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melisa1 [442]
3 years ago
5

For the first four days of a five day vacation, the mean temperature was 80 degrees. What must the temperature be on the fifth d

ay in order for the mean temperature to be 82 degrees?
Mathematics
1 answer:
V125BC [204]3 years ago
6 0

Answer:

The 5th day must be 90

Step-by-step explanation:

The first 4 days averaged out to 80

You can find their total just by multiplying by 4. That won't tell you the exact values, but it will tell you their total when you add the 4 of them together.

80*4 = 320

Now you need to add another day into the mix. Call it x

320 + x

Now there are 5 days, not 4, and the new total is 82.

(320 + x) / 5 = 82          Multiply both sides by 5

5*(320 + x) / 5 = 82 *5

320 + x = 410                 Subtract 320

-320        -320

x = 90

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consumer math / answer is A

Step-by-step explanation:

3 0
3 years ago
If (x - h) = 4 and (y - k) = 3, what is the radius of the circle above?
I am Lyosha [343]
(x-h)²+(y-k)²=r² is the equation of a circle with radius of r


so if x-h=4 and y-k=3 then

4²+3²=r²
16+9=r²
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sqrt both sides
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5 0
2 years ago
In which quadrant is the point (5, 8)
Ganezh [65]
(5, 8) has two positive numbers. In case you don't remember

Quadrant I: Both positive
Quadrant II: Negative x value, Positive y value
Quadrant III: Both negative
Quadrant IV: Positive x value, Negative y value

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3 0
3 years ago
Anyone know how to do this?
lara [203]
Area of the rectangle ==> 9x13 =117 cm²

Area of the right triangle ==> 11x(5)/2 =55/2 cm²


Total area = 117 + 55/2 = 289/2 = 144.5 cm²
8 0
2 years ago
A firm offers routine physical examinations as part of a health service program for its employees. The exams showed that 8% of t
oee [108]

Answer:

The Probability = 0.20

Step-by-step explanation:

From the question stated, the first step to take is to find probability that an employee selected at random will need either eyeglasses or major dental work

Solution

Given

Now,

The exams showed tha the number of employees needed eyeglasses = 8%

Employees that needed major dental work = 15%

Employees that needed  both eyeglasses and major dental work =3%

Thus,

The P(needed eyeglasses ) = 8% = 0.08

P(major dental work) = 15% = 0.15

P(eye glasses  and major dental work) = 3% = 0.03

The probability that an employee selected at random will need either eyeglasses or major dental work is  given as

= P(eye glasses ) + P(major dental work) - P(eyeglasses and major dental work)

= 0.08 + 0.15 - 0.03 = 0.20

Therefore the Probability = 0.20

5 0
2 years ago
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