Mathematics High School

The algebraic expression that represents twice the sum of some number and 3 is?


n + 2(3)


2(n + 3)


2 + n + 3


2n + 3

Answers

Answer 1

Answer:

2(n+3)

Step-by-step explanation:

The sum to 3 = n+3

That sum doubled (~twice) = 2(n+3)

Answer 2

Answer:

2(n+3)

Step-by-step explanation:

Let's look at the statement:

'twice the sum of some number and 3'

Twice means 2 multiplied by something.

What is that something? It is the sum of some number and 3.

Let's replace the some number with variable n.

So it becomes the sum of n and 3, which translates to n+3.

So you put the two parts together:

2 multiplied by (n+3), rewritten as 2(n+3).

Related Questions

Help please just this whoever answers correctly I will mark brainliest

3. A library charges a late fee of $3.50 plus $0.15 per day that a book is returned late.

B. Make a table to find if the total fee if a book is 10,15,20, or 25 days late. Then graph the ordered pairs.​

Answers

Answer:

10: (10×0.15)+3.50:$5

15: (15×0.15)+3.50:$5.75

20:(20×0.15)+3.50: $6.50

25:(25×0.15)+3.50: $7.25

Answer:

10 days: $5 fee

15 days: $5.75 fee

20 days: $6.5 fee

25 days: $7.25 fee

Step-by-step explanation:

General Formula

Total fee = 3.5 + days late x 0.15

------

Total fee for 10 days = 3.5 + 10*0.15 = 5

Total fee for 15 days = 3.5 + 15 * 0.15 = 5.75

Total fee for 20 days = 3.5 + 20 * 0.15 = 6.5

coordinates for the answers:

Since days is the x axis and y axis is the fee then

(10, 5)

(15, 5.75)

(20, 6.5)

(25, 7.25)

Which property does Aiden use for his first step?

Answers

Answer:

distributive property of multiplication!

please mark me as brainliest!!!

A car rental company charges, y, for x, days. Days 3 4 5 6
Total Cost ($) $55.50 $74.00 $92.50 $111
Write an equation in the form of y=kx. Explain what the constant rate of change means in this context.

Answers

The equation of the car rental company in the form y = kx is; y = 18.50x

The equation y = kx is such that;

y = dependent variable

x = independent variable

k = constant of proportionality.

In essence; to determine the constant of proportionality, k in this case;

k = y/x

Since the company charges, $55.50 for 3 days; we have;

By evaluation k = $55.50/3

k = 18.50.

A constant rate of change means the variation in the dependent variable as dependent on the independent variable is constant

Read more:

https://brainly.com/question/19012756

What is (-2) power 35?

Answers

Answer: − 34359738368

i think of a number times it by 2 and minus 2 my answer is nine

Answers

Answer:

5.5

Step-by-step explanation:

5.5 times 2 equals 11 minus 2 equals 9

5.5

Step-by-step explanation:

help plz I need to solve this ​

Answers

Answer:

2,5

Step-by-step explanation:

Answer:

Slope = 2.5

This means that 2.5 mm of rain falls every 1 hour

Step-by-step explanation:

Slope if the line is y2-y1/x2-x1

so 10-5/4-2

5/2

2.5 mm/hr

solve pls brainliest

Answers

Answer:

b

Step-by-step explanation:

I Think B is the right answer

15 points. PLZ HELP!!! Slope intercept Form. Will mark Brainliest!!1

Answers

Y=16x
The b is 0 so no need to put it in the equation.
The slope is 16/1 which is 16
y= 4x , y intercept is 0 because it crosses the y-axis at 0,0

True or false: The relationship among the triple constraint variables is such that if any one changes, at least oneother is likely to be affected.

Answers

We want to see if the statement "The relationship among the triple constraint variables is such that if any one changes, at least one other is likely to be affected." is true or false. This is true.

A relationship among the triple constraint variables is written as:

y = f(x, z)

Where the 3 variables are x, y, and z and represent cost, scope, and time.

This means that if either x or z changes, also does y.

And we always can rewrite the relationship in two other forms:

x = g(z, y)

z = h(x, y)

Then we can see that always that one variable changes, at least one other variable changes in response, then the statement is true.

If you want to learn more, you can read:

https://brainly.com/question/25368922

If ; gallon of paint covers ; of a wall, then how many
quarts of paint are needed for the entire wall?

Answers

Answer:

how many of a wall a galloon of paint cover?

Step-by-step explanation:

The principal is equally distributing 6
4
5
cakes on 2 tables for a school party. How many cakes are on each table?

Answers

645/2=322.5 cakes on each table

hope this helps!

Find the perimeter. Simplify your answer.

Answers

30s-18 is the answer jus add all the sides together/ add the like terms then solve it

Janet raised $90 of her $60 goal. What percent of her original goal did Janet raise?

Answers

Answer:

50% of Her Original goal

Step-by-step explanation:

I got the answer of 66 percent not sure if it’s correct tho

How to simplify -7 + 3 - 20

Answers

Answer:

-24

Step-by-step explanation:

-7 +3 is -4

-4+-20 is -24

-7 + 3 - 20

= -4 - 20

= -4 + -20

= -24

______

Hope it helps ⚜

Find the value of z.
7
Х
3
Z
Z =✓[?

