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Brut [27]
3 years ago
6

Solve the equation for all values of x by completing the squarex²+67=18x​

Mathematics
1 answer:
melamori03 [73]3 years ago
5 0

Answer:

x=±\sqrt[]{4}+9

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Mark and his three friends ate out at Applebee's. (Hint* 4 total people) Their bill totaled $52.35. If they left the server a 20
SpyIntel [72]

Answer:

Unitary cost= $15.705

Step-by-step explanation:

Giving the following information:

Their bill totaled $52.35. They left the server a 20% tip.

<u>First, we need to calculate the total cost of the meal:</u>

Total cost= 52.35*1.2= $62.82

<u>Now, we can split it into 4 equal parts:</u>

Unitary cost= 62.82 / 4

Unitary cost= $15.705

7 0
3 years ago
The ELISA test was an early test used to screen blood donations for antibodies to HIV. A study (Weiss et al. 1985) found that th
patriot [66]

Answer:

0.057258

Step-by-step explanation:

From the statement of the problem, the following information were given:

  • P(Positive|HIV)=0.979
  • P(Negative|No HIV)=0.919
  • P(HIV)=0.005

The following can be derived:

  • P(Positive|No HIV)=1-P(Negative|No HIV)=1-0.919=0.081
  • P(No HIV)=1-P(HIV)=1-0.005=0.995

We are to determine the probability that a person has HIV given that they test positive. [P(HIV|Positive)]

Using Baye's theorem for Conditional Probability

P(HIV|Positive)=\dfrac{P(Positive|HIV)P(HIV)}{P(Positive|HIV)P(HIV)+P(Positive|No HIV)P(No HIV)}=\dfrac{0.979*0.005}{0.979*0.005+0.081*0.995}

P(HIV|Positive)=0.057258

The probability that a random person tested has HIV given that they tested positive is 0.057258.

5 0
4 years ago
Select all angles that are coterminal with an angle of rotation of 300 degrees
geniusboy [140]
The answers would be A,B,D, and F!
7 0
4 years ago
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Jonathan went to the movies with $48 he earned at his after-school job. The ticket cost $8.75. He spent $7.45 for refreshments.
aleksley [76]

Answer:

8.75+7.45=16.2. 16.2 is equal to $16.20 so 48.00-16.20=31.8. Jonathan had $31.80 left.

Step-by-step explanation:

7 0
3 years ago
What is the value of 2/5 + 5/7
Alex787 [66]

Answer:

<h3>2/5 + 5/7 = 39/35</h3>

Step-by-step explanation:

<h3>I hope it helps ❤❤❤❤</h3>

4 0
3 years ago
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