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2 years ago

Pls help this is urgent

Mathematics

1 answer:

ozzi2 years ago

5 0

Answer:

Step-by-step explanation:

im passing this concept trust me the answer is 12

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Complete the multiplication: 2EA

Lady bird [3.3K]

In mathematics, a matrix (plural matrices) is a rectangular array of numbers, symbols, or expressions, arranged in rows and columns.

Given that

E = [ 1 2]

A = | 3 0|

| 2 -1 |

2EA = 2 [1 2] | 3 0|

| 2 -1 |

2EA = [ 14 -4]

8 0

4 years ago

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Please help fast this has to be done by today can you also leave how you solved the problem thank you I will give points.

blagie [28]

Answer:

Step-by-step explanation:

First find the perdendicular slope (flip and change sign) : m= - $\frac{1}{4}$

Then set up your equation using the given ordered paired to find your y-intersept: -1 = - $\frac{1}{4}$ (5) + b

Caluclate the product: -1 = - $\frac{5}{4}$ + b

Move the variable to the left-hand side and change its sign : -b - 1 = - $\frac{5}{4}$

Calculate the sum: -b = - $\frac{1}{4}$

Change the sign : b= $\frac{1}{4}$

Use the slope and y-intersept to creat the equation: y = - $\frac{1}{4}$ x + $\frac{1}{4}$

6 0

3 years ago

A lawn care company charges a $10 trip fee plus $0.15 per square foot of x square feet of lawn for fertilization. Which equation

aalyn [17]

That would be : y = 0.15x + 10

8 0

3 years ago

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Solve the system of equations by substitution. 3/8 x + 1/3 y =17/24 and x + 7y = 8

goblinko [34]

$\left \{ {{ \frac{3}{8}x+ \frac{1}{3}y = \frac{17}{14} } \atop {x+7y=8}} \right.$

To solve this system by substitution, first isolate x in the second equation.

$x+7y=8$
$x+7y-7y=8-7y$
$x=8-7y$

Now, plug this expression ( $8-7y$ ) for x in the top equation to solve for y.

$\frac{3}{8} (8-7y)+ \frac{1}{3} y= \frac{17}{14}$
$3- \frac{21}{8} y+ \frac{1}{3} y= \frac{17}{24}$
$72-63y+8y=17$
$72-55y=17$
$-55y=17-72$
$-55y=-55$
$y=1$

Now that you have y, plug it into the second equation and solve for x.

$x+7y=8$
$x+7(1)=8$
$x+7=8$
$x=1$

Last step is to plug your x- and y-values in to both equations to check your work.

$\frac{3}{8} (1)+ \frac{1}{3} y= \frac{17}{24}$

$\frac{3}{8} * \frac{3}{3} = \frac{9}{24} ; \frac{1}{3} * \frac{8}{8} = \frac{8}{24}$

$\frac{9}{24} + \frac{8}{24} = \frac{17}{24}$ <--True

$1+7(1)=8$
$1+7=8$ <--True

Answer:
$x=1 \\ y=1$

5 0

4 years ago

You randomly observe purchases at a candy store and record the weight of each bag of candy with 100 different customers. You fin

laila [671]

No, in this case the two components in question would be different. On one hand, investigating the sample proportion refers to the specific amount that is seen to be distributed on average. However, with sampling distribution, this refers more specifically to how much is distributed on a long-term basis.

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3 years ago

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