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
Sonbull [250]
3 years ago
6

–x – 7 = 16 please help me

Mathematics
2 answers:
atroni [7]3 years ago
7 0
Move the -7 to the right, its sign will flip (do you know why?)
Negate both sides to change -x to x

-x = 16+7
-x = 23
x = -23
slavikrds [6]3 years ago
6 0
-x-7=16  |+7 , add to both sides
<span>-x=23  |*(-1)
x = -23

Answer:
-23
,,,,,,,,,,,,,,,,,,,,
-x-7=-(-23)-7=23-7=16</span>
You might be interested in
Is y= x2-1 a linear equation
Mekhanik [1.2K]
Yes, it is a linear equation.
4 0
3 years ago
224percent as a fraction or mixed number in simplest form
Murrr4er [49]

Answer:

2 6/25

Step-by-step explanation:

7 0
3 years ago
Ana tiene 14 años menos que Beto y ambas edades suman 56 años
allsm [11]
42 because 56 mines 14 equals 42
7 0
2 years ago
Keegan is priting and selling his original design on t-shirts. He has concluded that for x shirts, in thousands sold his total p
Damm [24]

Complete question is;

Keegan is printing and selling his original design on t-shirts. He has concluded that for x shirts, in thousands sold his total profits will be p(x) = -x³ + 4x² + x dollars, in thousands will be earned. How many t-shirts (rounded to the nearest whole number) should he print in order to make maximum profits? What will his profits rounded to the nearest whole dollar be if he prints that number of shirts?

Answer:

Number of t-shirts to make maximum profit = 2790 shirts

Maximum profit = $12,209

Step-by-step explanation:

From the question, we are given that the profit function is;

p(x) = -x³ + 4x² + x

For the maximum value of the profit function,

(dp/dx) = 0 and (d²p/dx²) < 0

Since, p(x) = -x³ + 4x² + x

Then,

(dp/dx) = -3x² + 8x + 1

at maximum point (dp/dx) = 0, thus;

-3x² + 8x + 1 = 0

Solving this using quadratic formula, the roots are;

x = -0.12 or 2.79

Also, (d²p/dx²) = -6x + 8

Now, let's put the roots of x into -6x + 8 and check for maximum value conditon;

at x = -0.12

(d²p/dx²) = -6(0.12) + 8 = 7.28 > 0

At x = 2.79

(d²p/dx²) = -6(2.79) + 8 = -8.74 < 0

Maximum has to be d²p/dx² < 0

So, the one that meets the condition is -8.74 < 0 at x = 2.79

Thus, the maximum of the profit function exists when the number of shirts, x = 2.79 (in thousands) = 2790

Now, the maximum profits that corresponds to this number of t-shirts of 2.79(in thousands) is obtained by putting 2.79 for x in the profit function;

So,

p(2.79) = -(2.79)³ + 4(2.79²) + 2.79

p(x) = -21.7176 + 31.1364 + 2.79

p(x) = 12.2088 (in thousand dollars) ≈ $12,209

6 0
3 years ago
Carlos earns $11.80 per hour working after school. He needs at least $410 to buy a refurbished cell phone. Write and solve an in
mart [117]
Like 3 hours I think to make it 410
6 0
3 years ago
Other questions:
  • A teacher let her students grade their math quizzes. •Jon wrote 13 out of 18 •Jim wrote .7 (repeated .7) •Joe reduced his to 5/6
    5·2 answers
  • What is the yintercept of the line given by the equation below?<br> y= 8x+7
    12·2 answers
  • How to solve 12x=-24
    5·2 answers
  • Y varies inversely as x and y=5 when x=3
    11·2 answers
  • Why do tornadoes kill people
    10·2 answers
  • 1/2(a+b)-(a-b)exponent2 when a=18 and b=14
    6·1 answer
  • £54,000 split ratio 1:3:8
    13·1 answer
  • A rectangular mat has a length of 12 in. and a width of 4 in. Drawn on the mat are three circles. Each circle has a radius of 2
    13·2 answers
  • Due in 10 minutes please help !! ASAP Erin buys 2 packs of potatoes costing £2 each, 3 packs of carrots for £3 per pack, and 3 t
    10·1 answer
  • Which ones are the distance formula and midpoint formula?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!