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stepan [7]
3 years ago
8

A student receives test scores of 62, 83, and 91. The student's final exam score is 88 and homework score is 76. Each test is wo

rth 20% of the final grade, the final exam is 25% of the final grade, and the homework grade is 15% of the final grade. What is the student's mean score in the class?
Mathematics
1 answer:
Alborosie3 years ago
7 0

Answer:

The student's mean score in the class is 80.6

Step-by-step explanation:

we know that

To find out the student's mean score in the class, multiply each score by its worth and adds the numbers

(62+83+91)0.20+(88)0.25+(76).15=80.6

therefore

The student's mean score in the class is 80.6

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The height and diameter of a cylindrical cup are the same length. The volume of the cup is 54pi in3 what is the radius and the h
ASHA 777 [7]

Answer:

The radius of the cup is 3\ in and

the height of the cup is 6\ in

Step-by-step explanation:

we know that

The volume of the cylinder is equal to

V=\pi r^{2}h

Let

x-----> the height and the diameter of the cylinder

we have

V=54\pi\ in^{3}

h=x\ in

D=x\ in

r=(x/2)\ in

substitute the values

54\pi=\pi (x/2)^{2}(x)

simplify

54=(x/2)^{2}(x)

54=\frac{x^{3}}{4} \\ \\x^{3}=216\\ \\x=6\ in

therefore

The radius of the cup is

r=(6/2)=3\ in

The height of the cup is

h=6\ in

7 0
3 years ago
I really need help with number nine
snow_lady [41]
Take a more clear picture then I will help you
3 0
4 years ago
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Given h(x) = x2 - 2, what is the value of h(-x) ?
insens350 [35]

u just have to flip the signs,

the answer is C

7 0
3 years ago
write and solve a real world problem in which you need to find the initial value of the function. Then explain how you solved th
Mama L [17]

you are planting roses

you started at 12 noon

at 3pm, you have 80 roses left

at 6pm, you have 20 roses left

if you planted roses at a constant rate, how many roses did you start with?

so we can find the slope of this linear function as (20roses-80roses)/(6pm-3pm)=60roses/3hrs=-20roses/hr

your quantity goes down by 20 roses per hour (you plant 20 per hour)

r=-20t+?

find ?, the number of roses when t=0

at 3pm yo have 80 roses

80=-20(3)+?

80=-60+?

140=?

you had 140 roses intiailly




if you wanted an exponenntial

the town polpulationn grows at an exponential rate

the town was founded in 2000

in 2010, the town's population was 1000

in 2015, the town's populationw as 2000

find intial polpulation


exponential can be modeled by y=ab^t where y=population, t=time and b and a are constants (a=initial population)

we are given that after 10 years (2010), y=102400

after 15 years, (2015), y=3276800

so

102400=ab^{10} and 3276800=ab^{15}

divide the 2nd by the first equation, remembering our exponential properties like \frac{x^a}{x^b}=x^{a-b}

32=b^{5}

take 5th root of both sides

b=2

subsitute back

102400=ab^{10}

102400=a(2)^{10}

102400=1024a

100=a

the intial population is 100 people

7 0
3 years ago
16 üssü 5 sayısının 1 ➗ 8 i kaçtır? ​
stiks02 [169]

Answer:

The answer is 131072

Step-by-step explanation:

\frac{1}{8}  \times  {16}^{5}  = 131072

7 0
3 years ago
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