30 POINTS HURRY! Which of these graphs represents x < -1?

The answer is D

Hope this helped

Answer:

C

Step-by-step explanation:

Because They Have $20. They need to have $160. 160-20= $140

Answer:

according to me its just multiplying with the number ( -2)

like 9×(-2) = -18

36×(-2) = -72

The error made by the Gabriel in calculating the change amount, is that he subtract the $2 instead of adding $2.

Algebraic expression are the expression which consist the variables, coefficients of variables and constants.

The algebraic expression are used represent the general problem in the mathematical way to solve them.

The expression used by the Gabriel to represent his total cost  is,

[tex]2.5x+2y - 2[/tex]

As, Gabriel has to receive the change amount of $30. Thus, he has to subtract this amount from the total cost. This statement can be present as,

[tex]\rm Change=30-(2.5x+2y - 2)\\\rm Change=30-2.5x-2y + 2\\\rm Change=32-2.5x-2y[/tex]

Now, the expression used by him to represent the amount of change he should receive from $30 is,

[tex]28 -2.5x - 2y[/tex]

Hence, the error made by the Gabriel in calculating the change amount, is that he subtract the $2 instead of adding $2.

Learn more about the algebraic expression here;

https://brainly.com/question/2164351

The paid amount including service fee, tip, and tax is $77.987.

the percentage is value per hundred.

bill value = $59.99

service fee = 3% of  $59.99 = 59.99*3/100 = $1.7997

tip = 20% of 59.99 =  $11.998

tax = 7 % of $59.99 = $4.1993

total payment = 59.99+1.7997+11.998+4.1993 = $77.987

therefore, the paid amount including service fee, tip, and tax is $77.987.

to get more related to percentage visit:

https://brainly.com/question/24304697

If she spends $42 a week on coffee and every day she spends the same amount (I don't see this in the question, only doughnuts.), then $30 can get her 30 : 42 = 5/7 of a week of coffee -> 5 days.

So, she spends 5 days on coffee -> she must also spend 5 days on doughnuts

And since she spends 30 dollars equally everyday, she spends 30 : 5 = $6 everyday on doughnuts

A regular polygon with exterior angle of 7.2 degrees is a 50-gon.

Regular polygon are polygon that are equiangular. This simply means they are polygon with equal angles.

The formula to find the number of sides of a polygon using exterior angle is as follows:

where

n = number of sides

Therefore,

7.2 = 360 / n

cross multiply

7.2n = 360

divide both sides by 7.2

n = 360 / 7.2

n = 50

The polygon has 50 sides. Therefore, it is a 50-gon

learn more on polygon here: https://brainly.com/question/12105506

Answer: is shown in the image blew

Step-by-step explanation:

Answer:

Decrease by half.

Step-by-step explanation:

Let's say the length, width, and height is x,y,z respectively.

V = xyz

Now, when z is decreased by half, we get xyz : 2 which can either be written as (xyz) : 2 or xy(z:2)

So in short, if the height decrease by half, the volume will decrease in half.

Answer:

Total number of CDs= 10+5+12+3=30

Number of jazz CD= 3

Total number of outcomes that Kyle will select a jazz CD from the box= 3C1= 3!/1!2!= 3

Total number of outcomes for any CD = 30C1 = 30!/1$29! =30

Hence, the probability of picking jazz CD =3/30 = 1/10 0.1

Now since, one CD is out, the total number of CD left = 29

No. of country CD= 10

Total number of outcomes that Kyle will select a country CD from the box= 10C1= 10!/1!9!= 10

Total number of outcomes for any CD(one is out) = 29C1 = 29!/1$28! =29

Hence, the probability of picking country CD =10/29 = 0.344827

Step-by-step explanation:

The square root of 20 is between 4 and 5.

They are the numbers represented by positive real numbers where the fractions and decimal numbers are not included.

For solving this question, you should list the whole numbers whose your square is less than 30. Your list must present the following numbers:

0 ⇒ 0²=0

1 ⇒ 1²=1

2 ⇒ 2²=4

3 ⇒3²=9

4 ⇒ 4²=16

5 ⇒ 5²=25

Note that 6²=36, it is greater than 30,because of this it is not in the previous list.

The question asks to determine between which two whole numbers lies the square root of 20. Therefore, from the previous list, it is possible to see that the value 20 is between 16 and 25. The square root of 16 and 25 is equal to 4 and 5, respectively.

Thus, the square root of 20 is between 4 and 5. You can check this results in your calculator:[tex]\sqrt{20}=2\sqrt{5}=4.47[/tex]

Learn more about the square root here:

https://brainly.com/question/35767

2 part :-

SA = 6 side²

SA = 6 × 8²

SA = 6 × 64

SA = 384 cm²

Answer:

If you work over 5 hours in a day, you are entitled to a meal break of at least 30 minutes that must start before the end of the fifth hour of your shift.

