Only do question 15

50 points

Topic: Percentage

Answer:

2:50

Step-by-step explanation:

On an ordinary clock, there are 24 hours.

1)  6/24 = 0.25   (The percentage in which the day has passed)

2) 10 (total hours in a day in the decimal clock) * x 0.25 = 2.50

3) 2.5 Hours. On a typical clock, that would read 2:30, however, because the decimal clock proposes that there are 100 minutes in one hour, it will be 2:50, Therefore, the clock will display 2:50

The time that is shown in a decimal clock when it is 6 am in the ordinary clock is 2:30 am.

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

Decimal clock:

One day = 10 hours

Ordinary clock:

One day = 24 hours

6 am is the first quarter of the day.

This means,

There are 4 quarters in a day.

So,

One quarter is 6 hours.

Now,

Number of hours in one quarter in the decimal clock

= 10/4

= 2.5 hours

This means,

2:30 am when it's 6 am in the ordinary clock.

Thus,

The time shown in the decimal clock is 2:30 am.

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Answer:

There is 1kg of zinc in 3kg of brass

Step-by-step explanation:

Here, we are interested in knowing the amount of zinc present in 3kg of brass

Brass is an alloy of copper and zinc.

Now to get the amount of zinc present, we have to use the ratio;

The ratio of zinc is 1

So the amount of zinc present is calculated as follows;

Total ratio = 2+ 1 = 3

Thus;

1/3 * 3kg = 1kg

Given:

To find out:

Find the value of 12s - 2rt + 101?

Solution:

12s - 2rt + 101

=> 12 × 5 + 2 × 2 × 8 + 101

=> 60 + 32 + 101

=> 92 + 101

=> 193

Answer: For the first image, D will be the correct answer. For the second image, A will be the correct answer.

Step-by-step explanation:

The first image has a quite simple answer because translating the shape just means moving every point in the direction given according to some many units. In this case, we would be translating points A(-4,3), B(-3,1), and C(-1,2) 5 units right and 5 units down to get us the prime points of A'(1,-2), B'(2,-4), C'(4,-3).

In the second image, a reflection just describes a flip over some line, known as the line of reflection. We change the point's signs depending on the line of symmetry we are given when reflecting (in this case, the y axis). Reflecting the trapezoid over the y axis will result in a change of signs of the x values of the given points. Point A of the trapezoid is located on coordinate (-2,2), after the reflection, it will be located on point (2,2). Points B will reflect from point (-1,2) to point (1,2). Point C will reflect from (-1,1) to (1,1). Finally, point D will reflect from point (-3,1) to (3,1). After this reflection, we have to perform the same one except only the y values of our coordinates will change because we are reflecting over the x axis. After you graph the trapezoid from the previous reflection, do the same thing by just changing the y values of the coordinates to get your desired image.

Answer:

D

A

Hope this helps!

Answer:

Step-by-step explanation:

AE is 9. ED is 6. The triangle ABE is proportional to ACD, so their sides are proportional. For example, AE:ED = AB:BC. So, ED/AE = 2/3 = BC/AB. This gives us 2/3 = x/10, which gives us x=6.6667

Answer:

x=60

y=300

Step-by-step explanation:

x=60

y=300

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girls + boys = 100%

If girls are 75%, then boys would be 25%

75% of 32 is 24

25% of 32 is 8

There are 24 girls and 8 boys

Have A Nice Day ❤    

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Answer: -5/2

Step-by-step explanation: Because you take the x1 and y1 and subtract it from x2 and y2. That gives you -20/8. Then you simplify.

Answer:

B

Step-by-step explanation:

im not sure of the answer

The pair of angles that are supplementary are ∠YZX and ∠UZT.

Option C is the correct answer.

The angles between two lines are the angles formed by two intersecting lines, measured in degrees or radians.

Several different types of angles can be formed between two lines, including acute angles, right angles, and obtuse angles.

We have,

From the figure,

∠YZX and ∠UZT are opposite angles.

And they can form a supplementary.

This means,

∠YZX + ∠UZT = 180

Thus,

The pair of angles that are supplementary are ∠YZX and ∠UZT.

