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g100num [7]
3 years ago
10

A bag contains blue marbles and red marbles, 66 in total. The number of blue marbles is 9 less than 4 times the number of red ma

rbles. How many blue marbles are there?

Mathematics
2 answers:
Westkost [7]3 years ago
3 0
51 blue marbles is the answer
Sladkaya [172]3 years ago
3 0
X is the blue marbles and y is the red marbles.

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the sum of three numbers is 15. the second number is double the first. the third number is 5 less than the first. what are the t
tigry1 [53]

Hello from MrBillDoesMath!

Answer:

5, 10, 0

Discussion:

Let "f" be the first number. Then the questions tells us that

f + 2f  + (f-5) = 15           =>

f + 2f + f - 5 = 15            => add 5 to both sides

4f = 5+ 15 = 20              => divide both sides by 4

f = 20/4 = 5

The numbers as

f:        5

2f:     10

(f-5):  0

Thank you,

MrB

5 0
2 years ago
Write the algebraic expression for the difference between the squares of two numbers.
V125BC [204]

The algebraic expression for the difference between the squares of the two numbers, supposing the two numbers to be a and b, is

a² - b² = (a + b)(a - b).

An algebraic expression is a combination of terms, where the terms are separated using mathematical operators like plus (+), minus (-), multiply (*), and divide (/).

The terms are combinations of numerals and variables.

Variables are represented alphanumerically, which can hold any value as per the expression they are used in.

In the question, we are asked to write the algebraic expression for the difference between the squares of two numbers.

We assume the two numbers to be a and b respectively.

Thus, we are asked to write an expression for the difference between the square of a and square of b, that is, we are asked to write an expression for a² - b².

We know that a² - b² is an identity, which can be shown as (a + b)(a - b).

Thus, the algebraic expression for the difference between the squares of the two numbers, supposing the two numbers to be a and b, is a² - b² = (a + b)(a - b).

Learn more about algebraic expressions at

brainly.com/question/2241589

#SPJ4

6 0
1 year ago
What is the slope between the points (3, 5) and (-2, -4)
Tamiku [17]
The slope is 9/5! hope this helps!!
6 0
3 years ago
The value in dollars v(x), of a certain truck after x years is represented by the equation v(x)= 32,500(0.92) raised to the x po
s2008m [1.1K]
The 32,500 is the original cost of the truck and the (0.92) You take v(x)=32,500(0.92)
 and raise that to the 2nd power, to represent the 2nd year and you will get an answer of $27,300. 
Each year the truck is losing $2,600 in value, after two years the truck has lost $5,200 in value equalling
= $27,300

8 0
2 years ago
A realtor listed a house that was 45 yards by 10 yards..What is the total square footage of the house
Alex17521 [72]
4050 ft is the total square footage of the house.
6 0
3 years ago
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