7x - 4 + x = 12
x = ?

Answer:

9 nickels dude its soo easy.

Step-by-step explanation:

Answer:

9 nickles

Step-by-step explanation:

3 dimes is 30 cents

42 pennies is 42 cents

9 nickles is 45 cents

Answer:

21

Step-by-step explanation:

to find the number you have to add 3 to zero and then multiply by 7 to get 21 because 21 divided by 7=3 and then subtract 3 and you get zero

Answer:

30 Chairs

Step-by-step explanation:

I will solve this problem using algebra and try to explain in detail.

We can form two equations with the information given to us.

Firstly, 5 times a length of chairs (I will call this unknown length of chairs x), plus 5 left over chairs, equals the total number of chairs (I will call the total number of chairs y).

5x + 5 = y

Secondly, 3 times a length of chairs (I will call this unknown length of chairs x), plus 15 left over chairs, equals the total number of chairs (I will call the total number of chairs y).

3x + 15 = y

Since both equations are equal to y, they are equal to each other

5x + 5 = 3x + 15

Take 5 away from both sides of the equals, and take away 3x from both sides of the equals

5x - 3x = 15 - 5

2x = 10

Divide both sides by 2

x = 5 chairs

Put this back into either the first equation or the second to solve for y

3 (5) + 15 = y

15 + 15 = y

y = 30 chairs

Answer:

There is no picture or anything.

Step-by-step explanation:

But to find the quotient all you have to do is divide!

Hope that helps!

How was your day? I hope it was great! :)

Answer:

15 units

Step-by-step explanation:

hope i helped!

Answer:

last one

Step-by-step explanation:

last one

Answer:

349,525

Step-by-step explanation:

1st term:1

2nd term:4

3rd term:16

4th term:64

5th term:256

6th term:1024

7th term:4096

8th term:16384

9th term:65536

10th term:262144

Add them together and get 349,525

Answer:

[tex]\sqrt{74}[/tex] units

Step-by-step explanation:

Hi there!

We can use the Pythagorean theorem to solve this question:

[tex]a^2+b^2=c^2[/tex] where a and b are the two legs and c is the hypotenuse

Plug in the two legs 5 and 7 and solve for c, the hypotenuse:

[tex]5^2+7^2=c^2\\25+49=c^2\\74=c^2\\c=\sqrt{74}[/tex]

Therefore, the length of the hypotenuse in radical form is [tex]\sqrt{74}[/tex] units.

I hope this helps!

Answer:

D

Step-by-step explanation:

Answer:

19 inches and 26 inches

Step-by-step explanation:

first you have to take 45-7=38

then 38÷2=19

so 19 is one board

last you take 19+7=26

so 26 is the other board

Answer:

m∡2 = 70°

Step-by-step explanation:

angles 2 and 3 have the same measure in degrees because they are 'vertical angles'

Answer:

[tex]y=(x-4)^{2}[/tex]

Step-by-step explanation:

Find some points on the graph to do the plot.

[tex]x=0\\x=1\\x=2\\x=3\\x=4[/tex] [tex]y=16\\y=9\\y=4\\y=1\\y=0[/tex]

Complete the remaining part of the graph by symmetry.

Answer:

y = 122

Step-by-step explanation:

let us start by adding some angles ourselves.

we are going to add angles at the right side of 150 and at the left of y

we can call the angle beside 151 x and the angle beside y A

first of all, let us find the value of x

now, angles 151 and x add up to 180 because angles on a straight line add up to 180 and the two angle are on a straight line of their own

which means;

151 + x = 180

when we collect like terms,

x = 180 - 151

x = 29

therefore, our x = 29

next, we find A

now, angles 29 ( our x ), 93 and our A all add up to 180 because the sum of angles in a triangle is 180 and our angles are in a triangle ( at least an upside down one with lines shooting out from every end )

that is;

29 + 93 + A = 180

collect like terms

A = 180 - 29 - 93

A = 180 - 122

A = 58

so, now that we have our angle A, the next thing to do is the same thing we did to get angle x,

we can see that A and y are both on a straight line of their own which means that they both add up to 180 degrees

that is;

A + y = 180

and we know that A = 58

so;

58 + y = 180

we collect like terms to have

y = 180 - 58

y = 122

therefore, y = 122

if you might have noticed, y is the same as x and 93

and that is correct because according to a rule in math, the value of an exterior angle of a triangle is equal to the sum of its opposite interior angles of the triangle. this can be explained using our question above

The equation that relates xxx, yyy, zzz, and www is  xxxyyy = wwwzzz

Since Wilmer went up the hill for xxx minutes at a speed of yyy kilometeres per minute, the distance d he moves up the hill is d = speed × time = yyy × xxx = xxxyyy.

