15x+6=10x+21 what’s x

Answers

Answer 1

Answer:

[tex]x=3[/tex]

Step-by-step explanation:

[tex]15x+6=10x+21[/tex]

Subtract 6 from both sides:

[tex]15x+6-6=10x+21-6[/tex]

[tex]15x=10x+15[/tex]

Subtract 10x from both sides:

[tex]15x-10x=10x+15-10x[/tex]

[tex]5x=15[/tex]

Divide both sides by 5:

[tex]\frac{5x}{5}=\frac{15}{5}[/tex]

[tex]x=3[/tex]

Answer 2

Answer:

[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{x = 3}}}}}[/tex]

Step-by-step explanation:

[tex] \sf{15x + 6 = 10x + 21}[/tex]

Move 10x to left hand side and change it's sign

Similarly, move 6 to right hand side and change it's sign

[tex] \dashrightarrow{ \sf{15x - 10x = 21 - 6}}[/tex]

Collect like terms

[tex] \dashrightarrow{ \sf{5x = 21 - 6}}[/tex]

Subtract 6 from 21

[tex] \dashrightarrow{ \sf{5x = 15}}[/tex]

Divide both sides by 5

[tex] \dashrightarrow{ \sf{ \frac{5x}{5} = \frac{15}{5}}} [/tex]

Calculate

[tex] \dashrightarrow{ \sf{x = 3}}[/tex]

Hope I helped!

Best regards! :D


Related Questions

Solve for x. 1/4x+8>11

Answers

Answer:

x > 12

Step-by-step explanation:

Step 1: Subtract 8 from both sides

[tex]\frac{1}{4}x[/tex] + 8 - 8 > 11 − 8

[tex]\frac{1}{4}x[/tex] > 3

Step 2: Multiply both sides by 4.

(4) ([tex]\frac{1}{4}x[/tex]) > (4) (3)

x > 12

Hope it helps

F(b) = 4b^2 + 3b Find f(b)

Answers

Answer: =4(b+3/8)^2 -9/16


The answer is = b(4b+7) if you factor it

Jose can read 7 pages of his book in 5minutes . At this rate how long will it take him to read the entire 175 page book.​

Answers

Answer:

It will take 125 minutes or 2 hours and 5 minutes.

Step-by-step explanation:

We can use a proportion.

7 pages is to 5 minutes as 175 pages is to x minutes

7 : 5 = 175 : x

7/5 = 175/x

7x = 5 * 175

7x = 875

x = 125

It will take 125 minutes or 2 hours and 5 minutes.


The slope of the line represented by the equation 2(x - 3) - 6y = 10 is
equal to what?

Answers

Answer:

[tex]\frac{1}{3}[/tex]

Step-by-step explanation:

The equation of the line is;

2(x - 3) - 6y = 10

Placing the line in slope intercept form we get;

6y = 2x - 6 - 10

6y = 2x - 16

Dividing throughout by 6 we get;

y = [tex]\frac{2}{6}[/tex]x - [tex]\frac{16}{6}[/tex]

Simplifying gives;

y = [tex]\frac{1}{3} x +2 \frac{2}{3}[/tex]

So the slope of this line = [tex]\frac{1}{3}[/tex]

What does constant growth and double mean

Answers

The doubling time is time it takes for a population to double in size/value. ... When the relative growth rate (not the absolute growth rate) is constant, the quantity undergoes exponential growth and has a constant doubling time or period, which can be calculated directly from the growth rate.

The measure of AngleRST can be represented by the expression (6x + 12)°.

Three lines extend from point S. The space between lines S R and S U is 78 degrees. The space between lines S U and S T is 3 x minus 12.

What is mAngleRST in degrees?

78°
84°
120°
156°

Answers

Answer:

The Answer is: C.120

Trust me it is right.Good Luck:)

Answer:

∠ RST = 120°

Step-by-step explanation:

∠ RST = ∠ RSU + ∠ UST , substitute values

6x + 12 = 78 + 3x - 12

6x + 12 = 3x + 66 ( subtract 3x from both sides )

3x + 12 = 66 ( subtract 12 from both sides )

3x = 54 ( divide both sides by 3 )

x = 18

Thus

∠ RST = 6x + 12 = 6(18) + 12 = 108 + 12 = 120°

The midpoint of AB is M(-1, –4). If the coordinates of A are (-3, -7), what are
the coordinates of B?

