what is 3x + 9 =21 when x =4

Answers

Answer 1

Answer:

21

Step-by-step explanation:

Original Equation:

3x + 9 = 21

x = 4

Plug the value into the equation.

3 ⋅ 4 = 12

12 + 9 = 21

21 is the answer.

Hope I helped :)

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Related Questions

is the following a function? each employee's social security number paired with their salary.

a.) not enough information is given

b.) yes, because each employee's social security number is unique and will be paired with just one salary

c.) no, because not all employees will have a social security number

d.) no, because more than one employee will be paired with the salary​

Answers

Answer:

b.) yes, because each employee's social security number is unique and will be paired with just one salary

Step-by-step explanation:

each employees social security number will be different, but there will be more than one employee with one salary but the employee could be find by the social security number

a student on cross country team runs 30 minutes a day as a part of her

Answers

Answer:

Part of her?

Step-by-step explanation:

What..-?

What is an equation of the line that passes through the points (-6,5) and (6, -7)?

Answers

Answer:

Y= -x - 1

Step-by-step explanation:

Answer:

y= -x - 1

Step-by-step explanation:

i just got it right

Sarah had a party and bought 4 pizzas Each pizza had 12 slices at the end of the party there was 1 and 3/4 pizzas left how many slices were eaten
A.20
B.21
C.27
D.28

Answers

27

12x4=48

then 3+3+3=9 because its 3/4

then you add 12 because of the 1

then 48-21=27

Answer: its 27

Step-by-step explanation: give it to him or her they earned  it

I need help finding the solution​

Answers

✩ Answer:

 ✧・゚: *✧・゚:*✧・゚: *✧・゚:*✧・゚: *✧・゚:*

  [tex]\bold{Hello!}\\\bold{Your~answer~is~below!}[/tex]

Step-by-step explanation:

 ✧・゚: *✧・゚:*✧・゚: *✧・゚:*✧・゚: *✧・゚:*

✺ Subtract [tex]5[/tex] from both sides:

[tex]3z<17-5[/tex]

✺ Subtract [tex]5[/tex] from [tex]17[/tex] to get [tex]12[/tex]:

[tex]3z<12[/tex]

✺ Divide both sides by [tex]3[/tex]. Since [tex]3[/tex] is positive, the inequality direction remains the same:

[tex]z<\frac{12}{3}[/tex]

✺ Divide [tex]12[/tex] by [tex]3[/tex] to get [tex]4[/tex]:

[tex]\boxed{z<4}[/tex]

[tex]Hope~this~helps~and,\\Best~of~luck!\\\\~~~~~-TotallyNotTrillex[/tex]

             "ටᆼට"

One gallon is equal to about 3.7854 liters. What is the greatest number of whole liters of water you could pour into a one-gallon container without it overflowing?

Answers

Answer:

3

Step-by-step explanation:

If you try 4 liters, it will overflow since 4 is greater than 3.7854.

The answer is 3 liters.

-0.5-(-.8)+0.8+(-.5​)

Answers

Answer:

your answer is -1

Step-by-step explanation:

3.
Use the given information to draw a diagram and then prove the statement.
GIVEN: NO =PQ, M is the midpoint of NO. M is the midpoint of PQ.
PROVE: NM = PM

Pls help I don’t understand this

Answers

Step-by-step explanation:

NO and PQ are congruent segments (have the same length), and both have the same midpoint M.

NO ≅ PQ, given.

NM ≅ ½ NO, definition of midpoint.

PM ≅ ½ PQ, definition of midpoint.

PM ≅ ½ NO, substitution.

PM ≅ NM, substitution.

Could anyone prove this question correct... pls... I will mark branliest for step by step solution.

Answers

Answer:

C

Step-by-step explanation:

the answer is 15. hope this helps


A calculator screen shows a number in scientific notation as 1.04E10. Write this number in standard form.

Answers

Answer:10400000000

Step-by-step explanation:

The standard form of a number is a way of writing the number in a form of a  decimal number, between 1.0 and 10.0, multiplied by a power of 10.

The standard form of the number 1.04E10 is 1.04 x [tex]10^{10}[/tex].

What is a standard form of a number?

The standard form of a number is a way of writing the number in a form of a  decimal number, between 1.0 and 10.0, multiplied by a power of 10.

We have,

1.04E10

This is in a scientific notation.

E10  = [tex]10^{10}[/tex]

So,

1.04E10  = 1.04 x [tex]10^{10}[/tex]

Thus the standard form of the number 1.04E10 is 1.04 x [tex]10^{10}[/tex].

Learn more about the scientific notation of a number here:

https://brainly.com/question/15361382

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I neeeed help someone help meeeeeee
The sign at the right shows the costs for a​ deep-sea fishing trip. How much will the total cost be for 1​ adult, 2​ children, and 1 senior citizen to go on a fishing​ trip? Use mental math.