Step-by-step explanation:

Answer:

200ml

Step-by-step explanation:

2/5 of 500ml

=2/5*500

=1000/5

=200ml

Answer:

B

Step-by-step explanation:

slope means the line is the amount of movement up or down, but b is not doing either, thus the slope is 0

Answer:

B

Step-by-step explanation:

Every other line has a slope except B

Answer:

The top one would be the answer

Answer:

O 10,000

Step-by-step explanation:

because i guessed lol

Answer:

the angles of a triangle always equal 180 so

75+40+x=180

115+x=180

-115

x=65

the other angle is 65

Hope This Helps!!!

65°

Step-by-step explanation:

let the third angle be x

so, sum of all angles of a triangle = 180°

x° + 75° + 40° = 180°

x + 115° = 180°

x = 180° - 115°

x = 65°

There you go. Hope this helps.

Answer:

4 and 6

Step-by-step explanation:

First, let's find all the pairs that add up to 10.

Next, we find the difference between the addends for each pair.

As you can, see the numbers that add to 10 and have a different of 2 is 4 and 6.

Answer:

[tex]\frac{4}{33}[/tex] and [tex]\frac{1}{27}[/tex]

Step-by-step explanation:

We require 2 equations with the repeating numbers placed after the decimal point.

let x = 0.1212...... (1) ← multiply both sides by 10

100x = 12.1212.... (2)

subtract (1) from (2) thus eliminating the repeating numbers

99x = 12 ( divide both sides by 99 )

x = [tex]\frac{12}{99}[/tex] = [tex]\frac{4}{33}[/tex] ← in simplest form

-------------------------------------------------------

let x = 0.037037....... (1) ← multiply both sides by 1000

1000x = 37.037037..... (2)

subtract (1) from (2) to eliminate the repeating numbers

999x = 37 ( divide both sides by 999 )

x = [tex]\frac{37}{999}[/tex] = [tex]\frac{1}{27}[/tex] ← in simplest form

Answer: try asking a parent or teacher

Step-by-step explanation: try asking a trusted adult or teacher to try to figure out how

The statements, which accurately reflect a way in which credit can be safer than cash are statement I and III. Option A is correct.

Credit card is the card issued by the bank which can be used to borrow funds from the bank in order to make the payment of different bills.

Lets, check all the statement.

Thus, the statements, which accurately reflect a way in which credit can be safer than cash are statement I and III. Option A is correct.

Learn more about the credit card here;

https://brainly.com/question/25205405

Answer:

A

Step-by-step explanation:

edge

Answer:

a) = 1007

b) =403.75

Step-by-step explanation:

Selling price is the amount at which an article or product is sold. It is represented by SP. The formula of S.P. can be given in terms of Profit or Loss as- 1. If S.P. is greater than C.P. which is the cost price of the item then a profit is gained by the shopkeeper.

a)

[tex]cp = 950 \: gain \: = 6\% \\ 950 \times \frac{6}{100} \\ \frac{950}{1} \times \frac{6}{100} \\ \frac{5,700}{100} \\ = 57 \\ add \: 57 \: to \: the \: original \: price \\ = 950 + 57 \\ = 1,007[/tex]

b)

[tex]cp \: = 380 \: gain \: = 6 \frac{1}{4} \\ cp = 380 \: gain \: = 6.25 \\ 380 \times \frac{6.25}{100} \\ \frac{380}{1} \times \frac{6.25}{100} \\ \frac{2,375}{100} \\ = 23.75 \\ add \: 23.75 \: to \: 380 \\ = 23.75 + 380 \\ = 403.75[/tex]

Answer:

[tex]\frac{48}{55}[/tex]

Step-by-step explanation:

In problems like this, it always helps to draw a picture.

-> See attached for the picture I drew (not to scale)

    Now, the trigonometric function tangent can be found with opposite / adjacent

    When looking at ∠D, the opposite side if 48 and the adjacent side is 55.

O / A = 48 / 55

Answer:

i believe it is either A/B but i think A

Step-by-step explanation:

The area of the shaded portion is (16π - 32) in².

The radius of a circle is the distance from the center of a circle to any point on the circle. If you place two radii end-to-end in a circle, you would have the same length as one diameter.

In the picture attached, the circle is shown.

The area of one-quarter of the circle is given by;

[tex]\rm = \dfrac{1}{4}\times Area\ of \ a \ circle \\\\= \dfrac{1}{4}\times \pi \times radius^2\\\\ = \dfrac{1}{4}\times \pi \times 8^2\\\\= 16\pi \ in^2[/tex]

The area of the triangle is given by;

[tex]\rm = \dfrac{1}{2} \times base\times height \\\\= \dfrac{1}{2} \times 8\times 8 = 32 \ in^2[/tex]

The area of the shaded portion is;

Shaded area = Area of one-quarter of the circle - Area of the triangle = (16π - 32) in²

Hence, the area of the shaded portion is (16π - 32) in².

To know more about the area of the circle click the link given below.

https://brainly.com/question/6667078

Solution:

Proving that Ian is not always true:

Proving that Ian is sometimes true:

This proves that: