Three times the sum of a number and nine is 12. Find the number.

Answers

Answer 1

Answer:

7

Step-by-step explanation:

3x+9=12

3x=21

x=7

Answer 2

Answer:

[tex] - 5[/tex]

Step-by-step explanation:

[tex]3(x + 9) = 12[/tex]


Related Questions

2. Find the slope. Make sure to reduce.

Answers

Answer:

-3/2

Step-by-step explanation:

Rise/run

Since the line is to the left it is a negative slope.

Hurry please!!!!

Which type of transformation is described by (x, y) + (x+2, y+3)?
(А)
a translation 2 units to the right and 3 units down

a translation 2 units to the left and 3 units down
a translation 2 units to the right and 3 units up
D
a translation 2 units to the left and 3 units up

Answers

Answer is C) which is 2 units right and 3 units up since it it positive it goes up and right.

(x, y) → (x+2, y+3) means a translation 2 units to the right and 3 units up.

What is transformation?

Transformations are changes done in the shapes on a coordinate plane by rotation, reflection or translation.

here, we have,

Given the rule of transformation:

(x, y) → (x+2, y+3)

If we move horizontally 2 units to the right, 2 is added to the x-coordinate of any given point, and then 3 units up.

In other words,

(x, y) → (x+2, y+3) means Translation 2 units right and 3 units up.

For example,

Let say if we have the point A(4, 5)

Using the translation rule:

(x, y) → (x+2, y+3)

A(4, 5) → A'(4 + 2, 5 + 3) → A'(6, 8)

Therefore, the new position of A(4, 5) after translating 3 units right and 2 units up would be: A'(6,8).

Hence, (x, y) → (x+2, y+3) means a translation 2 units to the right and 3 units up.

To learn more on transformation  click:

brainly.com/question/29791450

#SPJ7

giving brainliest Here are the coordinates of rectangle PLAY: (-11,20), (-11,-3), (-1,20), (-1,-3). Find the perimeter of this rectangle. See if you can figure out its side lengths without plotting the points.

Answers

Answer:

perimeter equals 66

sides: 23,23,10 10

You need to use the distance formula. I recommend plotting these points on graphing paper to help you.

in a study of 200 students under 25
years old, 5% have not yet learned to
drive. How many of the students
cannot drive?

Answers

Answer:

10%

Step-by-step explanation:

10% is the answer .........

10. Which representation of a transformation on a coordinate grid does not preserve orientation? A. (x, y) → (4x, 4y) A. , , , , , , x... Y... Symbol... 4 x... 4 y, , B. (x, y) → (−y, x) B. , , , , , x... Y... Symbol... Negative y... X, , , , , C. (x, y) → (14x, 14y) C. , , , , , x... Y... Symbol... 1 over 4x... 1 over 4y, , , , , D. (x, y) → (x, −y) D. , x... Y... Symbol... X... Negative y, , , , ,

Answers

Answer:

D. (x, y) → (x, −y)

Step-by-step explanation:

Transformation is the movement of a point from its initial location to a new location. Types of transformation are reflection, translation, rotation and dilation.

The orientation shows how an object is arranged. Rotation, translation and dilation preserves orientation while reflection does not preserve orientation.

The transformation (x, y) → (4x, 4y) shows the dilation by a scale factor of 4. Dilation preserve orientation.

The transformation (x, y) → (−y, x) shows the rotation of a point 90 degrees counterclockwise. Rotation preserve orientation.

The transformation (x, y) → (14x, 14y) shows the dilation by a scale factor of 14. Dilation preserve orientation.

The transformation (x, y) → (x, −y) shows a reflection over the x axis. Reflection does not preserve orientation.

The radius of a circle is 3.5 m. Find the circumference to the nearest tenth.

Answers

Answer:

21.99 but you have to round it

Step-by-step explanation:

Answer:

22

Step-by-step explanation:

yes

I need Help badly please help

Answers

Answer:

Its a

Step-by-step explanation:

Answer:

n = 72

Step-by-step explanation:

Multiply both sides of the equation by  8

[tex]8*\frac{n}{8}=8*9[/tex]

Simplify/Solve.

