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Sauron [17]
2 years ago
5

Paolo is using number lines to find the value of the expression

Mathematics
1 answer:
kvv77 [185]2 years ago
7 0

\frac{1}{6} +  \frac{2}{3} + (-1  \frac{1}{3} )

\frac{1}{6}  +  \frac{4}{6}  + ( -  \frac{4}{3} )

\frac{5}{6}  -  \frac{8}{6}

\frac{ - 3}{6}

-  \frac{1}{2}

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find an expression for the area of a rectangle of sides 2x+3 and x-1 given that the perimeter is 28cm what is the value of x
Ierofanga [76]

Answer:

4cm

Step-by-step explanation:

Given data

L=(2x+3)

W=(x-1)

P=28cm

A= L*W

A= (2x+3)*(x-1)

open bracket

A= 2x^2-2x+3x-3

collect like terms

A= 2x^2+x-3

P= 2L+2W

P= 2*(2x+3)+2(x-1)

P= 4x+6+2x-2

collect like terms

P= 6x-4

but p= 28

28= 6x-4

28-4= 6x

24= 6x

x= 24/6

x= 4cm

Hence x= 4cm

4 0
2 years ago
Test question what would the sign be when multiplying a positive and negative number
Otrada [13]
The sign would be negative
6 0
2 years ago
Libby needs to cut pieces of oak molding that are 3/4 yard long. She has 2 yards of oak molding. How many pieces can she cut? Ho
jek_recluse [69]

Answer: She can make two 3/4 yards long of oak molding. She will have half of the second one left over.

Step-by-step explanation:

3 0
3 years ago
X+y=11 and 22X+15y=228
Lady_Fox [76]
X+y=11
22x+15y=228

y=11-x
22x+15y=228
22x+15(11-x)=228
22x+165-15x=228
7x+165=228
7x=63
x=9

9+y=11
y=2

The solution to the system of equations is (9,2)
6 0
3 years ago
One number is six times as large as another. The sum of their reciprocal is 7. What are the numbers
RideAnS [48]
X=6y

sum of their reciprocals
(1/x)+(1/y)=7
x=6y
1/6y+1/y=7
1/6y+6/6y=7
7/6y=7
times both sides by 6y
7=42y
divide both sides by 42
1/6=y

x=6y
x=6(1/6)
x=6/6
x=1

the numbers are 1 and 1/6
5 0
3 years ago
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