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2 years ago

Read the word problem below.

Mathematics

2 answers:

Alenkinab [10]2 years ago

7 0

Answer:

There are 28 blue marbles.

Step-by-step explanation:

Antonio has 15 green marbles and 12 red marbles. The rest of the marbles are blue.

Let the number of blue marbles be x

Total marbles green plus red = $15+12=27$

Now, Antonio has a total of 55 marbles.

Equation forms:

$55=x+27$

We will subtract 27 from 55 to get x.

= $55-27=x$

Hence x = 28

Therefore, there are 28 blue marbles.

MAVERICK [17]2 years ago

5 0

He has 28 blue marbles 15+12-55=28

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Which equation is equivalent to 3 (5x – 4) = 2 (7x)? A. 5x - 4 = 142

KonstantinChe [14]

Step-by-step explanation:

3(5x - 4) = 2(7x)

=> 15x - 12 = 14x

=> x = 12

By the options given, I would say none of the options are correct!

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2 years ago

What is my hourly pay if my bi-weekly gross is 1,986 dollars

Bingel [31]

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3 years ago

Can You be more specific

frozen [14]

Answer:

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2 years ago

Read 2 more answers

A.) which of these expressions is equivalent to 4 x x

Law Incorporation [45]

Answer:

a) The correct option is C: 4x

b) The correct option is B: 2x

Step-by-step explanation:

a) Usually when we have a real number multiplying a variable, we do not need to write the multiplication symbol.

So instead of writing:

4×x

We can write:

And this will be equivalent.

Then in this case the correct option is C.

b) We know that if we have the multiplication of A by n, this will be equivalent to add A n times.

Then if we have the sum of A, for example, 4 times, we have:

A + A + A + A

And this can be written as 4*A

In this case, we have the expression x + x.

So we are adding x two times, then this can be written as: 2*x, or, as we said earlier, this also can be written as 2x.

Then the correct option is option B.

8 0

2 years ago

BC = 36; D = 15. What is the value of BD - AC. B A BD - AC =

Snezhnost [94]

Answer:

BD - AC = 0

Step-by-step explanation:

Given that:

BC = 36 , CD = 15 and BD = x

As these are forming right angled triangle,

Using Pythagorean theorem,

$(BD)^2+(CD)^2=x^2\\(36)^2+(15)^2 = x^2\\1296 + 225 = x^2\\1521 = x^2\\$

Taking square root on both sides

$\sqrt{x^2}=\sqrt{1521}\\x=39$

As the given shape is rectangular, the sides parallel to each other will have same values.

AB = 15 , AD = 36 and AC = x

$(15)^2+(36)^2 = x^2 \\225 + 1296 = x^2 \\1521 = x^2 \\x = 39$

Now,

BD - AC = 39 - 39 = 0

Hence,

BD - AC = 0

5 0

3 years ago