Luis’ sample would be the most random, because not everyone in the cafeteria might check out books from the library, but since everyone Samantha surveyed was in the library already, most of the people she surveyed would be more consistent in their responses.
All you do is change signs write 2x minus 14 equals negative 10-14 equals four then you write 2x over two equals four over two then u write x equals negative two
Answer: A and B.
The scale factors can be found by writing the corresponding bases of the two rectangles as a ratio, which gives either 2:10 or 10:2. Ratios can also be written as fractions, so the scale factors then become either 1/5 or 5. The answers are A and B.
Answer:
(1, 2) is a solution to this system of equations
Step-by-step explanation:
Plug in (1, 2) into each equation
17x + y = 19
17(1) + 2 = 19
17 + 2 = 19
19 = 19 ----------->YES
8x + 5y = 18
8(1) + 5(2) = 18
8 + 10 = 18
18 = 18 ------------------->YES
Answer:
(1, 2) is a solution to this system of equations
Answer:
The area of the circle is 56.25π cm²
Step-by-step explanation:
- The formula of the circumference of a circle is C = 2πr, where r is the radius of the circle
- The formula of the area of a circle with radius r is A = πr²
<em>To find the area of the circle use the formula of the circumference to find its radius and then use the formula of the area to find its area</em>
∵ The circumference of a circle is 15π centimeters
∵ C = 2πr
- Equate 2πr by 15π
∴ 2πr = 15π
- Divide both sides by π
∴ 2 r = 15
- Divide both sides by 2
∴ r = 7.5 centimeters
Now let us use the rule of the area to find it
∵ A = πr²
∴ A = π(7.5)²
∴ A = 56.25π centimeters²
The area of the circle is 56.25π cm²
