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AleksAgata [21]
3 years ago
15

Jane had a rectangular frame 30 inches in length and 24 inches in width. Stan made a similar frame that is smaller in size. Whic

h of the following could be the dimensions of the frame Stan made?
A Length = 20 inches, width = 25 inches
B Length = 15 inches, width = 8 inches
C Length = 24 inches, width = 18 inches
D Length = 15 inches, width = 12 inches
Mathematics
2 answers:
Elodia [21]3 years ago
7 0
C. Both 30 and 24 are reduced by 6, 24-6=18 and 30-6=24
Rom4ik [11]3 years ago
3 0
.......the answer is C.
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the length of the fish tank is  length=13cm . Correct option is A)

<u>Step-by-step explanation:</u>

Here we have , Peter has just purchased a small rectangular fish tank that holds 910 milliliters of water. The tank has a width of 7 cm and a height of 10 cm.  We need to find What is the length of the fish tank . Let's find out:

The fish tank is in the shape of cuboid , and we know that volume of cuboid :

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Now , according to question we have following parameters :

V=910ml=910cm^3\\w=7cm\\h=10cm

Therefore , Putting theses values in above equation we get :

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Therefore , the length of the fish tank is  length=13cm . Correct option is A)

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4 years ago
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Scores on a standardized test are normally distributed with a mean of 480 and a standard deviation of 90. What proportion of the
Aloiza [94]

Answer:

Step-by-step explanation:

Since the scores on the standardized test are approximately normally distributed, we would apply the formula for normal distribution which is expressed as

z = (x - µ)/σ

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µ = mean score

σ = standard deviation

From the information given,

µ = 480

σ = 90

1) The proportion of scores above 700 is expressed as

P(x > 700) = 1 - P(x ≤ 700)

For x = 700,

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Looking at the normal distribution table, the probability corresponding to the z score is 0.99

P(x > 700) = 1 - 0.99 = 0.01

the proportion of scores above 700 is 0.01

2) For the 25 percentile, z = - 0.67. Therefore,

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90 × - 0.67 = x - 480

- 60.3 = x - 480

x = - 60.3 + 480

x = 419.7

3) if Someone’s score is 600, then

z = (600 - 480)/90 = 1.33

From the table, the percentileis

0.91 × 100 = 91%

4) For x = 420,

z = (420 - 480)/90 = - 0.67

The proportion is 0.25

For x = 520,

z = (520 - 480)/90 = 0.44

The proportion is 0.67

The proportion of the score between 420 and 520 is

0.67 - 0.25 = 0.42

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Answer:

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Answer:

Los datos son piezas individuales de información fáctica registradas y utilizadas con fines de análisis. Es la información en bruto a partir de la cual se crean las estadísticas. Las estadísticas son el resultado del análisis de datos: su interpretación y presentación. ... A menudo, estos tipos de estadísticas se denominan "datos estadísticos".

Step-by-step explanation:

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