The ratio of blue marbles to redmarbles in a bag is 11:9. If there are 99 blue marbles, in the bag, how many red marblesare there?

Answers

Answer 1

Answer: $ratio=11:9$
$11:9=99:x$
$11x=891$
$(11x)/(11)=(891)/(11)$
$x=81$

There are eighty-one marbles.

Answer 2

Answer: $Radio:11:9\n 11--99\n \ 9--x\n x=(9)/(11)*99=81$

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A total of 60 students in Brooke's school are taking a spanish class this year. This is 25% more than the number of students who take a spanish class last year. Is the answer 45 or 48? Why?

Answers

Number of students taking Spanish class this year in Brooke's school = 60
Percentage increase in the number of students
taking Spanish class from last year = 25%
Then
Number of students that are taking Spanish
class more than last year = 25/100 * 60
= 15
Then
The number of students that took Spanish class last year = 60 - 15
= 45 students
So the number of students that took Spanish class last year was 45. I hope the answer is clear to you and the procedure is also easy for you to understand.

Can you make a quadrilateral with three ordered pairs?

Answers

No. If you have 3 given points, you can only make:

• A triangle by connecting the three points to the two neighbours

• A circle that contains the three points in its arc

Which phrase represents the expression 14x-19?

Answers

nineteen less than a number multiplied by 1414x means multiply 14 times a number-19 represents less than

.003 is 1/10 of what number?

Answers

Let

x--------> the number

we know that

$x*(1)/(10) =0.003$

Multiply by $10$ both sides

$x*(1)/(10)*10 =0.003*10\n x=0.03$

therefore

the answer is

$0.03$

.003 is 1/10 of .03 Just look at the zeros. And .03 is 1/10 of .3 and so on.

Solve using the substitution method Y+2x=7
14-4x=2y

A the solution is (1,5)
B the solution is (21,0)
C there an infinite number of solutions
D there is no solution

Answers

Since the value on both sides are the same, hence there are infinite number of solution for the system of equation

System of equations

Given the system of equations expressed as:

Y+2x=7

14-4x=2y

Using the substitution method.

From equation 1, y = 7 - 2x

Substitute into equation 2

14-4x = 2(7 - 2x)

Expand

14 - 4x = 14 - 4x

0x = 0

Since the value on both sides are the same, hence there are infinite number of solution for the system of equation

Learn more on system of equation here: brainly.com/question/14323743

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14-4x=2y divide 2 to both sides
VVVVV
7-2x=y you will need this on the next step
-----------------------------------------------------
y+2x=7
y=7-2x
(7-2x)+2x=7 -------> 7-2x+2x=7
7=7
The answer is C.

ANSWER PLZ QUICK AND FAST

Answers

Answer is B. 289

First find the area of the rectangle by multiplying Base x height. 17 x 13 = 221

Now to find the area of the huge triangle, you have to do (Base x height) / 2. So your height would be 8. Now your base would be the same as the length of the rectangle which is 17. (17 x 8) / 2 = 68

221 + 68 = 289

Answer is B. 289.....

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