b must always be greater than 0 since 12b-15 must always be greater than 21. You can simplify the ineqaulity to see things easier; 12b>36. Again, this ineqaulity can be simplified; b>3. A is the closest answer here, but there should be an open interval at 3 for A to be correct.

7 0

2 years ago

Why does cos(90°) = 0?

Anestetic [448]

Answer:

Step-by-step explanation:

The horizontal leg is 0, since there is no horizontal component of the triangle, so, the cosine is 0. Consider the angle itself and the unit circle. There is no horizontal component of the angle: The horizontal component of the angle is 0, so, the cosine of 90° is 0.

4 0

3 years ago

-12=24+b how do I solve this

garik1379 [7]

Answer:

b = -9

Step-by-step explanation:

-12 = 24 + 4b $\longmapsto\\$ Subtract 24 from both sides

-12 - 24 = 24 + 4b - 24

-36 = 4b $\longmapsto\\$ Divide all sides by 4

-36 ÷ 4 = 4b ÷ 4

-9 = b

-Chetan K

6 0

3 years ago

Read 2 more answers

Four students equally share 1\4 poud of peanuts.How of a pound of peanuts did each student get?

posledela

Answer:1/16

Step-by-step explanation:1/4= .25

Divide .25 by 4( for the four students) = .0625

.0625 is equivalent to 1/16

4 0

2 years ago