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nirvana33 [79]
4 years ago
12

Factor each expression 1. 3n + 9 2. t² + 4t 3. 15 + 20x

Mathematics
1 answer:
Gnom [1K]4 years ago
4 0
1... 3 (n + 3)
2... t (t + 4)
3... 5 (3 + 4x)

The trick to all of these is finding common factors, then taking them out... IT's pretty easy once you get the hang of it.
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An experiment consists of rolling a single die and selecting a card from a standard deck. Use this information to answer the fol
Alexus [3.1K]

Answer:

1/160

Step-by-step explanation:

Assuming that you want to roll a 5 and then select the ace of hearts that would make this a sequence of events. In order to find the probability of this happening, you would need to multiply the probability of each of these events happening separately with one another.

Since there are a total of 6 possible outcomes when rolling a die (1,2,3,4,5,6) which rolling a 5 is only one of the options. Meaning that the probability of rolling a 5 is 1/5.

In a deck of cards, there are a total of 32 cards in the deck and only 1 of those cards is an ace of hearts. Meaning that the probability of getting the ace of hearts is 1/32. Now we simply multiply these two probabilities together to get the probability of the sequence.

1/5 * 1/32 = 1/160

4 0
3 years ago
3. Justin went to the movies and
solmaris [256]

Answer:

7.35

Step-by-step explanation:

4.25+2.75=7.00 before tax

7.00 x .05=.35 sales tax

7.00+ .35=7.35 total bill

3 0
3 years ago
A laser beam is transmitted with a "width" of .0008 degrees and
pickupchik [31]

Answer:

Object will be at a distance of 358098.6 km from the source

Step-by-step explanation:

We have given angle = 0.0008 degree =\frac{0.0008\times \pi }{180}=4.444\times 10^{-6}\pi

Radius is given = 2.50 km

Linear size of the object will be equal to diameter

So linear size = 2.5×2 = 5 km

We know that linear size =distance \times \Theta

So 5=d\times 4.444\times 10^{-6}\pi

d = 358098.6 km

5 0
3 years ago
There are 350 to 450 students in Leah’s school. There are 1200 to 1300 students in her brother Zacks school. Choose a number of
Cerrena [4.2K]
400 for Leah's school and 1250 for Zacks school
7 0
4 years ago
Need help combining like terms with equations<br><br>-2(×+11) = -18
JulsSmile [24]

-2(x+11)=-18

-2x-22=-18

-2x/-2   4/-2

x=2

pretty sure

3 0
4 years ago
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