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lana [24]
3 years ago
6

A​ student's scores on five tests are 98​, 99​, 86​, 89 and 70. What must the score be on the next test so that the average is 8

8​? Choose an equation you would use to solve the given problem
Mathematics
1 answer:
vitfil [10]3 years ago
7 0

Answer:

x = 86

Step-by-step explanation:

The average of a set of data is equal to the sum of the numbers divided by

number of the sample . In our case we have

98 , 99 , 86 , 89 , 70   and x the uknown, and we know that the average need to be 88 so

(98+99+86+89+70+x ) / 6  = 88

442 + x  = 528

x  =  528 - 442

x = 86

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Whats the mean of 72+72+72+79+82+82+88?
creativ13 [48]

Answer:

78.1428571429

Step-by-step explanation:

6 0
2 years ago
What is the answer pls help
rewona [7]
Ya it’s 94 i’m pretty sure
7 0
2 years ago
What is a polynomial function in standard form with zeroes 1, 2, -2. and -3
Juli2301 [7.4K]
<span>A polynomial with the given zeros can be represented as
   f(x) = (x-1)(x-2)(x+2)(x+3).
   Note that if you set f(x) = 0, then 1,2,-2, and -3 certainly are the solutions. From here, we simply multiply/expand out the polynomial. We can do this in a variety of ways, one of which is taking the left two and right two products separately. We have
   (x-1)(x-2) = x^2 - 3x + 2
   and
   (x+2)(x+3) = x^2 + 5x + 6.
   This gives that
   f(x) = (x^2 - 3x + 2) (x^2 + 5x + 6).
   Expanding this expression out then gives us our answer as
    f(x) = x^4 + 2x^3 - 7x^2 - 8x + 12
   or answer choice B.</span>
3 0
3 years ago
Help please!!
bazaltina [42]

Answer: Part A = (100% - 80%)P = 35, Part B = 140

<u>Step-by-step explanation:</u>

Percentage:  Like + Don't like = 100%

                     80%  + Don't like = 100%

                  <u>  -80%                    </u>    <u> -80% </u>

                                  Don't like = 20%

People: 20% of Patrons = Don't Like

             0.20  x Patrons = 35

          <u>÷ 0.20                  </u> <u> ÷ 0.20  </u>  

                           Patrons = 175

<u>Now, let's write the equation we used to get that answer</u>:

Let P represent the total number of patrons, then the equation is:

 (100% - 80%)P = 35

= (1.00 - 0.80)P = 35

=       0.20P     = 35

 =             P      = 175

<u>Part B:  </u>

80% of Patrons = Like

0.80  x    175      = Like

         140            = Like


6 0
3 years ago
Find the area of the figure. Round to the nearest TENTH.
Bad White [126]

Answer:

Step-by-step explanation:

12 multiplied by 9 is 108. That gives us the square. The triangle base is 9. The height is 7. 7 multiplied by 9 is 63. 63 divided by 2 is 31.5. 108 add 31.5 is 139.5 cm squared.

8 0
2 years ago
Read 2 more answers
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