by what number must row 2 in the matrix??

By What Number Must Row 2 In The Matrix??

Answers

Answer 1

Answer:

Look at the picture

Step-by-step explanation:

i took the test

By What Number Must Row 2 In The Matrix??
Answer 2

The row 2 in the matrix must be multiplied by 0.5

Matrix Multiplication

According to the question;

The row 2 contains elements; 2 0 -2

Hence, let the required number to multiply row 2 be; x so that;

2 × X = 1

0 × X = 0

-2 × x = -1

From all the equations above; it follows that;

x = 1/2 = -1/-2

Hence, the required number is; 1/2 = 0.5

Read more on matrix multiplication;

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Related Questions


Melanie earns $7 per hour when she
baby-sits. An equation for this relation
is w = 7h, where h represents the
number of hours and w represents
Melanie's wage in dollars.
a) Use the equation to create a table
of values.
b) In one week, Melanie earned $105.
How many hours did she baby-sit?
c) In one month, Melanie baby-sat for
24 h. How much did she earn
from baby-sitting in that month​

Answers

Answer:

A) We know that she make $7 per hour, with this we can make a table:

1hr | $7

2hr | $14

3hr | $21

etc...

B)  If in one week she earns $105 and 1w = 7h (1hr = $7) holds true, that means that we have to divide 105 by 7 which gives us 15hrs

C) If she baby-sat for 24hrs, we just have to multiply that by 7 and we get $168

Hope that helped!

Pls help grades close today I’ll brainlest

Answers

Answer:

first

Step-by-step explanation:

Answer: first, 23

Step-by-step explanation

For the first one the unit rate is 1/23

And for the second the unit rate is 1/32

19 - k = 4.




I need help​

Answers

Answer:

15

Step-by-step explanation:

first you have to subtract 4 from 19 to get what k is. that should be your answer. good luck!

Answer
The multiplicative rate of change that should be in Hal’s function = 49/50=0.98
=9.8×10⁻¹

Explanation
The investment of $10,000 decreases by 2% every year. So the following year is usually (100 - 2)=98% of the previous year. This is a geometric progression.
In this case the first term = 10000
The second term = 98% × 10000 = 9800.
The common ratio = 9800/10000=49/50
The multiplicative rate of change that should be in Hal’s function = 49/50=0.98.
The equation of the exponential rate would be;
10,000ₓ0.98ⁿ.
where n is the number years.

Answers

Answer:

Answer:

1). Option (A)

2). Option (A)

Step-by-step explanation:

1). A worker bee has the mass = 0.00011 kg

  In scientific notation we can convert the mass of bee as,

  0.00011 =

                =

  Since 1.1 ≈ 1,

  Therefore, 1.1 × 10⁻⁴ ≈ 1 × 10⁻⁴ kg

  Option (A) is the answer.

2). An African elephant has a mass = 8139 kg

   In scientific notation,

   8139 = 8.139 × 10³

   Since, 8.139 ≈ 8

   Therefore, 8139 kg = 8.139 × 10³ kg

   Option (A) is the answer.

Step-by-step explanation:

Hope this helps! ;)

Answer:

The investment of $10,000 decreases by 2% every year. So the following year is usually (100 - 2)=98% of the previous year. This is a geometric progression.

In this case the first term = 10000

The second term = 98% × 10000 = 9800.

The common ratio = 9800/10000=49/50

The multiplicative rate of change that should be in Hal’s function = 49/50=0.98.

The equation of the exponential rate would be;

10,000ₓ0.98ⁿ.

where n is the number years.

Step-by-step explanation:

In a highschool, for every 13 students that take English class, There are 16 students who take math class. How many students take math if there are 65 students in English class?​

Answers

Answer:

80 students

Step-by-step explanation:

take 65 divide by 13, then x 5

Answer:

the correct answer would be 80 but if im wrong please correct me

Step-by-step explanation:

Choose a missing numbers that make the following expression equivalent ____x + 14 and 7 ( 5 x + _____ )​

Answers

Answer:

35x + 14 and 7(5x + 2)​

Step-by-step explanation:

We have to find the missing values that would also make both expressions equivalent.

_x + 14 and 7(5x + _ )​

In the expression, there are some similarities with the placement of the numbers and variables.

Let find the value of the number next to "x".

You can see that we have to use the distributive property to solve the right expression, and once we do so, we can find our first value.