DEEP-SEA FISHING

Adults.....$41

Children (12 & under)....$35

Seniors (65 & up)......$39

Answers

Answer:

$150

Step-by-step explanation:

1 adult ($41) + 2 children ($35+$35) + 1 senior citizen ($39)

what 1 2/7 divided by 5 1/7

Answers

Answer:

0.25 as a decimal and 1/4 as a fraction

Hope this helps :)

Answer: 1/4

Step-by-step explanation:

(Not really sure how to explain it, but there's the answer.)

Help me pleaseee thank you In advance please explain to me too so i know what to do next time :)

Answers

I believe it would be options B and C.
Explanation: An angle bisector divides an angle into two congruent angles. So basically, it is a line that divides an angle perfectly in half. Each half has to be equal. B and C make sense because they are both split evenly.

If three quarters of a number decreased by twenty is equal to eighty two, what is that number?

Answers

A number is :

[tex]x[/tex]

_________________________________

Three quarters of it means :

[tex] \frac{3}{4}x \\ [/tex]

_________________________________

Decrease by 20 means :

[tex] \frac{3}{4}x - 20 \\ [/tex]

_________________________________

Equals to 82 means :

[tex] \frac{3}{4}x - 20 = 82 \\ [/tex]

_________________________________

What is that number ?

x asked so we must solve the above equation for x.

Let's do it....

[tex] \frac{3}{4}x - 20 = 82 \\ [/tex]

Plus sides 20

[tex] \frac{3}{4}x = 82 + 20 \\ [/tex]

[tex] \frac{3}{4}x = 102 \\ [/tex]

Multiply sides by 4

[tex]3x = 102 \times 4[/tex]

Divided sides by 3

[tex]x = \frac{102 \times 4}{3} \\ [/tex]

[tex]x = \frac{102}{3} \times 4 \\ [/tex]

Simplify

[tex]x = 34 \times 4[/tex]

[tex]x = 136[/tex]

So that number is 136 .

_________________________________

And we're done.

Thanks for watching buddy good luck.

♥️♥️♥️♥️♥️

Find the value of x for which d ||m.

Answers

Answer :

A and B are alternate interior angles[tex].[/tex]

∠A = ∠B

➠ (2x - 20)° = 90°

➠ 2x = 90° + 20°

➠ 2x = 110°

➠ x = 110°/2

x = 55°

Hope It Helps!

The value of x for which d || m is 35° and their alternate angles are of equal measure.

What is a transversal line?

A transversal is a line that intersects two lines on the same plane at two different points. When those two intersected lines are parallel their alternate angles, interior angles and exterior angles are equal and the converse of this statement is also true.

We know when two parallel lines are intersected by a transversal their interior alternate angles are equal.

∴ (2x - 20)° = 90°

2x = (90 - 20)°.

2x = 70°.

x = 35°.

learn more about transversal here :

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please help this is due in a few minutes

Answers

Answer:

a. 8m

b. 7cm

Step-by-step explanation:

a. Area of a square is s², where s is the side length.

To find s:

s² = 64

s = √64

s = ±8

length cannot be negative, hence it is positive 8

b. Perimeter of a square is 4s = P, where P is the perimeter and s is the side length.

4s = 28

s = 7

What transformations occur for the following equation? *
y = 8(x - 1)3 + 7

Answers

Answer:

☆<¤HOPE IT WILL HELP you >

y=(8x-8)3+7

y=24x-24+7

y=24x-17

17=24x

17/24=x

SO == x-17/24 y= 17

It is a rational number because 98.45 can be turned into a fraction.

Answers

Do you like my sword, sword?
Sword, my diamond sword, sword
You cannot afford, ‘ford
‘Ford my diamond sword, sword
Even if you could, could
I have a patent!

No one else can make a sword
Exactly in this manner, manner
Welcome to my manor, manor
I ca-ca-ca-canna, canna

Swing, swing, swing my sword, sword
Whenever I get bored, bored
I can swing my sword, sword
I can swing my sword, sword

Answer:

Yes, but if you are looking for the answer it is 9845/100

Step-by-step explanation:

​​ALGUIEN POR FAVOR AYUDEME A RESOLVER ESTOS 3 PROBLEMAS

Answers

Answer:

a. x^2 - 1

b. x^2 - 6x + 9

c. [tex]\dfrac{3x + 1}{x^2 + x}[/tex]

Step-by-step explanation:

a.

(x + 1)(x - 1) =

= x^2 - x + x - 1

= x^2 - 1

b.

