A person's blood type is denoted with the letters A, B, and O, and the symbols + and - . The blood type A+ is read as A positive. The blood type B - is read as B negative. Use the data to write a ratio for the comparison in 3 different ways.

Question

13-05-2021
Mathematics

contestada

A person's blood type is denoted with the letters A, B, and O, and the symbols + and - . The blood type A+ is read as A positive. The blood type B - is read as B negative. Use the data to write a ratio for the comparison in 3 different ways.

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MrRoyal MrRoyal · Answer 1 · 2021-05-17T12:23:02+02:00

Answer:

(a) O+ to A+

[tex]O+:A+=90:45[/tex]

[tex]O+:A+=18:9[/tex]

[tex]O+:A+=2:1[/tex]

(b) AB- : AB+

[tex]AB-:AB+ = 6:4[/tex]

[tex]AB-:AB+ = 3:2[/tex]

[tex]AB-:AB+ = 12:8[/tex]

(c): B+ to total

[tex]B+ : Total = 20 : 195[/tex]

[tex]B+ : Total = 4 : 39[/tex]

[tex]B+ : Total = 40 : 390[/tex]

Step-by-step explanation:

Given

[tex]A+ = 45[/tex] [tex]B+ = 20[/tex] [tex]AB+ =6[/tex] [tex]O+=90[/tex]

[tex]A-=21[/tex] [tex]B-=0[/tex] [tex]AB-=4[/tex] [tex]O-=9[/tex]

[tex]Total = 195[/tex]

See attachment

Required

Solving (a): O+ to A+

We have:

[tex]A+ = 45[/tex]

[tex]O+=90[/tex]

So, the ratio is:

[tex]O+:A+=90:45[/tex] ---- first comparison

Divide by 5

[tex]O+:A+=90/5:45/5[/tex]

[tex]O+:A+=18:9[/tex] ---- Second comparison

Divide by 45

[tex]O+:A+=90/45:45/45[/tex]

[tex]O+:A+=2:1[/tex] ---- Third comparison

Solving (b): AB- to AB+

We have:

[tex]AB+ =6[/tex]

[tex]AB-=4[/tex]

So, the ratio is:

[tex]AB-:AB+ = 6:4[/tex] ---- first comparison

Divide by 2

[tex]AB-:AB+ = 6/2:4/2[/tex]

[tex]AB-:AB+ = 3:2[/tex] ---- Second comparison

Multiply by 2

[tex]AB-:AB+ = 6*2:4*2[/tex]

[tex]AB-:AB+ = 12:8[/tex] ---- Third comparison

Solving (c): B+ to total

We have:

[tex]B+ = 20[/tex]

[tex]Total = 195[/tex]

So, the ratio is:

[tex]B+ : Total = 20 : 195[/tex] ---- first comparison

Divide by 5

[tex]B+ : Total = 20/5 : 195/5[/tex]

[tex]B+ : Total = 4 : 39[/tex] ---- Second comparison

Multiply by 2

[tex]B+ : Total = 20*2 : 195*2[/tex]

[tex]B+ : Total = 40 : 390[/tex] ---- Third comparison

A​ person's blood type is denoted with the letters​ A, B, and​ O, and the symbols​ + and - . The blood type​ A+ is read as A positive. The blood type B - is read as B negative. Use the data to write a ratio for the comparison in 3 different ways.

Respuesta :

Otras preguntas

A person's blood type is denoted with the letters A, B, and O, and the symbols + and - . The blood type A+ is read as A positive. The blood type B - is read as B negative. Use the data to write a ratio for the comparison in 3 different ways.