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3 years ago

2(a=4)=2a-8+4a solve for a

Mathematics

1 answer:

Naddik [55]3 years ago

8 0

Answer:

a = 0.

Step-by-step explanation:

2(a - 4) = 2a - 8 + 4a

2a - 8 = 2a - 8 + 4a

2a - 2a - 4a = -8 + 8

-4a = 0

a = 0.

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Bag A contains 3 white marbles and 2 red marbles. Bag B contains 6 white marbles and 3 red marbles. A person draws

mr_godi [17]

Answer:

$\frac{2}{5}$

Step-by-step explanation:

Bag A:

White = 3

Total = 3 White + 2 Red = 5

Prob (white marble from A) = $\frac{3}{5}$

Bag B:

White = 6

Total = 6 White + 3 Red = 9

Prob (white marble from B) = $\frac{6}{9}$

Prob (white from Bag A and white from Bag B)

= Prob (white marble from A) x Prob (white marble from B)

= $\frac{3}{5}$ x $\frac{6}{9}$

= $\frac{2}{5}$

8 0

3 years ago

Assume that T is a linear transformation. Find the standard matrix of T. T: R^3 right arrow R^2 , T(e 1) =(1,2), and T(e2 ) =( -

irina [24]

Answer:

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

Step-by-step explanation:

Given

$T:R^3->R^2$

$T(e_1) = (1,2)$

$T(e_2) = (-4,6)$

$T(e_3) = (2,-6)$

Required

Find the standard matrix

The standard matrix (A) is given by

$Ax = T(x)$

Where

$T(x) = [T(e_1)\ T(e_2)\ T(e_3)]\left[\begin{array}{c}x_1&x_2&x_3\\-&&x_n\end{array}\right]$

$Ax = T(x)$ becomes

$Ax = [T(e_1)\ T(e_2)\ T(e_3)]\left[\begin{array}{c}x_1&x_2&x_3\\-&&x_n\end{array}\right]$

The x on both sides cancel out; and, we're left with:

$A = [T(e_1)\ T(e_2)\ T(e_3)]$

Recall that:

$T(e_1) = (1,2)$

$T(e_2) = (-4,6)$

$T(e_3) = (2,-6)$

In matrix:

$(a,b)$ is represented as: $\left[\begin{array}{c}a\\b\end{array}\right]$

So:

$T(e_1) = (1,2) = \left[\begin{array}{c}1\\2\end{array}\right]$

$T(e_2) = (-4,6)=\left[\begin{array}{c}-4\\6\end{array}\right]$

$T(e_3) = (2,-6)=\left[\begin{array}{c}2\\-6\end{array}\right]$

Substitute the above expressions in $A = [T(e_1)\ T(e_2)\ T(e_3)]$

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

Hence, the standard of the matrix A is:

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

6 0

3 years ago

ASAP! GIVING BRAINLIEST! Please read the question THEN answer correctly! No guessing. Show your work or give an explaination.

iogann1982 [59]

Answer:

Step-by-step explanation:

-When the function moves to the right or left to the x axis, the number has to be in "( )"

-If it moves to the right, you SUBTRACT the amount of units

-It it moves to the left, you ADD the amount of units.

So in this case, it is moving to the right 12 units so it is $(x-12)^{2}$

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4 years ago

Read 2 more answers

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Ray Of Light [21]

Answer:

<h2>1.80 per pound of strawberries</h2><h2 />

Step-by-step explanation:

8.10 / 4.5 pounds = 1.80 per pound of strawberries

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4 years ago

Read 2 more answers

Fix Theater has a reduce ticket price for children who are at least 2 years old but less than 13 years old. The same price is gi

damaskus [11]

For the first one;
2≥x<13

And the second one;
65≥x

Hello this helps! :)

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4 years ago