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Naddik [55]
3 years ago
7

The length of a rectangle is 5 centimeters less than twice its width. Its area is 42 square centimeters. Find the dimensions of

the rectangle.
The width is
and the length is

​
Mathematics
1 answer:
Mila [183]3 years ago
7 0

Answer:

width=6cm, lenth is 7cm

Step-by-step explanation:

Let width of rectangle be x cm

Twice width=2x cm

length=2x-5 cm

Area of the rectangle= L× W =42cm²

(2x-5) × x =42

x(2x-5)=42

2x²-5x-42=0

solving the quadratic equation

x=6cm

width=6cm

length= (2×6)- 5 =7cm

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The standard form:

Ax+By=C

We have:

y=-\dfrac{1}{2}x+4      <em>multiply both sides by 2</em>

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\boxed{x+2y=8}

5 0
4 years ago
Craig has 36 ounces of flour left in one bag and 64 ounces of flour in another bag. Use the Baking Flour Equivalent table to fin
Ber [7]
So 16 = 3.6, 10 = 2.3 so 20 = 4.6 then add 16 + 20 to get 36 so 3.6 + 4.6 = 8.2
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3 0
4 years ago
NEED HELP WITH THIS PROBLEM. thanks
AlexFokin [52]
Rick has 1 1/3, or 4/3, pounds of sugar. 
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Now, for flour, we need to find 1/4 of 2/3, using the same process:
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He poured 1/6 pound of flour 
3 0
3 years ago
I just need these three questions fine, they should be easy, 7th grade level
muminat

1) A graph is linear when the line on a graph is a straight line with no curves.

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Alexxandr [17]
This is so simple it is midpoint theorem SAS
6 0
3 years ago
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