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ELEN [110]
3 years ago
11

At 7pm last night ,the temperature was 10 degrees Fahrenheit. At 7am the next morning the temperature was negative 2. By how muc

h did the temperature change from 7pm to 7am?
Mathematics
2 answers:
djverab [1.8K]3 years ago
8 0
The answer is 12 because you subtract the 10 to zero then subtract 2 more to get -2
stepladder [879]3 years ago
6 0
The tempature decreased by 12, because 10-12= -2
You might be interested in
The lengths of the legs of a right triangle are consecutive even integers. The hypotenuse is 58 inches. What is the sum of the l
miskamm [114]

Answer:

82 inches

Step-by-step explanation:

The difference between consecutive even integers is 2, thus

let the legs be n and n + 2

Using Pythagoras' identity in the right triangle

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

n² + (n + 2)² = 58² ← expand and simplify left side

n² + n² + 4n + 4 = 3364 ( subtract 3364 from both sides )

2n² + 4n - 3360 = 0 ( divide all terms by 2 )

n² + 2n - 1680 = 0 ← in standard form

(n + 42)(n - 40) = 0 ← in factored form

Equate each factor to zero and solve for n

n + 42 = 0 ⇒ n = - 42

n - 40 = 0 ⇒ n = 40

But n > 0 ⇒ n = 40

and n + 2 = 40 + 2 = 42

Thus sum of legs = 40 + 42 = 82 inches

3 0
3 years ago
Just answer 3 and 4 you don’t need to show your work just answers please!
ad-work [718]
#3.) 48 pieces of ribbon
#3.) this week they cost $112
8 0
3 years ago
I need help someone please
statuscvo [17]

Answer: \frac{6}{2}

Step-by-step explanation:

1. Use this \frac{f(b)-f(a)}{b-a} to find the average rate of change

2. Average rate of change = \frac{f(8)-f(6)}{8-6}

3. f(8) = - 4 and f(6) = -10 (To find these you will need to look at the points on the graph. So the points (8,-4) and (6,-10))

4. Replace -4 to f(8) and -10 to f(6)

5. So it will look like\frac{-4-(-10)}{8-6}

6. Solve \frac{6}{2}

6 0
2 years ago
Someone please answer this for me ASAP
Agata [3.3K]

Answer:

m=-1/2

Step-by-step explanation:

6 0
3 years ago
Which number is an irrational number?
Svetlanka [38]

Answer:

0.1257486

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
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