NEED HELP ON #1 PLEASE ASAP!!!

Answer:

B. a square matrix

Step-by-step explanation:

Because diagonal matrix are those matrix having non zero elements only on diagonal and rest all are zero.

Square matrix are those having number of rows equal to number of columns.

Zero matrix is a matrix having all elements equals to zero.

Identity matrix are those matrix having one only on diagonal and rest all elements are zero.

Answer:

-8.5

Step-by-step explanation:

Answer:

[tex]x = 37[/tex]

Step-by-step explanation:

[tex]2x + 1 = 75[/tex]

[tex]2x = 75 - 1[/tex]

[tex]2x = 74[/tex]

[tex] \frac{2x}{2} = \frac{74}{2} [/tex]

[tex]x = 37[/tex]

Answer:

9r

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

Based on the information you have given me, p = 1/3.

All we need to do is substitute that value into the expression:

12p = 12(1/3) = 4

Answer:

Elsie

Step-by-step explanation:

It's kinda obvious

Answer:

Ramon

Step-by-step explanation:

Ramon walked further

Answer:

I'm pretty sure that X=3

Answer:

An equation of slope:

y = -5x+72

Step-by-step explanation:

The equation of slope intercept is given by:

where m is the slope and c is the y-intercept or initial value.

Let x represents the time in minutes and y represents the height of the water level

As per the statement:

The water level in Noah's water tank is 72 inches high.

At x = 0

y= 72

It is also given that:

The water drains at a speed up 5 inches per minute.

Here, m represent the slope in inches per minute

(as the water drains)

Substitute in [1] we get;

y = -5x+c

Substitute x = 0 then;

72 = -5(0)+c

72 = c

⇒equation becomes: y = -5x+72

Therefore, an equation of slope is y = -5x+72

Answer:

The mean of the 10 sales amounts for store A is $40,000.

Step-by-step explanation:

Given;

yˆ= −3,000 + 1.2x ...................... (1)

Where;

x = sales amounts each day at store A or the mean of the 10 sales amounts for store A = ?

yˆ = sales amounts each day at store B or the mean of the 10 sales amounts for store B = $45,000

Substituting y = 45,000 into equation (1) and solve for x, we have:

45,000 = −3,000 + 1.2x

45,000 + 3,000 = 1.2x

48,000 = 1.2x

x = 48,000 / 1.2

x = 40,000

Therefore, the mean of the 10 sales amounts for store A is $40,000.

Answer:

The first one

Step-by-step explanation:

The function f(x) = {x + 3,  x < 0,    3      x ≥ 0} represents the graph.

In mathematics, the set of ordered pairings where f(x)=y exists is the graph of a function f. These pairs are Cartesian coordinates of points in two-dimensional space and so form a subset of this plane in the typical situation when x and f(x) are real integers.

here, we have,

given that,

As show in the graph we can see that the function has a graph of x + 3 on left side of the y - axis for x < 0.

And the function has the constant graph y = 3 for x ≥ 0.

Therefore, the given graph is the graph of the function,

f(x) = {x + 3,  x < 0,    3      x ≥ 0}.

To know more about the graph, click on the link

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Complete question:

He graph of a function is shown.

5

4

3

2

-

y

--5-3-2-1₁ 1 2 3 4 5 x

-2-

-3+

7 9

Which function is represented by the graph?

O f(x) =

O

f(x) = {3

O f(x):

x-3, x<0

3,

x20

11

x + 3, x < 0

x 20

-x+ 3, x ≤ 0

3,

x>0

○ f(x) = { 3*

O

-x-3, x ≤0

x > 0

Answer:

20% increase

Step-by-step explanation:

Answer: 20% increase!

Step-by-step explanation:

$60-$50= $10 Increase

10/50*100% = 20%

hope this helped, have a nice day! :)

Answer:

A: -2z +22

Step-by-step explanation:

14 - 3z + 8 + z

14 + 8 - 3z + z

   22 - 2z

   -2z + 22

Answer:

41

Step-by-step explanation:

complementary angle = sum of 90°

so 49 + 41 = 90

Answer:

41

Step-by-step explanation:

49+41=90

Answer:

57.55 ounces

Step-by-step explanation:

Given data

Each book weighs 12.235 ounces

Hence the weight of 4 books is

=12.235x4

=49.3 ounces

Each pencil weighs 8.25 ounces

Hence the weight of 4 books is

=8.25x1

=8.25ounces

Total weight is

=49.3+8.25

=57.55 ounces

Answer:

f(3)=0, f(4)=-60

f(n) = f(n-1) + (-60)

Step-by-step explanation:

Arithmetic Sequences

The arithmetic sequences are identified because any term n is obtained by adding or subtracting a fixed number to the previous term. That number is called the common difference.

