Help please math is about to end

Answer:

Quadrant 1

Step-by-step explanation:

Answer:

It will be (x=1.y=6.z=-6

Answer:

Choice b

(x = 1,  y = 6, z = -6)  

Step-by-step explanation:

The system of equations is

3x + 4y  + 3z = 9     (1)
3x + 3y +  3z =  3      (2)

2x + 4y + 3z =  8      (3)

Subtract (2) from (1) to eliminate the 3x and 3y terms and solve for y

(1) - (2)

==> 3x + 4y  + 3z - (3x + 3y +3z) = 9 - 3

==> 3x + 4y + 3z - 3x - 3y - 3z = 6

(3x-3x) + (4y-3y) + (3z-3z) = 6

4y - 3y = 6

y = 6

Subtract (3) from (1) to isolate the x term

(3x - 2x) + (4y-4y) + (3z-3z) = 9 -8

x = 1

Divide equation (2) on both sides by 32 to eliminate the coefficients

Equation (2) ÷ 3

==> (3x + 3y + 3z) / 2 = 3/3

==> x + y + z = 1    (4)

Substitute the values of x and y in Equation (4)

1 + 6 + z = 1

7 + z = 1

Subtract 7 from both sides

==> z = 1-7 = 6

Answer:
(x = 1,  y = 6, z = -6)

The area of a square is the square of the length of a side is a^2.

The quantity of space occupied within the square can be used to calculate the size of a square using mathematics. We'll go over the equation for calculating the square's area below. It is mainly known for its geometric quadrilaterals. The simplest definition of a square is a regular polygon with four equal sides. A square has all the same facts and characteristics as regular polygons.

The number of square units that are anticipated to fill a square is used to describe the area of a square. The area is typically defined as the area included by the confines of a level article or 2D figure.

Mathematical Area of Square Formula = a×a=a^2.

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The function of  f(x) = (x+4)³ + 3 is one-to-one  then the value of

[tex]f^{-1} (x) = \sqrt[3]{x} - 4[/tex] and,

[tex]f^{-1} (2) = -2.7401[/tex]

The function f(x) = (x+4)³ + 3

Let us assume,

y = (x+4)³ + 3

A function is said to be invertible when it has an inverse. It is represented by [tex]f^{-1}[/tex]. Condition for a function to have a well-defined inverse is that it be one-to-one and Onto or simply bijective.

Then,

y = (x+4)³   and    y = 3

Therefore the inverse of y = 3 is the line x = 3

We can solve,

y = (x+4)³

The solution of Inverse function,

So,

[tex]\sqrt[3]{y} = x+4[/tex]

We can get,

[tex]x = \sqrt[3]{y} -4[/tex]

So the inverse of y is [tex]\sqrt[3]{x} -4[/tex]

f(x) = (x+4)³

So the inverse of f(x) is [tex]\sqrt[3]{x} -4[/tex]

Therefore, [tex]f^{-1}( x)[/tex] = [tex]\sqrt[3]{x} -4[/tex]

Then f(x) = 2

[tex]f^{-1} (x) = \sqrt[3]{x} - 4[/tex]

We can substitute f(x) = 2

[tex]f^{-1} (2) = \sqrt[3]{2} -4[/tex]      

Since, ∛2 = 1.2599

We can substitute this value,

[tex]f^{-1} (2) = 1.2599-4[/tex]

[tex]f^{-1} (2) = -2.7401[/tex]

Therefore,

The value of ,

[tex]f^{-1} (x) = \sqrt[3]{x} - 4[/tex] and,

[tex]f^{-1} (2) = -2.7401[/tex]

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Answer:

1st one

Step-by-step explanation:

My mom is a teacher lol

[tex]scale \: from \: b \: to \: a = \frac{3}{2} \\ x = \frac{2}{3} \times 10.5 = 7[/tex]

Answer:

What do you need help with?

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

43987-32650= 11337

And it’s more

Answer:

13.68

Step-by-step explanation:

72 * 0.19 = 13.68

19% can be converted to 19/100 or .19 to change out of a percentage. .19 is the multiplied by 72 to find 19% of 72.

For example

a fourth of something is the same as 25%.

if you want to find 1/4 of 8 you would multiply 8 by 1/4.

It is a similar concept with percentages.

Answer:

X = 9287.5

Step-by-step explanation:

Solving steps

7.5+ 9287=x+7

Calculate

9294.5=x+7

Move the terms

-x=7-9294.5

Calculate

-x=-9287.5

Change the signs

Solution

X = 9287.5

Answer:

(-1, 0) and (8, 9)

Step-by-step explanation:

x² - 6x-7 = x + 1

x² - 7x - 8 = 0

(x - 8)(x + 1) = 0

x = -1, 8.

When x = - 1, y = 0

and x = 8, y = 9

The length of BE is 15 cm.

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Answer:

602.88 cubic inches

Step-by-step explanation:

Volume of cylinder = pi ×r^2×height

=3.14×4^2×12

=3.14×16×12

=602.88

The number of minutes to take for the light to travel from the sun to the earth is 7.93×[tex]10^{1}[/tex] minutes.

The distance between the earth and sun=9.52×[tex]10^{7}[/tex] miles

The speed of the light from sun=1.2×[tex]10^{6}[/tex] miles per minutes

Speed=Distance/Time

Time= Distance/Speed

Substitute the values in the equation

Time taken for the light to travel from the sun to the earth = The distance between the earth and sun ÷ The speed of the light from sun

Substitute the values in the equation

=9.52×[tex]10^{7}[/tex]÷ 1.2×[tex]10^{6}[/tex]

=(9.52÷1.2)×[tex]10^{7-6}[/tex]

=7.93×[tex]10^{1}[/tex] minutes

Hence, the time taken for the light to travel from the sun to the earth is 7.93×[tex]10^{1}[/tex] minutes

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The miles for which  Austin drove the truck  is 141 miles

It is given that Austin rents a truck for one day

The daily rental base fee of the truck is $17.99

It is also given that additional charge of 73 cents per mile is charged.

