Mathematics High School

4.
One-third of Olivia's age, increased by 12, is equal to twice her age, decreased by 3. How old is Olivia?

Answers

Answer 1

Answer:

19?

Step-by-step explanation:

maybe i got it right

Related Questions

I need helppp!!!
−50=10s

Answers

Hey the answer is -0.2. You have to divide 10 by both sides to isolate the variable

SIMPLE FRACTIONS BUT I FORGOT

Answers

4/3 im not sure though oof

plzzzzzzzzzzz answerrrrrrrrrrrrrrrr i need it asap




Maxine spent 15 hours doing her homework last week. This week she spent 18 hours doing homework. She says that she spent 120% more time doing homework this week. Is she correct? Show your work to justify your decision.

Answers

Answer: 120

%

=

1.2

If Maxine is correct, then she spent  

1.2

times the hours she did homework than last week.

15

⋅

1.2

=

18.0

=

18

15 hours

⋅

1.2

=

18.0 hours

=

18 hours

This means that Maxine is correct.

HOPE THIS HELPS

I need help with square roots. I would really appreciate it if you help me understand them. Thank you! I'll give you 10 points and a five star review for a good answer.

Answers

Answer: 9/8

Step-by-step explanation:

The square root of this is 9/8 because when you square 9/8, you get 81/64, and when you square root it, you get 9/8.

The easiest way tho is knowing that when you square a number and square root the square, you get the same number, cuz the square root cancels the square. Does that make sense?

Anyways hope this helped!

Help! “Ms.Day drew a rectangle on the board with a width of 14 cm and a digo al length of 50 cm. Find the length of this rectangle in centimeters.”

Answers

Answer:

length=48cm

Step-by-step explanation:

a²+14²=50²

a²+196=2500

a²=2304

a=48

A ladder is 61 inches tall. How tall is it in feet and inches

Answers

Answer:

5'1

Step-by-step explanation:

Every 12 inches is a foot. 12 x 5 is 60. Plus 1. Is 61.

That mean's it's 5 feet 1 inch.

Answer:

5 feet 1 inch

Step-by-step explanation:

because 12 inches is equal to 1 foot and 12 times 5 is 60 so that 5 feet plus one inch is 5 foot 1 inch

Is (1, 2) a solution to this system of equations? 10x + 4y = 18 x + 9y = 19

Answers

Answer:

Yes

Step-by-step explanation:

The intersection point of 10x+4y=18 and x+9y=19 is (1,2) on a graph.

Use Phythagoras Theorem!!

the length pf a rectangle is 50 cm and its diagonal is 51 cm. work out the area of the rectangle, to the nearest square centimetre.​

Answers

a² + b² = c²

50² + 51² = c²

2500 + 2601 = c²

5101 = c²

√5101 ≈ 71.42 cm.

Answer: Area of the rectangle = 102.5 cm²  Round to 103 cm²

Step-by-step explanation:

The diagonal is the hypotenuse, c So subtract the square on the base (length) to find the altitude (height).

a² + b² = c²

a² + 50² = 51²

a² = 51² - 50²

a² = 2601 -2500

a² = 101  take the square root of both sides

a = √101

a = 10.04987562  Round to 10.05

Area = LW

Area = 50 × 10.05

Area = 102.5 cm²  Round to 103 cm²

Can anyone please help me solve this??

Answers

Answer: m > 9/5

Step by step

2 |−7m| + 8 > 4m + 26

= 2 × 7m + 8 > 4m + 26

= 14m + 8 > 4m + 26

= 14m > 4m + 26 − 8

= 14m > 4m + 18

= 10m > 18

= m > 18/10

= m > 9/5

A group of friends are going to see the newest action movie. The price of a ticket is $6.25. As a group, they spent $12 on refreshments. If they spent a total of $30.75 on tickets and refreshments, how many people went to the movies?

Which equation represents the scenario?


How many people went to the movies?

Answers

Answer:There would be 3 people at the movies.

Step-by-step explanation:

plzzzzz help plz i need this answer

Answers

Answer:

Step-by-step explanation:

3x - 4 = x + 4

2x - 4 = 4

2x = 8

x = 4

BC = 4 + 4 = 8

You give a delivery driver $15.50 for a pizza that costs $12.50. You tell the driver to keep the change as a tip. Is the tip more than or less than 20%?

Answers

Answer:

More than

Step-by-step explanation:

Answer:

more than 20%

Step-by-step explanation:

3.00/12.50 = .24

Meaning the tip was 24% ( more than 20% )

Put the numbers in descending order 25% 3/4 2.8x10

Answers

Answer:

3/4 25% 2.8x10

Step-by-step explanation:

factorise 2x^2 + 7x + 3

Answers

Answer:
=2x^2 +7x+3
Make pairs:
= 2x^2+6x+x+3
= 2x(x+3)+1(x+3)
=(x+3)(2x+1)

(-1,-4) and (3, -4) slope intercept equation

Answers

Answer: y = 0 - 4

Step-by-step explanation:

What is standard deviation for 110 120 120 130 140 140 150 160 160 170

Answers

Answer:

Standard Deviation (cont’d)Weights(pounds):110 120 130 140 150 150 160 170 180 190Deviation scores(x) forM = 150:-40 -30 -20 -10 0 0 10 20 30 40 Squared deviation scores(x2):1600 900 400 100 0 0 100 400 900 1600Sum of squared deviation scores:1600+900+400+100+0+0+100+400+900+1600 = 6000SD= √(6000/(N-1) = SD= √(6000/(9) = 25.82Standard Deviation Interpretation•Provides a “standard”—the SDindicates the average amount of deviation of scoresfrom the mean•Tells you how wrong, on average, the mean is•An SDprovides valuable information when the distribution is normal:–There are approximately three SDsabove and below the meanin a normal distribution•In a normal distribution, a fixed percentage of cases lie within certain distances from themeanSDs and Individual Scores•A person who scores one SDbelow the mean has a higher score than 16% of the cases (2.3% + 13.6%)•A person who scores one SDabove the mean has a higher score than 84% of the cases (50.0% + 34.1%)Example: Midterm marks:

932.48 divided by 2?

