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3 years ago

Can someone please help me with this!! Please and Thank You!!!

Mathematics

1 answer:

harina [27]3 years ago

5 0

Answer:

17,18, or 19

Step-by-step explanation:

take 24 and subtract 7 then because you need three use that number and the two before it

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SAT scores (out of 1600) are distributed normally with a mean of 1100 and a standard deviation of 200. Suppose a school council

fgiga [73]

Answer:

0.91517

Step-by-step explanation:

Given that SAT scores (out of 1600) are distributed normally with a mean of 1100 and a standard deviation of 200. Suppose a school council awards a certificate of excellence to all students who score at least 1350 on the SAT, and suppose we pick one of the recognized students at random.

Let A - the event passing in SAT with atleast 1500

B - getting award i.e getting atleast 1350

Required probability = P(B/A)

= P(X>1500)/P(X>1350)

X is N (1100, 200)

Corresponding Z score = $\frac{x-1100}{200}$

$P(X>1500)/P(X>1350)\\= \frac{P(Z>2)}{P(Z>1.25} \\=\frac{0.89435}{0.97725} \\=0.91517$

4 0

3 years ago

Help plz................

Pani-rosa [81]

You have the formula. Put in the numbers and solve for r.

The interest earned in 4 years on 5000 is (6500 -5000) = 1500.
.. I = Prt
.. 1500 = 5000*r*4
.. 1500/20000 = r = .075 = 7.5% . . . . . . matches selection B

7 0

2 years ago

Miss Martinez purchase two kinds of candy for a math game. Diplo pops cost $.50 each and the sneakers cost $.60 each. She purcha

torisob [31]

Answer:

The number of Diplo pops D = 18

The number of sneakers S = 12

Step-by-step expla nation:

Given:

Cost of one Diplo pops = $.50

Cost of one sneakers = $.60

Total number of candies purchased = 30 pieces

cost of the number of candies purchased = $16.80

To Find:

Number of each type of candies = ?

Solution:

Let

The number of Diplo pops be D

The number of sneakers be S

Total number of candies = 30

S+D = 30

S= 30 - D--------------------------------------(1)

and cost of 30 candies is $16.80

S(0.50) + D(0.60) = 16.80----------------(2)

Substituting (1) in (2)

(30 - D)(0.50) + D(0.60) = 16.80

15 - 0.50D +0.60D = 16.80

15 + 0.10D = 16.80

0.10D = 16.80 - 15

0.10D = 1.80

D = $\frac{1.80}{0.10}$

D = 18

So the number of Diplo pops = 18

Number of sneakers S= 30 - 18 = 12

7 0

2 years ago

How do i solve 5(-6 3m)

guajiro [1.7K]

I Think The Answer Is -20 Or 66...Because When I Wrote It Out On Paper I Tried To Solve For Me & I Came Up With 66 But When I Wrote It Out Once More I Came Up With -20..Hope I Helped.

7 0

2 years ago

FIRST PERSON WHO ANSWERS GETS BRAINLIST

kipiarov [429]

Answer:

Perimeter of a polygon with 31 sides = (side length) x 31 = 279 units

Area of a polygon with 31 sides = (n x Side2 x cot (Π/n))/4 = (n x 92 x cot (Π/31))/4 = 6173.16 square units

Sum of the interior angles of a polygon with 31 sides = (n-2) x 180 degrees = (31-2) x 180 degrees = 5220 degrees

Interior Angle of a polygon with 31 sides = (n-2) x 180/n degrees = (31-2) x 180/31 degrees = 168.38 degrees

Exterior angle of a polygon with 31 sides = 180 - Interior Angle = 180 - 168.38 = 11.61 degrees

Inradius = Radius of In-circle = (side length) x cot (Π/31) = 9 x cot 5 = 88.5 units

Circumradius = Radius of Circum-circle = (side length) x cosec (Π/31) = 9 x cosec 5 degrees = 88.96 units

Symmetry Group = D31 31 rotational symmetries and 31 reflection symmetries. The "D" stands for di-hedral.

Step-by-step explanation:

here is your answer if you like my answer please follow

6 0

2 years ago