[tex]n=72[/tex]

hope this helps :)

An art class is making a mural for the school that has a triangle drawn
in the middle. The length of the bottom of the triangle is x. Another side
is 1 more than three times the length of the bottom of the triangle. The
last side is 2 more than the bottom of the triangle. Write and simplify an
expression for the perimeter of the triangle.

Answers

Answer:

Perimeter = 5x+3

Step-by-step explanation:

Perimeter = (3x+1)+(x+2)+x

Perimeter = 5x+3

It costs $2.80 to buy 4 apples. You want to buy 7 apples. How much will that cost?

Answers

Answer:

$4.90

Step-by-step explanation:

Answer:

10 dollars

Step-by-step explanation:

4 / 2.80 = 1.42857142857

so that means 1.42857142857 is the cost of one apple.

1.42857142857 x 7 = 10

so your answer is,

it costs $10 for 7 apples.

I Hope this helped!

Camillo is making gourmet peanut butter and jelly sandwiches for a food challenge. What is the unit price of a loaf of bread at each store? Store A: Store B: Store C: Store D:

Answers

Answer:

The answer is below

Step-by-step explanation:

A 2-column table with 4 rows. Column 1 is labeled Store with entries A, B, C, D. Column 2 is labeled Advertised Bread Prices with entries 3 loaves for 5 dollars and 94 cents, 4 loaves for 7 dollars and 80 cents, 5 loaves for 10 dollars and 5 cents, 6 loaves for 12 dollars and 12 cents.

Camillo is making gourmet peanut butter and jelly sandwiches for a food challenge.

PLS HELP ASAP!!What is the unit price of a loaf of bread at each store?

Store A:

Store B:

Store C:

Store D:

Solution:

The unit price of an item is the price for a single unit of measure of that item. It is measured in price / unit measure.

unit price of a loaf of bread at each store = cost of the loaf of bread / number of loaves

For store A, unit price = $5.94 / 3 loaves = $1.98 per loaf

For store B, unit price = $7.80 / 4 loaves = $1.95 per loaf

For store C, unit price = $10.50 / 5 loaves = $2.10 per loaf

For store D, unit price = $12.12 / 6 loaves = $2.02 per loaf

Answer:

yup the person above me is right but for C its $2.01 :>

Step-by-step explanation:

Hope this helps!!

Can you guys please help me with this problem

Answers

Answer: 108 just add them

Step-by-step explanation:

expand the following: -7(3y-1)

Answers

Answer:

-21y+7

Step-by-step explanation:

-7(3y-1) = 3y(-7) -1(-7) = -21y+7

Answer:

-21y + 7

Step-by-step explanation:

Just times - 7 with 3y then - 7 times with - 1

Please do number 10 for me.

Answers

D. 71+32=103 | 180-103=77

What is the explicit formula for the sequence 3, 7,
11, 15, 19, ...?
an = 2n +1
an = 2n-1
an = 4n +1
O an=40-1
DONE

Answers

Answer:

an = 4n - 1

a1 = 3

a2 = 7 = 3 + 4

a3 = 11 = 3 + 4.2

a4 = 15 = 3 + 4.3

a5 = 19 = 3 + 4.5

.....

=> this is a arithmetic with a1 = 3 and d = 4

=> an = 3 + 4(n - 1) = 4n - 1

The area of a square having length 1 cm =
mm.​

Answers

Answer:

100mm

Step-by-step explanation:

the answer is 100mm.

What is the value of x?

Enter your answer in the box.

x =
in.

Answers

Answer:

15 I think

Step-by-step explanation:

Pls dont quote that tho sry

24in. If I did it right you should have just multiplied both numbers by 3

What are the other two representations of this ratio 15 to 3

Answers

Answer:

you can answer it like 15 to 3 or

15:3

Isn’t It like 15:3 Ion Kno I’m not sure

What are the X and Y intercepts of the line in the graph?

Write the equation of the line in slope-inetrcept form

Answers

Answer:

Y-int: (0,3)

X-int: (4,0)

Equation: y = -3/4x + 3

Step-by-step explanation:

The ratio of the number of boys to the number of girls in a choir is 3 to 5, there are 36 boys in the choir. how many girls are in the choir?

