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Nutka1998 [239]
3 years ago
15

Question 7. Ezequiel's Biology marks are 8.3, 6.8 and 9.4 out of 10. His final grade in Biology is the mean of these three marks

a Calculate Ezequiel's final grade in Biology. Ezequiel wrote the three marks correct to the nearest unit to find his final grade in Biology.​
Mathematics
1 answer:
Paha777 [63]3 years ago
6 0

Answer:

Ezequiel's final grade is 8

Step-by-step explanation:

The average (mean) of Ezequiel's grade is:

\frac{(8.3+6.8+9.4)}{3} \approx 8.16666

which rounded to the nearest unit is 8.

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Write the set of points from −2 to 6 but excluding 3 and 6 as a union of intervals:
KengaRu [80]

Answer:

[-2,6] - {3} - {6}  =   [-2,3)  ∪   (3,6)

Step-by-step explanation:

Union Of Intervals

Let us assume two interval A =  (a,b) and  C = (c,d).

Their union is written as :   A ∪ C = (a,b) ∪ (c,d)

Now, if interval is written in form [a,b] ⇒  a and b are INCLUDED in interval

Also, if interval is written in form (a,b) ⇒  a and b are NOT INCLUDED in interval

Here, the given interval is [-2,6]

excluding 3 and 6 from this will give:

[-2,3)  ∪   (3,6)

The first set is [-2.3)   where  -2 is INCLUDED but 3 is NOT INCLUDED.

The second set is (3,6)   where 3 and 6 both are  NOT INCLUDED.

Hence,   [-2,6] - {3} - {6}  =   [-2,3)  ∪   (3,6)

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3 years ago
Please assist with this question . Will give brainliest. No links please!!!
SpyIntel [72]

Answer:

-16x^3+9x^2

Step-by-step explanation:

-4x^3-12x^3+9x^2

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2 years ago
In arithmetic what variables look like
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Variables are used in algebra and other branches of mathematis.

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7 0
2 years ago
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Find the quotient of <br> 7 divided by 8
konstantin123 [22]

Answer:

0.875

Step-by-step explanation:

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3 years ago
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2/3 (x - 7) = -2 what does x equal<br><br> (2/3 is a fraction not dividing)
ozzi

Answer:

x = 4

Step-by-step explanation:

Given

\frac{2}{3}(x - 7) = - 2

Multiply both sides by 3 to clear the fraction

2(x - 7) = - 6 ← distribute left side

2x - 14 = - 6 ( add 14 to both sides )

2x = 8 ( divide both sides by 2 )

x = 4

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3 years ago
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