Answers

Answer:

           B(1, -1)

Step-by-step explanation:

If M(-1, 4) is midpoint of AB then:

[tex]x_M-x_A=x_B - x_M\qquad\quad\ \wedge\qquad y_M-y_A=y_B - y_M\\\\ -1-(-3)=x_B-(-1)\qquad\wedge\qquad -4-(-7)=y_B -(-4)\\\\ -1+3=x_B+1\qquad\qquad\wedge\qquad\ \ -4+7=y_B+4 \\\\ {}\qquad x_B=1\qquad\qquad\wedge\qquad\qquad \ y_B=-1[/tex]

using the difference in perfect squares completely factor the binomial x^2-121

Answers

Answer:

unditified?

Step-by-step explanation:

The coordinates of the midpoint of line GH are M(−132,−6) and the coordinates of one endpoint are G(−4, 1). The coordinates of the other endpoint are

Answers

Answer:

Since, the coordinates of the midpoint of line GH are M(\frac{-13}{2}, -6)(

2

−13

,−6) .

The coordinates of endpoint G are (-4,1)

We have to determine the coordinates of endpoint H.

The midpoint of the line segment joining the points (x_1, y_1)(x

1

,y

1

) and (x_2, y_2)(x

2

,y

2

) is given by the formula (\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})(

2

x

1

+x

2

,

2

y

1

+y

2

) .

Here, The endpoint G is (-4,1) So, x_1 = -4 , y_1=1x

1

=−4,y

1

=1

Let the endpoint H be (x_2,y_2)(x

2

,y

2

)

The midpoint coordinate M is (\frac{-13}{2}, -6)(

2

−13

,−6) .

So, \frac{-13}{2} = \frac{-4+x_2}{2}

2

−13

=

2

−4+x

2

{-13} = {-4+x_2}−13=−4+x

2

{-13}+4 = {x_2}−13+4=x

2

{x_2}=9x

2

=9

Now, -6 = \frac{1+y_2}{2}−6=

2

1+y

2

-12 = {1+y_2}−12=1+y

2

y_2= -13y

2

=−13

So, the other endpoint H is (-9,-13).

What kind of triangle?

Answers

Answer:

I think it's an obtuse scalene.

Step-by-step explanation:

I also think it’s an obtuse scalene

What is -8-__=-5
And how do i do it step by step?

Answers

Answer:

-3

Step-by-step explanation:

-5 is greater than -8, so in order for a subtraction problem to give a higher number is if it is negative, because a negative negative is a positive.

-8--3=-5

This is another way of saying

-8+3=-5

Find the mid point (-5,3) and (-3,-3)

Answers

Answer:

(-4, 0)

Step-by-step explanation:

midpoint formula: (x₁ + x₂) / 2 , (y₁ + y₂) / 2

(-5, 3) & (-3, -3)

(-5 - 3) / 2 , (3 - 3) / 2

-8/2 , 0/2

(-4, 0)

If the greatest common divisor is 18 What is the smallest common floor?

Answers

Answer:

lan ali ti cavâyi başi

》》》》》》》》》》》》》》》

turkiyedemisin laaa

The answer would be 6

Which algebraic expression represents the phrase “two times the quantity of a number minus 12”?
2y - 12
2(y -12)
2(y + 12)
2y + 12

Answers

Answer:

A

Step-by-step explanation:

two times a quantity of number_ 2y

minus twelve-. 2y - 12

Answer: A

Step-by-step explanation:


[tex]7y \times x49[/tex]
Whats the answer corectly​

Answers

Answer:

7y(x^49)

Step-by-step explanation:

Answer:

Whats X and what y

Step-by-step explanation:

will give brainliest and 20 points:
f(x+1) = 8(x+1)^2+3(x+1)-8

Answers

Answer:

Step-by-step explanation:

The Grayson family got a new backyard swimming pool. When they tell their friends how much water it holds, they round the number to 51{,}10051,10051, comma, 100 liters. Which could be the amount of water in the pool if they rounded the number of liters to the nearest hundred?