Also, Wilmer travels the same path at a speed of zzz kilometers per minute and it took him www minutes. So, the distance d' he moves down hill is d' = speed × time = zzz × www = wwwzzz.

Since the distance he moves up the hill equals the distance he moves down the hill, d = d'

So, xxxyyy = wwwzzz

So, the equation that relates xxx, yyy, zzz, and www is  xxxyyy = wwwzzz

Learn more about equations here:

https://brainly.com/question/12354057

Answer:

xy = wz

Step-by-step explanation:

Answer:

you subtracted 2y from both sides to each side getting 2y = 10x +8

Step-by-step explanation

Step-by-step explanation:

10x was added to both sides which resulted in

2y = 10x + 8

now divide both sides by 2

y = 5x + 4

The slope is 5 and the y intercept is (0,4)

Answer:

slope intercept form or an linear equation.

#1

m<LOM=m<JKL

#2

Linear pair .

#3.

Complementary angles

#4

Angle bisector theorem

#5

Similarity theorem

As per the given condition m ∠LOM = m ∠JKI, m ∠MON = m ∠IKH it is proved that m ∠LON = m ∠HKJ as they are congruent angles.

"Congruent angles is defined as the angles with equal measure."

According to the question,

In the given figure of the angles,

m ∠LOM = m ∠JKI  (given congruent angles)                     _____(1)

m ∠MON = m ∠IKH  (given congruent angles)                  _______(2)

Add both the side angle  m ∠MON in (1) we get ,

m ∠LOM + m ∠MON = m ∠JKI + m ∠MON

Replace angle  m ∠MON = m ∠IKH from (2)  on right hand side we get,

m ∠LOM + m ∠MON = m ∠JKI + m ∠IKH      ____(3)

m ∠LOM + m ∠MON = m ∠LON  ( M is the interior point of ∠LON)    ___(4)

m ∠JKI + m ∠IKH = m ∠HKJ  ( I is the interior point of ∠HKJ)            ___(5)

Form (3) , (4) and (5) we get,

m ∠LON = m ∠HKJ  (Congruent angles)

Hence, form the given condition it is proved that m ∠LON = m ∠HKJ , are congruent angles.

Learn more about congruent angles here

https://brainly.com/question/24887947

#SPJ2

Answer:

- 6(1 - y)(1 + y)

Step-by-step explanation:

- 6 + 6y² ← factor out - 6 from each term

= - 6(1 - y²) ← (1 - y²) is a difference of squares

= - 6(1 - y)(1 + y)

Answer:

24p^2q^2?

Step-by-step explanation:

Not enough info, so this is what I could get...

Answer:

5

Step-by-step explanation:

QR / PS = QP / SR

2x + 3 / 4x - 7 = 7 / 7

2x + 3 / 4x - 7 = 1

2x + 3 = 4x - 7

4x - 2x = 3 + 7

2x = 10

x = 10 / 2

x = 5

Answer:

I don't know which one it is. It is either 56 or -4. I will come back when I am done the quiz.

The answer is 4 and yes it is spelled 4. IT IS NOT -4. I REPEAT IT IS NOT -4

Step-by-step explanation:

After the simplification of the given expression, the value in the outcome is 4.

Given that,
To evaluate the expression. {[(12−36)÷(−12)]²−20}÷(−4).

The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.

Here,
=  {[(12−36)÷(−12)]²−20}÷(−4).
Simplifying.
= {[-24/-12]²-20}/-4
= [4-20]/-4
=-16/-4
= 4

After the simplification of the given expression, the value in the outcome is 4.

Learn more about simplification here: https://brainly.com/question/12501526

#SPJ5

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Answer: 6 2/25

Step-by-step explanation:

8/100 + 6

6= 6/1

6/1 + 8/100= 6 6/25 = 6.08

Answer:

6.08

Step-by-step explanation:

1. 1 hundredth is equal to 0.01 because it's 1 unit of out 100.

2. 1 whole is equal to 1 because it's just one, whole unit.

3. Given this information, 8 hundredths would be 0.08 and 6 wholes would be 6.

4. Now, to find the sum, just add these two numbers together:

Therefore, the answer is 6.08.

8.25

Simple question, but it's cause 30-20 = 10 and half of 10 is 5

Answer:

8.25

Step-by-step explanation:

halfway from .20 is 25 so

Answer:

The answer is 4/9. But I do not think that the options that you provided are true.

Answer:965.3

Step-by-step explanation: