Mathematics Middle School

Lisa is 12 centimeters taller than her friend Ian. Ian is 16 centimeters taller than Jim. Every month, their heights increase by 2 centimeters. In 8 months, the sum of Ian's and Jim's heights will be 170 centimeters more than Lisa's height. How tall is Ian now? Let h be Ian'a height today in centimeters.

(h+16)+(_)+16=(_)+170

Ian is _ centimeters tall now.

Answers

Answer 1

Ian is 152 centimeters.

Related Questions

87,628 divided by 931

Answers

Your Answer Is...

94 R 114.

Glad I Could Help, And Good Luck!

My Brainly Name: AnonymousGiantsFan

94.12 unless you need more numbers

I need help wiith this math problem 6:1=12:_
i need to fill in the blank

Answers

The answer is: " 2 " .
__________________________________________________
Note: Given: 6:1::12:x ; Solve for "x" ;

Rewrite as:

6/1 = 12/x ;

6x = (12)*(1) ;

6x = 12 ;

Divide EACH SIDE of the equation by "6" ; to solve for "x" ;

6x / 6 = 12 / 6 ;

x = 2 .
_______________________

Answer:

6:1 = 12:2

Step-by-step explanation:

In the second statement, we see that 12 is double the amount of the original, meaning it had been multiplied by 2.

Apply the same rule to the second part of the ratio.

Equation: 1 x 2 = 2

Conclusion: 6:1 = 12:2

If a revolving restaurant can rotate 270° in 45 minutes, how long does it take for the restaurant to make a complete revolution?

Answers

the answer is one hour. 360-270=90 90 is a fourth of 360. 45 minutes is 3/4 of an hour so yeah

270/360 = 0.75 = 3/4 of a complete revolution

45 minutes = 3/4 of an hour

so it is doing 1/4 of a revolution every 1/4 hour

so it would take 1 hour to do a complete revolution

What is the communitive property of addition?

Answers

X+y or y+x
1+2 or 2+1

Final answer:

The commutative property of addition is a mathematical principle that states the sum of two numbers remains the same regardless of the order in which they are added; for example, 2 + 3 is the same as 3 + 2. It applies to both ordinary numbers and vector addition.

Explanation:

The commutative property of addition states that when two numbers are added, the sum is the same regardless of the order of the addends. In other words, if you have two numbers A and B, then A + B will equal B + A. This property is true for the addition of ordinary numbers, as well as for more complex structures like vectors.

For example, with ordinary numbers, adding 2 + 3 yields the same result as 3 + 2, which is 5 in both cases. The same property applies to vector addition, where the resultant vector from combining A + B is the same as B + A, confirming the commutative nature of this operation.

The commutative property is fundamental in mathematics as it provides flexibility in calculation, making it easier to solve problems and understand the underlying structure of mathematical systems.

Sally had 2/9 of a cup of pudding as a snack after school and she had 1/4 of a cup of pudding as dessert after dinner. Sally estimated that that she had about of a cup of pudding today. Is Sally's estimate reasonable?
A.
Yes, because and .
B.
No, because .
C.
Yes, because he added the numerators.
D.
No, because and .

Answers

Sally had about a half cup of pudding. If you make both numbers have the same denominator, you would get 8/36 and 9/36. Add them together, and you get 17/36, which is almost half.

Jeff is baking a cake. The recipe says that he has to mix 32 grams of vanilla powder to the flour. Jeff knows that 1 cup of that particular vanilla powder has a mass of 128 grams. He added two over three of a cup of vanilla powder to the flour. Should Jeff add more vanilla powder to make the exact recipe, or did he go over and by what amount?

Answers

Jeff has added 53.33 grams more vanilla powder than the recipe.

The recipe calls for 32 grams of vanilla powder, and we need to compare this to the amount Jeff used.

Jeff added two-thirds of a cup of vanilla powder to the flour. Since 1 cup of vanilla powder is 128 grams, two-thirds of that amount can be calculated as follows:

(2/3) × 128 grams = 85.33 grams (rounded to two decimal places).

Comparing this to the requested 32 grams, Jeff has added more than the recipe asks for:

85.33 grams - 32 grams = 53.33 grams.

In the table, the parts of strawberry concentrate and the parts of water to prepare a strawberry drink are given. There is a proportional relationship between these two quantities. Find the value of x.

Answers

I think 12. Lol I might be wrong maybe 9 can you list your answers choices?

