All categories

3 years ago

Suppose the scores on a history quiz are normally distributed with a mean of 73 and a standard deviation of 4.

Mathematics

2 answers:

timurjin [86]3 years ago

7 0

Answer:

I really wasn't sure on this one, and I got it wrong on the quiz but the answer is the yellow option which is <u>Scores above 77</u>

explanation:

s2008m [1.1K]3 years ago

6 0

B scores below 75....!!!!

You might be interested in

Help me to solve thisssss

m_a_m_a [10]

Answer:

(a + 3)

Step-by-step explanation:

a³ - 9a = a(a² - 9) = a(a + 3)(a - 3)

a² + a - 6 = (a - 2)(a + 3)

a⁴ + 27a = a(a³ + 27) = a(a - 3)(a² + 6a + 9) = a(a - 3)(a + 3)(a + 3)

HCF = (a + 3)

Hope it helps.

;)

7 0

2 years ago

Mai will spend more than $23 on gifts. So far, she has spent $15. What are the possible additional amounts she will spend? Use c

mote1985 [20]

Answer:

c = ≥ (23 - 15) therefore c = ≥ 8

3 0

3 years ago

The region bounded by y=(3x)^(1/2), y=3x-6, y=0

Ganezh [65]

Answer:

4.5 sq. units.

Step-by-step explanation:

The given curve is $y = (3x)^{\frac{1}{2} }$

⇒ $y^{2} = 3x$ ...... (1)

This curve passes through (0,0) point.

Now, the straight line is y = 3x - 6 ....... (2)

Now, solving (1) and (2) we get,

$y^{2} - y - 6 = 0$

⇒ (y - 3)(y + 2) = 0

⇒ y = 3 or y = -2

We will consider y = 3.

Now, y = 3x - 6 has zero at x = 2.

Therefor, the required are = $\int\limits^3_0 {(3x)^{\frac{1}{2} } } \, dx - \int\limits^3_2 {(3x - 6)} \, dx$

= $\sqrt{3} [{\frac{x^{\frac{3}{2} } }{\frac{3}{2} } }]^{3} _{0} - [\frac{3x^{2} }{2} - 6x ]^{3} _{2}$

= $[\frac{\sqrt{3}\times 2 \times 3^{\frac{3}{2} } }{3}] - [13.5 - 18 - 6 + 12]$

= 6 - 1.5

= 4.5 sq. units. (Answer)

7 0

2 years ago

A sequence can be defined by the explicit formula . Which recursive formula represents the same sequence of numbers?

matrenka [14]

Answer:

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

Describe how you could draw a diagram for a problem about finding the total length for two strings, 15 inches long and 7 inches

Varvara68 [4.7K]

Two strings are 15 inches and 7 inches long.

You could draw a diagram that has two rulers (that are longer than 12 inches).

Draw a piece of string that is exactly 15 inches on one ruler.
Draw another piece of string on the other ruler at exactly 7 inches.

Then you can find the total length of the two strings by adding 15 and 7 inches.
15 + 7 = 22

The total length of both the strings is 22 inches. You can draw a ruler and a piece of string on it at 22 inches.

5 0

3 years ago