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jeka57 [31]
3 years ago
6

Help me how to do this please

Mathematics
1 answer:
Alborosie3 years ago
6 0
The answer is A. C=0 and + = 3
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The number of pens used varies directly with the number of pieces of paper needed. If 12 pens are used when 40 pieces of paper a
svetlana [45]

Answer:


Step-by-step explanation:

Y=KX


P=KX

12=K40

12/40=K

.3=K

P=.3X

P=.3(240)

P=72

6 0
3 years ago
Solving inequalities.<br><br> 1. 2x + 3 &lt; 9<br><br> 2. 4x - 5 &gt; 43
Rudiy27

Answer:

1.   x< 3

2.   x>12

have a great day :)

Step-by-step explanation:

4 0
3 years ago
2(10) + 2(x – 4) please simplify the expression
kolezko [41]

Answer:

3

Step-by-step explanation:

4 0
3 years ago
Given sets X, Y, Z, and U, find the set Xn(X - Y) using the listing method.
Aliun [14]

Answer:

{f, a}

Step-by-step explanation:

Given the sets:

X = {d, c, f, a}

Y = {d, e, c}

Z ={e, c, b, f, g}

U = {a, b, c, d, e, f, g}

To obtain the set X n (X - Y)

We first obtain :

(X - Y) :

The elements in X that are not in Y

(X - Y) = {f, a}

X n (X - Y) :

X = {d, c, f, a} intersection

(X - Y) = {f, a}

X n (X - Y) = elements in X and (X - Y)

X n (X - Y) = {f, a}

6 0
3 years ago
Please help
goldfiish [28.3K]

Answer:

270 coins

n + p

Step-by-step explanation:

Given that :

Number of nickels = 140

Number of pennies = 130

The total numbers coins had:

Number of Nickel + number of pennies

140 + 130 = 270 coins

If Number of nickels = n ; number of pennies = p

The total number of coins :

Number of Nickel + number of pennies

n + p

8 0
3 years ago
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