Mathematics Middle School

Jack's father is 3 times older than jack. 5 years ago the sum of their ages was 34. How old is jack now?
PLS HELP ASAP!!

Answers

Answer 1

Answer:

11 years old

Step-by-step explanation:

Answer 2

Answer:

So, the present age of Jack is 11 years.

Step-by-step explanation:

x-5+3x-5=34

4x-10=34

4x=44

x=11

Related Questions

I really need help mad for it to be correct!!!!

Answers

Answer:

0.2

Step-by-step explanation:

I hope it helps, I did the math!

Hello again davetriona12! I can help you.

We have 2.99, 3.19, 3.39, and 3.79

In order to solve this, we need to find out how much is being added every time. To do this, we will subtract 2.99 from 3.19 which gives us 0.20

So each time, 0.20 gets added.

Now that we have that information, we are ready to find the blanks.

For the first blank, we will subtract 2.99 - 0.20 which will give you 2.79

For the second blank, we will add 0.20 to 3.39 which will give you 3.59

Hope this helps you!

#LearnWithBrainly

https://brainly.com/question/21679065

I need some help! I can’t figure this out, nor do I understand it. My question is:

The locations of some buildings at the county fair are shown on the coordinate plane provided. Three food booths will be added so that they are closer to the Flowers building than to the other buildings.
Describe three locations for the food booths using ordered pairs.

Answers

Answer:

Three locations for the food booth would be ( 2,3)- fowls . ( 3 , 4 )- textiles . ( 0 , 2 )- flowers . ( 4 , 3 ) live stock.

Step-by-step explanation:

please dont be  mad if this is wrong,   i hope this helps! :)    

Please help me I just need the ticket price.

Answers

$167.... That an expensive tickets

Anita incorrectly wrote the equation z = w – 18 to describe the pattern in the table.
Choose the best description of Anita’s error.

Answers

D Anita only compared the values in the row for z.

The best description for Anita's error is z = 9w.

What is an equation?

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

Example:

2x + 4 = 9 is an expression.

We have,

From the table,

The pattern that describes the table.

Let the pattern be z = mw + c

Now,

(3, 27) and (5, 45)

m = (45 - 27) / (5 - 3) = 18/2 = 9

Now,

(3, 27) = (w, z)

27 = 9 x 3 + c

27 - 27 = c

c = 0

Now,

The pattern for the table.

z = 9w

Thus,

The patter for the table is z = 9w.

Learn more about equations here:

https://brainly.com/question/17194269

#SPJ2

pls answer the picture

Answers

Answer:

8 because if you take a row away from the total, you have 8, and that's how many are hidden

Step-by-step explanation:

Answer: there are eight blocks hidden in the cup.

Step-by-step explanation:

seeing that we don’t know how many blox are in the cup The cup would be a variable in this situation.

x + 4 = 12 cubes

to find your answer you would’ve solve for X, a.k.a. the cup.

x + 4 = 12 cubes

first you would do the inverse operation of addition so instead of adding four  you subtract four from four, so that it cancels out.  Whatever you do to one side you have to do to the other side so you would have to subtract 4 from The previous 12 cubes.

X = 12 - 4

and your final answer would be 8 cubes

x = 8

there are eight blocks/cubes hidden in the cup

Explain how each part of the equation 9=3(x+2) is represented for 9

Answers

Answer:

because there's an equals sign and if you want the answer x=1

Step-by-step explanation:

because 9=3x+6 cancel out 6, 3=3x divided on both sides, 1=x

Answer:

x=1

Step-by-step explanation:

Pls hurry 98 points!!!!

Answers

Answer:

28x + 8y + 2

Step-by-step explanation:

multiply all numbers by -2 = -6x - 24y +10 +34x +32y - 8, then combine like terms to get 28x, 8y, and 2.

equation = 28x + 8y + 2.

Hope it helps!!!! :)))

If it helps can I have brainliest?

Answer:

C.

Step-by-step explanation:

Please help!!!!!!!!????!!

Answers

Answer:

A. 4 m

Step-by-step explanation:

Cylinder volume:

V = πr²h

Substitute values and solve for r:

96π = πr²(6)16 = r²r = √16r = 4 m
It’s hard to keep to keep my cool

Room temperature ranges from 20°C to 25°C. Find the range of room temperature in °F. Use the formula F – 32 = 1.8C to convert from the Celsius scale to the Fahrenheit scale.