It is also to be noted that 1$ =100 cents

Therefore, 73 cents in the form of dollar is 0.73$

Now it is given that total bill that is paid is $120.92

Now the total number of miles travelled by Austin is total bill minus the base fee and 73 cents multiplied by miles

Let the miles travelled by Austin be 'x'

Therefore, Miles travelled by Austin = 120.92$-17.99$

                                     0.73 x =(120.92 -17.99)  $                      

                                     x= 102.93 / 0.73

                                     x=141

Hence, the miles for which Austin drove the truck is 141 miles

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Answer:

C

Step-by-step explanation:

hope this helps!

Answer:

$70

Step-by-step explanation:

$70 was collected on the second day of the month.

Harold's total payment is  $5,841.50.

Percentage is the  fraction of a quantity that is expressed as a number out of hundred. The sign used to represent percentages is %. Percentages are a measure of frequency.

The total bill Harold would pay is the sum of the first $550, 25% of the remaining bill, 12% of the fee for prescription medications and the late payment fee since she paid after September 30.

Amount of total bill that Harold would pay = (100 - 75)% x (20,500 - 550)

25% x 19,950 = $4,987.50

Amount of the  prescription medications Harold pays : 12% x 450 = $54

Total bill - $550 + $4,987.50 + $54 + $250 = $5,841.50

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The value of x is 3 and  -3 respectively.

Given that;

From equation (1)

4x+60 < 72  

First, collect like terms

4x < 72 - 60

subtract like terms

4x < 12

Make 'x' the subject

x < 12/ 4

x < 3

For equation (2)

14x +11 <-31

collect like terms

14x < -31 - 11

14x < -42

Make 'x' the subject

x < -42/ 14

x < -3

Thus. the value of x is 3 and  -3 respectively.

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The maximum distance Jameel can travel is 11.5 miles

The equation that determines the distance is given as

2 + 0.4(4m - 1) = 20

Subtract 2 from both sides of the equation

So, we have

0.4(4m - 1) = 20 -2

Evaluate the like terms

So, we have

0.4(4m - 1) = 18

Divide both sides by 0.4

So, we have

(4m - 1) = 18/0.4

Evaluate the quotients

So, we have

(4m - 1) = 45

Remove the bracket

So, we have

4m - 1 = 45

Add 1 to both sides of the equation

4m = 46

Divide both sides of the equation by 4

So, we have

x = 11.5

Hence, the maximum distance Jameel can travel is 11.5miles

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Answer:

When the terminal side is in the first quadrant (angles from 0° to 90°), our reference angle is the same as our given angle. This makes sense, since all the angles in the first quadrant are less than 90°. So, if our given angle is 33°, then its reference angle is also 33°.

When the terminal side is in the second quadrant (angles from 90° to 180°), our reference angle is 180° minus our given angle. So, if our given angle is 110°, then its reference angle is 180° – 110° = 70°.

When the terminal side is in the third quadrant (angles from 180° to 270°), our reference angle is our given angle minus 180°. So, if our given angle is 214°, then its reference angle is 214° – 180° = 34°.

When the terminal side is in the fourth quadrant (angles from 270° to 360°), our reference angle is 360° minus our given angle. So, if our given angle is 332°, then its reference angle is 360° – 332° = 28°.

Step-by-step explanation:

3n just means 3 × n

To actually solve the equation, the value of n would have to be given.

In some equations, you would have to solve for n and then answer the equation, but that's not possible with this one.

Answer: Our carpet calculator will help you determine your approximate floor area in square metres. Simply measure the length and width of each room to the nearest 10cm, i.e. 5.4m x 3.7m, then enter your totals into the calculator and hit the 'calculate' button at the bottom.  

For awkwardly shaped rooms (such as an L shape) divide the room into blocks, measure them separately and add them in as individual rooms.

Step-by-step explanation:

Figure B is not a scale copy of figure A. The answer is NO. The corresponding lengths of both figures have different ratios.

If a figure is the scale copy of another figure, the corresponding side lengths of both figures would be proportional to each other, which means their ratios would be the same.

From the figure given, the ratios of their side lengths are:

18/9 = 2

12/12 = 1

30/15 = 2

This shows that their ratios are not the same.

Therefore, we can conclude that figure B is not a scale copy of figure A. The answer is NO. The corresponding lengths of both figures have different ratios.

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The total weight of the envelop after n paper clips have been added is w(n) = 0.5n + 6.75

An equation is an expression that shows the relationship between two or more numbers and variables.

Let w(n) represent the total weight of the envelop with n paper clips. A paper clip weighs 0.5 grams and an empty envelope weighs 6.75 grams. Hence:

w(n) = 0.5n + 6.75

The total weight of the envelop after n paper clips have been added is w(n) = 0.5n + 6.75

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Answer: (4m+n)(4m-n)

Step-by-step explanation:

16m² -n²=

(4m)²-n²=

(4m)²+4mn-4mn-n²=

4m(4m+n)-n(4m+n)=(4m+n)(4m-n)

Answer:

[tex] = { \tt{16m {}^{2} - {n}^{2} }} \\ { \tt{ = {4}^{2} {m}^{2} - {n}^{2} }} \\ { \tt{ = (4m - n)(4m + n)}}[/tex]