Seven more than three times a number is thirty-one. Write an equation
and solve for the unknown number.

Answers

Answer 1

Answer:

As an equation, (we'll use x as the variable), that word problem is 3x+7=31.

To solve we'd subtract 7 from both sides to isolate 3x, which gives us 3x=24. Now, to isolate x(unknown number) we would divide both sides by 3. When you divide both sides by 3, you'd get x=8.


Related Questions

Help plssss with my exit ticket

Answers

Answer: 200.96 ft^2

Step-by-step explanation:

area of circle = (3.14 (pi))r^2

Radius is 6 (16 (the diameter)/2 = 8)

Answer:

Answer is H 200.96 :) Have a Happy Thursday!!

What is an angle that is supplementary KFA?


Answers

Given:

A diagram.

To find:

An angle that is supplementary to ∠KFA.

Solution:

Supplementary angle: Two angles are called supplementary angles if they are lie on the same side of a straight line and their sum is 180 degrees.

From the given diagram, it is clear that ∠KFA lies on the intersection of lines HL and IK.

∠KFA and ∠DFA lie on the same side of a straight line IK.

∠KFA and ∠KFL lie on the same side of a straight line HL.

So, ∠DFA and ∠KFL are the angles supplementary to ∠KFA.

We need only one supplementary angle. So, we write either ∠DFA or ∠KFL.

Therefore, an angle that is supplementary to ∠KFA is ∠KFL.

Pls help extra points and mark brainlist easy reading

Answers

Answer:

sneaking

Step-by-step explanation:

please mark brainliest, give a thanks, and rate a five stars if this helped! feel free to ask anymore questions if you need any more help! thanks!

(lol optional): add my sc: tealyn337

need help SHOW YOU WORK PLS

Answers

Starry Sky charges $34.50 an hour, Solar R' Us charges $28.60 and Lights On Us charges $26.17. The best option is Lights On Us. To get the answer just divide the total price by the number of hours.

Do this worksheets if someone do I will make him or her brainly if correct.

Answers

Answer:

in the picture above

Step-by-step explanation:

I hope that it's a clear solution and explanation.

I need help finding JKLM

Answers

Answer:

JKLM = 96 in^2

Step-by-step explanation:

294/21 = 14

21/12 = 14/x

21 * x = 12 * 14

21x=168

x=8

A = L*W

A=12*8

A=96 in^2

Need answer ASAP. Will give brainliest

Answers

Answer:

b

Step-by-step explanation:

V 34

Answer:

B

Step-by-step explanation:

credit to the other person

a line is parallel to y=-2x+1 and intersects the point (4,1). what is the equation of this parallel line

Answers

Answer:

y=-2x+9

Step-by-step explanation:

EFGH is an isosceles trapezoid. If EH=4x-27 and FG=x+9, find the value of x.
PLEASE HELP ASAP!

Answers

Answer:

If EFGH is an isosceles trapezoid,

if

EH=4x-27+

FG=x%2B9+

EG=3y%2B19

FH=11y-21

then EH=FG and EG=FH

set up equations:

4x-27=x%2B9 .......solve for x

4x-x=27%2B9

3x=36

x=36%2F3

3y%2B19=11y-21.......solve for y

11%2B19=11y-3y

30=8y

y=30%2F8

y=15%2F4

y=3.75

so,x=12    and y=3.75

you can also check the length of equal sides and equal diagonals:

EH=4%2A12-27+=21

FG=12%2B9+=21

EG=3%283.75%29%2B19=30.25

FH=11%283.75%29-21=30.25x=12

Step-by-step explanation:

I will give brainiest to whoever answers correctly !!

Answers

It has to be 247 days because one more day is added in February when it’s leap year

Help please
120
50
30
150

Answers

Answer:

Angle 4 will also be 150 degrees

Triangle ABC has vertex coordinates A(0, -3), B(-1,0), and C(-2, -1). It is
reflected across the x-axis. What are the coordinates of A'B'C?
O A. A'(3,0), B'0,1),C'(1.-2)
B. A'(0,3). B'(-1,0).C1-2,1)
C. A'0.-3).B'(1,0).C12,-1)
D. A'(-3,0).B'0.-1).C'(-1,-2)

Answers

9514 1404 393

Answer:

  B.  A'(0,3), B'(-1, 0), C'(-2, 1)

Step-by-step explanation:

The transformation for reflection across the x-axis is ...

  (x, y) ⇒ (x, -y) . . . reflection across the x-axis

Then ...

  A(0, -3) ⇒ A'(0, 3) . . . . . . matches choice B only

What is the value of the expression 10 + ( fraction 1 over 2 )4 ⋅ 48? (1 point)

a
12

b
13

c
16

d
18

Answers

Answer:

106

Step-by-step explanation:

10 + (1/2)(4)(48) = 10 + 2(48) = 10 + 96 = 106

what is the reciprocal of -1/5

Answers

Answer:

5/-1

Step-by-step explanation:

The reciprocal is just flipping the fraction.

HELP PLZ THIS IS DUE just write it on paper or in text JUST HELP ME 100

Answers

Answer:

for the first pic: 30 students

second: 4(1/5 + 2/3),    3 7/15

third: 2 3/5

Step-by-step explanation:

30 students for the first picture

Determine the solution 5(2x-6)=7x-3

Answers

Answer:

X=9

Step-by-step explanation:

10x-30 = 7x-3

10x-7x = -3 + 30

3x = 27

x=9

And remember the little $4308 pizza-mistake? How many weeks would you have
to work to pay for this mistake with the $13 bounced check? Round up to the next
whole week.
weeks

Answers

The answer would be 331 weeks rounded. Just divide.

It required 332 weeks to pay the whole amount.

Given that,

Amount to repay = $4308
Amount to be repaid in a week = $13
The number of weeks that will be consumed is to be determined.

What is arithmetic?

In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication, and division,

Let the number of weeks be x,
By arithmetic operations

13x = 4308
x = 4308 / 13
x = 331.34
x ≈332 weeks

Thus, It required 332 weeks to pay the whole amount.

Learn more about arithmetic here:

brainly.com/question/14753192

#SPJ2

4km : 370m in simplest form

Answers

Answer:

2km to 185 meters

Step-by-step explanation:

✓15
Is this rational or irrational

Answers

Answer:

irrational

Step-by-step explanation:

√15 is not a rational number it's a irrational number

:-))

Answer:

Irrational

Step-by-step explanation:

Rational numbers are those that can be written in the form a/b where a and b are both integers with no common factors.

sqrt15 cannot be written in that form, therefore it is irrational.

I need help ASAP please

Answers

I can’t see the question

Generalize Algebra Find the unknown number.
15. 12, 24, 36, ____

Answers

Answer:

48

Step-by-step explanation:

Count by 6

The sequence is simply going up in 12s. 12+12 is 24. 24+12 is 36. 36+12 is 48 and therefore the answer is 48.

Find the coordinates of the figure after the transformations.
Reflect the trapezoid in the x-axis. Then translate the trapezoid 2 units left and 3 units up.
The coordinates of the final image are:
W: (x,y)
X: (x,y)
Y: (x,y)
Z: (x,y)

Answers

Zzzzzzzzzzzzzzzzzzzzzzzzz

What is the value of (4)5/(4)3?

Answers

(4*5)/(4*3)
= 20/12
= (Now, we will simplify this equation and the least common multiple of 20 and 12 is 4 so, we will divide both 20 by 4 and 12 by 4 to get our answer in simplest and lowest form.
= (20 divided by 4)/(12 divided by 4)
= 5/3

So, in conclusion, the value of this question is 5/3.

Identify the slope and y- intercept y=2x + 2

Answers

Answer:

Slope:2

Y-int:2

Step-by-step explanation:

y=m(slope)x+b(y-int)

Answer:

Slope is 2, Y-intercept is 2

Step-by-step explanation:

Point-slope form is y=mx+b

m=slope

b=y-intercept

Hope this helped.

i need help with finding area whats the area of a 11ft an 6ft rectangle​

Answers

Hello!

[tex]\large\boxed{A = 66ft^{2}}[/tex]

Formula for the area of a rectangle:

A = b × h where:

b = base

h = height

We are given the base and height as 11 ft and 6 ft, so use the equation above to solve for the area:

A = 11ft × 6ft

A = 66ft²

Evaluate f (x) = 3(2)^x for x = -1

Answers

Answer:

3/2 or 1.5

Step-by-step explanation:

3(2−1)

=3(

1

2

)

=

3

2

The value of 3(2)ˣ for x = -1 is 3/2

What is simplification?

In mathematics, simply or simplification is reducing the expression/fraction/problem to a simpler form. It makes the problem easy with calculations and solving.

Given is a function, f(x) = 3(2)ˣ

When x = -1

f(-1) = 3(2)⁻¹

f(-1) = 3x2⁻¹

f(-1) = 3x1/2

f(-1) = 3/2

Hence, The value of 3(2)ˣ for x = -1 is 3/2

For more references on simplification, click;

https://brainly.com/question/2804192

#SPJ2

Help Pleaseeeeeeeeeeeeee!!!!!!!!! Help!!!!!!!

Answers

Answer:

i think its C and E

Step-by-step explanation:

( correct me if im wrong, i hope this helps!! )

I believe its C and E :))

A 24-foot ladder leaning against a wall makes a 30 ° angle with the ground . How high up on the building is the top of the ladder ?
HELP ASAP

Answers

Answer:

[tex]12\:\mathrm{ft}[/tex]

Step-by-step explanation:

When the ladder is leaning against the wall, a 30-60-90 triangle is formed. The ladder acts as a 24-foot hypotenuse. Because the height is facing the [tex]30^{\circ}[/tex] angle, the height is half the hypotenuse (30-60-90 rules). If you forget the side rules for a 30-60-90 triangle, simply use basic trig on the right triangle:

[tex]\sin 30^{\circ}=\frac{h}{24},\\h=24\sin 30^{\circ},\\h=24\cdot \frac{1}{2},\\h=\fbox{$12\:\mathrm{ft}$}[/tex].

guys I have a band test and pleaseeeee help me out
The natural minor scale -

A follows the key signature of the relative Major.

B Follows the key signature of the relative Major and adds the leading tone.

C follows the key signature of the relative Major, and raises the 6th and 7th ascending, and flats the 6th and 7th descending.

D has the same root as the relative Major.

Answers

Answer:

i think its c

Step-by-step explanation:

Mark has less than 20.00 to spend on the cost of dinner

Answers

What is the exact question tho
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