In a class there are x amount of students. z amounts of these students are ( y+1 ) years old. The rest of the students are y years old. Write an expression for the sum of all their ages. Simplify.

Answers

Answer 1

x = y + z

To simplify,

substitute z = y + 1

x = y + y + 1

x = 2y + 1


Related Questions

Which graph below shows the rule: output = 5 times input?

Answers

Given:

Output = 5 times input

To find:

The graph for the given statement.

Solution:

We know that, y-axis represents the output and x-axis represents the input.

Let y be the output and x be the input. Then the given statement can be written as

[tex]y=5x[/tex]

Here, the slope of the line is 5 because the value of [tex]m[/tex] is 5 on comparing the equation with [tex]y=mx+b[/tex].

It means the line is steeper because the vertical change is greater than the horizontal change.

Therefore, the correct option is A.

what is the area of this polygon? please help i’ll give brainliest

Answers

9514 1404 393

Answer:

  486√3 ft² ≈ 841.8 ft²

Step-by-step explanation:

The area of a regular hexagon with side length s is ...

  A = (3√3)/2s²

For the side length of 18 ft, the area is ...

  A = (3√3)/2(18 ft)² = 486√3 ft² ≈ 841.8 ft²

Domino's is having a sale where everything has a 10% discount. The regular price of a 2 topping pizza is $8. What is the discount price?

Answers

Answer:

7.20

Step-by-step explanation:

Write the expressions in standard form. SHOW ALL STEPS! The sum of 9t – 13 and the opposite of 9t.

Answers

Answer:

-13

Step-by-step explanation:

Opposite of 9t = -9t

Taking the sum of 9t - 13 and -9t

Sum = 9t - 13 + (-9t)

Sum = 9t - 13 - 9t

Sum = 9t-9t - 13

Sum  = -13

Hence the expression in standard form is -13

Melanie invested $8,600 in an account paying an interest rate of 2\tfrac{7}{8}2 8 7 ​ % compounded monthly. Oliver invested $8,600 in an account paying an interest rate of 2\tfrac{3}{4}2 4 3 ​ % compounded daily. After 10 years, how much more money would Melanie have in her account than Oliver, to the nearest dollar?

Answers

Answer:

$139

Step-by-step explanation:

The formula for compound interest =

A = P(1 + r/n)^nt

Where

P = Principal

r = Interest rate

n = Compounding frequency

t = time in years

A = Amount after t years

For Melanie

Melanie invested $8,600 in an account paying an interest rate of 2 7/8% compounded monthly.

Rate = 2 7/8% = 23/8% = 2.875%

Time = 10 years

n = monthly = 12

First, convert R percent to r a decimal

r = R/100

r = 2.875%/100

r = 0.02875 per year,

Then, solve our equation for A

A = P(1 + r/n)^nt

A = 8,600.00(1 + 0.02875/12)^(12)(10

A = 8,600.00(1 + 0.002395833)^(120)

A = $11,460.64

For Oliver

Oliver invested $8,600 in an account paying an interest rate of 2 3/4 ​ % compounded daily.

Rate = 2 3/4% = 11/4% = 2.75%

Time = 10 years

n = daily = 360 days

First, convert R percent to r a decimal

r = R/100

r = 1.375%/100

r = 0.01375 per year,

Then, solve our equation for A

First, convert R percent to r a decimal

r = R/100

r = 2.75%/100

r = 0.0275 per year,

Then, solve our equation for A

A = P(1 + r/n)^nt

A = 8,600.00(1 + 0.0275/360)^(360)(10)

A = 8,600.00(1 + 7.6389E-5)^(3600)

A = $11,322.05

After 10 years, how much more money would Melanie have in her account than Oliver, to the nearest dollar?

This is calculated as

$11,460.64 - $11,322.05

=$ 138.59

Approximately to the nearest dollar = $139

Answer:

139

Step-by-step explanation:

it’s right

A national park is a rectangle that is 33 miles wide and 56 miles long, How long is a
diagonal road through the park?

Answers

Answer:

this would be a right triangle with the legs being 8 miles and 6 miles. using the Pythagorean theorem, the hypotenuse would be 10 miles long. therefore, he would be walking a total of four miles less if he walked diagonally.

Step-by-step explanation:

Answer:23

Step-by-step explanation:

Help pls and thank you! :))

Answers

Answer:

a.

Step-by-step explanation:

4<x because the arrow is going to the right, meaning that the value of x is greater and since the circle is hollow, it is not equal to 4 so that's why is

4<x

Answer:

4 < x

Step-by-step explanation:

Open circle = < and >

Closed Circle = ≤ and ≥

X is greater than 4 because it is going to the right

plz help if its to small press on the image and zoom in

Answers

Thats a lot of work to do i jus need more points

Answer:

1. 5 in squared

2. 7 cm squared

3. 12 ft squared

4. 12 m squared

5. 24 yd squared

6. 15 mi squared.