Answer:

Step-by-step explanation:

its 12 D

what subset does 17/4573 belong to

Answers

The subset of rational numbers because it is written in the form a/b where a and b are integers ( not = 0)

what is the distance between 3/4 and 7/8

Answers

difference:

7/8-3/4

= 7/8 - 6/8
= 1/8

difference 1/8

because when you subtract a fraction from another, you'll have to make the denominator the same, then subtract the numerator to get the answer.

The distance between 3/4 and 7/8 is 11/8

What is an absolute value?

The absolute value of a number is the distance value from zero without considering the sign of a number. It is also represented as |x|, where x is any number.

Given:

The expressions are 3/4 and 7/8.

To find the distance:

Subtract the number with another number.

And take the absolute value of the number.

So,

distance = 7/8 - 3/4

Distance = (14 - 3)/8

Distance = 11/8

Therefore, 11/8 is the required distance.

To learn more about the absolute value;

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the answer to the question

Answers

8*2=16+1=17 over 2
2*4=8+3=11 over 4
17/2 times 11/4=34/4 times 11/4=374/4

The fifth-grade classes at Brookfield School used five identical buses to go on a field trip. •There were a total of 40 seats on each bus. •All of the seats on four buses were filled. •The fifth bus had 4/5 of the seats filled. •1/8 of all the passengers on the buses were adults. How many adults went on the field trip.

Answers

For the first 4 buses divide 40 by 8 to get the number of adults for those buses, it should be five.
For the bus with 4/5 of the seats filled you'll first need to find out how many seats 4/5 of the bus would amount to. To do this multiply 40 by 4/5, you should get 32. Then you divide 32 by 8 and you'll get 4.
The adults on the 5 buses would be 5 + 5 + 5 + 5 + 4 = 24.

What is 0.46 repeating as a fraction

Answers

Umm, assuming in this case it would be 0.4646464646464646...

Then you would just assign it a variable in the beginning:

x = 0.46464646...

Then multiply it by 100, to get:

100x = 46.46464646464646...

Now you just want to subtract x from 100x, or

46.464646464646464646... - 0.46464646464646...

Which would result in 99x = 46.

Now just divide 99 from both sides to get:

x = 46/99

So it would be 46/99.

I think.

how to solve the equation 9v = 8 + v

Answers

Here are some things you should know when solving algebraic equations.

If you add an expression to both sides of an equation, the resulting equation will have the same solution set as the original equation. In other words, they will be equivalent. This is true for all operations. As long both sides are treated the same, the equation will stay balanced.

You will also need to know how to combine like terms. But what are like terms to begin with? Like terms are defined as two terms having the same variable(s) (or lack thereof) and are raised to the same power. In mathematics, something raised to the first power stays the same. So, 5x and 10x are like terms because they both have the same variable and are raised to the first power. You don’t see the exponents because it doesn’t change the value of the terms.

To combine like terms, simplify add the coefficients and keep the common variable(s) and exponent.

The distributive property is another important rule you will need to understand.

The distributive property is used mostly for simplifying parentheses in expressions/equations.

For example, how would you get rid of the parentheses here?

6(x + 1)

If there wasn’t an unknown in between the parentheses, you could just add then multiply. That is what the distributive property solves. The distributive property states that a(b + c) = ab + ac

So, now we can simplify our expression.

6(x + 1) = 6x + 6

Now let's solve your equation.

9v = 8 + v
8v = 8 <-- Subtract v from each side
v = 1 <-- Divide both sides by 8

So, v is equal to 1.

In the expression 5^2, the 2 represents the

Answers

Exponent: amount of times a number is being multiplied

Hope this helps!

In the expression 5^2, the two represents the exponent and the 5 is the base. The exponent shows how many times you have to multiply the base. So 5^2 is equal to 5*5 which equals 25. Hope this helps! =)

what math do u do in 8th grade? as in algebra, geometry

Answers

The math curriculum is constantly evolving but when I was in 8th grade I took what is called Integrated Math 1 which would be algebra and geometry both combined, rn I'm a senior so that was a few years ago. It also depends on the school district I would assume. I live in California so, my school district is the San Diego Unified School District.

Solve -2.5n + 8.7 > 5.45.

A. n < 1.3
B. n > 1.3
C. n < -5.66
D. n > -5.66

Answers

A. n<1.3

-2.5n+8.7>5.45
subtract 8.7 from both sides
-2.5n>-3.25
divide -2.5 from both sides
(since you divided by a negative you flip the sign!!)
n<1.3

1. The pizza bot travels an average of 4 miles per hour. If he gets sent on a delivery to a house 1.5 miles away. How long will it take for the bot to make the delivery and return to the restraint.

Write in scientific notation

A. 401,570,000 miles
B. 403,440,000 miles
C. 782,690,000 miles
D. 1,669,490,000 miles
E. 1,202,100,000 miles

Please help

Answers

For the first question, since they travel 4 miles per hour, we want to figure out a common factor of 4 and 1.5 - 0.5 works. Since 4/0.5 is 8, we can divide 1 hour =60 minutes by 8 to get 60/8 minutes for 0.5 miles, and since 1.5/05=3, we can multiply 60/8 by 3 to get how many minutes it would take to get 1.5 miles, which is 180/8=22.5 minutes

For A, we have to write it in <number>.<numbers>*10^<number>. Since 4 is the first number, we write it as 4.01570000*10^<number>. Since there are 8 numbers after 4, we have 4.01570000*10^8. I challenge you to use this for the rest of your problems!

The pizza bot travels an average of 4 miles per hour. If he gets sent on a delivery to a house 1.5 miles away. The scientific notation is A. 401,570,000 miles.

How is the time taken for travel, distance traveled, and the average speed related?

We have this below shown relation between them

[tex]\text{Average speed} = \dfrac{\text{Distance traveled}}{\text{Total time taken to travel that distance}}\\\\or\\\\\text{Total time taken to travel that distance}= \dfrac{\text{Distance traveled}}{\text{Average speed} }[/tex]

The pizza bot travels an average of 4 miles per hour. If he gets sent on a delivery to a house 1.5 miles away.

The pizza bot is doing delivery which means it will go to the destination and return back.

So, the total distance traveled should be 2x of distance to the delivery target. Then the time needed for the bot to back to the restaurant would be:

Time needed = distance traveled / average velocity

= 2 x 1.5mi / 4mph

= 0.75 hour

= 45 minutes

For A, we have to write it in <number>.<numbers>*10^<number>.

Since 4 is the first number, we write it as 4.01570000 x 10^<number>. Since there are 8 numbers after 4, we have 4.01570000 x 10^8.

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There are 2 leaves along 3 in. of an ivy vine. There are 14 leaves along 15 in. of the same vine. Which equation models the number of leaves y along x in. of vine?

Answers

Doing a bit of guess and check, we can notice that the amount of leaves is one less than the number of inches of vine. Writing it out, we get x-1=y (the amount of inches-1=the amount of leaves)

Final answer:

The equation that describes the relationship between the number of leaves and the length of the vine in inches is y = x + 1. This is derived by calculating the slope of the line that fits the data points and the y-intercept.

Explanation:

The subject of this question is mathematics, specifically with a focus on linear relationships. To find an equation modeling the number of leaves y along x inches of vine, we can use the data given. Two points can be derived from this data: (2,3) and (14,15).

A line can be described by the equation y = mx + b, where m is the slope and b is the y-intercept. The slope of the line can be calculated as rise over run, or the change of y divided by the change of x. This gives us (14-2)/(15-3) = 12/12 = 1, so m = 1.

The y-intercept is the 'y' when 'x' equates to zero. By rearranging the equation to b = y - mx, and by substituting any given point and the slope, we can find b. For instance, using the point (2,3), b = 3 - (1*2) = 1. Therefore, the equation that models the number of leaves y along x inches of vine is y = x + 1.

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Two forms to write the number 304,001

Answers

304001 (number form)

300000 + 4000 + 1 (expanded form)

three hundred four thousand and one (word form)

hope this helps

what is the function for a table with a domain of 5, 10, 15, 20 and a range of 40, 80, 120, and 160

Answers

To find the range we need to find the vertex of the parabola which is at (-b/2a , y)

-b/2a would be 2/2 = 1 ... so find the y value at x = 1

12 - 2(1) - 15 = 1-17 = -16

So the vertex is at (1,-16)

Since the parabola opens upward from that point the minimum value of the range is y = -16

The range would include the point -16 so it is actually

R = [-16,infinity)

Find the value of x for which l is parallel to m. The diagram is not to scale.

a. 31

b. 62

c. 93

d. 149

Answers

Answer:

The answer would be A because x is the exact same length as the other side which is 31

Step-by-step explanation:

A magazine photographed is 24 cm long and 16 write each ratio

Answers

Since the length is 24 and the width is 16, we have the length to width ratio equal to 24/16. Since 8 goes into 24 3 times and into 16 2 times, we have 3/2. For width to length, we have 16/24=2/3 using the same reasoning as last time (except the numerator and denominator are flipped)

Final answer:

The requested ratios of the width to length and length to width of the magazine photograph are 2:3 and 3:2 respectively.