Answers

Answer:

68 to 77

Step-by-step explanation:

I MULTIPLIED as ur formula

68°F to 77°F i solved ising your formula!

Help is needed thank

Answers

Answer:

the answer for this question is C because if it says greater or equal to -5 then it would be D or it it says it is smaller or equals to -5 to it would be B or if it says it is smaller than -5 then it would be A

Answer: C

Step-by-step explanation: If the dot is filled in that means it is equal to. and it is telling you where it is starting at.

Plzzz help hurry!!!!!!

Answers

Answer:

(1,4.5)

Step-by-step explanation:

the y is easy you just look at it. the x is a bit trickier but if you look at it and take an educated guess it looks like its halfway through it.

It’s (4.5, 1) because 4.5 is the x axis

Help plz :((
I'll give brainliest

Answers

Answer:

A. The source of energy for the water cycle is the sun.

B. Condensation would be the process that changes the water vapor into water droplets that form the cloud.

C. Arrow X would be runoff

The equation y = 3.5x – 210 represents the profit made by a manufacturer that sells products for $3.50 each, where y is the project and x is the number of units sold. What is the profit in dollars when 80 units are sold?

Answers

Answer:

Jiwon is that u? Oh my god

A store bought a camera for $300 and sold it for $714. What was the markup percentage?

Answers

Answer:The markup is 40% of the $25 cost, so the markup is:

(0.40)(25) = 10

Then the selling price, being the cost plus markup, is:

25 + 10 = 35

The item sold for $35.

Step-by-step explanation:

A submarine starts at 0 units and has groups of 3 floats and groups of 4 anchors attached.
Using these groups of floats and anchors, write as many different expressions as you can that would make the submarine's final position -5 units.
write three expressions

Answers

Answer:

-12

Step-by-step explanation:

The three equivalent expressions of the final position are:

-(5)(3) - (2)(4), -(5)(3) + (-2)(4) and -(5)(3) + (2)(-4)

From the question,

Each float takes a step of 5 unitsEach group takes a step of 2 units

So, the final position of the submarine is:

Final = -(5)(3) - (2)(4)

The minus "-" sign implies that the submarine moves downwards i.e. it sinks

The equivalent expressions of the final position are:

-(5)(3) - (2)(4), -(5)(3) + (-2)(4) and -(5)(3) + (2)(-4)

Read more about equivalent expressions at:

https://brainly.com/question/2972832

please help meeee!!!!!!!!!1

Answers

D

is that what you answered or was that the answer

I'LL GIVE BRAINLIEST:

Answers

Answer:

B

Step-by-step explanation:

Help ;-;
Mark's bill for lunch at a restaurant is $14.50, and he wants to leave a 18% tip.
How much should he leave for the tip?

A. $2.18

B. $2.61

C. $11.60

D. $261.00

Answers

It’s B because you divide 18 percent from 14.50 dollars.
It would be B. Because 14.50 times .18 equals 2.61. Just put a decimal on it and move it to the right twice and multiply that by 14.50. If you need a better explanation you can message me! Hope this helps!:)

The letters of the alphabet are written on cards and placed in a brown paper bag. What is the probability of drawing a vowel, NOT replacing it, and then drawing a Z?

Answers

Answer:

0.1%

Step-by-step explanation:

Good Luck

Which statement describes the relationships between x and y in these two equations?

y = 3x

y = x + 3




In y = 3x, the value of y is 3 times the value of x, and in y = x + 3, the value of y is 3 more than the value of x.

In y = 3x, the value of y is 3 more than the value of x, and in y = x + 3, the value of y is 3 times the value of x.

In y = 3x and y = x + 3, the value of y is 3 more than the value of x.

In y = 3x and y = x + 3, the value of y is 3 times more than the value of x.

Answers

Answer:

A

Step-by-step explanation:

A i think so no sure

What is the sum (2/5 x + 5/8) + (1/5 x - 1/4)?

Answers

Answer:

3x+3/8

Step-by-step explanation:

see screenshot

The height of a building is proportional to the number of floors. The figure shows the height of a building with floors. Complete parts a and b. a. Write the ratio of height of the building to the number of floors.​ Then, find the unit​ rate, and explain what it means in this situation. Fill in the correct answers to complete the sentences. The ratio of height of the building to the number of floors is . The unit rate is . This means that each floor of the building is ft high.

