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Over [174]
3 years ago
15

On a standardized exam, the scores are normally distributed with a mean of 300 and a standard deviation of 20. Find the z-score

of a person who scored 302 on the exam.
Mathematics
1 answer:
sveta [45]3 years ago
6 0

Subtract the given score x from the mean µ and divide it by the standard deviation σ :

z = (x - µ) / σ = (302 - 300) / 20 = 0.1

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Calculate simple interest earned on a deposit of $1000 at a rate of 3% for 10 years.​
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4 0
3 years ago
The triangles below are similar. Triangle S R P. Angle S is 54 degrees, R is 41 degrees, P is 85 degrees. Triangle X Y Z. Angle
rewona [7]

Answer:

The similarity statements that describes the relationship between the two triangles are

Triangle S R P is similar to triangle X Z Y.

Triangle R S P is similar to triangle Z X Y.

Triangle R P S is similar to triangle Z Y X.

Step-by-step explanation:

Given:

Triangles below are similar,

In ΔSRP

∠S = 54 ° , ∠R = 41° , ∠P = 85°

In ΔXYZ

∠X = 54 ° , ∠Z = 41° , ∠Y = 85°

Solution:

If two triangles are similar then their corresponding angles are Equal.

When the two triangles are Similar then their Vertices are correspondence to each other. the correspondence of vertices are as

For, Δ SRP ~ Δ XZY

S ↔ X        ∠S ≅ ∠X = 54°

R ↔ Z        ∠R ≅ ∠Z = 41°

P ↔ Y        ∠P ≅ ∠Y = 85°

The true statement  

Triangle S R P is similar to triangle X Z Y.

Triangle R S P is similar to triangle Z X Y.

Triangle R P S is similar to triangle Z Y X.

  • Triangle P R S is similar to triangle X Y Z,

Not correct it should be

Triangle P R S is similar to triangle Y Z X,

  • Triangle P S R is similar to Triangle Z Y X

Not correct it should be

Triangle P S R is similar to Triangle Y X Z.

  • Triangle S P R is similar to triangle X Z Y

Not correct it should be

Triangle S P R is similar to triangle X Y Z

3 0
3 years ago
Read 2 more answers
1. Five gallons of lemonade cost $8.00, which is<br> a rate of _____per____.
Hitman42 [59]

Answer:

1. $1.60

2. gallon

Step-by-step explanation:

Each gallon of lemonade would cost $1.60.

The rate is $1.60 per gallon.

Hope it helps!

3 0
4 years ago
Read 2 more answers
MARKING BRAINLIST PLEASE HELP TYSM!!
gogolik [260]

Answer:

its 20 2/3

Step-by-step explanation:

bc 4 * 5 which equals 20 and then just add a 2/3

3 0
3 years ago
Read 2 more answers
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