Step-by-step explanation:

Hope this helps. You can search up how to find area too! Like how to find area of square or triangle or trapezoid!

which expression represents 2 more than the product 5 and 4.
A. (5+4)×2
B. (5×4)+2
C. 2+(5+4)
D.2×(5×4)​

Answers

B
the product is (5x4)
and adding 2 is two more than the product

Answer:

i think it's B. (5 x 4) + 2

Step-by-step explanation:

pls give brainly crown

and if i'm wrong i'm sooooo sorry


Rachel has scored 98, 83, and 68 on her previous three tests. What score does she need on her next test so that her average (mean) is 82?

Answers

Answer:Write the equation of this geometric sequence and find the value of the 9th term.

1/3, 1, 3, 9...

F(n)=

F(9)=

Step-by-step explanation:

You can put this solution on YOUR website!

The total of Jenny's 5 tests = 375

If she wants an average of 77 then

her 6 tests must total 6 x 77 = 462

462 - 375 = 87 which is what Jenny

must score on the sixth test for an

average of 77.

:-)

Answer:

79

Step-by-step explanation:

Sum of 4 test for Average of 82 must be 82 x 4 which is 328.

Subtract previous 3 scores from 328:

328 - (98 + 83 + 68)

328 - 249 = 79

She needs a 79

solve for x
in the box below but i dont know how

Answers

Answer:

x=8

Step-by-step explanation:

15/12 = 1.25

1.25x = 10

x = 8

Literally the first thing i saw was Xbox. lol :)

Answer:

8

Step-by-step explanation:

15/12=10/x

15x=120

x=120/15

x=8

Which equation represents a nonlinear function? y=−85x+19.4 y = − − 8 5 x + 19.4 y=−12x2−7 y = − − 1 2 x 2 − − 7 y=x4+x y = x 4 + x y=32−4x

Answers

Answer:

The answer is below

Step-by-step explanation:

The options are not clear. I would solve a similar question.

A linear function is a function in the form:

y = mx + b;  where y and x are variables, m is the slope and b is the y intercept.

From the options:

a) y = 3x³

Since the equation is not in the form of y = mx + b, hence it is not a linear function. It is a nonlinear function.

b) 3x + 2y = 10

2y = -3x + 10

The equation is in the form of y = mx + b, hence it is a linear function.

c) y = 15.3

The equation is in the form of y = mx + b, hence it is a linear function.

d) y = (1/4)x - 2

The equation is in the form of y = mx + b, hence it is a linear function.

An insect is standing next to a flower. The insect is 1 cm tall and makes a shadow of 0.5 cm. If the flower makes a 15-cm shadow, how tall is the flower?

Answers

Answer:

30 cm

Step-by-step explanation:

set up a proportion of insect height over its shadow equals flower height over its shadow, then cross-multiply

1/.5 = x/15

.5x = 15

x = 30

A bag contains all the letters in the word MATHEMATICS. You draw two letters, one at a time. What is the probability of drawing a T, replacing it, then drawing a C?

Answers

I think the answer might be DN

I need help with my math homework it’s overdue someone please please help me

Answers

Answer: 2.5833

Step-by-step explanation:

K = 1/4 or .25

3/5 = .6

3 - 0.25 / .6 = 2.5833

what is the positive solution to this equation?
4x²+12x=135

Answers

4x^2 + 12x - 135 =0
Using calculator mode 3 3 or formula
X= 9/2 or x = -15/2

Answer:

x = 4.5

Step-by-step explanation:

Solve for x by using the quadratic formula

x = -12 + or - [tex]\sqrt{144+2160}[/tex] / 8

so (-12 + 48) / 8 or (-12 - 48) / 8

so 36/8 or -60/8, they just want the positive solution so x = 4.5

Find the value or measure. Round answers to the nearest tenth, as needed.

Answers

Answer:

15

Step-by-step explanation:

10x - 23 + 10x - 23 + 106 = 360

20x + 60 = 360

20x = 300

x = 15

let me know i need asap thank you

Answers

Answer:

Step-by-step explanation:

It might be A or D I’m not for sure which one it is.

Given that x and y are positive integers and (x*2)+x(2^2)+(y*2^3)+(y*2^4)=42, what is the value of xy? PLEASE HELP!!!!!!

Note: Answer is not x=0, y=7 or y=0, x=7

Answers

Answer:

x = 3, y = 1

Step-by-step explanation:

If your question is this: 2x + 4x + 8y + 16y = 42

6x + 24y = 42

3x + 12y = 21

For x and y are positive integers, there is only 1 set of x = 3 and y = 1 is the solution  (because x = 7 and y = 0 is excluded)

check: 6 + 12 + 8 + 16 = 42

Diego took a 20 question quiz and earned a 75% on it.

