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jeyben [28]
3 years ago
9

Write and algebraic expression:

Mathematics
1 answer:
Triss [41]3 years ago
6 0

Answer:

21b

Step-by-step explanation:

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Which is the soluction of x/5 - 10 = 20?<br>A x = 2 <br>B x = 6<br>C x = 50<br>D x = 150
ololo11 [35]

x/5 - 10 = 20

add 10 to each side

x/5 = 30

multiply by 5

x = 150


7 0
3 years ago
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How do you write -x+3y=6 in slope intercept form?
Afina-wow [57]

Commenter jdoe said it right: solve for y and leave the rest on the other side.

-x + 3y = 6

3y = 6 + x add x on both sides

3y = x + 6 rearrange to get the x first

y = (x + 6) /3 divide both sides by 3

y = x/3 + 6/3 split the numerator (caution - never split denominators)

y = x/3 + 2 simplify 6/3


Thus the line in slope intercept form of y = mx + b is y = y = \frac{1}{3} x + 2


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3 years ago
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Determine whether these statements are true or false. a) ∅ ∈ {∅} b) ∅ ∈ {∅,{∅}} c) {∅} ∈ {∅} d) {∅} ∈ {{∅}} e) {∅} ⊂ {∅,{∅}} f )
Pavel [41]

Answer:

a) ∅ ∈ {∅} TRUE

b) ∅ ∈ {∅,{∅}}  TRUE

c) {∅} ∈ {∅}  FALSE

d) {∅} ∈ {{∅}} TRUE

e) {∅} ⊂ {∅,{∅}} TRUE

f ) {{∅}} ⊂ {∅,{∅}} TRUE

g) {{∅}} ⊂ {{∅},{∅}}FALSE

Step-by-step explanation:

To assess whether these statements are true or false, first observe the symbol:

"∈" means that element, as it is and as it is, belongs to the set. To belong to the set it must be within the symbols "{}"

On the other hand, the symbol "⊂" means "subset", that is, it is a subset that is included in the main set.

So:

c) is false because "{∅}" is not included in the set

g) is false because " {{∅}}" is not included in the set

7 0
3 years ago
Triangle PQR is dilated by a scale factor of 1/3 to form triangle P'Q'R'. Side RP
Bas_tet [7]

Answer:

1

Step-by-step explanation:

A third of 3=1

3/3=1

6 0
3 years ago
The daily high temperature of Elk Creek drops by 1.2°C every day. What is the net change in the daily high temperature after two
just olya [345]
I hope this helps you


if one day drops 1,2


one week 7 day drops 7×1,2=8,4


two week 14=2×7 day 2×8,4=16,8
6 0
3 years ago
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