Answers

Applying the leg rule, the value of z in the right triangle given is: √30 units.

What is the Leg Rule?

The leg rule states that, hypotenuse/leg = leg/part.

Given the following:

Leg = z unitsPart = 3 unitsHypotenuse = 3 + 7 = 10 units

Plug in the values into the leg rule:

10/z = z/3

z² = (10)(3)

z² = 30

z = √30 units

Learn more about the leg rule on:

https://brainly.com/question/25016594

#SPJ1




1) State the area of the given trapezoid.
5m
5m
8m
4m
A) 20 square meters
B) 26 square meters
C) 32 square meters
D) 40 square meters

Answers

Answer:

The answer would be 26

Step-by-step explanation:

First I divided the shape to make a rectangle and a right  angle triangle, then i calculated the shape of the rectangle which came out to be 20. After that I calculated the area of the right angle triangle which is 6. So The answer would be 6 + 20 = 26

What is the greatest common factor of 42 and 48?

Answers

Answer:

The greatest common factor is 6

Step-by-step explanation:

There are 4 common factors of 42 and 48, that are 1, 2, 3, and 6. Therefore, the greatest common factor of 42 and 48 is 6.

hope this helps

HELPMEPLZZ.

Figure ABCD is transformed to obtain figure A'B'CD Part A Write the sequence of transformations that changes figure ABCD to figure A'B'C'D' Explain your answer and write the coordinates of the figure obtained after each transformation. (6 points) Part B: Are the two figures congruent? Explain your answer (4 points)​

Answers

Answer: yes because they both go to the 0 and has the same shape.

Step-by-step explanation: yes

Round the answer to the nearest cent.
5 1/2% tax on $20 is $

Answers

Answer:

goodmorning b

Step-by-step explanation:

identify an equation in point-slope form for the line perpendicular to y = 2x + 8 that passes through (-3,9)​

Answers

Answer:

y - 9 = m(x + 3)

Step-by-step explanation:

Given a line whose slope is m, the slope of a new line that is perpendicular to the given line is the negative reciprocal of m:  -1/m

Given y = 2x + 8, we see that the slope is 2 and figure that the negative reciprocal of that is -1/2.  This is the slope of the desired perpendicular line.

We can write the equation of this perpendicular line most easily by using the point-slope form y - k = m(x - h), where (h, k) represents the point:

y - 9 = m(x + 3)

which best describes the relationship between the 125 angle and angle a

Answers

Answer:

They are same side interior angles. Angle A measures 55°.

Step-by-step explanation:

Express 8.4km/min in km/hr

Please answer quickly i have exam tomorrow!!!

Answers

Answer:

540km/hr

Step-by-step explanation:

8.4km/min×60min/km

=8.4/60

=540km/hr

plzzzz help me!!!



Plz don't steal my points or add a link​

Answers

Answer: What do you mean? if you till me i can help you

Step-by-step explanation:

What is the time difference between usa and england?

Answers

Answer:

-5 hours

Step-by-step explanation:

Four-Fifths of p added to the product of 6 and h as a expression

Answers

Answer:

4p/5 + 6h

Step-by-step explanation:

this is the answer

Paetan pays $10.73 for 3.7 pounds of cherries. What is the cost for 1 pound of cherries?

Answers

Answer:

$2.9

Step-by-step explanation:

-5/3 + 2 1/3
please help me

Answers

Answer:

Well you can convert the mixed fraction into an improper one

-5/3 + 7/3

Which is really -5 + 7 and you’d get 2

so 2/3

The answer: 2/3

I hope this helped have a good rest of ur day!

When using re-grouping to solve 25 x 45, what are the four problems that would be calculated to find the final answer?
A.20 x 40; 5 x 40; 20 x 5; 5 x 5
B.20 x 20; 40 x 40; 20 x 5; 5 x 5
C.20 x 40; 20 x 5; 40 x 5
D.20 x 40; 5 x 20; 20 x 5; 5 x 5

Answers

Answer:

It is number 1

Step-by-step explanation:

I tried it.

2 ÷3 × 6 whole number 3 on 4, into bracket 2 whole number 4 on 15 - 1 whole number 2 on 3

Answers

Answer:

the question is not clear

Step-by-step explanation:

wdym by this 2 ÷3 × 6 whole number 3 on 4, into bracket 2 whole number 4 on 15 - 1 whole number 2 on 3

2. Kendall skated around the park 15 times in 25 minutes. If Kendall continues to skate at the same speed, how many times will he skate around the park in 48 minutes?​

Answers

Answer:

28.8 rounds.

Step-by-step explanation:

Solve this using ratio

---------

15 rounds / 25 minutes

---------

Find out how many rounds per minutes: 25/15

1 round / (5/3) minutes

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

48 divided by (5/3) to get rounds now.

---> (48*3)/5 ---> 144/5 ---> 28.8

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

28.8 rounds. So she only completed 28 full rounds as she didn't manage to complete 29 just yet.

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