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2 years ago

Factorise 2p^2 - p - 10 (2p squared)

Mathematics

1 answer:

velikii [3]2 years ago

3 0

2p² - p - 10 = 0

2 = a

- 1 = b

- 10 = c

To factor, find two numbers that multiply to equal a·c and also that have a sum of b

2p² + 4p - 5p - 10 = 0

2p (p + 2) - 5 (p + 2) = 0

<h3>Answer: ( 2p - 5 ) ( p + 2 ) = 0</h3>

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help The screen in a theatre is 22 ft high and is positioned 10 ft above the floor, which is flat. The first row of seats is 7 f

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<span>(a.)
Let's say α is the angle that subtends from the top of the screen to horizontal eye-level.
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3 years ago

Susan's pizzeria made 7 pepperoni and 20 pizzas without pepperoni. What is the ratio of numbers of pizzas with pepperoni to the

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Answer:

7/27 pizza's were pepperoni and 20/27 pizzas did not have pepperoni

Step-by-step explanation:

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2 years ago

Sing acts are 5 min long and comedy acts are 3 min long. The show has 12 acts and last 50 min. How many singing acts and how man

ryzh [129]

Answer

so there are 7 singing acts and 5 comedy acts.

Step-by-step explanation:

Let x= number of singing acts.

Let y= number of comedy acts.

We will take x+y=12 as our first equation, as there are 12 shows in total. We will take 5x+3y=50 as our second equation as there are 50 total minutes, and singing acts are 5 mins and comedy acts are 3 mins.

We solve x+y=12

Y=-x+12

We know y=-x+12, so we will substitute that for the y in the second equation.

1. Substitute 5x+3(-x+12)=50

2. Distribute 5x-3x+36=50

3. Solve 2x+36=50

2x=14

X=7

Now that we have found x, we will find y by substitute the x in 5x+3y=50 with the value, 7, that we found for x.

5(7)+3y=50

35+3y=50

3y=15

Y=5

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2 years ago

The following table gives the science scores and times spent studying for 10 students:

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There appears to be a positive correlation between the number of hour spent studydng and the score on the test.

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