which expression is equivalent to -a*b
a.) a*(-b)
b.) b-a
c.) (-a)(-b)
d.) -a+b

Answer:

50 adult

86 child

Step-by-step explanation:

c + a =136

5c + 8a = 830

These are the two equations to use

c is the number of child tickets and a is the number of adult tickets

The total number of tickets is 136

The child tickets are 5 dollars apiece and the adult tickets are 8 dollars apiece and the total amount made is 830

I will use elimination

Multiply the first equation by -5

-5(c+a) = -5*136

-5c-5a =-680

Then add this to the second equation

-5c-5a =-680

5c +8a = 830

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

    3a  = 150

Divide each side by 3

3a/3 = 150/3

a = 50

Now we can find c

a+c = 136

50 + c = 136

Subtract 50 from each side

50+c-50 =136-50

c = 86

Answer:

child tickets: 86

adult tickets: 50

Step-by-step explanation:

C + A = 136

C = 136 - A

5C + 8A = 830

5(136 - A) + 8A = 830

680 - 5A + 8A = 830

3A = 150

A = 50

C = 136 - 50

C = 86

Answer:

3 shirts

Step-by-step explanation:

23 - 5 = 18

18 divided by 6 = 3

Square root 114 represents the point p.

Given,

The point P value in the given figure is between 10 and 11.

We need to find which value in the option is represented by point P.

Given options are :

Sqrt 11 = 3.31

Sqrt 21 = 4.58

Sqrt 114 = 10.67

Sqrt 121 = 11

We need to see which option gives a value between 10 and 11.

We have,

Sqrt 114 = 10.67.

We also know that point P lies between 10 and 11.

Sqrt 114 gives a value between 10 and 11.

Thus Sqrt 114 represents the point p.

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Answer:

the last one $119.25

Step-by-step explanation:

if you buy an item at $159 with 25% discount, you will pay 159-39.75 = 119.25.

Answer:

The first box.

Step-by-step explanation:

The minimum is 52, the max is 64, the median is 58.

The correct option is A.

Given,

The number of points scored for the first seven basketball games.

64,58,60,52,56,62,54

On arranging it in increasing order we get,

52,54,56,58,60,62,64

The above data is ungrouped data.

We know that, The median of ungrouped data is the middle term (when the total no. terms in data is odd) on arranging the data in ascending or descending order.

So here on arranging the above data, the middle term here is 58, hence the median here is 58.

The minimum score is 52 and the maximum score is 64.

On seeing the options we find that the option A is correct because here the minimum value is 52 and the maximum is 64 and median is exactly 58.

Hence, option A is correct.

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Answer:

16

Step-by-step explanation:

Look at the attached picture

Hope it will help you

The probability that dart lands on ring surrounding bull eye to the nearest tenth is: 4.9%

Area of ring surrounding bulleye :

Area = π×2² = 12.56 in²

Total area of dart board :

Area = 16² = 256

The probability of dart landing in ring surrounding bull eye :

Expressing as a percentage:

Answer:

90

Step-by-step explanation:

A semicircle is 1/2 of a circle

A circle is 360 degrees

1/2 is 180

We have 90 degrees already used on the left

180-90 = 90

b = 90 degrees

Answer:

90

Step-by-step explanation:

The whole thing equals 360

so have equals 180

and half of one 180 is 90 and you're trying to find that half of 180.

Answer:

C

Step-by-step explanation:

If we were to draw a horizontal line from the bottom of the ladder to the bottom of the tree and then draw a vertical line from the bottom of the tree to the top of the ladder, we'd get a right triangle with legs as the distance between the bottom of the tree and the bottom of the ladder and the height of the ladder, and the hypotenuse is the length.

Here, we know the hypotenuse is 10 feet and that the bottom of the ladder is 4 feet away from the bottom of the tree, so use the Pythagorean Theorem to find the height:

h = [tex]\sqrt{10^2-4^2} =\sqrt{84}[/tex] ≈ 9.2 feet

The answer is C.

Answer:

9.2 feet

Step-by-step explanation:

The ladder forms a right angle triangle with the ground and the tree

10² = 4² + h²

h² = 100 - 16

h² = 84

h = 9.16515139

Answer:

$54.75

Step-by-step explanation:

0.05 x 365 = 18.35

18.25 x 3 = 54.75

Answer:

54.75

Step-by-step explanation:

To find this answer we will first take our 3 years and turn them into days instead.

There are 365 days in a year, so, 365 x 3 = 1095 days

Next, take the 1095 days and multiply it by the number she is saving everyday

1095 x .05 = 54.75

Nicole will have saved 54.75 in three years.

