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viva [34]
3 years ago
5

(5 1/4)÷(−2 1/2)? please help me

Mathematics
2 answers:
lisov135 [29]3 years ago
4 0
-21/10 or -2&1/10 I used my calculator
ZanzabumX [31]3 years ago
4 0

Answer:

-21/10

Step-by-step explanation:

5 1/4 = 21/4

-2 1/2 = -5/2

21/4 : (-5/2) = -21/10

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A film start at 7:15and finished at 9:30pm.How long is the film?
Mrac [35]

Answer:

2 hours and 15 minutes

Step-by-step explanation:

6 0
2 years ago
The graph of f (0) = -4 cos 0 is shown below. The range of this function is
Anika [276]

Answer:

-4 ≤ f (\theta) ≤ 4

Step-by-step explanation:

The range of a function is the allowed y-values of the function.

We can simply look at the periodic function below and see that the y-value ranges from a negative 4 to a positive 4. It oscillates betwen -4 and 4. That is the range.

We can say -4 ≤ f (\theta) ≤ 4

Last answer choice is right.

*** <u>NOTE:</u> it is a type, not "0", rather "\theta"

5 0
3 years ago
Determine the temperature of 2.6 moles of gas contained in a 5.00-L vessel at a pressure of 1.2atm.
strojnjashka [21]

Answer:

28.108 K.

Step-by-step explanation:

Given: Pressure (P)= 1.2atm

           Number of moles (n)=  2.6 moles

           Volume (V)= 5.00-L

Now finding the temperature (T).

Formula; T= \frac{P\times V}{n\times R}

R is a constant factor which makes other factors work together.

There is a numerical value for R which we use is 0.0821 \times \frac{L.atm}{mole.K}

∴ Temperature (T)= \frac{1.2\times 5}{2.6\times 0.0821 \frac{L.atm}{mol.K} }

⇒ Temperature (T)= \frac{6}{0.21346} = 28.1083\ K

∴ Temperature is 28.108 K

8 0
3 years ago
What is the positive solution to 4x2 + 2x= 42? NEED HELP
VikaD [51]

Answer:

Step-by-step explanation:

first multiply 4 X 2= 8

8+2x=42

Now you are going to pass 8 to the other side by adding -

2x=42-8

2x=34

Now you are going to divide 34 between 2 to eliminate the 2 multiplying in the other side. 34 between 2= 17

X=17

Hope this helps :)

7 0
3 years ago
Estimates the sum of 1/2-1/3
VladimirAG [237]
<span>decimal: 0.166666667

fraction: 1/6


this is if you were asking the difference which is subtraction, you asked for the sum and the difference
</span>
8 0
4 years ago
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