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Sonja [21]
2 years ago
6

Evaluate this expression. -86.4 + 16.38

Mathematics
2 answers:
iris [78.8K]2 years ago
5 0

Answer:

-70.20

Step-by-step explanation:

vlada-n [284]2 years ago
3 0

Answer:

The answer is -70.22

Step-by-step explanation:

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According to records from 50 years, there is a 2/3 chance of June temperatures being above 80 F. Azul needs to find the probabil
Brrunno [24]

Record of june temperature of last 50 years

Probability of June temperature being above 80° F from last 50 years

                      =\frac{2}{3}

It means , out of 30 days ,there are  only 20 days , in which temperature is above 80°F.

⇒Probability that it will be above 80° F for 20 or more days this June

                =\frac{20+x}{30}  

where, x is the number of extra days after 20 days in month of june, when temperature is above 80°F.

Value of this Probability will be in between

                \frac{2}{3}\leq P \leq 1  

Now, what Azul wants

 To find the probability that it will be above 80° F for 20 or more days this June.

The Simulation given is

  ⇒There are 30 days in June. If we use a number cube with the numbers 1-6 and assign 1-4 as a temperature above 80° F and 5-6 as a temperature 80° F or below.

Total number of numbers on number cube ={1,2,3,4,5,6}

Favorable Outcome={1,2,3,4}=Temperature above 80° F

Temperature 80° F or below ={5,6}

⇒Probability of getting number {1,2,3,4} on the number cube when rolled once,that is Temperature above 80° F

        =\frac{4}{6}\\\\=\frac{2}{3}

⇒Probability of getting number {5,6} on the number cube when rolled once, that is Temperature 80° F or below

        =\frac{2}{6}\\\\=\frac{1}{3}

This is Incorrect Simulation, as there are chances that , there can be more than 20 days out of 30 days when Temperature goes above 80° F.But Here we have got Probability of temperature being above 80° F for 20 days only, not more than 20 days, which is =\frac{2}{3}

Not,a number

    \frac{2}{3}< \text{Probability} \leq 1.    

4 0
3 years ago
-19/2 divided by 38/5
slavikrds [6]

Answer:

-1.25

Step-by-step explanation:

The result can be shown in multiple forms. Exact Form: 385 38 5. Decimal Form: 7.6 7.6. Mixed Number Form: 735 7 3 5. 385 3 8 5 .

8 0
3 years ago
What is the solution for 13.2 = t 4.4? I'm super like spazzed out right now and can't think.
Olegator [25]

Answer:

4.4 t = 13.2

t = 13.2 / 4.4 = 3

t = 3

Step-by-step explanation:

5 0
3 years ago
PLEASE HEELLLLP WILL MARK BRAINLIEST
Mrrafil [7]

Answer:

312km

Step-by-step explanation:

1. Multiply. 4800 x 7% = 3744

2. Divide. 3744 / 12 = 312km sq.

So the area after 12 years is 312 km sq.

6 0
2 years ago
Read 2 more answers
Which statement is valid when a circumscribed circle of an acute triangle is
Anni [7]
<h3>There are two answers: Choice C, Choice D</h3>

Explanation:

For any acute triangle, the center of the circle is always inside the triangle.

For any right triangle, the center of the circle is the midpoint of the hypotenuse. The hypotenuse is the diameter of the circle.

For any obtuse triangle, the center of the circle is outside the triangle.

----------

Let's look at the answer choices more closely

A. False. This is only true if we have a right triangle as mentioned earlier.

B. False. This describes an inscribed circle.

C. True. As stated earlier.

D. True. This is based on how the circumscribed triangle is defined. It is set up to be the circle that goes through all three vertex points of a triangle. In other words, it is the smallest circle to completely enclose the given triangle.

4 0
2 years ago
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