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fenix001 [56]
3 years ago
5

The graph below shows a line segment AB:

Mathematics
1 answer:
romanna [79]3 years ago
7 0
The answer of the slope is -½
use (y1-y2)/(x1-x2)
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The expression 3 x 7 - 4x8+2 is equivalent to which of the following?
ELEN [110]
Answer: b

explanation: only choice B equals -9 like the given equation.
8 0
3 years ago
Pls answer fast IMPORTANT HURRY!!!! Why did the chicken cross the road
erma4kov [3.2K]

Answer:

To get to the other side :o

Step-by-step explanation:

So first the chicken walks across the road and then gets to the other side mark brainliest please :)

5 0
3 years ago
Read 2 more answers
Find the vertex of y=-x^2-4x
Kay [80]
The vertex would be (-2,4)
3 0
3 years ago
A rectangular box without a lid is to be made from 48 m2 of cardboard. Find the maximum volume of such a box. SOLUTION We let x,
tatiyna

Answer:

The maximum volume of such box is 32m^3

V = x×y×z = 32 m^3

Step-by-step explanation:

Given;

Total surface area S = 48m^2

Volume of a rectangular box V = length×width×height

V = xyz ......1

Total surface area of a rectangular box without a lid is

S = xy + 2xz + 2yz = 48 .....2

To be able to maximize the volume, we need to reduce the number of variables.

Let assume the rectangular box has a square base,that means; length = width

x = y

Substituting y with x in equation 1 and 2;

V = x^2(z) ....3

x^2 + 4xz = 48 .....4

Making z the subject of formula in equation 4

4xz = 48 - x^2

z = (48 - x^2)/4x .......5

To be able to maximize V, we need to reduce the number of variables to 1, by substituting equation 5 into equation 3

V = x^2 × (48 - x^2)/4x

V = (48x - x^3)/4

differentiating V with respect to x;

V' = (48 - 3x^2)/4

At the maximum point V' = 0

V' = (48 - 3x^2)/4 = 0

Solving for x;

3x^2 = 48

x = √(48/3)

x = √(16)

x = 4

Since x = y

y = 4

From equation 5;

z = (48 - x^2)/4x

z = (48 - 4^2)/4(4)

z = 32/16

z = 2

The maximum volume can be derived by substituting x,y,z into equation 1;

V = xyz = 4×4×2 = 32 m^3

7 0
3 years ago
During a sale, a bookstore sold 250 books. At the end of the sale, the store has 75% of the original number of books. How many b
shutvik [7]
90 books would be left I believe I just took 250/9 since it would take 9 quarters to make $2.50 and since 75% was gone that would mean 25% is left so your answer is 90 unless it’s not but I believe it’s right.
5 0
3 years ago
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