X² + 6 = 87
<u> - 6 - 6</u>
x² = 81
x = <u>+</u>9
x = 9 U x = -9
The solution set is equal to D. {<u>+</u>9}.
Answer:
6600 yrds
Step-by-step explanation:
sorry if its wrong
The first step is figuring out the length of the field. To do this, let's work backwards.
We are given the width (11m) and the perimeter (68m). We know that perimeter is measured with the formula P = 2W + 2L or W+W+L+L. All we have to do is plug in our width, 11(2) which is 22, and subtract that from the perimeter:
68 - 22 = 46 < this is the amount of both lengths combined, but in order to find the area, we only need one side. So, divide 46 by 2, and you'll get 23.
Now the area of a rectangle is found by using A = lw. So plug in your numbers and multiply 23 (length) and 11 (width). You should get 253.
Answer: 253m/D.
Answer:
4080 ft
Step-by-step explanation:
34 yards of ribbon are used to prepare 8 teddy bears. The yards of ribbon used to prepare 320 teddy bears are:
320 teddy bear × (34 yard/8 teddy bear) = 1360 yard
1 yard is equal to 3 feet. The feet corresponding to 1360 yards is:
1360 yard × (3 feet/1 yard) = 4080 feet
with the pythagorean theorem
using the formula of the quadratic equation
the length cannot be negative, therefore x=7
length of the shorter leg is: 7ft
length of the longer leg is: 3+3(7)= 24ft
length of the hypotenuse is: 4+3(7)= 25ft
