All categories

2 years ago

I really need some help please

Mathematics

1 answer:

hichkok12 [17]2 years ago

8 0

Answer:

(1, - 1 ) and (5, - 3 )

Step-by-step explanation:

To determine which points are solutions of the inequality.

Substitute the x/y values into the left side of the inequality and compare with the right side.

(- 6, - 3)

- 3 + 12 = 9 > - 3 ← not a solution

(1, - 1 )

- 1 - 2 = - 3 ≤ -3 ← this is a solution

(5, - 3 )

- 3 - 10 = - 13 < - 3 ← this is a solution

(0, - 2 )

- 2 - 0 = - 2 > - 3 ← not a solution

(7, 12 )

12 - 14 = - 2 > - 3 ← not a solution

You might be interested in

Which ordered pair represents the y-intercept of the graph of the equation y = -3x - 9?

Mnenie [13.5K]

------------------------------------------------------------------------------------------
Equation
------------------------------------------------------------------------------------------
y = -3x - 9

------------------------------------------------------------------------------------------
Option 1
------------------------------------------------------------------------------------------
If I substitute x = -9, I should get y = 0

When x = -9
y = -3 (-9) - 9
= 18 (I did not get 0, wrong)

------------------------------------------------------------------------------------------
Option 2
------------------------------------------------------------------------------------------
If I substitute x = -3, I should get y = 0
y = -3(-3) - 9
y = 9 - 9
y = 0 (Yes, I got 0, correct)

------------------------------------------------------------------------------------------
Option 3
------------------------------------------------------------------------------------------
If I substitute x = 0, I should get y = -3
y = -3 (0) - 9
y = 0 - 9
y = -9 (I did not get -3, wrong)

------------------------------------------------------------------------------------------
Option 4
------------------------------------------------------------------------------------------
If I substitute x = 0, I should get y = -9
y = -3 (0) - 9
y = 0 - 9
y = -9 (Yes, I got -9, correct)

------------------------------------------------------------------------------------------
Answer: (-3, 0) and (0, 9) are ordered pairs of the equation (Answer B, D)
------------------------------------------------------------------------------------------

7 0

2 years ago

Please look at photo and help me I will mark who ever is first

maksim [4K]

Answer:

a = 9

Step-by-step explanation:

you can simplify the proportion to:

$\frac{a}{24} =\frac{3}{8}$

use cross- multiplication

8a = 72

a = 9

5 0

2 years ago

An ice cream shop sells cones at the volume of 94.2 cubic meters they want to double the volume of the cones without changing th

marin [14]

The volume of a cone is $V=\pi r^2\frac{h}3$ where r = radius and h = height. If the cone has a volume of 94.2 cm³ (I assume you didn't mean m³ because that would be ridiculously huge) and a height of 10 cm, we can plug these values into the formula to find the radius. Don't do any rounding.

$94.2 = \pi r^2\frac{10}3 \\ 282.6 = \pi r^2 *10 \\ 28.26 = \pi r^2 \\ 8.99543738355 = r^2 \\ 2.99923946752=r$

Now we know that's going to be the radius of our <em>new </em>cone as well since we're keeping the diameter the same. The volume is going to be double 94.2 which is 188.4. Let's solve for the height.

$188.4 = \pi (2.99923946752)^2\frac{h}3 \\ 188.4 = \pi(8.99543738355)\frac{h}3 \\ 188.4 = 28.26\frac{h}3 \\ 565.2 = 28.26h \\\\ \boxed{h = 20, r\approx 3}$

5 0

2 years ago

Whats is the square root of 2 multiply by one over the square root of 2

Ket [755]

When ANY number is multiplied by its own reciprocal, the product is ' 1 '.

8 0

2 years ago

Find all solutions to the equation with 0≤α≤2π. Give an exact answer if possible, otherwise give value(s) of α accurate to at le

Nady [450]

Please, find the solution atached in JPG format

6 0

2 years ago