The equation to calculate the nth term of an arithmetic sequence is:

f(n)=f(1)+(n-1)r

Where

f(n) = nth term

f(1) = first term

r   = common difference

n  = number of the term

The given sequence has two known terms: 120, 60, ...

The common difference is found by subtracting consecutive terms:

r = 60 - 120 = -60

Thus the next two terms are:

f(3)=120+(3-1)(-60)=120-120 = 0

f(4)=120+(4-1)(-60)=120-180 = -60

Since each term is calculated as the previous term plus -60, then the recursive formula is:

f(n) = f(n-1) + (-60)

Answer:

6x^2+12x+29+50/x-2

Step-by-step explanation:

Answer:

2 1/3 is a mixed number!

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Look at your problem, That is your answer

Answer:

∠w and ∠v; ∠x and ∠y

Step-by-step explanation:

hope this helps

Answer: Press windows and search up snip and sketch the open and take a screen shot

Answer:

Step-by-step explanation:

<NOC is 31 because it is a vertical angle to <BOK, which is also 31

<DOC is 62 because it is two times the bisected <NOC. 2*31=62

<DON is 31 because it is the bisected angles <DON and <NOC are equal.

<TOC is 118 because <KOT and <NOC are both 31 degrees. Since they lie on a line together, the three angles should add up to 180 degrees. 180-31-31 = 118

I hope this helps! :)

Answer:

35 bagels

Step-by-step explanation:

Duh

Answer:

14% tip

Step-by-step explanation:

tip: $5.60 on $40

40-5.60=34.4

36.6/40x100

86%

=(100-86)

=14%

Answer:

30 minutes

Step-by-step explanation:

First you can break down the percent and the time into a fraction

You can divide it by 2

so 2%/1   (2% in 1 minute)

Then you find the amount of time it would take to paint the whole bookcase

2 * 100 = 50

So time to paint the whole bookcase would be 50

50 - 20 = 30

Answer:

30 minutes

Step-by-step explanation:

He paints 40% of the bookcase in 20 minutes.

The rest of the bookcase is 100% - 40% = 60%.

60% of the bookcase still needs painting.

40% is to 20 minutes as 60% is to x minutes

40/20 = 60/x

Reduce the fraction on the left side.

2 = 60/x

Multiply both sides by x.

2x = 60

Divide both sides by 2.

x = 30

Answer: 30 minutes

Answer:

Fraction form: -7/2

Decimal form: -3.5

Move all terms to one side

4w^2 + 49 + 28w = 0

Rewrite 4w^2 + 49 + 28w in the form a^2 + 2ab + b^2, where a = 2w and b = 7

(2w)^2 + 2(2w)(7) + 7^2 = 0

Use the Square of Sum: (a + b)^2 = a^2 + 2ab + b^2

(2w + 7)^2 = 0

Take the square root of both sides

3w + 7 = 0

Subtract 7 from both sides

2w = -7

Divide both sides by 2

w = -7/2

Answer:

$103.08

Step-by-step explanation:

The total cost of the scooter including tax to the nearest cent will be $103.08.

The quantity of anything is stated as though it were a fraction of a hundred. A quarter of 100 can be used to express the ratio. Per 100 is what the term percent signifies. The symbol ‘%’ is used to symbolize it.

Olive is going to buy a scooter that costs $95. The sales tax rate is 8.5%.

The amount of the sales tax will be

Sale tax = 8.5% of $95

Sale tax = 0.085 × $95

Sale tax = $8.075

The total cost of the scooter including tax to the nearest cent will be

Total cost = $95 + $8.075

Total cost = $103.075 ≈ $103.08

The total cost of the scooter including tax to the nearest cent will be $103.08.

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Answer:

yellow

Step-by-step explanation:

im not sure what its asking so im guessing what the point is

Answer:

The original cost is

$385

Step-by-step explanation:

Step one:

given data'

cost of bicycle= $138

helmet = $16

Total cost = 138+16= $154

Step two:

let the original cost be x

we are told that 40% of x= 154

hence

40/100*x= 154

0.4x=154

divide both sides by 0.4

x= 154/0.4

x=$385