Answers

Answer:

The answer would be 466.24

466.24 hope this helps you

Which graph represents a function?

Answers

Answer:

a

Step-by-step explanation:

Answer:

A.

Step-by-step explanation:

B, C, and D, have straight up and down lines, which is not a function.

What is the value of x? (-8x = 24) - 6x +18 - 122

Enter your answer in the box X= ​

Answers

Answer:

the value of x in x? (-8x = 24) - 6x +18 - 122 is x=40

Hope you do good :)

Which of the following is the product (3x - 5) and (3x + 5)?

Answers

Answer:

the answer is

....9x^2 - 25

Derrick's Dog Sitting and Darlene's Dog Sitting are competing for new business. Derrick's Dog Sitting
charges $16 plus $7 per hour. Darlene's Dog Sitting charges $20 plus $5 per hour.
Part 1 out of 2
Complete and solve the equation that can be solved to find the number of hours for which the total cost
will be the same for the two services. In your equation, use x to represent the number of hours of dog
sitting
The equation is
The total cost will be the same for the two services at
hours.

Answers

Answer: both services will cost the same if it is for 3 hours service.

Step-by-step explanation: Hope this helps.

Define x: Let x be the number of hours

Derrick Dogs sitting:

Fixed charged=$12

Hourly change=$5

Total charge=12+5x

Darlene dog sitting:

Fixed charged=$18

Hourly change=$3

Total charge= 18+3x

Find the total number of hours so that both cost are the same:

12 + 5x = 18 + 3x

5x - 3x = 18 - 12

2x = 6

x = 3

ANSWER: both services will cost the same if it is for 3 hours service

Answer:

3 hours hon

Step-by-step explanation:

The wholesale cost of a pair of PUMA sneakers is $28. Academy Sporting Goods sells the sneaker for 74.99. Rounded to the nearest 10th of a percent, which choice best represents the markup rate?

Question 4 options:

37.8%


.6%


167.8%


62.7%

I WILL GIVE BRAINLIST IF YOU PUT THE RIGHT ANSWER BUT IF U DONT KNOW IT DO NO ANSWER OR I WILL REPORT U

Answers

Answer:

167.8

Step-by-step explanation:

Answer: 167.8

Step-by-step explanation:

80pts
1 point
A polygon undergoes a combined transformation of T3, 2) (Ro, 90'). The vertex (5. 2) of the polygon maps to what final image?
O (-4,8)
O (-2,5)
(1,7)
O (5,-3)

Answers

Answer:

Do you have the picture of the assignment?

GUYS PLEASE HELP I MARK BRAINLIEST 5 STARS IM SORRY ABOUT THE POINTS I ONLY HAVE 13 Andre’s school orders some new supplies for the chemistry lab. The online store shows a pack of 10 test tubes costs $4 less than a set of nested beakers. In order to fully equip the lab, the school orders 12 sets of beakers and 8 packs of test tubes.

Write an equation that shows the cost of a pack of test tubes, t, in terms of the cost of a set of beakers, b.
t=b-4

The school office receives a bill for the supplies in the amount of $348. Write an equation with t and b that describes this situation.
b+t=348

Since t is in terms of b from the first equation, this expression can be substituted into the second equation where t appears. Write an equation that shows this substitution.
b+(b-4)=348

b=176

How much did the school pay for a set of beakers? $____

How much did the school pay for a pack of test tubes? $____

Answers

Answer:

this is not originally by me

Step-by-step explanation:

10t = b - 4

12b+8t = $348

This is a system of equations. I’ll be solving through substitution.

In the first equation. solving for b (the easier variable to isolate) gives you:

b = 10t + 4

Substitute this into the second equation:

12(10t+4) +8t = 348

120t+48+8t = 348

128t = 300

t = 2.34375 —> round it to the nearest cent to get 2.34 dollars

b = 10t+4

b = 10(2.34)+4

b = 27.4 dollars

What percentage of a day is 4 hours?​

Answers

Answer:

1/6%

Step-by-step explanation:

i belive thats the answer hope it helps

so i’m trying to figure out the slope of the line shown on the coordinate plane

Answers

Answer:

2

Step-by-step explanation:

pick two points that the line crosses through and write down the coordinates

eg. (3,3) and (2,1)

change in y/change in x

3-1/3-2

2/1

2

hope that helps :)

Answer:

2

Step-by-step explanation:

Write an inequality that is represented by the graph.

Answers

Answer:

ff

Step-by-step explanation:

what’s the slope??
thanks if u help :)

Answers

Answer:

1/2

Step-by-step explanation:

1/2

Answer:

1/2 or The rise is 1 and the run is 2.

4
-1
-2
-3
5
The equation of the line in this graph is y=
I
x+

Answers

Answer:

The answer would be:

thec correct equation of the line is : y = 3 + 1.5x

tep-by-step explanation:

one sixth multiplied by 42​

Answers

Answer:

6/42 = 1/7

Step-by-step explanation:

1/6 x 42/1

1 x 42 = 42

6 x 1 = 6

simplify to 1/7 (6 divided by 6 = 1, 42 divided by 6= 7)

hope this helps :)

Answer:

7

Step-by-step explanation:

1/6 x 42 = 7

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