Answers

The amount of water rounded to the nearest hundred should be 100 liters.

Calculation of the amount of water:

Since The Grayson family got a new backyard swimming pool. When they tell their friends how much water it holds, they round the number to 51{,}10051,10051, comma, 100 liters.

So based on this, if there is 51 liters so it should be rounded to 100 liters

Therefore, we can conclude that The amount of water rounded to the nearest hundred should be 100 liters.

Learn more about water here: https://brainly.com/question/18935052

A college book store marks up the price that is pays the publisher for a book by 35%. If the selling price of a book is $56.00, how much did the bookstore pay for this book

Answers

Answer:

$41.48

Step-by-step explanation:

From the information given, you know that the price that the bookstore pays for a book is marked up 35% and that the selling price of a book is $56, so to be able to find the amount that the bookstore paid for a specific book, you can write the following equation:

x+0.35x=56, where x is the price the bookstore paid for the book.

Now you can solve for x:

1.35x=56

x=56/1.35

x=41.48

According to this, the bookstore paid $41.48 for this book.

1,848/1,386 As a fraction

Answers

are you looking to reduce this fraction? if so it would be 4/3. hope this helps!

Answer:

1.3 The 3 goes on continuonsly

Step-by-step explanation:

help meh please!!!!!! i think it is algebra 1. i am not so sure...........................................................................................................................................................................................

A rectangular plot has a diagonal of 39m and a width of 15m what is it's area​

Answers

Answer:

585m

Use the Pythagoreas' Theorem.

You will get the answer 585. Hope this helps!

Answer:

585m

Step-by-step explanation:

Answer gotta be 585m.

Write the equation with both x = 8 and x = -8 as solutions. please answer fast it’s 8th grade math <3

Answers

Answer:

7 + x + x= 7

Step-by-step explanation:

(7+8) + -8 = 7

Find the volume of the prism. Write the answer as a fraction in simplest form.

**EVERY PERSON WHO ANSWERS THIS WILL GET BRAINLIEST ANSWER!**

Answers

Answer:1 1/4

Step-by-step explanation:

if u add all together in decimals it will become 1.125.

pls give me brainless

if you can answer any of these please do and put the question number by the answer

Answers

19. 5x - 5 = 3x -9
2x = -4
x = -2

19. Answer is A

Please help! I’ll give brainliest!!
1. What is a proportion? Show example.
2. How do you solve propositions?
3. What is the “easy” method to solving proportions?

Answers

Answer:

1.a part, share, or number considered in comparative relation to a whole.

1/3 = 2/6

2.If a proposition is true, then we say it has a truth value of "true"; if a proposition is false, its truth value is "false". For example, "Grass is green", and "2 + 5 = 5" are propositions. The first proposition has the truth value of "true" and the second "false".

3.

Don't confuse cross multiplication with cross cancellation. You use cross cancellation to make multiplying fractions easier. Set the two cross products equal to each other. 1 · 2 = 2 and 0.5 · f = 0.5f.

convert 23456 octal into hexa number system

Answers

Answer:

272E

Step-by-step explanation:

PLEASE SOLVE QUICKLY!

Answers

Answer:

angle xyb will measure 123 degrees.

Step-by-step explanation:

because we know that angle ayz is 57 degrees and angle xyz is 90, we find that angle xya measures 33 degrees by subtracting 57 from 90. then, we can find angle xyb by subtracting 33 from 180, getting 147 degrees. when we add 147, 33, and 57, we get 237 degrees. finally, we subtract 237 from 360 and get 123 degrees, our final angle. hope this helps:)

If (42)p = 414, what is the value of p? (1 point) Question 5 options: 1) 7 2) 8 3) 12 4) 16

Answers

i didn’t get an answer that matches your answer choices, but here are mine:
exact form: p = 69/7
decimal form: p = 9.857142
mixed number form: p = 9 (6/7)

How to make 4 1/5 as a decimal?

