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kap26 [50]
3 years ago
15

On discovering that her family had a 70% risk of heart attack, Erin took a treadmill test to check her own potential of having a

heart attack. The doctors told her that the reliability of the stress test is 67%. The test predicted that Erin will not have a heart attack. What is the probability after the test was taken that she will not have a heart attack?
A.) 0.099
B.) 0.201
C.) 0.231
D.) 0.469
Mathematics
2 answers:
Ghella [55]3 years ago
8 0
The probability of Erin not having a heart attack according to her family history would be 30%.

The probability of the test predicting correctly is 67%.

Therefore, the probability of the test correctly predicting that Erin will not have a heart attack would be (0.30)(0.67) = 0.201 or 20.1%.
BaLLatris [955]3 years ago
3 0

Answer:

I don't know what the answer is, but the test say B. 201 is wrong

Step-by-step explanation:

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Need answer ASAP ASAP please ASAP ASAP thank you:)
Paha777 [63]

Answer:

42°

Step-by-step explanation:

3x + 54° = 180° [Supplementary angles]

=> 3x = 180 - 54

=> 3x = 126

=  > x =  \frac{126}{3}

=> <u>x = 42</u><u>°</u><u> </u><u>(Ans)</u>

5 0
3 years ago
Read 2 more answers
Shelley is making a rectangular blanket with dimensions 8 1/2 feet by 5 1/2 feet. She purchases 10 yards of ribbon to put a bord
scoray [572]

Answer:

there are no options listed, but some statements that are true about this question are:

  • total perimeter = (8.5 x 2) + (5.5 x 2) = 28 feet = 9¹/₃ yards
  • since Shelley purchased 10 yards of ribbon, it should be enough
  • after finishing the blanket, Shelley will have 2 feet of ribbon left

6 0
3 years ago
What is the decimal multiplier to increase by 3%?
vaieri [72.5K]

Answer:

1.03

Step-by-step explanation:

The increase is 3% above the original 100%, thus

multiplier = 100 + 3 = 103% = \frac{103}{100} = 1.03

5 0
3 years ago
Sal made 8 ft of sausage links on Friday morning. He used 4 ft for dinner service on Friday night. On Saturday morning, he made
oee [108]

Answer:

Net change in the amount of sausage Sal had from Friday morning until after dinner service Saturday night = 8 - 0 = 8 ft

Step-by-step explanation:

Amount of  sausage links made on Friday morning = 8 ft

Amount of  sausage links used on Friday night = 4 ft

Amount of  sausage links remaining = 8 - 4 = 4ft           (i)

Amount of  sausage links made on Saturday morning = 8 ft         (ii)

So,

Total amount of  sausage links = 8 + 4 = 12 ft   (from (i) and (ii) )

Amount of  sausage links used on Saturday night = 12 ft

Amount of sausage links remaining = 12 - 12 = 0 ft

Net change in the amount of sausage Sal had from Friday morning until after dinner service Saturday night = 8 - 0 = 8 ft

8 0
3 years ago
$149 guitar; 29% discount​
Vikki [24]
Divide number of guitars by 100% and multiply into discount given



149/100 x 29

1.49 x 29

43.21



$43.21 had been removed

Therefore $105.79 is the guitar cost after discount



Hope it was useful ☻


5 0
3 years ago
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