3 years ago

A bag contains purple marbles and green marbles, 71 in total. The number of purple

Mathematics

1 answer:

Vinvika [58]3 years ago

8 0

Answer:

$55 \: purple \: marbles$

Step-by-step explanation:

$Let \: x, y \: be \: the \: number \: of \: purple \: and \: green \: marbles \: respectively \\ We \: have \: a \: system \: of \: equation: \\ \begin{cases}x + y = 71 \\ x + 9 = 4y \end{cases}\Leftrightarrow \begin{cases}x = 55\\ y = 16 \end{cases}$

You might be interested in

Pet stores selling dogs for 140 and cats for $70 yesterday the store sold 28 pets and I made 3360 how many cats were sold yester

Lerok [7]

Answer:

Step-by-step explanation:

8 × $70 = $560

20 × $140= $2800

$560 + $2800 = $3360

5 0

3 years ago

Read 2 more answers

Write an equation to represent the following statement. The sum of j and 47 is 55. Solve for j.

True [87]

Answer:

Step-by-step explanation:

j+47=55

find j

j=55-47

j=8

3 0

3 years ago

Read 2 more answers

On a school bus there are 9 boys. There are twice as many girls as boys on the bus. How many girls and boys combined are on the

dezoksy [38]

9*2=18
18+9=27
There are 9 boys and twice as many girls so that means there is 18 girls and you have to find the total of boys and girls so you add 18 plus 9 to get a total of 27 students on the bus

4 0

3 years ago

Please help!!!! trigonometric ratios !!!

OLga [1]

Answer:

X=47.68degree

Step-by-step explanation:

tanx=56/51

x=tan^(-1)(56/51)

=47.68

6 0

3 years ago