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aleksklad [387]
3 years ago
14

Which statement is true for the equation 5n − 4 = 5n − 3?

Mathematics
2 answers:
kirill [66]3 years ago
6 0
Because 5n eliminated so this mean that are infinitely many solutions 
Andrew [12]3 years ago
5 0
It has one solution that is the answer
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Explain how you could mentally find 8×45 by using the distributive property
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8 x 45 = (8 * 40) + (8 * 5) ...now that can be done mentally
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If one line has a slope of -2/5 what would be the slope<br> of a line perpendicular to that line?
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Step-by-step explanation:

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The expression 5n+2 can be used to find the total cost in dollars of bowling where n us is the number of games bowled and 2 repr
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3 years ago
the area of a rectangle is 90 in2^. the ratio of the length to the width is 5:2. find the length and the width
-BARSIC- [3]

Length and width of rectangle is 15 inches and 6 inches respectively

<h3><u>Solution:</u></h3>

Given that area of a rectangle is 90 square inch

Ratio of length to the width = 5: 2.

Need to determine length and width of rectangle.  

As ratio of length to the width is 5 : 2

Lets assume length of rectangle = 5x inches and width of rectangle = 2x inches.

<em><u>The formula for area of rectangle is given as:</u></em>

\text { Area of rectangle }=\text { length of rectangle } \times \text { width of rectangle}

Substituting the given value of area of rectangle and assumed value of length and width of rectangle we get:

\begin{array}{l}{90=5 x \times 2 x} \\\\ {=>90=10 x^{2}}\end{array}

On solving the above expression for x we get

\begin{array}{l}{=>\frac{90}{10}=x^{2}} \\\\ {=>x^{2}=9} \\\\ {=>x=\sqrt{9}=3}\end{array}

\begin{array}{l}{\text { Length of rectangle }=5 \times x=5 \times 3=15 \text { inches }} \\\\ {\text { Width of rectangle }=2 \times} x=2 \times} 3=6 \text { inches }}\end{array}

Hence length and width of rectangle is 15 inches and 6 inches.

4 0
3 years ago
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