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3 years ago

What is the volume of a rectangular prism with a length of 2 inches, a width of an inch & is a quarter of an inch in height?

Mathematics

1 answer:

irina1246 [14]3 years ago

6 0

Answer:

Step-by-step explanation:

Right rectangular prism

Solve for volume

V=whl

l Length

Width

Height

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The circumference of the earth is about 40050 km. Which of the following is the closest approximation of the diameter? Use 3.14

prohojiy [21]

D is the answer
40050 divided by 3.14 is 12754.77707

7 0

3 years ago

Subtracting/adding mixed fractions

pishuonlain [190]

A)
= 3 2/4
= 3 1/2

b)
= 7 10/15 + 2 3/15
= 9 13/15

4 0

3 years ago

Use matrix inversion to solve the collection of systems of linear equations. HINT [See Example 4.] (a) −x − 4y + 2z = −10 x + 2y

omeli [17]

Answer:

Step-by-step explanation:

given is a system of linear equations in 3 variables as

$-x - 4y + 2z = −10\\ x + 2y - z = 11 \\x + y - z = 14$

This can be represented in matrix form as

AX=B Or

$\left[\begin{array}{ccc}-1&-4&2\\1&2&-1\\1&1&-1\end{array}\right] *\left[\begin{array}{ccc}x\\y\\z\end{array}\right] =\left[\begin{array}{ccc}-10\\11\\14\end{array}\right]$

So solution set

X would be $A^{-1} B$

|A|=-1(-1)+4(0)+2(-1)=--1

Cofactors of A are

-1 0 -1

-2 -1 -3

0 1 2

So inverse of A is

1 2 0

0 1 -1

1 3 -2

Solution set would be

x=12

y=-3

z=-5

8 0

3 years ago

Hi, I need the area to this problem i need the answer and to show my work no hackers please <br>

Harrizon [31]

28 yards is the answer

4 0

2 years ago

A student concludes that for all values of x,x^2+x+1 produces a prime number. Which value of x serves as counterexample to prove

Dafna11 [192]

Answer:

Step-by-step explanation:

Substitute the given values into x² + x + 1 and check if result is prime

x = - 4

(- 4)² - 4 + 1 = 16 - 4 + 1 = 13 ← prime

(- 2)² - 2 + 1 = 4 - 2 + 1 = 3 ← prime

(- 3)² - 3 + 1 = 9 - 3 + 1 = 7 ← prime

4² + 4 + 1 = 16 + 4 + 1 = 21 ← not prime

x = 4 serves as a counterexample to disprove this conclusion

5 0

2 years ago