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Anettt [7]
3 years ago
6

Simplify this equation: (−2) ∙ (2a+7)

Mathematics
2 answers:
lora16 [44]3 years ago
8 0

Answer:

-4a - 14

Step-by-step explanation:

( - 2).(2a + 7) \\  =   ( - 2).2a + ( - 2).7 \\  =  - 4a - 14

Gnoma [55]3 years ago
4 0

Answer:

-4a -14

Step-by-step explanation:

(−2) ∙ (2a+7)

Distribute

-2 * 2a + -2*7

-4a -14

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Lisa is sitting on the dock beside the lake she drops a rock from her hand into the lake after the rock hits the surface of the
soldi70 [24.7K]

Answer: 4.2495 feets

Step-by-step explanation:

Given the following :

Rate of change (speed) when rock hits the lake surface = - 3in/s

Distance or depth after 5 seconds :

Distance = rate of change * time

Distance = (- 3 in/s × 5) = - 15 inches

1 inch = 0.0833 feet

15 inches = (-15 * 0.0833) = - 1.2495 feets

Distance between Lisa's hand and lake surface = 3 feets :

Distance between Lisa's hand and rock after 5 seconds :

(3 feets + 1.2495 feets) = 4.2495 feets

5 0
3 years ago
Find the length s of the arc of a circle of radius 20 miles subtended by the central angle 33º
AysviL [449]
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3 years ago
Evaluate-32 + (2 – 6)(10)<br> The answer is -49
Drupady [299]
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8 0
4 years ago
The population of Laredo, Texas, was about 215,500 in 2007. It was about 123,000 in 1990. If we assume that the population growt
Mazyrski [523]

Answer:

hello, This can be solved using your standard rise over run slope calculation.  Think of the number of years after 1990 as your input variable.  2007 would be 17 years after 1990, so the "y" variable would be 17.  This is your "run", and it goes in the denominator of your slope calculation.  Then the difference between the 2007 population and the 1990 population would be the "p" variable difference, the "rise", which is 92500.  Dividing, you will get 5441.17.  Since we're talking about humans, we can't have a decimal, so let's round up to 5442.

 

Using the slope-intercept form of a linear equation (y = ax + b), we will say that p = 5442y + 123000.  Do you know why we add the 123000?  It's because that's the starting value, which is equivalent to the "intercept" in the slope-intercept form.

 

Hope this helps.

Step-by-step explanation:

6 0
3 years ago
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Anit [1.1K]

Answer:

I'm pretty sure it's 18 degrees

Step-by-step explanation:

3 0
3 years ago
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