Hope this helps! :)

Answer:

I think it's 15

Step-by-step explanation:

I'm just guessing

Answer:

3×[tex]10x^{-8}[/tex]

Step-by-step explanation:

0.00000003

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the  

10 . If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

Answer:

I believe its A

Step-by-step explanation:

You have to count the units to the subway to the house

You start by counting the squares from the subway to the right till you meet the same line as the house is located than you count up from there to the house

I got 13

Sorry if its wrong

Answer:

$1,200

Step-by-step explanation:

Last month was $10 x 100 = $1,000

This month was $10 x 30 = $300

This month loss was $10 x 10 = $100

$1,000 + $300 = $1,300 - $100 = $1,200

Answer:22

Step-by-step explanation:

I think so

the answer is b on the edg

The probability of drawing three green marbles consecutively without replacement from a bag containing different colored marbles is approximately 0.018 when calculated step by step.

The question is about calculating the probability of drawing three green marbles in a row from a bag that contains multiple colored marbles. To find this probability, we need to use the concept of probability without replacement.

First, calculate the probability of drawing one green marble. There are 5 green marbles out of a total of 16 (7 red + 4 blue + 5 green), so the probability is 5/16. When we draw a green marble, we do not replace it, so there are now 4 green marbles left out of 15 total marbles. The probability for the second draw is then 4/15. Lastly, for the third draw, there are 3 green marbles out of 14, making the probability 3/14.

To find the overall probability of all three events occurring, calculate the product of the individual probabilities: (5/16) * (4/15) * (3/14). This gives us 60/3360, which simplifies to 1/56. To the nearest thousandth, that is approximately 0.018.

So the probability that all three marbles drawn will be green, to the nearest thousandth, is 0.018.

Answer:

I did all the work and i believe the answer is 153

Step-by-step explanation:

9x5=45

12x9=108

108+45=153

Answer:

pretty sure u dont need the answer anymore, i hope you dont mind me getting some points

Step-by-step explanation:

Answer:

Part a - on the line where it says pay to the order of

Step-by-step explanation:

Answer:

Part A

Step-by-step explanation:

Answer:

[tex] - 9 \frac{31}{100} [/tex]

Step-by-step explanation:

[tex] - 9.31 \times 100 = - 931[/tex]

[tex] - 9 .31 = - \frac{931}{100} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = - 9 \frac{31}{100} [/tex]

Answer:

56.52 but you have to round so its 57

Step-by-step explanation:

You have to multiply 18 and pi so we will use 3.14 for pi. 18 times 3.14 will give you 56.52 but you have to round it so it will be 57. If the number is greater than 5 you round up but if it is less you round down.

The median of the afternoon (PM) group is 23.

To find the median of a set of numbers, we need to arrange them in ascending order and find the middle value.

Arranging the numbers in ascending order:

7, 9, 10, 12, 13, 15, 15, 16, 21, 23, 25, 26, 28, 30, 35, 35, 37, 38, 44, 55

There are 20 numbers in the dataset, so the middle value would be the 10th number when arranged in ascending order. In this case, the median of the afternoon (PM) group is 23.

Therefore, the median of the afternoon (PM) group is 23.

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Answer: 3.61km or √13

Step-by-step explanation:

Given Data:

Sides of hexagon = 2km each

Distance walked by Ama = 5km

Therefore;

Let Ama starting position be the origin.

With this She would travel along two edges and then go halfway along a third.

Her new x- coordinate would be

= 1 + 2 + 1/2 = 7/2

Because she travels a distance of 5km which translates to 2 and half side of the Hexagon

= 2*1/2

= 1km. On her x-coordinates

For her y-coordinate we use same principles as x-coordinates

= √3 + 0 - √3/2

= √3/2

Therefore her distance walked

= √ ( (7/2)^2 + (√ 3/2)^2 )

= √ ( 49/4 + 3/4 )

= √ 13

= 3.61km

Answer:

6.38298% or 6.4%

hope this helps

To calculate the percentage decrease from 47 to 44, the difference is divided by the original number and then multiplied by 100. The result is approximately a 6.4% decrease.

To calculate the percentage decrease of the number from 47 to 44, we use the following formula for percentage decrease:

Percentage decrease = ((Original Value - New Value) / Original Value) × 100%

In this case, the original value is 47 and the new value is 44. So the calculation would be:

Percentage decrease = ((47 - 44) / 47) × 100%

Percentage decrease = (3 / 47) × 100%

Percentage decrease = 0.0638 × 100%

Percentage decrease = 6.38%

To give the answer to the nearest tenth of a percent, we round 6.38% to 6.4%. So, the number 47 is decreased by about 6.4% to become 44.

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Answer:

50  because of corresponding angles, 2 parallel lines

Step-by-step explanation:

Answer:

Step-by-step explanation:

32 divide 4 = 8

Answer:

B- 32 divided by 4 = 8

Step-by-step explanation: