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allsm [11]
3 years ago
10

Select the equation that represents the problem let x represent the unknown number

Mathematics
2 answers:
djyliett [7]3 years ago
6 0

Answer:

D

Step-by-step explanation:

Oxana [17]3 years ago
3 0

Answer: D is the answer

Step-by-step explanation:

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Cam wrote four statements using absolute value. Which of Cam's statements is incorrect?
Rainbow [258]
The answer is C. |-31|=3
The absolute value of -31 should’ve been 31 not 3
7 0
3 years ago
Solve the given system. y = x 20 y = 6x
adelina 88 [10]
If you would like to solve the following system, you can calculate this using the following steps:

y = x - 20
y = 6 * x
_________
6 * x = x - 20
6 * x - x = -20
5 * x = -20    /5
x = -4

y = 6 * x = 6 * (-4) = -24

If you would like to solve the following system, you can calculate this using the following steps:

y = x + 20
y = 6 * x
_________
6 * x = x + 20
6 * x - x = 20
5 * x = 20    /5
x = 4

y = 6 * x = 6 * 4 = 24
8 0
3 years ago
How to solve 10(x+4)(x-4)
IceJOKER [234]

Answer:

1 Use Difference of Squares:

a^2-b^2=(a+b)(a−b).

10(x^2-4^2)

2 Simplify 4^2 to 16

10(x^​2​​ −16)

3 Expand by distributing terms.

10x^​2 −160

Step-by-step explanation:

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4 0
3 years ago
Whats the greatest common factor of 18 and 27 and 54
vodomira [7]

Answer: 9

Step-by-step explanation:

From doing the math I think it should be 9

7 0
3 years ago
Read 2 more answers
Use the Midpoint Rule and the given data to estimate the value of the integral I. (Give the answer to two decimal places.)
svlad2 [7]

Answer:

a) integral = 24.72

b) |Error| ≤ 0.4267

Step-by-step explanation:

a)

The integral:

\int_{0}^{3.2} f(x) dx

can be  approximated with the midpoint rule, as follows:

6.7*(0.8 - 0.0) + 8.9*(1.6 - 0.8) + 6.9*(2.4-1.6) + 8.4*(3.2 - 2.4) = 24.72

(that is, all the intervals are 0.8 units length and f(x) is evaluated in the midpoint of the interval)

b)The error bound for the midpoint rule with <em>n</em> points is:

|Error| ≤ K*(b - a)^3/(24*n^2)

where <em>b</em> and are the limits of integration of the integral and K = max |f''(x)|

Given that -5 ≤ f''(x) ≤ 1, then K = 5.  Replacing into the equation:

|Error| ≤ 5*(3.2 - 0)^3/(24*4^2) = 0.4267

5 0
3 years ago
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