Answers

The answer I think is 9

Please help me with this for brainliest.....

Answers

Answer:

a=542

Step-by-step explanation:

you welcome have a good day

Answer:

the answer will be a=524

Step-by-step explanation:

Exam Question

The coordinates of P are (-3, -6)
The coordinates of Q are (1, 4)
The coordinates of Rare (5, -2)
M is the midpoint of PQ.
N is the midpoint of QR.
Prove that MN is parallel to PR.
You must show each stage of your working.

Answers

Answer:

2

Step-by-step explanation:

12234

erttyy

23567

2356839200558

eriryifiirfigitogkgj

Doobs please helpp, mah hw is too hard :,(, the question is: add the polynomial expressions using the horizontal format

Answers

Answer:

9s^3 + 13s

Step-by-step explanation:

Combine like terms and simplify.

(6s^3 + 3s^3) + (9s + 4s) + (10 - 10)

(9s^3) + (13s)

9s^3 + 13s

A business named Beyond Boxes is considering adding a box in the shape of a triangular prism as shown.
5 cm
4 cm
8 cm
3 cm
How much cardboard will be needed to make this design?
A. 108 cm2
B. 96 cm
C. 76 cm?
D. 102 cm

Answers

Answer:

creo que es 4cm y la otra B no se por que esta en ingles ok

help please!! ill give brainliest :)

Answers

The answer would be 1.85+x=5.30

CX can be written in the form pa + qb
where p and q are fractions in terms of n.
c) (1) What is the value of p?
(i) What is the value of q?
(1)
m
(1)
i need help with c

Answers

Answer:

Step-by-step explanation:

CX can be written in the form pa + qb

where p and q are fractions in terms of n.

c) (1) What is the value of p?

(i) What is the value of q?

(1)

m

(1)

i need help with c

Ben earns $12,800 a year. About 15% is taken out for taxes. How much is taken out for taxes?

Answers

The answer is about $1920. If it’s rounded, then it’s about $1900 or $2000, depends on which number you round to.

Answer:

$1920

Step-by-step explanation:

to find a percent of a number, divide the percent by 100 then multiply by the value:

help me plzz. Thank you guys!!!!!!

Answers

Answer:

C. The y-intercepts of the two functions are opposites.

Step-by-step explanation:

The y-intercept of g(x) is -1 and the y-intercept of h(x) is 1. -1 and 1 are opposites, so the two y-intercepts are also opposites.

Can you solve this for me pleasee
Solve 18- m=6

Answers

Answer:

m = 12

Step-by-step explanation:

Given

18 - m = 6 ( subtract 18 from both sides )

- m = - 12 ( multiply both sides by - 1 )

m = 12

BE and CE are twoequal alltitudes of triangle ABC using RHS congurence rule prove that triangle ABC is isoloes

Answers

Answer:

The answer is below

Step-by-step explanation:

BE and CF are two equal altitudes of triangle ABC using RHS congruence rule prove that triangle ABC is isosceles.

Solution:

A triangle is a polygon with three sides and three angles. Types of triangles are right angled triangle, scalene triangle, equilateral triangle and isosceles triangle.

The RHS congruence rule states that if the hypotenuse and one leg of one triangle is equal to the hypotenuse and leg of another triangle; then the two triangles are equal. Two triangles are equal if they have three equal angles and three equal sides.

We have right angle triangles BEC and BFC

BE = CF (given)

CB = BC (both triangles have the same hypotenuse)

Hence ΔBEC = ΔBFC (RHS congruence rule)

Therefore; ∠BCE = ∠FBC (congruence theorem)

Since two angles of triangle ABC are equal (∠B = ∠C), therefore triangle ABC is an isosceles triangle and AB = AC

Help please :) Karim's mass changed by -4 1/2 last month. Max's mass changed by -6 6/7 last month. Which person matches each description?

Answers

Answer:

Max,Karim

Step-by-step explanation:

Answer:

Max, Max

Step-by-step explanation:

I got it right on Khan Academy

:>

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