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Answer:

Option (B)

Step-by-step explanation:

From the figure attached,

Triangle with vertex C' is a translated form of the triangle with vertex C.

Coordinates of pre-image C → (2 , 6)

Coordinates of the image C' → (-4, 4)

Rule followed from pre-image C to image C',

(2, 6) → (-4, 4)

(2, 6) → [(2 - 6), (6 - 2)]

(x, y) → [(x - 6), (y - 2)]

Therefore, rule given in option (B) is the answer.

Answer:

it is B

Step-by-step explanation:

Answer:

[tex] \boxed{z = -6.3} [/tex]

Step-by-step explanation:

[tex] = > - 2.9 + 4.2z = - 14.73 - 12.74 + 0.3z \\ \\ = > - 2.9 + 4.2z = - 27.47 + 0.3z \\ \\ = > 4.2z - 2.9 = 0.3z - 27.47 \\ \\ = > 4.2z - 0.3z - 2.9 = - 27.47 \\ \\ = > 3.9z = - 27.47 + 2.9 \\ \\ = > 3.9z = - 24.57 \\ \\ = > z = - \frac{24.57}{3.9} \\ \\ = > z = - 6.3[/tex]

Answer:

a is adjacent, b is opposite, c is the hypotenuse

Step-by-step explanation:

A right angled triangle must contain the opposite, the adjacent and the hypotenuse. The opposite is the side that directly faces the angle of interest. The adjacent is the side that is close to the angle of interest.

Given that the angle Y is positioned between X and Z, the point b becomes the opposite of Y. The point a becomes adjacent to angle Y while c remains the hypotenuse of the right angled triangle.

The image below typifies the explanation given above. It shows the relationship between the three sides of the right angled triangle in detail.

Answer:

a is adjacent, b is opposite, c is the hypotenuse

Step-by-step explanation:

i took the test on ed.

Answer:

X=18

Y=52

Step-by-step explanation:

Let X represent the first type of ticket sold at the concert

Let Y represent the second type of ticket sold at the concert-----equation 1

X + Y= 70 (Total number of tickets sold) ------equation 2

(X×10) + ( Y×12)=$804. ( Total money generated in the concert

Since,

X+Y= 70

X= 70-Y

Substitute (70-Y) for X in equation 2

(70-Y)×10 + Y×12=804

700-10Y+12Y= 804

Collect the like terms

700+2Y=804

2Y=804-700

2Y= 104

Divide both sides by the coefficient of Y which is 2

2Y/2= 104/2

Y=52

Substitute 52 for Y in equation 1

X+Y=70

X+ 52=70

collect the like terms

X= 70-52

X=18

Hence the first type of ticket sold is 18 tickets and the second type of ticket sold is 52 tickets.

Answer:

a fraction

Hope this helps!

Answer:

90 cents

Step-by-step explanation:

7x+2(1.30)=10-1.10

7x=8.9-2.6

x=6.3/7= 0.9

Answer:

$.90 or 90 cents each

Step-by-step explanation:

10-2(1.30)-7(x)=1.10

10-2.6-7x=1.10

7.40-7x=1.10

7x=6.3

x=6.3/7

=.90

Answer: The correct answer is D the range of the graph is all real numbers greater than or equal to 0.

Step-by-step explanation

Range [0,infinity] {y|y greater than or equal to 0}

Answer:

D

Step-by-step explanation:

Answer:

D) x ≤ 3

Step-by-step explanation:

The inequality that matches the graph is x ≤ 3. This is because x is less than or equal to 3 as shown in the graph.

Answer:

D.) 1/16 (42-x).

Step-by-step explanation:

it was right on edg 2020

In the table that represents the distance of the trip down the hill, the missing value is  ¹/₁₆(42 - x).

Distance is the length of space between two points.

Distance = speed x time

In the table that represents the distance of the trip down the hill, the missing value is calculated as follows;

Distance = ¹/₁₆ x (42 - x)

[tex]Distance = \frac{1}{16(42-x)}[/tex]

Thus, In the table that represents the distance of the trip down the hill, the missing value is  ¹/₁₆(42 - x).

