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3 years ago

Help?

Mathematics

1 answer:

Solnce55 [7]3 years ago

4 0

This is just good 'ol Pythagorean Theorem.

a^2 + b^2 = c^2

The diagonal will be c because c is always across from the right angle of a right triangle.

3.6^2 + 2.4^2 = c^2
12.96 + 5.76 = c^2
18.72 = c^2

Now take the square root of 18.72 to find c. You get 4.32666...

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Help plz will give brainlyst

Natali [406]

Step-by-step explanation:

this is easy for me

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3 years ago

Mario spent $23.85 at the bookstore on one book and some magizines. The book cost $12.60 and the magizines cost $2.25 each. How

alexandr1967 [171]

Answer:

Mario bought five books.

Step-by-step explanation:

If Mario bought n magazines, then n is the solution of

23.85 = 12.60 + n*2.25

23.85 - 12.60 = n*2.25

11.25 = n*2.25

n = 11.25/2.25

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4 years ago

Need help really please someone

ivanzaharov [21]

Answer:

2 5/7

Step-by-step explanation:

First we need to make the 4 2/7 top heavy so it is easier to subtract :)

4 2/7 = 3 9/7

Now we can subtract :)

3 9/7 - 1 4/7 = 2 5/7

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2 years ago

Read 2 more answers

((6+x))/(3)=(x)/(4)+4

mr Goodwill [35]

Answer:

x = 24

Step-by-step explanation:

$\frac{6+x}{3}$ = $\frac{x}{4}$ + 4 Multiply though by 12 to clear the fraction

4(6 + x) = 3x + 48 Distribute the 4)

24 + 4x = 3x + 48 Subtract 3x from both sides of the equation

24 + x = 48 Subtract 24 from both sides.

x = 24

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1 year ago

If the product of a number and -4 is subtracted from the number, the result is 3 more than the number. Find the number

lesya [120]

Answer: The number is 0.75 or 3/4

Step-by-step explanation:

let x = the number.

Now set up an equation: The product of a number (x) and -4 = -4x. So -4x is subtracted from the number - x. x-(-4x)

Then, that equals 3 more than the number (x) = x+3

So the equation is x-(-4x)=x+3.

Then, solve the equation!

x-(-4x)=x+3

x+4x=x+3 (Distribute the negative to the parentheses)

5x=x+3 (Combine like terms)

4x=3 (Get the Xs on one side by subtracting x from both sides)

x=0.75 or 3/4 (divide by the coefficiant, 4, on both sides)

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3 years ago

Read 2 more answers