All categories

3 years ago

(57 – 42) X-3 – 21 Help me out please

Mathematics

1 answer:

SpyIntel [72]3 years ago

7 0

Answer:

1065

Step-by-step explanation:

57-42×-3-21

You might be interested in

Oliver works 5 days a week. He drives 53 kilometres each day and walks a total of 25 kilometres over the week: He uses the follo

nikklg [1K]

I think it’s 36 but I’m not good at math so don’t count me on it

7 0

1 year ago

A marine aquarium has a small tank and a large tank, each containing only red and blue fish. In each tank, the ratio of red fish

Anna007 [38]

Answer:

Ratio of blue fish in the small tank to the red fish in large tank is 10 : 6279

Step-by-step explanation:

Let the number of red fish and blue fish in the large tank are x and y respectively.

Similarly ratio of red fish and blue fish in the small tank are x' and y' respectively.

Since in each tank ratio of the red fish to blue fish is 333 : 444

That means x : y = 333 : 444

Or $\frac{x}{y}=\frac{333}{444}$

⇒ $\frac{x}{y}=\frac{3}{4}$

⇒ y = $\frac{4x}{3}$ --------(1)

Similarly x' : y' = 333 : 444

⇒ $\frac{x'}{y'}=\frac{333}{444}$

⇒ $\frac{x'}{y'}=\frac{3}{4}$

⇒ x' = $\frac{3y'}{4}$ ------(2)

Ratio of the fish in large tank to the fish in small tank is 464646 : 555

So (x + y) : (x' + y') = 464646 : 555

$\frac{x+y}{x'+y'}=\frac{464646}{555}$

Now we replace the values of x and y' from equation (1) and equation (2)

$\frac{(x+\frac{4x}{3})}{(\frac{3y'}{4}+y')}=\frac{464646}{555}$

$\frac{\frac{7x}{3}}{\frac{7y'}{4}}=\frac{464646}{555}$

$\frac{4}{3}\times \frac{x}{y'}=\frac{464646}{555}$

$\frac{x}{y'}=\frac{3}{4}\times \frac{464646}{555}$

$\frac{x}{y'}=\frac{232323}{370}$

$\frac{y'}{x}=\frac{370}{232323}$

$\frac{y'}{x}=\frac{10}{6279}$

Therefore, ratio of blue fish in the small tank to the red fish in large tank is 10 : 6279

4 0

3 years ago

Helpppp plssssss anyoneeeeee

Hatshy [7]

Answer:

D. y=3x+4

This is the correct answer

5 0

2 years ago

10. The measure of an exterior angle of a triangle is A. equal to the sum of non-adjacent interior angles. B. less than the sum

sdas [7]

Answer: d is the answer it

8 0

2 years ago

Helppppppppppppppppppppppppppp meeeeeeeeeeeeeeeeeeeeeeeeeeeeee

AnnyKZ [126]

Answer:

Answer down below!

Step-by-step explanation:

The simple way to do this is shown below:

Since two tires cost $74, you know that if you multiply that by two, you'll get your four.

74 x 2 = 148

<em>Four tires will cost you $148</em>

6 0

2 years ago