Use the distributive property:

7(5x)

35x

Now we know that our first value is 35x.

To find our second value, we see that in the first equation it is "14", so we need a number that can be multiplied by 7 to make 14.

7 · 2 = 14

Our second number would be 2.

Your final answer would be: 35x + 14 and 7(5x + 2)​

Once you use the distributive property for the second expression, you would get an equivalent expression as the first one.

Which graph represents a linear function?

Answers

Answer:

Graph two would be the answer because it is not curving.

Step-by-step explanation:

which of these are rational numbers
-7
2/3
0.7584
all of these

Answers

All of these is the answer

how do i do this please help!

Answers

Answer:

id no lollll prob 3

Step-by-step explanation:

5-4x=23
What's the value of x and please show your work. ​

Answers

Answer:

x = 9/2 or 4.5

Step-by-step explanation:

5-4x=23 |-5

5-4x-5=23-5

-4x=18 |*(-1)

4x=18 | /2

2x=9 |/2

x=9/2 or 4.5

Answer:

x = 4.5

Step-by-step explanation:

Subtract 5 from BOTH sides to start with:

5-5 = 0 (5 cancels out on left side) 23-5 = 18

New Equation: -4x = 18

Divide BOTH sides by -4

4 cancels out (x is left) 18/4 = 4.5

New: x = 4.5

f(x)=6x+4. Find the inverse of f(x).

Answers

Answer:

c

Step-by-step explanation:

f(x)=6x+4

y=6x+4

x=6y+4

6y=x-4

y=(x-4)/6

f^-1(x)=(x-4)/6

Answer is Option-C

How to find Inverse Function:

1. First, replace f(x) with y. This is done to make the rest of the process easier.

2. Replace every x with a y and replace every y with an x.

3. Solve the equation from Step 2 for y.

(Here), Given

f(x) = 6x + 4

Let's inverse function be y.

y = 6x + 4

First step is to switch the positions of x and y.

Inverse: x = 6y + 4

x - 4 = 6y

=> y = (1/6) * (x - 4)

Option-C

Learn more about Inverse functions here:

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1/2 + 2/3 divided by 1/6 =

Answers

Answer:

4 3/6 or simplified 4 1/2

Step-by-step explanation:

Answer:

The answer is 4.5

Step-by-step explanation: Trust me thats the answer :)

How many 5/7 cups servings are in a 5 cup container of food?

Answers

Answer:

7 servings of a 5/7 cup = 5 cups

Write an equation in slope-intercept form that is perpendicular to y = -7x + 3 and passing through (14.1).

Answers

Answer:

y = 1/7x -1

Step-by-step explanation:

1) Find the slope.

- In this case, the equation given is in simplest form so you can easily come to the conclusion that '-7' is the slope. But, since the math question wants a slope-intercept form in perpendicular form, the slope would actually be 1/7.

2) Use the point-slope form and substitute the values available. Then solve.

m (slope) = 1/7

(a, b) = (14, 1)

y - b = m(x - a)

y - 1 = 1/7(x - 14)

y - 1 = 1/7x - 2

y = 1/7x - 1

The result is your answer.

Hope this helped (please tell me if I made a mistake or if you have any confusion and I will resolve it under the comments) ^^

Mei has 60 milliliters of a solution that is 35% nitric acid. How manny milliliters of nitric acid does the solution contain?

Answers

Answer:

21 milliliters

Step-by-step explanation:

60/100=0.6

0.6*35=21

A pastry chef can decorate 1 cake in 7 minutes. How many cakes can he
decorate in 56 minutes?

A. 392 cakes

B. 8 cakes

C. 9 cakes

D. 63 cakes

Answers

It’s b but are you really in college because there is now way you can’t solve that

Please help me solve this

Answers

Answer:

60

Step-by-step explanation:

Set up an algebraic equation

360= 2a+ 2a+ a + a

360= 6a

60= a

Since the sum of the angles is 360, they can be added together.

In the triangle below, what is the length of the side opposite the 30° angle? Picture and answers in attachment.

Answers

Answer:

The answer to this question is B.

Find each unit rate.

140 mi in 3.5 h
a.
40 mi per h
c.
0.03 mi per h
b.
143.5 mi per h
d.
35 mi per h

Answers

a. 40 miles per hour

Answer:

40

Step-by-step explanation:

took the test

100 - (25 + 40) +5 What is the answer?​

Answers

Answer:

100-25=75 75+40=115 115+5=120

Answer:

The answer is 40.

