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WITCHER [35]
3 years ago
11

How do you know (2, 1) is a solution to 4x+y=9?

Mathematics
1 answer:
vichka [17]3 years ago
3 0

Answer:

2. When substituting x=2 and y=1 into the equation, you get a true statement.

<em>Hope this helps you.</em>

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If y =-5 when x =12.5 find x when y =15
Naily [24]

Answer:

x = -37.5

Step-by-step explanation:

Set up a proportion so -5/12.5 = 15/x

Solve for x so -5x = 15(12.5) so -5x = 187.5 so x = -37.5

6 0
3 years ago
I need help please!!!
vazorg [7]

963i think its probaly wrong


6 0
3 years ago
the ratio of boys to girls at the beach cleanup was 7:8. If there were 43 boys, how many girls were there?
faltersainse [42]
I'm pretty sure there were 48 girls at the beach clean up. 43 ÷ 7 = 6.14 (6 cause there's not gonna be floating males with missing body parts). So we multiply 6 x 8 and we get 48.
7 0
3 years ago
(5 Points)<br> all (1 – 3K)<br> -396<br> 0-374<br> 0 -198<br> 0 -187
Triss [41]

Answer:−3K−395,−374,−198,−187

Step-by-step explanation:

Remove parentheses.

1−3K−396,0−374,0−198,0−187

Simplify  1-3K-3961−3K−396  to  -3K-395−3K−395.

−3K−395,0−374,0−198,0−187

Simplify  0-3740−374  to  -374−374.

−3K−395,−374,0−198,0−187

Simplify  0-1980−198  to  -198−198.

−3K−395,−374,−198,0−187

Simplify  0-1870−187  to  -187−187.

−3K−395,−374,−198,−187

6 0
3 years ago
There are 15 girls and 25 boys in a science club what percent of the members were girls
otez555 [7]
   15      /      40             =    .375
total #      total #
of girls      of students

.375 = 37.5%

15/40 as a fraction ---> simplify ---> 3/8
3 0
3 years ago
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