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3 years ago

7x square- 20x-3 solving ax square+bx+c=0 by factoring

1 answer:

4 0

We first have to find the factors of 7 and -3 and see which ones add up to -20.

factors of 7 are 1 and 7 factors of -3 are -1 and 3
7 and 1 -3 and 1

therefore, we get (x - 3) (7x + 1)

we can use the FOIL method to verify the answer.

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A pyramid has a surface area of 24 m^2.

Yuliya22 [10]

Answer:

The replicas will have a surface area of 3 m2, 2.4 m2 and 2 m2.

Step-by-step explanation:

You would have to multiply:

24 x 1/8 = 3

24 x 1/10 = 2.4

24 x 1/12 = 2

7 0

2 years ago

The floor of the restaurant is a square of sides 28m. The floor is covered with square tiles of sides 40m. Calculate the total n

lisov135 [29]

Answer:

196000 tiles.

Step-by-step explanation:

The 28 m is 2800 cm. So a 28 x 28 meter square would be 2800 x 2800 centimeter square.

The tiles are 40 cm.

If you divide 40 from (2800 x 2800). (2800 x 2800) ÷40 = 196000

So 196000 tiles.

I'm not entirely sure if that's correct, but if it helps that's awesome.

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2 years ago

The class president is organizing a class trip to a nearby amusement park for 314 students. The regular price is $35 per ticket.

salantis [7]

Answer:

287 students were eligible for the discount :)

Step-by-step explanation:

7 0

2 years ago

At a surf shop in Malibu, California, a used blue surfboard is on sale for $100. According to the salesperson, the new price rep

Leokris [45]

Answer:

$125

Step-by-step explanation:

if there was a discount of 20%, the sales price is 100 - 20 = 80% of the original price

let a = original price

this equation can be used to represent the question

a x 0.8 = 100 ]]divide both sides by 0.8

a = 100 / 0.8 = 125

4 0

2 years ago

3. Is the relation {(1,2), (3, 10), (2,8), (5,<br> 10)} a function?<br> a) yes<br> b) no<br> a

Sedaia [141]

Answer:

the answer is yes

Step-by-step explanation:

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2 years ago