Mr.mathis owes $269 on a auto loan. write an integer to represent this situation

HELP QUICK! What is the value of the expression 9 − (1/2)exponent4 ⋅ 48?

fredd [130]

9-(.5)^(4)/48
= 9-0.0013020833
=8.9986

5 0

3 years ago

What is the discriminant of 9x2 + 2 = 10x?<br> a. -356<br> b.–172<br> c.28<br> d. 72

velikii [3]

<span>Discriminant is 28 (c) First get the equation into the form: Ax^2 + Bx + C = 0 (the quadratic equation).. By subtracting 10x both sides (to get it on the other side).. 9x^2 + 2 = 10x 9x^2 - 10x + 2 = 10x - 10x 9x^2 - 10x + 2 = 0 Now the discriminant is: b^2 - 4ac The quadratic equation is Ax^2 + Bx + C = 0 Here, A = 9, B = -10 and C = 2 (-10)^2 - 4 (9)(2) = 100 - 4 (18) = 100 - 72 = 28</span>

3 0

3 years ago

Read 2 more answers

Solve for x in the inequality below. 4x-8<5x+4

Eddi Din [679]

Answer:

Step-by-step explanation:

4x-8<5x+4

4x<5x+12

-x<12

flip sign

x > -12

3 0

3 years ago

Read 2 more answers

The newly elected Chancellor of the Galactic Federation is interested in the opinions of all citizens regarding economic conditi

mafiozo [28]

Answer: 3 step by step approach

Step-by-step explanation:

Since the Chancellor has to use a multi-stage sample to carry out the survey, he or she should carry it out step by step.

First, he or she should randomly sample some solar systems from the galaxy, then secondly sample planets within that solar system, and finally randomly sample countries within the selected planets

7 0

3 years ago

Two standardized tests, a and b, use very different scales of scores. the formula upper a equals 40 times upper b plus 50a=40×

Romashka [77]

Answer:

(a) The mean score of test A is 1210.

(b) The mean score of test A is 1210.

(c) The standard deviation of test A is 80.

(d) The value of Q₃ for test A is 1170.

(e) The value of median for test A is 1090.

(f) The value of IQR for test A is 290.

Step-by-step explanation:

The relation between two standardized tests <em>A</em> and <em>B</em> is:

$50A=40B+50$

The equation above approximates the relationship between scores on the two tests.

The summary statistics for test B are as follows:

Lowest Score = 21

Mean score = 29

Standard deviation = 2

Q₃ = 28

Median = 26

IQR = 6

(a)

Compute the lowest score on test A as follows:

$A=40B+50\\=(40\times21)+50\\=890$

Thus, the lowest score on test A is 890.

(b)

Compute the mean score of test A as follows:

<h2> $A=40B+50\\=(40\times29)+50\\=1210$ </h2>

Thus, the mean score of test A is 1210.

(c)

Compute the mean score standard deviation of test A as follows:

<h2> $A=40B+50\\=(40\times2)\\=80$ </h2>

Thus, the standard deviation of test A is 80.

(d)

Compute the value of Q₃ for test A as follows:

$A=40B+50\\=(40\times28)+50\\=1170$

Thus, the value of Q₃ for test A is 1170.

(e)

Compute the value of median for test A as follows:

$A=40B+50\\=(40\times26)+50\\=1090$

Thus, the value of median for test A is 1090.

(f)

Compute the value of IQR for test A as follows:

$A=40B+50\\=(40\times6)+50\\=290$

Thus, the value of IQR for test A is 290.

6 0

3 years ago