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
artcher [175]
3 years ago
9

What Is-0.75-(-2/5)+0.4+(-3/4)

Mathematics
1 answer:
emmasim [6.3K]3 years ago
8 0
-0.7 hope this helps 
You might be interested in
Translate eight subtracted from the product of fifteen and a number into a variable expression
Sophie [7]
If the number is taken as x,

15x - 8
7 0
3 years ago
Find a point on the curve x^3+y^3=11xy other than the origin at which the tangent line is horizontal.
attashe74 [19]

Compute the derivative dy/dx using the power, product, and chain rules. Given

x³ + y³ = 11xy

differentiate both sides with respect to x to get

3x² + 3y² dy/dx = 11y + 11x dy/dx

Solve for dy/dx :

(3y² - 11x) dy/dx = 11y - 3x²

dy/dx = (11y - 3x²)/(3y² - 11x)

The tangent line to the curve is horizontal when the slope dy/dx = 0; this happens when

11y - 3x² = 0

or

y = 3/11 x²

(provided that 3y² - 11x ≠ 0)

Substitute y into into the original equation:

x³ + (3/11 x²)³ = 11x (3/11 x²)

x³ + (3/11)³ x⁶ = 3x³

(3/11)³ x⁶ - 2x³ = 0

x³ ((3/11)³ x³ - 2) = 0

One (actually three) of the solutions is x = 0, which corresponds to the origin (0,0). This leaves us with

(3/11)³ x³ - 2 = 0

(3/11 x)³ - 2 = 0

(3/11 x)³ = 2

3/11 x = ³√2

x = (11•³√2)/3

Solving for y gives

y = 3/11 x²

y = 3/11 ((11•³√2)/3)²

y = (11•³√4)/3

So the only other point where the tangent line is horizontal is ((11•³√2)/3, (11•³√4)/3).

3 0
2 years ago
Ariana bought 7 muffins she paid 13.02 how much did each muffin cost
nalin [4]

Answer:

About $1.86

Step-by-step explanation:

It could be rounded to $1.90.

5 0
3 years ago
Read 2 more answers
What is the volume of this aquarium 24 in 8 in 12 in
mote1985 [20]
2304 cubic inches. You multiply the length, width, and base
4 0
3 years ago
Read 2 more answers
Someone help me pls
stepladder [879]

Answer:

1 rubber cube dude give since we'll

6 0
2 years ago
Other questions:
  • A billboard on level ground is supported by a brace as shown in the accompanying diagram the measure of angle is 15° greater tha
    15·1 answer
  • Clear Lake is 1 1/2 mile long and 1/2 mile wide. how much longer than wide is clear lake
    7·2 answers
  • 22. Find the average of the following numbers: 15, 12, 14, 11, 13. Which
    10·1 answer
  • Find an equation of the line containing the given points.(3,-7) (0,2)
    5·1 answer
  • Given: △ABC, m∠B=90°<br> AB=12, BC=16, <br> BK⊥AC<br> Find: AC and BK.<br><br><br> PLS HELP ME!!!!!!
    12·1 answer
  • Kyle is going to the County Fair with his friends. It
    15·1 answer
  • A straw is placed inside a rectangular box that is 10 inches by 8 inches by 2 inches, as
    9·1 answer
  • What is the product of the binomials (3x+1) (2x-4)
    10·2 answers
  • Help me out here please. I really need help here.
    9·1 answer
  • Round 4.9 to the nearest whole number<br>​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!