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irina [24]
3 years ago
5

SAT scores are normally distributed, with a mean of 1000 and a standard deviation of 200.

Mathematics
1 answer:
Serggg [28]3 years ago
7 0

Answer:

A=95%

b=1.1%

c=108

Step-by-step explanation:

i hope i got these right

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A large rectangular movie screen in an IMAX theater has an area of 7,875 square feet. Find the dimensions of the screen if it is
pickupchik [31]

Answer:

Width=75

length=105

Step-by-step explanation:

Width=x

length=30+x

= 7875=x*30+x

x^2+30x-7875=0

x^2+105x-75x-7875=0

x(x+105)-75(x+105)=0

5 0
3 years ago
What is the intersection of plane WXYZ and plane VUYZ?
lions [1.4K]

Answer:

the first one

Step-by-step explanation:

the two planes intersect at line YZ, where they meet

tip: planes intersects at a line, just like how lines intersect at a point

hope this helps :)

6 0
3 years ago
what is the length of tw¯¯¯¯¯¯ ? segment t w with point u between t and w. segment t u is marked congruent to segment u w. segme
Gennadij [26K]
T________U________W
        16
TU=UW
16=16
 TW=TU+UW
TW=16+16
TW=32
6 0
3 years ago
Read 2 more answers
On a number line, point D is at -6, and point E is at 8. Point F lies between points D and E. If DF: FEis 3: 1, where does point
Vadim26 [7]

F is located on the numbe<u>r 4.5</u><u> </u>on the number line.

<h3></h3><h3>Where does point F lie on the number line?</h3>

We know that point D is at -6

Point E is at 8.

Point F is between D and E, such that the ratio:

DF:FE is 3:1

So if we divide the distance between D and E in 4 parts, 3 of these parts are DF, and one of these parts is FE.

First, the distance between E and D is:

distance = 8 - (-6) = 14 units.

Now, if we divide that by 4, we get:

14/4 = 3.5

Then we have:

DF = 3*(3.5) = 10.5

This means that F is at 10.5 units to the right of D, then:

F = D + 10.5 = -6 + 10.5 = 4.5

F is located on the numbe<u>r 4.5</u><u> </u>on the number line.

If you want to learn more about ratios:

brainly.com/question/2328454

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7 0
2 years ago
In 3 years, Dianna will be 4 times as old as she was 33 years ago. How old is Dianna now?
Sergeu [11.5K]

Given that In 3 years, Dianna will be 4 times as old as she was 33 years ago, her present age is 45.

<h3>How old is Dianna now?</h3>

Given that, in 3 years, Dianna will be 4 times as old as she was 33 years ago.

Let x represent the age of Dianna presently.

Dianna's age in 3 years time will be: x + 3

Dianna's age 33 years ago is: x - 33

Since in 3 years, she will be 4 times as old as she was 33 years ago.

x + 3 = 4( x - 33 )

We solve for x

x + 3 = 4x - 132

3 + 132 = 4x - x

135 = 3x

x = 135/3

x = 45

Given that In 3 years, Dianna will be 4 times as old as she was 33 years ago, her present age is 45.

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4 0
2 years ago
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