All categories

2 years ago

Can you please explain how you got the answer? Also plz tell me what the closed and open circle mean again..

Mathematics

2 answers:

ale4655 [162]2 years ago

8 0

Answer: A

Step-by-step explanation:

Open circle means that x does not equal that number. For example, the open circle on C is on 8, so that shows x is not equal to 8.

Closed circle means that x does equal that number. For example on A, there is a closed circle on 8, so x could equal 8.

First, we need to solve the equation.

Subtract 200 frim 1200 -> 125x ≥ 1000.
Divide 125 from 1000 to isolate the x -> x ≥ 8

So, that means x is bigger than or equal to 8.

maria [59]2 years ago

8 0

The answer should be A

You might be interested in

Where v is the final velocity (in m/s), u is the initial velocity (in m/s), a is the acceleration (in m/s²) and s is the distanc

Anna11 [10]

Answer:

The final velocity v is 21.74 m/s.

Step-by-step explanation:

Given:

$\textrm{initial velocity} = u = 9\ m/s\\\textrm{acceleration} = a = 7\ m/s^{2}\\\textrm{distance} = s = 28\ m$

To find:

$\textrm{final velocity} = v = ?$

Solution:

As we know the third equation of motion is represented as

$v^{2} = u^{2} + 2\times a\times s\\$

Substituting the values u, a and s in the above equation we get

$v^{2} = 9^{2} + 2\times 7\times 28\\ =81 + 392\\=473\\$

$v =\±\sqrt{473} \\v =\sqrt{473} \ \textrm{as acceleration is positive v is also positive}\\v = 21.74\ m/s$

7 0

3 years ago

Hector went shopping for a computer. At RST store, a computer originally prices at $955 had a price reduction of 40%. What was t

balandron [24]

Answer:

$573

Step-by-step explanation:

955* 0.60=573

10% of 955= 95.5

50% of 955=477.5

477.5=95.5=573

4 0

2 years ago

13 divided by $85.02

Salsk061 [2.6K]

The answer is 0.15290519877

6 0

3 years ago

Read 2 more answers

If these triangles are similar,name the missing angles, (25 points )

Ira Lisetskai [31]

Answer:

170

Step-by-step explanation:

4 0

2 years ago

What is the factored form of the expression 9x2 + 6x + 1?

DanielleElmas [232]

Answer:

(3x + 1)²

Step-by-step explanation:

Given

9x² + 6x + 1 ← is a perfect square of the form

(ax + b)² = a²x² + 2abx + b²

Compare like terms to find a and b

a²x² = 9x² ⇒ a² = 9 ⇒ a = $\sqrt{9}$ = 3

b² = 1 ⇒ b = $\sqrt{1}$ = 1

and 2ab = 2 × 3 × 1 = 6

Thus

9x² + 6x + 1 = (3x + 1)²

4 0

3 years ago