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slava [35]
3 years ago
5

I have to solve 3x^2+5x=2 but Im having some confusion.

Mathematics
1 answer:
stellarik [79]3 years ago
5 0
It´s <span> x = 2 
I´m positive that is right </span>
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Which of the following expressions is equal to -4x^2-36
liubo4ka [24]

Answer:

Step-by-step explanation:

-4x^2-36 can be rewritten as -4(x^2 + 9).  The quantity in parentheses does not have real roots, but does have the imaginary roots ±3i.

Next time, please share the possible answer choices.

6 0
3 years ago
A certain shade of pink is created by adding 3 cups of red paint to 7 cups of white paint.
vazorg [7]

Answer:

7/3 is constant of proportionality and, 3/7 of a cup of red paint should be added to 1 cup of white paint.

Step-by-step explanation:

Constant of proportionality is the constant value of the ratio of two proportional quantities x and y; usually written y = kx, where k is the factor of proportionality.

To make color pink,

for every 3 cups of red , we need 7 cups of white.

Let 'r' be the cups of red required

let 'w' be the cups of white required

so , as per the question

for 3 r we need = 7 w

r = 7/3 w

so, 7/3 is constant of proportionality and, 3/7 of a cup of red paint should be added to 1 cup of white paint.

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4 0
3 years ago
Unitary method A car can cover a distance of 522km on 36litres of disesel. How far can it travel with 14litres, ​
maria [59]

Answer:

It can cover 203 km with 14 litres.

Step-by-step explanation:

Given that,

A car can cover a distance of 522km on 36litres of diesel.

522 km = 36 litres

1 l = (522/36) km

We need to find how far can it travel with 14 litres.

We can use the unitary method to solve it.

14\ L=\dfrac{522}{36}\times 14\\\\=203\ km

So, it can cover 203 km with 14 litres.

7 0
3 years ago
there are 4 red, 6 yellow and 6 blue socks in the drawer. if the sock is not replaced after it is drawn,what is the probability
ollegr [7]
Total amount: 16

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Probability of picking a red sock 4/16

If we take a red sock out and do not replace it, we are left with a total of 15 socks.

Blue socks: 6

So the probability of picking a blue sock will be 6/15

Multiply:

4/16 * 6/15 = 24/240 = 1/10
3 0
3 years ago
Find the perimeter of a square of sides 10.5cm​
astraxan [27]

Answer:

42 cm

Step-by-step explanation:

A square has 4 equal sides. To find the perimeter, add all side lengths together.

1. Set up the equation and solve

10.5 + 10.5 + 10.5 + 10.5 = 42

6 0
3 years ago
Read 2 more answers
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