Answers

Answer:

4.2

Step-by-step explanation:

Because 1/5 has to be converted into the 100 as the denominator and the number you are supposed to have for the numerator so it can be easier and 4 is the whole number so it doesnt need to be in the equation.

1/5

X

20= 20/100  so now all you have to do is make that a decimal since it hasnt got to 100 or past it and you have your answer

What is the speed of a car that traveled a distance of 75 km in 1.5 hours?

Answers

Answer:

50

Step-by-step explanation:

(I may be wrong)

I divided 75 km by 1.5

Answer: 50

Step-by-step explanation:

S=D÷T. So, The distance is 75 km and the time is 1.5 hours then 75÷1.5=50. 50 is the speed of the car

If m<9=97 and m<12=114, find each measure.

Answers

Angles in a transversal can be congruent either by theorems of corresponding and vertical angles.

The measure of the angles are:

[tex]\angle 1 = 97^o[/tex]

[tex]\angle 2 = 83[/tex]

[tex]\angle 3 = 66[/tex]

[tex]\angle 4 = 114^o[/tex]

[tex]\angle 5 = 83^o[/tex]

[tex]\angle 6 = 97^o[/tex]

[tex]\angle 7 = 114^o[/tex]

[tex]\angle 8 = 66^o[/tex]

[tex]\angle 9 = 97^o[/tex]

[tex]\angle 10 = 83[/tex]

[tex]\angle 11 = 66[/tex]

[tex]\angle 12 = 114^o[/tex]

[tex]\angle 13 = 83^o[/tex]

[tex]\angle 14 = 97^o[/tex]

[tex]\angle 15 = 114^o[/tex]

[tex]\angle 16 = 66^o[/tex]

Given that:

[tex]\angle 9 = 97^o[/tex]

[tex]\angle 12 = 114^o[/tex]

The following angles are congruent by theorem of vertical angles.

[tex]\angle 9[/tex] and [tex]\angle 14[/tex]

[tex]\angle 12[/tex] and [tex]\angle 15[/tex]

So, we have:

[tex]\angle 14 = 97^o[/tex]

[tex]\angle 15 = 114^o[/tex]

Apply the theorem of angles on a straight line, we have:

[tex]\angle 9 + \angle 10 = 180[/tex]

[tex]\angle 11 + \angle 12 = 180[/tex]

So, we have:

[tex]\angle 10 = 180 - 97[/tex]

[tex]\angle 10 = 83[/tex]

[tex]\angle 11 = 180 - 114[/tex]

[tex]\angle 11 = 66[/tex]

The following angles are congruent by theorem of vertical angles.

[tex]\angle 10[/tex] and [tex]\angle 13[/tex]

[tex]\angle 11[/tex] and [tex]\angle 16[/tex]

So, we have:

[tex]\angle 13 = 83^o[/tex]

[tex]\angle 16 = 66^o[/tex]

The following angles are congruent by theorem of corresponding angles.

[tex]\angle 9[/tex] and [tex]\angle 1[/tex]                 [tex]\angle 13[/tex] and [tex]\angle 5[/tex]                      [tex]\angle 10[/tex] and [tex]\angle 2[/tex]

[tex]\angle 14[/tex] and [tex]\angle 6[/tex]             [tex]\angle 11[/tex] and [tex]\angle 3[/tex]                     [tex]\angle 15[/tex] and [tex]\angle 7[/tex]

[tex]\angle 12[/tex] and [tex]\angle 4[/tex]               [tex]\angle 16[/tex] and [tex]\angle 8[/tex]

So, we have:

[tex]\angle 1 = 97^o[/tex]

[tex]\angle 4 = 114^o[/tex]

[tex]\angle 6 = 97^o[/tex]

[tex]\angle 7 = 114^o[/tex]

[tex]\angle 2 = 83[/tex]

[tex]\angle 3 = 66[/tex]

[tex]\angle 5 = 83^o[/tex]

[tex]\angle 8 = 66^o[/tex]

Read more about corresponding and vertical angles at:

https://brainly.com/question/14209455

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