75}

AB = 5.4

Then, right triangle ABC measures:

AB = 5.4cm

BC = 4.5cm

AC = 7cm

6 0
3 years ago
Janelle buys 4 cases of water , each case of water contains 12 bottles, janelle drinks 3 bottles of water, what expression repre
vitfil [10]
12 times 4 minus 3 because the 12 represents how much is in each of the 4 cases and you minus that by 3 and you get your answer
8 0
3 years ago
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I need help I don’t understand and I need to show my work who would help me??
stich3 [128]

Answer: b

Step-by-step explanation:

In the last question, you wrote on a second equation "13x ...." kkk

Let's go:

We have to check each one answer in the following system:

x - 2y = 7

3x + 7y = 8

I can use the substituition method to solve this system...

x = 7 + 2y

3x + 7y = 8

3(7 + 2y) + 7y = 8

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13y = 8 - 21

13y = -13

y = -1

x = 7 + 2.(-1)

x = 5

Finally, the correct answer is the second one (letter b).

5 0
3 years ago
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Simiplify without using absolute value bars, Solve for |x +7| for x&gt;=7
Pavlova-9 [17]

9514 1404 393

Answer:

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Step-by-step explanation:

The argument of the absolute value function is positive for any x > -7. The required domain is a subset of that, so the absolute value function does not change its argument.

  |x+7| for x ≥ 7 is x +7

5 0
3 years ago
At Jones College, there are a total of 100 students.
Art [367]
The answer is 0. BTW THAT IS EASY
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3 years ago
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