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3 years ago

A rectangular flower bed is five feet longer than it is wide. its area is eighty-four square feet.

1 answer:

3 0

Lets say w is the width of the flower bed. We can make an equation to find the area.
The length of the of the flower bed is (w+5) and the width is w.
To find the area we need to multiply the length(w+5) by the width(w) and set it equal to 84,
(w+5)(w)=84
w^2 +5w=84
Using the quadratic equation you get the solutions of 7 and -12. Since 7 is positive it is our width. Our length is 7+5 or 12.

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777dan777 [17]

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3 0

3 years ago

Can anyone pls solve this.

OLga [1]

Answer:

3) $\frac{(25)^{3/2} * (243)^{3/5}}{(16)^{5/4}*(8)^{4/3}}$

=> $\frac{(5^2)^{3/2}*(3^5)^{3/5}}{(2^4)^{5/4}*(2^3)^{4/3}}$

=> $\frac{5^3*5^3}{2^5*2^4}$

=> $\frac{5^6}{2^9}$

4) $\frac{3-2\sqrt{2} }{3+2\sqrt{2} }$

Multiplying and dividing by conjugate $3-2\sqrt{2}$

=> $\frac{(3-2\sqrt{2})(3-2\sqrt{2}) }{(3+2\sqrt{2})(3-2\sqrt{2})}$

=> $\frac{9-6\sqrt{2}-6\sqrt{2} +8 }{9-8}$

=> $\frac{17-12\sqrt{2} }{1}$

=> $17-12\sqrt{2}$

Comparing it with $a+b\sqrt{2}$ , we get

a = 17, b = -12

7 0

3 years ago

3 8 of your income is spent on your monthly bills, 2 5 is spent on food and clothing and 1 10 goes on entertainment. You put the

s344n2d4d5 [400]

Answer:

Fraction of saving = 1/8

Step-by-step explanation:

Given:

Spent on bills = 3/8

Spend on food = 2/5

Spend on entertainment = 1/10

Find:

Fraction of saving

Computation:

Fraction of saving = 1 - Spent on bills - Spend on food - Spend on entertainment

Fraction of saving = 1 - 3/8 - 2/5 - 1/10

By taking LCM

Fraction of saving = [40 - 15 - 16 - 4]/40

Fraction of saving = [5]/40

Fraction of saving = 1/8

7 0

3 years ago

A number b times -16<br> is greater than 5

lord [1]

Write the Inequality

A number b times -16 is greater than 5.

A number b is a variable... b.

Times means multiply.

-16 is what you are multiplying b by.

Is greater than means the greater than symbol.

5 is what the past statements are greater than.

So this is the inequality.

-16b > 5

Solve the Inequality

You need to isolate b.

To do this, divide each side by -16. You do this because b is being multiplied by -16. You know that any number divided by that number equals 1, canceling the number.

-16b ÷ -16 = b

5 ÷ -16 = -5/16

So you get b > -5/16

So to make the inequality true, b must be more than -5/16.

Or as an inequality...

b > -5/16

8 0

3 years ago

This is urgent what is the answer to this hint: pemdas(45-5)÷5+6²

Artemon [7]

Answer:

$(45 - 5) \div 5 + {6}^{2} \\ 40 \div 5 + {6}^{2} \\ 8 + {6}^{2} \\ 8 + 36 \\ 44 \: answer$

3 0

3 years ago