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Liula [17]
3 years ago
12

The table represent temperatures for 9 days in February. What is the average temperature?

Mathematics
1 answer:
Artist 52 [7]3 years ago
6 0

Answer:sum =378 according to your new questions.

to find average temperature

use formula

average =sum of temperature /no of measuring day

=378/9=42 is your answer

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Graph A line goes through the point (6,–2) and has a slope of –3. What is the value of a if the point (a,7) lies on the line?
3241004551 [841]

Answer:

The value of a is 3

Step-by-step explanation:

First you have to make an equation based on the point and slope that you were given. The formula for this is y-(y cordinate of point)=slope(x-x cordinate of slope)

y--2=-3(x-6), which simplifies to y+2=-3(x-6)

In (a,7), 7 is the y coordinate. We have to plug 7 in for the y in our equation.

7+2=-3(x-6),

Combine like terms on the left side to get to 9=-3(x-6)

Multiply out on the left to get 9=-3x+18

Subtract 18 from the left side to get -9=-3x

Divide both sides by negative 3 to get 3=x (remember x is a)

7 0
2 years ago
Solve the Inquality -2(w+4)+9​
Temka [501]

Answer:

-2w+1

Step-by-step explanation:

-2(w+4)+9

-2w-8+9

-2w+1

6 0
3 years ago
if Donnie has 100 marbles and gives 25 away to Arthur and 35 to mike how many marbles does Donne have?
Marat540 [252]

Answer:


Step-by-step explanation:

100 MINUS 25 PLUS 35


5 0
3 years ago
Read 2 more answers
Find the area of wyz A. 18 cm B 36 cm C.72 cm D 144
Oliga [24]

Answer:

36 cm^2

Step-by-step explanation:

area of triangle = length * height * 1/2

6 * 12 * 1/2 = 72 * 1/2 = 36

6 0
3 years ago
It is estimated that world reserves of oil currently stand at 2625
seraphim [82]

Answer:

  35.4 years

Step-by-step explanation:

The annual consumption (in billions of units) is described by the exponential function ...

  f(t) = 45.5·1.026^t

The accumulated consumption is described by the integral ...

  \displaystyle\int_0^t{f(x)}\,dx=45.5\int_0^t{1.026^x}\,dx=45.5\left(\dfrac{1.026^t-1}{\ln{1.026}}\right)

We want to find t such that the value of this integral is 2625, the estimated oil reserves.

  2625 = 45.5/ln(1.026)·(1.026^t -1)

  2625·ln(1.026)/45.5 +1 = 1.026^t ≈ 1.480832 +1 = 1.026^t

Taking natural logs, we have ...

  ln(2.480832) = t·ln(1.026)

  t ≈ ln(2.480832)/ln(1.026) ≈ 35.398

After about 35.4 years, the oil reserves will run out.

4 0
2 years ago
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