(x - 3)^2 =

= (x - 3)(x - 3)

= x^2 - 3x - 3x + 9

= x^2 - 6x + 9

c.

[tex] \dfrac{3 + \frac{1}{x}}{1 + x} = [/tex]

[tex] = \dfrac{x(3 + \frac{1}{x})}{x(1 + x)} [/tex]

[tex] = \dfrac{3x + 1}{x + x^2} [/tex]

[tex] = \dfrac{3x + 1}{x^2 + x} [/tex]

the question is
what is the distribution of the graph? explain how you know​

Answers

Answer:

Pyramid Distribution

Step-by-step explanation:

I don't know the answers but from what I know it has to be pyramid distribution or triangle distribution Hope This Helps!

There are 340 calories in five ounces of a certain ice cream. How many calories are there in three pounds?

Answers

68 pounds I got to get off my phone number I got it

Solve for x


x = _____

Answers

Answer:

x=5

Step-by-step explanation:

They are vertical angles, so they are equal.

22x+5=23x

minus 22x from each side

5=x

and you can switch it around :)

x=5


A box of baseball cards is $25.00 with %15 off. What is the sale price of the box of cards? In other words, how much is it after
take the discount off)

Answers

Answer:

21.25

Step-by-step explanation:

you would multiply 25 by 0.15 to get the percent being taken off then subtract that from your original price

WILL MARK BRAINLIEST
Read and Answer
try your best :)

Answers

Answer:

the answer is D

Step-by-step explanation:

You would multiply the sales tax (0.06) to the total of the items bought then you would add that to the total amount of the items bought so 34.85+ 2.091 which is the answer of D

Can someone solve for x

Answers

Answer:

x = -5

Step-by-step explanation:

77+66+x+42 = 180

x + 185 =180

x = -5

X-9y=17 find y (use integers or fractions for any numbers in the expression)

Answers

Let's see what to do buddy...

_________________________________

[tex]x - 9y = 17[/tex]

Subtract the sides of the equation minus x

[tex] - 9y = 17 - x[/tex]

Divided the sides of the equation by -9

[tex] \frac{ - 9}{ - 9}y = \frac{17 - x}{ - 9} \\ \\ [/tex]

[tex]y = \frac{ - (17 - x)}{9} \\ [/tex]

[tex]y = \frac{x - 17}{9} \\ [/tex]

_________________________________

And we're done.

Thanks for watching buddy good luck.

♥️♥️♥️♥️♥️

Simplify rational expression
16 – 4y?
3y2 – 12y + 12
8 + 4y
3y – 6
Which values of y make the expression undefined?

Answers

Answer: 8+4y/3y-6. Answer to what makes expression undefined: y=2

Step-by-step explanation:

I apologize for no work but that is what the answers are

HELP ME PLEASE! A representation of a linear equation in two variables is graphed below.
Which linear equation in two variables can be used to represent the line?
y=23 - 2
y = x +4
y=2 - 2
y= 2+2

Answers

Option C, y = 1/2 x -2 is the correct answer

Eric can run I mile in
6.5 minutes. How long
will it take him to run
3.5 miles?

Answers

Answer:

it will take Eric 22.75 minutes to run 3.5 miles

Step-by-step explanation:

A postal carrier delivers mail to 20 mailboxes on one side of a long street. Beginning with the first mailbox, the carrrier takes 5 seconds to sort and put the mail in each mailbox, and the mailboxes are 100 feet apart. How fast (in feet per second) must the carrier walk in order to complete delivery to all 20 mailboxes in 10 minutes? Answer in decimal form as a.b (for example, 9.7).

Answers

Answer:

3.8 seconds

Step-by-step explanation:

Time taken to sort the mail is [tex]5[/tex] seconds

Let time taken to go from one mailbox to the next be [tex]x[/tex]

Distance between the mailboxes is [tex]100[/tex] ft

So, sorting the mail for one mailbox and going to the next will be done in [tex](5+x)[/tex] seconds

This will happen 19 times and 5 seconds will be needed to sort the mail for the last mail box. The carrier will have to deliver to all the 20 mailboxes in 10 minutes. So, the total time taken will be

[tex]19(5+x)+5=10\times 60\\\Rightarrow 19(5+x)=595\\\Rightarrow 5+x=\dfrac{595}{19}\\\Rightarrow x=\dfrac{595}{19}-5\\\Rightarrow x=\dfrac{500}{19}\ \text{s}[/tex]

Time taken to go from one mailbox to the other is [tex]\dfrac{500}{19}\ \text{s}[/tex]

Speed is given by

[tex]v=\dfrac{100}{\dfrac{500}{19}}\\\Rightarrow v=3.8\ \text{ft/s}[/tex]

The speed at which the carrier has to move from one mailbox to the next is 3.8 seconds.

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