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Mandarinka [93]
3 years ago
14

Kara has five exam scores of 93, 67, 82, 71, and 94 in her biology class. What score does she need on the final exam to have a m

ean grade of 80?
Round your answer to two decimal places, if necessary. (All exams have a maximum of 100 points.)
Mathematics
2 answers:
Dahasolnce [82]3 years ago
7 0

Answer:

She needs at least 73%

Step-by-step explanation:

1. add all of the numbers up and d the quantity to find

93+67+82+71+94/5

=407/5

=81.

2. try diffrent numbers

407+73/6

=480/6

=80

She needs at least 73%

Stolb23 [73]3 years ago
6 0

Answer:

A score of 73

Step-by-step explanation:

Five exam scores + the final exam = mean (average) of 80.

First find the total points that you need to make an 80 average 80 × 6 = 480 points.

The five exam scores + x score = 480 points.

93 + 67 + 82 + 71 + 94 + x = 480

407 + x = 480

x = 480 - 407

x = 73

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If someone can answer this, you are BEYOND SMARTT!!! But tell me how to do it too!!!!
andrezito [222]
Look at all the choices

we know that at t = 0, the height of the rock is 16

choices H and I do not have a value of 16 at t = 0.

H: h(0) = -5.2(0)² + 24(0) - 12 = -12
I: h(0) = -4.2(0)² + 26(0) - 20 = -20

so we are left with F and G

if we take choice F and plug in t = 1
h(1) = -4.7(1)² - 25(1) + 16 = -13.7
if we take choice G and plug in t = 1
h(1) = -4.7(1)² + 25(1) + 16 = 36.3

only choice G works for us since it has 36.3 at t = 1

you could have also put these points in a graphing calculator and then use the quadratic regression feature to get an equation that will model this data
8 0
3 years ago
PLEASE ANSWER THIS ASAP !!!!!
snow_tiger [21]

Answer:

-5

Step-by-step explanation:

(-4-11)/(16-13) = -5

4 0
3 years ago
What is the answer toY+1.7=8.96
chubhunter [2.5K]
Y=7.26
To get this answer, you must isolate the y by subtracting 1.7 from both sides. On the left side, it cancels, and on the right side, you get 8.96-1.7, which simplifies to 7.26. So y=7.26


4 0
3 years ago
What is the opposite of 54?
Romashka-Z-Leto [24]

Answer:

-54

Step-by-step explanation: anything positive that u need the oppossite from its going to be the same number but negative

4 0
3 years ago
Read 2 more answers
The formula to change F to C is F equal 9/5 C + 32. If the temperature is 21.5 C what is it in F?
Umnica [9.8K]

Answer:

F=70.7

Step-by-step explanation:

This is a simple substitution problem.

  1. The formula to change Fahrenheit to Celsius is F=\frac{9}{5}\left(C\right)+32.
  2. They give you C, so substitute it into the problem, which would give you F=\frac{9}{5}\left(21.5\right)+32.
  3. Simplify the right side of the equation by multiplying \frac{9}{5} by 21.5.
  4. Now, add 32 to 38.7, which should have been your answer to the previous step.
  5. You should now have F= 70.7 as your answer.
4 0
3 years ago
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