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katovenus [111]

2 years ago

14

9. Simplify the expression: 6(-5n+7) Show work

1 answer:

pshichka [43]2 years ago

4 0

Consider the word phrase "2 apples". This is the same as "2 of apples". Mathematically you could write: 2×apples or even 2a.This is exactly the type of thing you have when you write:6(−5n+7)This is the same as: 6of (−5n+7)Lets write this out in full:(−5n+7)+(−5n+7)+(−5n+7)+(−5n+7)+(−5n+7) (−5n+7)Write this as: (−5n−5n−5n−5n−5n−5n)(7+7+7+7+7+7) As you can see, we have 6 of each Giving[−(6×5)×n]+[6×7]=−30n+42

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4y^2+7y-14<br>factor by grouping

Vedmedyk [2.9K]

Answer:

NoSolutions

Step-by-step explanation:

4y^2+7y-14

Sadly, this equation is not factorable by grouping

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3 years ago

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madreJ [45]

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3 years ago

A department store surveyed 428 shoppers, and the following information was obtained: 216 shoppers made a purchase, and 294 were

Maurinko [17]

Answer:

(a) 169

(b) 341

(c) 125

(d) 87

Step-by-step explanation:

Consider the Venn diagram below.

The total number of shoppers surveyed is, <em>N</em> = 428.

Number of shoppers who made a purchase, <em>n</em> (P) = 216

Number of shoppers who were satisfied with the service they received,

<em>n</em> (S) = 294

Number of shoppers who made a purchase but were not satisfied with the service, $n(S^{c}\cap P)$ = 47

(a)

The number of shoppers who made a purchase and were satisfied with the service = <em>n</em> (S ∩ P)

$n(S\cap P)=n(P)-n(S^{c}\cap P)\\=216-47\\=169$

(b)

The numbers of shoppers who made a purchase or were satisfied with the service = <em>n</em> (P ∪ S)

$n(P\cup S)=n(P)+n(S)-n(P\cap S)\\=n(P)+n(S)-n(S\cap P)\\=216+294-169\\=341$

(c)

The numbers of shoppers who were satisfied with the service but did not make a purchase = $n(S\cap P^{c})$

$n (S\cap P^{c} ) = n (S) - n (S \cap P)\\=294-169\\=125$

(d)

The number of shoppers who were not satisfied and did not make a purchase = $n(S^{c}\cap P^{c})$

$n(S^{c}\cap P^{c})=N-n(S\cup P)\\=N-n(P\cup S)\\=428-341\\=87$

6 0

3 years ago

4.8-2/5(w-6)<br> mathematic equation

mixer [17]

Answer:

$\frac{0.56}{w - 6}$

Step-by-step explanation:

1) Simplify 4.8 - 2 to 2.8.

$\frac{2.8}{5(w - 6)}$

2) Simplify.

$\frac{0.56}{w - 6}$

<u>Therefor</u><u>,</u><u> </u><u>the</u><u> </u><u>answer</u><u> </u><u>is</u><u> </u><u>0.56</u><u>/</u><u>w-6</u>.

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3 years ago

Find the mean, median and mode of the given data? 8, 10,11, 8, 14,18, 8, 10, 11, 8, 15

Inessa05 [86]

Answer:

it might be 18 ❤

Step-by-step explanation:

I'm pretty sure it is 18 let me know

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2 years ago