All categories

3 years ago

Brainliest 100 points help Show your work and graph the conjunction: -3<x+2 less than or equal to 7

Physics

2 answers:

Soloha48 [4]3 years ago

7 0

Answer:

-3 < x + 2 ≤ 7

we are going to subtract both sides by 2 to get rid of it from the middle Subtract 2 from both sides :

-3 < x + 2

-3 (-2) < x + 2 (-2)

-5 < x

and now for the other equation we do the same thing :

x + 2 ≤ 7

x + 2 (-2) ≤ 7 (-2)

x ≤ 5

-5 < x ≤ 5 this is what your answer is :D

~batmans wife dun dun dun.....

saul85 [17]3 years ago

6 0

-3 < x + 2 ≤ 7

Graph. Isolate the x. Subtract 2 from both sides (for both equations):

-3 < x + 2

-3 (-2) < x + 2 (-2)

-5 < x

x + 2 ≤ 7

x + 2 (-2) ≤ 7 (-2)

x ≤ 5

Note that it looks like:

-5 < x ≤ 5

Graph. You're graph will look like the attached picture

hope this helps

You might be interested in

A car with a mass of 1900 kg has a force of 475 N. What is the acceleration of the car?

velikii [3]

Answer:

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

$a = \frac{f}{m} \\$

f is the force

m is the mass

From the question we have

$a = \frac{475}{1900} = 0.25 \\$

We have the final answer as

Hope this helps you

7 0

2 years ago

Two blocks are arranged at the ends of a massless cord over a frictionless massless pulley as shown in the figure. Assume the sy

ANEK [815]

Answer:

The coefficient of friction is <u>0.242.</u>

Explanation:

Given

Mass on the table is, $m_1 = 4.1$ kg

Hanging mass is, $m_2 = 2.7$ kg

Displacement of the masses is, $s = 0.355$ m

Initial velocity of the masses is, $u=0$ m/s

Final velocity of the masses is, $v = 1.32$ m/s

Acceleration by gravity is $g = 9.8$ m/s².

The acceleration of the system is calculated using equation of motion and is given as:

$a=\frac{v^2-u^2}{2s}\\a=\frac{1.32^2-0}{2\times 0.355}=2.46\ m/s^2$

Therefore, $a = 2.46$ m/s²

Applying Newton's second law on the hanging mass, we get:

$m_2\times g-T = m_2\times a\\T = m_2\times (g - a)\\T=2.7\times(9.8 - 2.46)\\T = 19.82\ N$

Now, applying Newton's second law on the mass on table, we get:

$T - F_f = m_1\times a\\F_f =T - m_1\times a\\F_f = 19.82 -4.1\times 2.46\\F_f = 9.73\ N$

The normal force of the table on the mass is given as:

$N=m_1\times g=4.1\times 9.8=40.18\ N$

The coefficient of friction is the ratio of the frictional force and the normal force and is given as:

$\mu=\frac{F_f}{N}=\frac{9.73}{40.18}=0.242$

Therefore, the coefficient of friction between the mass on the table and the table is 0.242.

7 0

4 years ago

A pole-vaulter is nearly motionless as he clears the bar, set 4.2 m above the ground. He then falls onto a thick pad. The top of

Mandarinka [93]

initial height of the Pole - vaulter = 4.2 m

now when he reached the top of the pad his height is 80 cm

so the total displacement of the person will be = 4.2 - 0.8 = 3.4 m

now we can use kinematics to find the speed just before he touch the pad

$v_f^2 - v_i^2 = 2 a d$

$v_f^2 - 0 = 2*9.8*3.4$

$v_f^2 = 66.64$

$v_f = 8.16 m/s$

now when he compressed on pad the distance after which he will stop is 50 cm

so now again using kinematics we can say

$v_f^2 - v_i^2 = 2 a d$

$0 - 8.16^2 = 2*a*0.50$

$a = -66.64 m/s^2$

so it is acceleration by -66.64 m/s^2

5 0

4 years ago

A laser printer uses a laser beam to “burn” images onto paper.<br><br> a)True<br> b)False

anastassius [24]

The answer is false because the laser doest burn the images onto the paper.

5 0

3 years ago

Read 2 more answers

How is velocity different from speed?

enyata [817]

Velocity, unlike speed, includes a direction.

Velocity is a vector quantity which is defined by magnitude and direction.

Speed is a scalar quantity. It is the rate at which an object moves regardless of which direction.

5 0

3 years ago

Read 2 more answers