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Stells [14]
3 years ago
13

The length of a rectangle is four times the width. The perimeter of the rectangle is 45 inches. Write a system of

Mathematics
1 answer:
Yakvenalex [24]3 years ago
4 0

Answer:

81 square inches.

Step-by-step explanation:

Draw a diagram to represent what you know.

You don't know the values of the lengths so represent them algebraically.

You know the perimeter is 45 inches and that the perimeter is calculated by the sum of all of the sides of a shape.

You can rearrange to find the value of a side you've denoted as some unknown variable.

The area is given by the product of the sides. Express this algebraically and then input the value you found.

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A quarter is worth of a dollar. Haley needs to exchange dollar bills to get quarters to do her laundry in coin washers and dryer
Ira Lisetskai [31]

Answer:

52 quarters

Step-by-step explanation:

-We know that a quarter dollar is equivalent to $0.25

\$1=4 \ Quarters

-Given that Haley has $13, we multiply this amount by 4 since $1 has 4 quarters to obtain the number of quarters:

Q=13\times 4\\\\=52

Hence, Hayley will get 52 quarters.

8 0
3 years ago
What is -20 + 5p - 7z
Yuri [45]

Answer:

5p-z-20

Step-by-step explanation:

Hope this helps!

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3 years ago
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If f(x)=-2x^2+5x-3 and g(x) is the reflection of f(x) across the y-axis, then an equation of g is which of the following
Ymorist [56]

To reflect a function across the y-axis you have to change

x\mapsto -x

So, the function becomes

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4 years ago
I’m confused with this math problem, look at the picture please
Softa [21]
A cube has six sides so i divide 150 by 6 which is 25, so now we know wach side has an area of 25 square inches, square root 25 is 5. now we know each side length is 5 inches
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3 years ago
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Ends of a diameter: (-9, -16) and (3,0)
lbvjy [14]

Answer:

One example is the equation:

2x + 6 = 4x/2 + 12/2

To solve this, we need to transpose like terms to the same side.

2x - 4x/2 = 12/2 - 6

2x - 2x = 6 - 6

0 = 0

Since both sides are zero, it means that the equation has infinite number of solutions.

Step-by-step explanation:

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