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timurjin [86]
3 years ago
11

HELP PLEASEEEEEE!!!!!!

Mathematics
1 answer:
jeka943 years ago
7 0

Answer:

x <u>></u> -6

Step-by-step explanation:

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Suppose we want to choose colors, without replacement, from the colors red, blue, green, and purple.
DerKrebs [107]

The number of ways when the choice is not relevant is 4

<h3>How to determine the number of ways?</h3>

The number of colors are:

Colors, n = 4

The color to choose are:

r = 3

<u>Relevant choice</u>

When the choice is relevant, we have:

Ways = ^nP_r

This gives

Ways = ^4P_3

Evaluate

Ways = 24

Hence, the number of ways when the choice is relevant is 24

<u>Not relevant choice</u>

When the choice is not relevant, we have:

Ways = ^nC_r

This gives

Ways = ^4C_3

Evaluate

Ways = 4

Hence, the number of ways when the choice is not relevant is 4

Read more about combination at:

brainly.com/question/11732255

#SPJ1

4 0
2 years ago
Solving quadratic equations using square roots <br><br> (2/5)(x+3)^2=5
Slav-nsk [51]

x =  - 3 +  \frac{5 \sqrt{2} }{2} \\   - 3 -  \frac{5 \sqrt{2} }{2}
x = .5355339 \\  - 6.5355339

I think that's what your looking for
6 0
3 years ago
To investigate the relationship between amount of sales y (in thousands of dollars) and the amount x (in hundreds of dollars) sp
riadik2000 [5.3K]

Answer:

(A) For each additional hundred dollars spent on advertising, sales are predicted to increase by $2,380.

Step-by-step explanation:

Regression isa statistical equation, denoting relationship between independent (causal) variable(s) & dependent (effected) variable.

y = a <u>+</u> bx

where y = dependent variable, x = dependent variable, a (intercept) = autonomous value of y, b (slope) = change in y due to change in x

Regression equation of independent variable (x) as advertising expenditure & dependent variable (y) sales : y = 24.45 + 2.38x

Sales are in thousands of dollars, advertising expenditure is in hundreds of dollars. So, the interpretations are :

  • Intercept interpretation : When there is zero advertising expenditure, sales are 24.45 thousands i.e $24450
  • Slope Interpretation :<u> When advertisement expenditure change (rise) by 1 hundred, sales change (rise) by 2.38 thousand i.e</u><u> </u><u>$2380</u>
7 0
3 years ago
In which equation x is = to 180<br> (A) x/49=7 (B) x/12-7 =13 (C) x/3-15=45
topjm [15]
The answers is C. because when you do 180/3-15 you get 45 as the answer.
7 0
3 years ago
Which expressions have a quotient of -8? Select all that apply.
Svet_ta [14]

Answer:

A

Step-by-step explanation:

All of the others equal -8

I hope this helps

Please give a thanks (and brainliest trying to level up)

if wrong pls leave a comment

7 0
3 years ago
Read 2 more answers
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