Step-by-step explanation:

100 - (25+40) +5

100- (65) +5

35 +5

= 40

9 57
If A=
18
find 2A.

Answers

Option C ‌‌‍‌‍‍‍‍‍‍‌‍‍‍‍

Computer packages at an electronics store are priced $1,729.99, $2,249.99, $2,139.99, $1,979.99, and $999.99.

What is the range of the prices of the computer packages?

Answers

Answer:1250

Step-by-step explanation:

You take the highest number 2249.99 and subtract the lowest number 999.99 to get the range of 1250

The range of the prices of the computer packages is $1250.

What is Statistics?

Statistics is the discipline that concerns the collection, organization, analysis, interpretation, and presentation of data.

Given,

Computer packages at an electronics store are priced $1,729.99, $2,249.99, $2,139.99, $1,979.99, and $999.99.

One thousand seven hundred and twenty nine point nine nine comma two thousands two hundred forty nine point nine nine comma two thousand one hundred thirty nine point nine nine comma one  thousand nine hundred seventy nine point nine nine comma nine hundred ninety nine point nine nine.

Range is the difference between highest value minus lowest value.

Range=Highest value - Lowest value

Range=$2,249.99-$999.99.

Range=$1250

Hence, the range of the prices of the computer packages is $1250.

To learn more on Statistics click:

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determine the slope of the linear graph y=12x+7

Answers

Answer:

12x

Step-by-step explanation:


AABC has been translated right to create triangle AXYZ. Based on this information,
which of the following is a true statement?
OA) BEX
B) LAC
C)
Z = AC
D
0 % ZY

Answers

Answer:

C.) XZ ~= AC

Step-by-step explanation:

That is your answer. Hope this helps

-3a + 4 = -14
What the answer to this

Answers

Answer:

-6

Step-by-step explanation:

-3a + 4 = -14

-3a = -14 - 4

-3a = -18

a = -18 / 3

a = -6

Answer:

a = 6

Step-by-step explanation:

Step 1: Subtract 4 from both sides.

-3a + 4 - 4 = -14 - 4

+4 and -4 cancel out.

Step 2: Subtract 4 from -14 to get -18.

-3a = -18

Step 3: Divide both sides by -3.

a = -18/-3

Step 4: Divide -18 by -3 to get 6.

a = 6

Let's check our work by substituting a for 6.

-3(6) + 4 = -14

Multiply -3 by 6 to get -18.

-18 + 4 = -14

Add -18 and 4 to get -14.

-14 = -14

This is true, so a = 6.

Help me out, if right get brainlest​

Answers

Answer:

PQN≈STR

Step-by-step explanation:

In the United States 52% of cat onwers have more than one cat what is 52% written as a decimal

Answers

Answer:

The answer is 0.52!

Step-by-step explanation:

You need to divide 52 by 100, which gives you 0.52. Hope this helps!

0.52 have good day hope helps

Match each equation to its solution

Answers

Step-by-step explanation:

First one on the left = Second one on the right

Second one on the left = First one on the right

Third one on the left = Third one on the right

PLEASE HELP. I don't understand! I will give brainliest!


Below is a graph that contains the lines for all the above equations. Find the line that represents each equation, based on the ordered pairs, and write the equation next to each letter for the line that it represents.

What is the equation for A, B, and E?

Answers

Answer:

A is Y equally X

B is X equally 2

E is Y equally -5

Ed use 3 2/3 cups of peanut butter and 2 cups of powdered sugar to make 1 batch of peanut butter fudge. How much more peanut butter will Ed use than powdered sugar to make 3 batches of fudge?

Answers

Answer:

Ed will use 5 more peanut butter  than powdered sugar to make 3 batches of fudge(11-6=5)

Step-by-step explanation:

3 2/3 cups of peanut butter (x)

2 cups of powdered sugar(y)

for every one batch you need 2 cups, and for 3 batches you need 6 cups of powdered sugar(2*3=6)

and  for every batch you need 32/3 cups of peanut butter and for three batches you need (3 2/3 *3)= 11/3 *3=33/3=11 cups of peanut butter to make the fudge

Ed will use 5 more peanut butter  than powdered sugar to make 3 batches of fudge(11-6=5)

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