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Both of them help please

Both of them help please-example-1

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3 votes

Answer:

7:

check if 82°F= 30°C,

we know that 5F =9C+160

F° = (9C+160)/5

we apply the formula to check

(30°C*9 +160)/5 = 86°F

Sahsa is wrong, 30°C=86°F

8 :

BMI =m/h²

Tina : 48,8/1.56²=20.05....

Tina is not underweight

Stephen : 68.5/1.8²=21.1419...=21.14

BMI = 21.14

he wants his BMI =20

we calculate the weight he should weigh

x= weight

20=x/1.8²

x=20*1.8²=64.8

he should weigh 64.8kg for a BMI of 20

he needs to lose 68.5-64.8 =3.7kg

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