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3 years ago

On her first 5 tests, Francine scored 78%, 82%, 89%, 83% and 84%. What was her mean score?

Mathematics

2 answers:

laila [671]3 years ago

8 0

Answer:

83.2%

Step-by-step explanation: we know, mean = sum of data/ number of data

= 78+82+89+83+84

=416

now ,

416/5 = 83.2%

Leto [7]3 years ago

6 0

Answer:

83.2%

Step-by-step explanation:

Just add all the percentages together and divide it by the number of scores, which in this case is 5.

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The amoebas on a petri dish is doubling every 5 minutes. If there are currently 8 amoebas on the dish, how many will there be in

pychu [463]

Answer:

32,768.

Step-by-step explanation:

There are 12 lots of 5 minutes in 1 hour.

The equation is 8*(2^12)

= 8 * 4096

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3 years ago

Which of the following is graphed Below

Bas_tet [7]

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Step-by-step explanation:

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3 years ago

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Write the equation of a line in - form that contains the point (- 1, - 2) and is perpendicular to the line y = 5x - 10 degrees

galina1969 [7]

Answer:

y+2= -1/5(x+1)

Step-by-step explanation:

if lines are perpendicular their slopes are negative reciprocal

y=mx+b where m is the slope

y=5x-10 has the slope 5 so a perpendicular line will have slope -1/5

equation point slope form

(y-y1) = m(x-x1) where m is slope, and (x1,y1) any point that belongs to the line

y+2= -1/5(x+1)

3 0

3 years ago

Ive already asked this but please help asap!!!!! please tell me how you got the answer too

Black_prince [1.1K]

Answer is: "A"

Formula used:
V = 4/3πr^3
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7 0

3 years ago

dybincka [34]

Answer:

$57.2\ ft$

Step-by-step explanation:

we know that

The formula of slope is "rise over run", where the "rise" (means change in y, up or down) and the "run" (means change in x, left or right)

In this problem

The tangent of angle of 5 degrees is equal to the quotient of "rise over run"

Let

y ----> the rise of the ramp

x ----> the run of the ramp

$tan(5^o)=\frac{y}{x}$

we have

$y=5\ ft$

substitute and solve for x

$tan(5^o)=\frac{5}{x}$

$x=\frac{5}{tan(5^o)}$

$x=57.2\ ft$

5 0

3 years ago