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zalisa [80]
2 years ago
9

Please help i'm so stuck!

Mathematics
2 answers:
Svetlanka [38]2 years ago
8 0
It is 90cm squared also sorry if it’s wrong!
lord [1]2 years ago
4 0
The entire shape is 50cm squared. Multiply that by twelve, you get 600. Hope that’s right, and it helps!
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Rachel purchased a prepaid phone card for $30. Long distance calls cost 6 cents a minute using this card. Rachel used her card o
Amiraneli [1.4K]

Answer: her call lasted for 26 minutes.

Step-by-step explanation:

Let x represent the number of minutes for which her call lasted.

Rachel purchased a prepaid phone card for $30. Long distance calls cost 6 cents a minute using this card. Converting 6 cents to dollars, it becomes 6/100 = $0.06

This means that the cost of x minutes of long distance call is

0.06 × x = $0.06x.

If the remaining credit on her card is $28.44, it means that

0.06x + 28.44 = 30

0.06x = 30 - 28.44

0.06x = 1.56

x = 1.56/0.06

x = 26

8 0
3 years ago
Define a variable and write an inequality to model each situation. A light bulb can be no more than 75 watts to be safely used i
DaniilM [7]
Let the number of watts =w ‘no more than’ means less than or equal to, thus we will use that sign. The inequality can be written as: w<75
3 0
3 years ago
Which function below is the inverse of f(x) = x^2-9
USPshnik [31]
To find the inverse
replace f(x) with y
switch all x and y
solve for y
replace y with f⁻¹(x)

f(x)=x^2-9
y=x^2-9
x=y^2-9
x+9=y^2
sqrt both sides
\sqrt{x+9}
replace
f⁻¹(x)=\sqrt{x+9}

that is the inverse
5 0
3 years ago
What is the cost of 2 kilograms of flour if 3 kilograms cost $4.86 and the unit price for each packages of flour is the same
Pavlova-9 [17]
The answer is: $3.24.

\frac{4.86}{3}  =  \frac{x}{2}
\frac{9 .72}{3}  =  \frac{3x}{3}
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so ye...
8 0
3 years ago
Which graph represents (x,y)-pairs that make the equations y= 0.5x true?
tatyana61 [14]

Answer:

Option C

Step-by-step explanation:

To find the corresponding graph substitute values of x.

The graph is: $ y = \frac{1}{2} x $. Substitute $ x = 2 $.

We get: $ y = \frac{1}{2} (4) = 2 $. In the graphs only in Option C, y = 2 when x = 4.

3 0
3 years ago
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