1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
damaskus [11]
2 years ago
15

Solve this quadratic inequalitie with detailed full explanation

Mathematics
2 answers:
ANTONII [103]2 years ago
7 0

x^2\leq16\\x\leq 4 \wedge x\geq -4\\x\in\langle-4,4\rangle

different approach:

x^2\leq16\\x^2-16\leq0\\(x-4)(x+4)\leq0

see attachment

x\in\langle-4,4\rangle

Blizzard [7]2 years ago
5 0

~~~~~~x^2 \leq 16\\\\\implies -\sqrt{16} \leq x\leq  \sqrt{16}\\\\\implies -4\leq x \leq 4\\\\\text{Interval notation:}~ [-4,4]

You might be interested in
Find the price-demand equation for a particular brand television when the demand is 20 TVs per week at $150 per TV, given that t
Alina [70]

Answer:

~150=50e^{-0.01()20}

~p(100)=\$127.7

Step-by-step explanation:

From the question we are told that:

Price of 20TVs per week P_{20}=\$150

Marginal price-demand function p'(x)=-0.5e-0.01x

Generally the The Marginal price function is mathematically given by

  p'(x)=-0.5e^{-0.01x}  

  p(x)=\int-0.5e^{-0.01x}  

  p(x)=50e^{-0.001x}+C  

Therefore the equation when the demand is 20 TVs per week at $150 per TV

150=50e^{-0.01()20}

Giving

p(x)=50e^{-0.01x}+150-50e^{-0.01(20)}

Therefore the Price when the demand is 100 TVs per week

p(100)=50e^{-0.01(100)}+150-50e^{-0.01(20)}

p(100)=\$127.7

7 0
2 years ago
Helpppppppppppppppp ill mark you brainlist write in y=mx+b form
Sholpan [36]

Answer:

The equation of the line in slope-intercept form is:

  • y\:=\:\frac{-10}{7}x-\frac{45}{7}

Step-by-step explanation:

Given the points

  • (-8, 5)
  • (-1, -5)

Finding the slope

\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}

\left(x_1,\:y_1\right)=\left(-8,\:5\right),\:\left(x_2,\:y_2\right)=\left(-1,\:-5\right)

m=\frac{-5-5}{-1-\left(-8\right)}

m=-\frac{10}{7}

We know the slope-intercept form of the line equation is

y = mx+b

where m is the slope and b is the y-intercept

substituting m = -10/7 and (-8, 5) in the slope-intercept form to determine the y-intercept

5\:=\:\frac{-10}{7}\left(-8\right)+b

\frac{80}{7}+b=5

b=-\frac{45}{7}

now substituting m = -10/7 and b = -45/7 in the slope-intercept form

y = mx+b

y\:=\:\frac{-10}{7}x+\left(-\frac{45}{7}\right)

y\:=\:\frac{-10}{7}x-\frac{45}{7}

Thus, the equation of the line in slope-intercept form is:

  • y\:=\:\frac{-10}{7}x-\frac{45}{7}
7 0
3 years ago
1+1 pls, help, I will give you brainliest answer!!! just hellllllp!!!!!​
eimsori [14]

Answer:

2!!!

Step-by-step explanation:

PLS GIVE BRAINLIEST

5 0
3 years ago
Read 2 more answers
Turn 3x+8y=14.50 in a y equals equation
zlopas [31]

Answer:

y= (-3x +14.50) / 8

Step-by-step explanation:

Isolate the 8y

Subtract 3x from both sides

8y = -3x + 14.50

Then, isolate the left to only y

y= (-3x +14.50) / 8

7 0
3 years ago
You can work at most 20 hours next week. You need to earn at least $130 to cover your weekly expenses. Your pizza delivery job p
never [62]
P = # of hrs at pizza delivery job, c = # of hrs at car wash job
p + c < = 20 (thats less then or equal)
10.50p + 7.50c > = 130 (thats greater then or equal)
8 0
3 years ago
Other questions:
  • Cari owns a horse farm and a horse trailer than can transport up to 8000 pounds of livestock and tack. She travels with 5 horses
    8·1 answer
  • 10 POINTS<br> Find the surface area of the regular pyramid. Round to the nearest tenth if necessary.
    12·2 answers
  • Find an equation of the line containing the centers of the two circles whose equations are given below.
    5·1 answer
  • (a+b)2 ;a=1/2 and b=2
    11·2 answers
  • How much is it to buy 10 meters of fleece when the rate is $1.60/ft of fabric
    13·1 answer
  • Please help this is do tommorow
    11·1 answer
  • Describe the type of correlation indicated by each correlation coefficient r=0.875
    10·1 answer
  • Read each phrase and write ab algebraic expression in the blue box.​
    8·1 answer
  • What is the least common multiple of 5 and 8?​
    11·1 answer
  • Please please help me with geometry
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!