Answers

Answer:

1:13

1 floor per 13 feet.

It means how many floors are to be allocated in a certain area of space.

Step-by-step explanation:

Answer:


Meaning: Each floor of the buiding has a height of 15 feet.
Step-by-step explanation:
The missing figure is attached.
By definition, the ratios are used to compare two or more things or quantities.
In this case you must write the ratio of height of the building to the number of floors it has.
You can observe in the figure that the building has a height of 135 feet, and, since it has 9 floors, you can write the following ratio:

Therefore, dividing the numerator by the denominator, you get that the unit rate is:

This means that each floor of the buiding has a height of 15 feet

I know it's wrong

A submarine starts at 0 units and has groups of 3 floats and groups of 4 anchors attached. Which expression would make the submarine sink the lowest?
A : -(5)(3)+(2)(-4)
B :(5)(3)-(2)(-4)
C: -(5)(3)-(2)(-4)
D: (2)(3)+(5)(-4)
E: -(2)(3)-(5)(-4)
What will its final position be?

Answers

Answer:

The lowest point would be A.

Step-by-step explanation:

A. has the value of -23

A teacher surveyed her class after they had taken a vocabulary test. Eighteen of the students claimed they had studied at least one hour for the test. The remaining twelve students admitted that they had not studied for the test at all. The test results (expressed as a percent) for the two groups are shown below.


Studied: 88, 100, 94, 79, 92, 100, 95, 83, 89, 99, 100, 91, 89, 95, 100, 93, 96, 84

Did Not Study: 82, 72, 45, 91, 58, 83, 65, 87, 90, 77, 73, 89

Calculate the range and interquartile range for each set of data.
Using complete sentences, compare the data sets based on your results in part A.

Answers

You add all of the numbers and the divid by the amount of number for example 88+ ......... = 1667 and then you divid by 18 because that is how many numbers there are equaling 92.61% so 92.61% STUDIED

Answer:

horrible scores!

Step-by-step explanation:

.........................................................................

Answers

D and E is correct, I hope you get a good grade!

A _____________ ratio in any proportional relationship.

Answers

Answer:

a proportional relationship is look at the different values that the variables take on when one variable is one value, and then what is the And then take the ratio between them. and you see y to x, or y divided by x-- the ratio of y to x

If all the ratios are equal, then the relationship is proportional. If all the ratios are not equal, then the relationship is not proportional.

Ratios are proportional if they represent the same relationship. One way to see if two ratios are proportional is to write them as fractions and then reduce them. If the reduced fractions are the same, your ratios are proportional.

We have to get ratio of the two quantities for all the given values. If all the ratios are equal, then the relationship is proportional. If all the ratios are not equal, then the relationship is not proportional.

Writing an Equation to Represent a Proportional Relationship. An expression of equality of ratios is called a proportion. The proportion expressing the equality of the ratios A:B and C:D is written A:B = C:D or A:B::C:D. A is to B as C is to D.

Step-by-step explanation:

Proportions are the same ratios written in different forms. A proportional relationship is states that they are the same. For example, 1/2 and 6/12 have a proportional relationship, which means they are the same.

Please provide explanation IF you can. Very Confused!!

Answers

Really simple the circle has specific dividing corners that will add on to the 26 add all those to get your inches

Answer:

41.63

Step-by-step explanation:

Circumference = 2pi(r)

26.5 / 2 = 13.25 (radius)

2pi(13.25) = 83.25 (circumference of the full circle)

83.25 / 2 = 41.625 or 41.63

For what value of b, a polynomial in standard form, equivalent to the product of
(X^2-10x+6)(2x+b):

a. Does not contain x^2
b. Has equal coefficients for x^3 and for x

Answers

B the answer is Has equal coefficients for x^3 and for x
i think the answer is b

Help plz :((
I'll give brainliest

Answers

For A. the muddy water will slowly begin to decrease because it's been left out in the sun, some of the water will begin to evaporate.

(I don't know about B, or C, but I tried my best on A.)

Make sure to put in your own words. :)

what is the y-intercept (1, 5)

Answers

I think it’s 2.5 Cuzz yes
The 5 because (x,y) is how coordinates are written
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