Answer:210. 2/3
you would have to add all the numbers to get the answer even the fractions
Answer:
5:9
Step-by-step explanation:
the ratio of the number of girls to the number of boys who attended the competition is 5:9
Olá boa tarde meu nome é "Guilherme" sou de Brasil e vou resolver a sua pergunta
a ) 2x - 2y = 12
{ a 2
{ b 2
{ c 12
<u>/</u><u>\</u> = b elevado 2 -4 a.c
<u>/</u><u>\</u> = (2) elevado 2 -4 . 24
<u>/</u><u>\</u> = 4 -4 . 24
<u>/</u><u>\</u> = 24
X = <u>-</u><u>b</u><u>+</u><u>/</u><u> </u><u>/</u><u>\</u><u> </u> = <u> </u><u>2</u><u> </u><u>-</u><u> </u><u>5</u>
2a 2
<u> </u><u>5</u>
2
<u> </u><u>5</u>
2
S = {20,10}
b) 29. - 3y = -2
{ a = 29
{ b = -3
{ c = -2
<u>/</u><u>\</u> = b elevado 2 -4 a.c
<u>/</u><u>\</u> = (-6) -4 . 58
<u>/</u><u>\</u> = -10 . 58
<u>/</u><u>\</u> = -48
X = <u> </u><u>b</u><u> </u><u>+</u><u> </u><u>/</u><u> </u><u>/</u><u>\</u><u> </u> = <u> </u><u>-</u><u>3</u><u> </u><u>+</u><u> </u><u>24</u><u> </u>
<u> </u><u>5</u>
3
<u> </u><u>5</u>
3
S = { 15,15}
Espero ter ajudado
2a 2
Answer:
Store 1= $150
Store 2= $250
Step-by-step explanation:
Let the amount invested by store 1 be x while store 2 be y hence
10x-8y=1300 Eqn 1
Make x the subject of the formula for the first equation
10x=1300+8y divide both sides by 10
X=130+0.8y
6x+5y=2250 Eqn 2
Substituting where there’s x with 130+0.8y in equation 2 we obtain
6(130+0.8y)+5y=2250
780+4.8y+5y=2250
9.8y+780=2250
9.28y=2250-780=1470
Y=1470/9.8=150
X=130+0.8y= 130+0.8(150)=250
Answer:
3 machine
Step-by-step explanation:
It is given that 6 machine each working at the same rate can complete the work in 12 days
We the has to complete in 8 days
Let we need x extra machine to complete the work in 8 days
So total number of machines =x+6
Now according to man work day equation 



x=3 machine