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8090 [49]
3 years ago
10

Alex drove 135 miles in 3 hours at a constant speed

Mathematics
1 answer:
Dominik [7]3 years ago
7 0
Speed = distance / time
speed = 135/3 = 45 miles per hr <==
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What is the completely factored form of x4 + 8x2 – 9? (x + 1)(x – 1)(x + 3)(x + 3) (x+1)(x+1)(x+3){x^2+9} (x2 – 1)(x + 3)(x – 3)
Y_Kistochka [10]

Answer:

(x+1)(x-1)(x^2+9)

Step-by-step explanation:


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3 years ago
What is the union sets M= (1,7,10,11,15) and N=(5,15)?
katen-ka-za [31]

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To get the union of two sets of numbers, all you do is combine the numbers from least to greatest. If a number repeats in the 2 sets, you only put it once.

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3 years ago
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3 years ago
Water is being pumped into a 12-foot-tall cylindrical tank at a constant rate.
Stels [109]

Answer:

4 feet

Step-by-step explanation:

It is given that:

• At 2:30 p.m., the water depth was 2.6 feet.  

• It is now 5:00 p.m., and the depth of the water is 3.6 feet.

So in 2.5 hours ( 5pm - 2:30pm) the water rose 1 feet (3.6 - 2.6).

Now <em><u>we can find how much water rises in 1 hour by setting up a ratio (let x be the depth increase of water in 1 hr):</u></em>

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So, in 1 hour, the water level will rise 0.4 feet

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8 0
3 years ago
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Vinil7 [7]

Answer:Answer:

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Step-by-step explanation:

Given phrase,

w is increased by 4,

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For drawing a model that shows w + 4

Take two boxes in which first shows w and second shows 4 and add them,

Similarly, for showing 4 + w, take first box that shows 4 and second box that shows w then add them.

Step-by-step explanation:

7 0
3 years ago
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