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erma4kov [3.2K]
4 years ago
9

Describe how you could find the product of 700 and 900

Mathematics
1 answer:
gizmo_the_mogwai [7]4 years ago
6 0
7 * 9 = 63
add four 0's from 700 and 900 
630,000
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babymother [125]

Answer:    C -1

calculate it from i and imaginary numbers

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3 years ago
F(x) = 49 − x2 from x = 1 to x = 7; 4 subintervals
Setler [38]

Answe

Given,

f(x) = 49 − x² from x = 1 to x = 7

n = 4

\Delta x = \dfrac{7-1}{4}= 1.5

For x= 1

f(x₀) = 49 - 1^2 = 48

x = 2.5

f(x₁) = 42.75

x = 4

f(x₂) = 49 - 4^2 = 33

x = 5.5

f(x₃) = 49 - 5.5^2 = 18.75

x = 7

f(x₄) = 49 - 7^2 = 0

We have to evaluate the function on therigh hand point

A = \Delta x [f(x_1)+f(x_2)+f(x_3)+f(x_4)]

A = 1.5 [42.75+33+18.75+0]

A = 141.75

For Area for left hand sum

A = \Delta x [f(x_0)+f(x_1)+f(x_2)+f(x_3)]

A = 1.5 [48+42.75+33+18.75]

A =213.75

3 0
3 years ago
Scores on an English test are normally distributed with a mean of 31.5 and a standard deviation of 7.3. Find the score that sepa
vladimir1956 [14]

If X is a random variable representing test scores, then the 41st percentile is the score x such that P(X\le x)=0.41. Transform X to the random variable Z that follows the standard normal distribution via X=31.5+7.3Z:

P(X\le x)=P\left(\dfrac{X-31.5}{7.3}\le\dfrac{x-31.5}{7.3}\right)=P\left(Z\le\dfrac{x-31.5}{7.3}\right)=0.41

The z-score for the 41st percentile is about -0.2275, so

\dfrac{x-31.5}{7.3}\approx-0.2275\implies\boxed{x\approx29.8}

6 0
4 years ago
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dexar [7]

Answer:

10,120cm³

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Volume of pyramid formula:

V = \frac{l*w*h}{3}

l = length

w = width

h = height

Plug in the numbers:

V = 46*20*33/3

V = 10120

8 0
3 years ago
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Colorado, Arizona, then New Mexico is the order of the states from least to greatest total land area.
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