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3 years ago

36^ - 1/2 Wich is equivalent? A -18 B -6 C- 1/18 D- 1/6

Mathematics

2 answers:

Likurg_2 [28]3 years ago

6 0

Answer:

1/6

Step-by-step explanation:

STatiana [176]3 years ago

3 0

Answer:

3rd

Step-by-step explanation:

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Which number completes this number sentence? [ ? ] > -6 A.-8 B.-7 C.-6 D.0

Xelga [282]

Answer:

It is 0

Step-by-step explanation:

Unlike the positive side of the number line which increases its value as it goes up in numbers, the negative side of a number line increases its value as it goes goes down in numbers as the more closer a negative number is to the positive side of infinity, the greater value it has. In this instance, zero is the greater number than -6 and all other negative numbers.

8 0

3 years ago

What is the inverse matrix that can be used to solve this systems of equations

Gala2k [10]

Step-by-step explanation:

The answer is OPTION C

Find the Inverse of a 3x3 Matrix.

First

Find the Determinant of A(The coefficients of e

Proceed towards finding the CO FACTOR of the 3x3 Matrix.

+. - +

A= [ 1 -1 -1 ]

[ -1 2 3 ]

[ 1 1 4 ]

The determinant of this is 1.

Find the co factor

| 2 3 | |-1 3 | |-1 2 |

| 1. 4. | |1 4 | |1. 1 |

|-1. -1 | |1 -1 | |1 -1

| 1. 4 | |1. 4| |1 1|

|-1. -1 | |1 -1 | |1. -1

|2. 3| |-1. 3| |-1 2|

After Evaluating The Determinant of each 2x 2 Matrix

You'll have

[ 5 7 -3]

[3 5 -2 ]

[-1 -2 1]

Reflect this along the diagonal( Keep 5,5 -2)

Then switching positions of other value

No need of Multiplying by the determinant because its value is 1 from calculation.

After this

Our Inverse Matrix Would be

[ 5 3 -1 ]

[7 5 -2 ]

[ -3 -2 1]

THIS IS OUR INVERSE.

OPTION C

5 0

2 years ago

X-5y-z=-20 -2x-y-6z=25 -x-4y-z=-15 Solve by elimination

Tju [1.3M]

Answer:

x = 0

y = 5

z = -5.

Step-by-step explanation:

X-5y-z=-20

-2x-y-6z=25

-x-4y-z=-15

Add equation 1 and 3:

-9y - 2z = -35 .......... A

Multiply the first equation by 2:

2x - 10y - 2z = -40

Now add this to equation 2:

-11y -8z = -15.............B

Now multiply equation A by -4:

36y + 8x = 140.........C

Add equations B and C:

25y = 125

y = 5.

Substitute for y in equation A:

-9*5 - 2z = -35

2z = -45 + 35 = - 10

z = -5.

Now find x by substituting for y and z in the first equation:

x - 5(5) - (-5) = -20

x - 20 = -20

x = 0.

6 0

3 years ago

Billy graphed the system of linear equations to find an approximate solution. y = x + y = x – 3 Which points are possible approx

valina [46]

The correct answer is (2.2, -1.35) and (2.2, -1.4)

Your Welcome,

Could I be marked brainliest please?

7 0

4 years ago

Read 2 more answers

Tracy has a total of $200 to spend while shopping. She already spent $122 on clothes . She wants to buy some video games that ar

mojhsa [17]

Question is Incomplete;

Complete question is given below;

Tracy had a total of $200 to spend while shopping. She has already spent $122 on clothes. She wants to buy some video games that are on sale for $20 each, including tax. Enter the maximum number of video games Tracy can buy with the remaining money.

Answer:

Tracy can buy maximum of 3 video games with the remaining money.

Step-by-step explanation:

Given:

Total money to spend on shopping = $200

Money spend on clothes = $122

Cost of each video game = $20

We need to find the number of Video games she could buy.

Solution:

Let the number of video games be 'x'.

So we can say that;

Money spend on clothes plus Cost of each video game multiplied by number of Video games should be less than or equal to Total money to spend on shopping.

framing in equation form we get;

$122+20x\leq 200$

Now by subtraction property of Inequality we will subtract both side by 122 we get;

$122+20x-122\leq 200-122\\\\20x\leq 78$

Now dividing both side by 20 using division property of inequality we get;

$\frac{20x}{20}\leq \frac{78}{20}\\\\x\leq 3.9$

Hence Tracy can buy maximum of 3 video games with the remaining money.

7 0

4 years ago