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Lostsunrise [7]
3 years ago
6

The high temperature in a city one day was 22.8°C. The low temperature was -2.4°C. What was the temperature range (difference) i

n the city that day?
Mathematics
1 answer:
faust18 [17]3 years ago
4 0

Answer:

25.2°C

Step-by-step explanation:

Find the difference: 22.8-(-2.4)=22.8+2.4=25.2

Therefore, the temperature range in the city that day was 25.2°C

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Fred had $301 to spend on 8 books. After buying them, he had $13. How much did each book cost? <br>​
blondinia [14]
301-13=288
13 / 8 =
1.62
Fred spend $1.62 on each book
4 0
3 years ago
In order to release energy chemical bonds must be?
Reil [10]

Answer:

You have to put energy into a molecule to break its chemical bonds. The amount needed is called the bond energy. After all, molecules don't spontaneously break

Step-by-step explanation:

5 0
3 years ago
Does the set {t, t Int} form a fundamental set of solutions for t^2y" -- ty' +y = 0?
Ivanshal [37]

Answer:

yes

Step-by-step explanation:

We are given that a Cauchy Euler's equation

t^2y''-ty'+y=0 where t is not equal to zero

We are given that two solutions of given Cauchy Euler's equation are t,t ln t

We have to find  the solutions are independent or dependent.

To find  the solutions are independent or dependent we use wronskain

w(x)=\begin{vmatrix}y_1&y_2\\y'_1&y'_2\end{vmatrix}

If wrosnkian is not equal to zero then solutions are dependent and if wronskian is zero then the set of solution is independent.

Let y_1=t,y_2=t ln t

y'_1=1,y'_2=lnt+1

w(x)=\begin{vmatrix}t&t lnt\\1&lnt+1\end{vmatrix}

w(x)=t(lnt+1)-tlnt=tlnt+t-tlnt=t where t is not equal to zero.

Hence,the wronskian  is not equal to zero .Therefore, the set of solutions is independent.

Hence, the set {t , tln t} form a fundamental set of solutions for given equation.

6 0
4 years ago
Which is greater -2 or -2/3
Semmy [17]

Answer:

-2/3

Step-by-step explanation:

-2/3 is greater because it is closer to 0/positive than -2.

5 0
3 years ago
Please help I don’t understand this and I can’t figure it out.
ryzh [129]
So the groups of angles that make a line (like 130 and i or p a and t) should equal 180. however, the triangles should also equal 180. so in this case for the top row, we know that 130+j=180. since 180-130=50 (i did the inverse of addition, subtraction), j=50. now let’s say for that triangle that your top two angle measures were the 50 we just found and the 70 you have written just as an assumption but i have no clue what you were actually given. since triangles angles must equal 180, 50+70+that angle =180. 50+70=120, so if we do the inverse of 180-120=60, we find out that the bottom angle is 60 degrees.
7 0
3 years ago
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