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Anni [7]
3 years ago
9

1. Which is equivalent to (3x - 8)(4x + 2)?

Mathematics
2 answers:
ella [17]3 years ago
8 0

Answer:

12x² - 26x - 16

Step-by-step explanation:

(3x - 8) (4x + 2)

= 3x (4x + 2) - 8 (4x + 2)

= 12x² + 6x - 32x - 16

= 12x² - 26x - 16

Reil [10]3 years ago
4 0

Answer:

12x2 + 6x - 16

Step-by-step explanation:

You foil. "FOIL" stands for "FIRST - OUTER - INNER - LAST" numbers of the two parenthesis.

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Jamie and Carrie are trying to determine what size ladder they are going to need to paint the house the. The house is 25ft tall
Oksanka [162]

Answer:

Step-by-step explanation:

By the Pythagorean Theorem we know that the hypotenuse squared is equal to the sum of its squared sides.

h^2=x^2+y^2

Here y=25 and x=8 so

h^2=25^2+8^2

h^2=625+64

h^2=689

h=26.25 ft

They obviously rounded to nearest whole foot.

So Carrie is correct in saying the ladder should be 26 feet.

3 0
3 years ago
A train is moving at an average speed of 180 m/s. how long will it take to reach the station. Both stations are 80 km apart?
Alexxandr [17]

1 km = 1000 meters.

Find total meters: 80 km x 1000 meters per km = 80,000 meters.

Divide total meters by the given speed:

80,000 meters / 180 m/s = 444.44 seconds.

1 minute = 60 seconds

444.44. Seconds / 60 seconds per minute = 7.41 minutes = 7 minutes 24.42 seconds

Total time = 7 minutes 24.42 seconds

Round as needed.

4 0
3 years ago
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
7. Find the measure of <1. Justify your answer
ANTONII [103]

Answer:

3rd option

Step-by-step explanation:

∠ 1 and 75° are corresponding angles and are congruent , so

∠ 1 = 75°

8 0
3 years ago
Everything it makes no sense to me
Alinara [238K]
Convert 7.7% to a decimal then multiply by 280 to get your answer
6 0
3 years ago
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