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3 years ago

Helppp, and when you answer please explain how you got it so i can hopefully understand it next time

Mathematics

2 answers:

Reptile [31]3 years ago

6 0

Answer:

d i think

Step-by-step explanation:

add or multiply

yan [13]3 years ago

5 0

I think it could be the letter D

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Find the value of n 1) 15/40 =n/3

stepladder [879]

Answer:

n = 1.125

Step-by-step explanation:

$\frac{15}{40} = \frac{n}{3}$

(Use Cross Product)

40n = 15 × 3

40n = 45

n = 1.125

7 0

3 years ago

Reparametrize the curve with respect to arc length measured from the point where t = 0 in the direction of increasing t. (Enter

Alex Ar [27]

Answer:

I would need more information to help you

Step-by-step explanation:

7 0

3 years ago

Solve the system of equations.

guajiro [1.7K]

Answer:

Option b. (x = 3, y = 20, z = -14)

Step-by-step explanation:

Given:

2x + 2y + 3z = 4

5x + 3y + 5z = 5

3x + 4y + 6z = 5

Solve using Cramer’s rule

∴ $\left[\begin{array}{ccc}2&2&3\\5&3&5\\3&4&6\end{array}\right] =\left[\begin{array}{ccc}4\\5\\5\end{array}\right]$

∴A = $\left[\begin{array}{ccc}2&2&3\\5&3&5\\3&4&6\end{array}\right] = -1$

Ax = $\left[\begin{array}{ccc}4&2&3\\5&3&5\\5&4&6\end{array}\right] = -3$

Ay = $\left[\begin{array}{ccc}2&4&3\\5&5&5\\3&5&6\end{array}\right] =-20\\$

Az = $\left[\begin{array}{ccc}2&2&4\\5&3&5\\3&4&5\end{array}\right] = 14$

∴ x = Ax/A = -3/-1 = 3

y = Ay/A = -20/-1 = 20

z = Az/A = 14/-1 = -14

So, the answer is option b. (x = 3, y = 20, z = -14)

4 0

3 years ago

the african bush elephant weighs between 4.4 tons and 7.7 tons.what are its least and greatest weights rounded to the nearest to

ruslelena [56]

The average would be from 4 tons to 8 tons.

4 0

4 years ago

W = 3x + 7y solve for y

mario62 [17]

Answer:

The value of the equation $y=\frac{W-3x}{7}$ .

Step-by-step explanation:

Consider the provided equation.

$W = 3x + 7y$

We need to solve the provided equation for y.

Subtract 3x from both side.

$W-3x= 3x-3x+ 7y$

$W-3x=7y$

Divide both sides by 7.

$\frac{7y}{7}=\frac{W-3x}{7}$

$y=\frac{W-3x}{7}$

Hence, the value of the equation is $y=\frac{W-3x}{7}$ .

8 0

3 years ago