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
Rudiy27
3 years ago
14

Please help, and please give me an explanation.

Mathematics
1 answer:
vichka [17]3 years ago
7 0
I Believe that it is not the last 3 Answers.
You might be interested in
A linear function is parallel to the line y= 4x + 8 and also goes through the point (2,15).What is the linear equation for this
horrorfan [7]

When written in the y=mx+q form, the slope of a line is given by the coefficient m. Moreover, two lines are parallel if the have the same slope.


Now, the slope of the known line is 4, so our line's slope will be four as well.


In general, when you know the slope m of a line and one of its points (x_0,y_0), the equation of the line can be derived from the following formula:


y-y_0 = m(x-x_0)


Which in your case becomes


y-15 = 4(x-2)


Expand the right hand side and solve for y:


y = 4x+7

3 0
3 years ago
An open top rectangular box is to be made from a rectangular piece of metal that is 3cm wide and 8cm long by cutting a square fr
Tanzania [10]

Answer:

x  = 0.67 cm

Step-by-step explanation:

Let call  " x " the length of the side of the square to cut from each corner

then the sides of the future box would be

L = 8 - 2x       and   D = 3 - 2x

The volume of the box is:

V = L*D*x

And such volume as function of x is

V(x)  = ( 8 - 2x ) * ( 3 - 2x ) * x     ⇒  V(x)  = ( 24 - 16x - 6x + 4x²) * x

V(x)  =  4x³ - 22x² + 24x

Taking derivatives on both sides of the equation we get:

V´(x) = 12x² - 44x + 24

Then    V´(x) = 0       ⇒   12x² - 44x + 24 = 0    ⇒  3x² -  11x + 6 = 0

We got a second degree equation solving for x

x₁,₂  = [11 ± √ 121 - 72 ] / 6

x₁  = ( 11 + 7 ) / 6         x₁  =  3   we dismiss this solution since according to problem statement  one side would become negative

Then

x₂  =  (  11 - 7 ) / 6    ⇒    x₂  =  4/6      ⇒   x₂  =  0.67 cm

As the second drivative is smaller than 0 then there is a maximun in that point

V´´(x)  = 12x - 44  < 0

Sides of the box

L = 8 - 2x    ⇒  L = 8 - 2*(0.67)   ⇒  L  = 8  - 1.34    ⇒  L = 6.66 cm

D = 3 - 2x   ⇒   D = 3 - 2* (0.67) ⇒  D = 3 - 1.34    ⇒   D = 1.66 cm

Heigh  =  x  = 0.67 cm

V(max) = 6.66*1.66*0.67

V(max) = 7.41 cm³

5 0
3 years ago
Find the product and represent in the simplest form of 12/17 × 3/8​
laila [671]

Answer:

9/34

Step-by-step explanation:

I find when multiplying fractions, its easier to separate them into the numerator and denominator.

So we have 12 x 3, and 17 x 8

12 x 3 = 36

17 x 8 = 136

So we have 36/136

Simplified, that is 9/34

3 0
1 year ago
Read 2 more answers
The area of a square depends on the length of its sides. Answer the questions below
olga nikolaevna [1]

Answer:

Where are the questions?

Step-by-step explanation:

6 0
3 years ago
I will give u brainliest
Ket [755]

Answer 7.3

Step-by-step explanation:

find the sqrt root for 54 u can also use  a calculator

7 0
3 years ago
Read 2 more answers
Other questions:
  • Can two lines be drawn from a point not on a line that will meet the line at a right angle? at a 45° angle? explain each answer.
    5·1 answer
  • In a college student poll, it is of interest to estimate the proportion p of students in favor of changing from a quarter-system
    9·1 answer
  • The distance to school and back is 5.28 miles. How far is it one way?
    11·2 answers
  • How to write 0.624 in expanded form
    7·1 answer
  • FeCl3 + O2  Fe2O3 + Cl2 BALANCE the equation
    11·1 answer
  • A development economist is studying income growth in a rural area of a developing country. The last census of the population of
    9·1 answer
  • It costs £8 to go on a bowling trip.
    7·1 answer
  • A<br> 100 cm²<br> b<br> 9 cm²<br> c<br> 225 cm²<br> d<br> 28.26 cm²
    12·1 answer
  • PLEASE HELP ME OUT CCCCCCCCCCCCCCCCCC;
    7·1 answer
  • Answer the question below from I ready
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!