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Kitty [74]
2 years ago
7

On a cold day, the temperature in a certain city changed −18.5°F over 7.4 hours.

Mathematics
1 answer:
lys-0071 [83]2 years ago
5 0

Answer:

-2.5 degrees

Step-by-step explanation:

The temperature decreased 18.5 degrees F in 7.4 hours.

-

-18.5/7.4 = -2.5 degrees F

The average change in temperature over the course of 7.4 hours is -2.5 degrees F.

Your welcome!

Kayden Kohl

8th Grade

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</span>\bf \begin{array}{ccccccccc}&#10;&&x_1&&y_1&&x_2&&y_2\\&#10;%  (a,b)&#10;&&(~ 0 &,& -3~) &#10;%  (c,d)&#10;&&(~ 2 &,& 3~)&#10;\end{array}&#10;\\\\\\&#10;% slope  = m&#10;slope =  m\implies &#10;\cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{3-(-3)}{2-0}\implies \cfrac{3+3}{2-0}\implies 3
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so, we're really looking for a line whose slope is 3, and runs through -1, -1

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8 0
3 years ago
Read 2 more answers
A line parallel to the line 3x+4y+8=0 with y-intercept 4
Vitek1552 [10]
3x + 4y + 8 = 0
4y = -3x - 8
y = -3/4x - 2....slope here is -3/4. A parallel line will have the same slope.

y = mx + b
slope(m) = -3/4
y int (b) = 4

so ur equation is : y = -3/4x + 4
6 0
3 years ago
Read 2 more answers
3w + 7=8 need help with this
LiRa [457]
Hope this helps you out 3w+7=8

The answer is w= 1/3

Step by step:

3w+7=8
Step 1: is subtract is 7 from both sides.
3w+7-7=8-7
3w=1

Step 2: Divide both sides by 3.
3w/3 = 1/3

Your solution is:

w=1/3
6 0
3 years ago
Place decimal points in 34, 4, and 417 so that the sum of the three numbers is 7.97.
KIM [24]
3.4+0.4+4.17=7.97 you just have to try different combinations of different numbers with the decimals.
                                                             





8 0
3 years ago
Write an equation in standard form of a line that passes through (4, 2) and is parallel to y = - 3/4 * x - 5 .
Bingel [31]

Answer:

y=2x+y-int

Step-by-step explanation:

If the line is parallet to the defined by the given equation the slope of the unknown line is m=2.

Use this value of slope to calculate the y intercept. 2  = ( 2 - y-int)/4 - 0)

THus, your equation is y = 2x + y-int

5 0
2 years ago
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