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Answer:

Step-by-step explanation:

If [tex]A =\pi xy[/tex], then π, x, and y are all multiplied together. Multiplication is undone by division, so we will divide away the πx to solve for y:

[tex]\frac{A}{\pi x}=y[/tex] which is your last option.

Here, we are required to find an equivalent equation solved for y if the area, a is given by;

a = πxy

An equivalent equation solved for y is;

y = a ÷ (πx)

To find an equivalent equation solved for y,

We have to make y the subject of the formula in;

a = πxy.

Therefore, by dividing both sides of the equation by πx, so that y is left alone on the right hand side.

Therefore, y = a ÷ (πx).

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Answer: 256 CAD

Step-by-step explanation:

Hi, to answer this question we simply have to multiply the price in US dollars of the iphone (320) and multiply it by 0.80 ( Canadian dollar to US dollar exchange rate)

Mathematically speaking:

Since:

$1 US = 0.80 CAD  

$320 x0.80 = 256 CAD

Feel free to ask for more if needed or if you did not understand something.

Answer:

its 16/30 or 8/15

Step-by-step explanation:

if the total is 30 and 16 of them are in his school the probability of calling a person from school is 16/30 which is simplify to 8/15

Answer:

P of calling someone from school = [tex]\frac{8}{15}[/tex]

Step-by-step explanation:

The probability of calling someone from school is

[tex]\frac{16}{30}=[/tex]

[tex]\frac{8}{15}[/tex]

P of calling someone from school is [tex]\frac{8}{15}[/tex]

Answer:

ry-axis(x, y) → (–x, y)

rx-axis(x, y) → (x, –y)

Step-by-step explanation:

When you reflect over the x axis, the y values change. When you reflect over the y axis, the x values change.

Answer:

Option C is your answer

I says on my notes but it won't show you for some reason

I've done this before.

Step-by-step explanation:

Answer:

x = 22°

y = 26°

z = 48°

Step-by-step explanation:

∠PQS and ∠QSR is a pair of alternate interior angles

plus PQ is parallel to SR

then

x = 22°

SPR is an isosceles triangle then m∠PRS = 66°

Therefore x + y = 180-(66+66) = 180-132 = 48

then y = 48 - x = 48-22 = 26

finally, z = x + y = 48

Answer:

x = 22

y = 26

z = 48

Step-by-step explanation:

ΔSPR is isosceles, meaning two angles are equal, as indicated.

one base angle is 66, meaning the other one is also 66.

alternate angles are equal ; angle Q = angle S = 22 = x

To find the other angle of the triangle below, add 22 and 66 and subtract from 180 to get 92.

vertically opposite angles are equal ;       92

                                                              88             88

                                                                       92

the triangle on the upper right has 92, 22, and the missing angle which is 66.

the upper left triangle has 88, 66 and the missing which is 26 = y

the straight line above(PQ), now has 66, 66 and the missing one .add , then take away from 180 to get 48 = z

Answer:

x=36

Step-by-step explanation:

The angles in a triangle must add to 180 degrees.

Therefore,

x+65+79=180

Add 65 and 79

x+144=180

We want to solve for x. In order to do this, we have to get x by itself. 144 is being added to x (+144)The opposite of addition is subtraction, so subtract 144 from both sides(-144)The +144 and -144 will cancel out, and leave x by itself.

x+144-144=180-144

x=180-144

x=36

Let’s check our answer. Add all the angles together, and make sure they equal 180 degrees.

x+65+79

We know x is equal to 36, so we can substitute it in

36+65+79

180

The 3 angles add to 180, so we know that x=36

Answer:

D.8

Step-by-step explanation:

A cube's volume is basically the side length multiplied by itself 3 times, so if it was increased by a factor of 2, it would mean 2x2x2 which equals 8.

Answer:

Take the square root of each side

Add 5 to each side

Step-by-step explanation:

(x-5)^2 = 25

Take the square root of each side

sqrt((x-5)^2 ) = ±sqrt(25)

x-5 = ±5

Add 5 to each side

x-5+5 = ±5 +5

x = 5 ±5