Answers

Answer:

He got 5 questions wrong so he scored a 75%

Step-by-step explanation:

I hope this helps :)

Answer:

15 questions correct

Step-by-step explanation:

So you know that Diego took a 20 question quiz and got 75% on it so you have to find 75% of 20. 75% is also 3/4, so 3/4x20=60/4=15.  Therefore, he got 15 questions correct.

Hope this helps

what is 20 divided by 10 but to the power or 2​

Answers

4 is the answer for your question
0.2 or 1/5 if the power of 2 is on the 10

40 if the power of 2 is on the 20

please mark brainliest

find the area of the regular polygon

Answers

Answer:

i would recamend useing a ruler to help?

Step-by-step explanation:

mark me brainlyest i really need it

If it is 6 m from the center use the formula for a triangle (a=bh/2) then multiply by 5 because that is how many sides there Are

which is the graph of x^2/16+y^2/6=1

Answers

Answer: The graph ou are looking for is added in the picture.

Graph 1 shows the correct representation the solution of the system.

What is solution of system of linear equation?

The point that satisfies all of the equations in a system of linear equations is called the solution.

A system of linear equations could be solved through graphing as well as identifying the intersection point, or by solving the variables algebraically.

here, we have,

For the given question;

The system of linear equation are given as;

x + 2y ≤ 16  .......eq 1

4x + y > 6    ......eq 2

Consider equation 1;

x + 2y = 16

For x = 0; y = 8 , Point = (0, 8)

For y = 0, x = 16, Point = (16, 0)

As the inequality of the eq 1 is less than equal to, the shaded region will lies below the line with solid lines.

Consider equation 2;

4x + y = 6

For x = 0; y = 6 , Point = (0, 6)

For y = 0, x = 1.5, Point = (1.5, 0)

As the inequality of the eq 2 is greater than, the shaded region will lies above the line with doted lines.

Thus, graph 1 shows the correct representation the solution of the system.

To know more about the solution of system of linear equation, here

brainly.com/question/13054392

#SPJ3

complete question:

Which graph is the solution of the system

x+2y≤16

4x+y>6

1 2 3 4

I will give BRAINLIEST

Answers

Answer:

its loaded

Step-by-step explanation:

i cant see how thats possible at all

Marcus mowed 1/2 of his parents yard in 2/3 of an hour. At this same rate, how much of the yard will he mow in an hour ?

Answers

Answer:0.5

Step-by-step explanation:

1/2 devide by 3 = 0.16666666666

0.16666666666 times 3 = 0.5

Find the length of side x in the simplest radical form with a rational denominator.

Answers

Answer:

[tex]\sqrt{2}[/tex]

Step-by-step explanation:

We can use either angle, but I'm going to use the one on the bottom. So, in order to find x, we need to use tangent. One side we know is the adjacent, and the side we don't know is the opposite, therefore we need tangent. Here's the equation:

[tex]tan(45)=\frac{x}{\sqrt{2}}[/tex]

Obviously, we can't have a root in our denominator, so we need to get rid of it somehow. Here's how:

We multiply the denominator of the fraction by [tex]\sqrt{2}[/tex]. [tex]\sqrt{2}[/tex] multiplied by itself is simply 2. Try it! We also want to multiply the numerator by [tex]\sqrt{2}[/tex], but there isn't really a number we can use with that, so we'll just add it to the side. The equation you have now is:

[tex]tan(45)=\frac{x\sqrt{2} }{2}[/tex]

Let's try to work this out now. Since the denominator is 2, we have to multiply both sides by it to find x.

[tex]\frac{x\sqrt{2} }{2*2} =x\sqrt{2}[/tex]

[tex]tan(45)*2=2[/tex]

We can plug 2 in for the x in the numerator now:

[tex]\frac{2\sqrt{2} }{2}[/tex]

2 and 2 cancel out, so you get 1 in both the numerator and denominator. That's how we get our answer of [tex]x=\sqrt{2}[/tex]

Also, because this is a 45-45-90 triangle, you don't really have to do all that work. If it's a 45-45-90 triangle, both legs should be the same length. :)

can i get some help!!!

Answers

Answer:

i plus mo lng po iyan halimabawa yung number 7.4+8=12 po

Step-by-step explanation:

sana makatulong

The ages of the members of a volunteer group are shown below.
13, 14, 14, 14, 15, 15, 15, 16, 16, 21, 23
Which box and whisker plot best represents these data?

Answers

I think it’s D

I’m not 100% bc it’s been a while since I learned about those

Find the value of x degrees.

Answers

Answer:

X=25°

Step-by-step explanation:

[tex]x = \frac{1}{2} (t2 - 22) [/tex]

[tex] = \frac{1}{2} (50)[/tex]

[tex] = 25[/tex]

[tex]x = 25[/tex]

hope it helps u

pls help me


A movie theater sells snacks to 30% of its customers each day. On Saturday, 186 customers bought snacks. How many customers went to the theater on Saturday?


A. 242
B. 520
C. 558
D. 620​

Answers

Answer:

it would be A

Step-by-step explanation:

hopefully it helped

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