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Zinaida [17]
4 years ago
7

The exam scores of all 500 students were recorded and it was determined that these scores were normally distributed. If Jane's s

core is 0.8 standard deviation above the mean, then how many, to the nearest unit, students scored above Jane?
A. 394
B. 250
C. 400
D. 106
only answer if you know
Mathematics
2 answers:
olganol [36]4 years ago
7 0
The answer to this is D i did the math i am positive it is right
Wewaii [24]4 years ago
6 0
The answer is D I think if not sorry
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A glass is 4/7 full. Then 70 cm³ orange juice is poured in. The glass is now 3/4 full.
Nataly_w [17]

Answer:

The volume of the glass is 217.8 cm³

Step-by-step explanation:

If the glass were initially 4/7 full, that means 3/7 of the volume is still available to hold more juice.

Let v represent the volume of the glass.  

Then (3/7)v + 70 cm³ = (3/4)v.

We need to solve this for v.

Here the LCD is 28.  Thus,

(3/7)v + 70 cm³ = (3/4)v →  (12/28)v + 70 cm³ = (21/28)v.

Subtracting  (12/28)v from both sides, we get:

70 cm³ = (9/28)v.

We can isolate v by mult. both sides by the inverse of 9/28, which is 28/9:

(28/9)(70 cm³) = v

The volume of the glass is 217.8 cm³

3 0
3 years ago
Read 2 more answers
Abe is going to plant 54 oak trees and 27 pine trees. Abe would like to plant the trees in rows that all have the same number of
attashe74 [19]

Answer: There are 27 trees that Abe can plant in each row. And there are 1 pine tree and 2 oak tree in each row.

Explanation:

Since we have given that

Number of oak trees = 54

Number of pine trees = 27

According to question, we have given that Abe wants to plant the trees in rows that all have the same number of trees and are made up of only one type of tree.

So, the greatest number of trees is given by

H.C.F\ of\ 27\ and\ 54=27

Hence, there are 27 trees that Abe can plant in each row.

Therefore, there are \frac{27}{27}=1\text{ pine tree and }\frac{54}{27}=2\text{ oak trees.}

4 0
4 years ago
Read 3 more answers
Factor the trinomial into binomials then solve?
Daniel [21]

Answer:

x = -10, x=5

Step-by-step explanation:

x^2 +5x - 50 = 0

What two number multiply to -50 and add to 5

10 * -5 = -50

10 + -5 = 5

( x+10) (x-5) =0

Using the zero product property

x+10 =0    x-5 =0

x+10-10 =0-10   x-5+5=0+5

x= -10                 x =5

4 0
3 years ago
PLEASE ANSWER ALL I NEED HELP
aev [14]

9514 1404 393

Answer:

  1. no
  2. yes
  3. no
  4. no
  5. no
  6. yes

Step-by-step explanation:

If a vertical line can be made to intersect the graph at more than one point, the relation is not a function.

Relations 1, 3, 4, 5 have points one above another, so are not functional relations.

Relations 2 and 6 pass the vertical line test, so are functional relations.

6 0
3 years ago
1. 1.01 x 1.1 *<br> 2.11<br> 11.111<br> 1.1<br> 1.011
Semenov [28]

Answer: 1.1

1.01 x 1.1 = 1.111

I hope this is good enough:

8 0
3 years ago
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