Explanation:

The question is asking for the ratios relating to the dimensions of the magazine photograph. In this case, the photo is 24 cm long and 16 cm wide. Therefore, you can derive various ratios from this.

The first is the ratio of width to length, which is 16 : 24. This can be simplified by finding the highest common factor of 16 and 24, which is 8. So divide both sides of the ratio by 8 to get 2 : 3.

Another ratio is the ratio of length to width, which is 24 : 16. Similarly, this can be simplified to a ratio of 3 : 2 by dividing both sides by 8.

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Find each amount

1/4 of 12 bottles of water =___bottles

2/3 of 24 bananas = ____ bananas

3/5 of $40 restaurant bill = $ ___

5/6 of 18 pencils = ___ pencils

Answers

3 bottles of water 16 bananas $24 and 15 pencils

Last week Alexandra was paid $56 for 7 hours of work. How much money does Alexandra's pay per hour?

Answers

The answer would be $8 per hour

The answer would be $8

you are choosing between two health clubs. club a offers membership for a fee of $19 plus a monthly fee of $21. club b offers membership for a fee of $13 plus a monthly fee of $22. after how many months will the total cost of each health club be the same? what will be the total cost for each club?

Answers

the price will be the same after 6 months and the total price will be $145.

I need -35+345 and I need to show work

Answers

-35 + 345

345 - 35 =

345
- 35
-----
310

hope this helps

PLEASE WILL GIVE YOU BRAINY IF YOURRIGHT!!!!!!!!!!!!
What is the value of d?

−5.5(d−2)=−12.1

Enter your answer in the box.

Answers

d=4.2

-5.5(d-2)=-12.1
distribute
-5.5d+11=-12.1
subtract 11 from both sides
-5.5d=-23.1
divide -5.5 on both sides
d=4.2

Answer:

4.2

Step-by-step explanation:

Someone please help. I'll mark you as brainliest :)

Answers

Scientific notation are super long numbers that are shortened by a decimal and an exponent. In my opinion, it's much more fun to write zeroes over and over, but nobody cares about my opinion, haha.
So how to make a number a scientific notation:
Step one: Identify the number. (ex. 0.000025)
Step two: Get rid of the zeroes for a second. We will get to that later. (25)
Step three: Put a decimal point between the two numbers. If there are three or more, but the decimal point before the last left number. (2.5)
Step four: Break! (math is boring at times)
Step five: Put the decimal into the scientific notation format. A scientific notation format is _._*10^_. The blanks represent the places that the numbers should go into. The power can be negative or positive, more on that later. For this equation, we will put the decimal before the times 10. (2.5*10^_)
Step six: Now we have to determine the value of the power. That is very easy. First, let’s go back to the decimal. 0.000025. Since we put the after decimal point between 2 and 5, We will count to the other initial decimal point. For this one, there are 5 decimal points. So that means the value of the power is 5. If the original number was positive, you would put the decimal point into the large number, count the number of well….numbers there are between the decimal point and the last number.
Step seven: Set it up! (2.5*10^5)Done!!!
For number two, 2x10^-4(sand)/1x10^-5(cell) = 2x10^1. SO this means the answer is 20 times.

Allison has 3 containers with 25 crayons in each.She also has 4 boxes of markers with 12 markers in each box.She gives 10 crayons to a friend. How many crayons and markers does Allison hace now?

Answers

she should have 113 total

25 x 3 is 75, so next, we subtract 10 leaving her with 65 crayons. 12 x 4 is 48, so she has 48 markers. The answer is 65 crayons and 48 markers.

Halle is hiking down into a canyon. She descends 3,000 ft in 1 3/4 hours. To the nearest foot, what number shows her descent per hour?

Answers

What we are asked to find out is speed per hour. To find speed, divide distance by time. Distance is 3000 ft and time is 1 3/4 hr. To make calculations easier, let us convert time into minutes. 1 hour is 60 minutes and 3/4 hour is 45 minutes. So total minutes is 105. Now let us divide 3000 by 105. We get 28.57 ft per minute. Now multiply this number by 60 to convert speed per minute into speed per hour. 28.57 * 60 = 1714 ft in 1 hour.

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