what is the answer and steps to solve problem-2(b - 4) = 12

Answers

Answer 1

Answer:

b= -2

Step-by-step explanation:

First, you distribute.

-2(b-4) = 12

-2b + 8 = 12

Then, you combine like terms.

There are no like terms.

So, Next, you subtract 8 from each side.

-2b + 8 = 12

-2b - 8 = 12 - 8

-2b = 4

Finally, you divide each side by -2

-2b / -2

4 / -2

Answer: b = -2


Related Questions

Solve for x
4x + 3 = 7x - 6

will give 5 star and brainliest

Answers

Answer:

x = 3

Step-by-step explanation:

Let's solve your equation step-by-step.

4x+3=7x−6

Step 1: Subtract 7x from both sides.

4x+3−7x=7x−6−7x

−3x+3=−6

Step 2: Subtract 3 from both sides.

−3x+3−3=−6−3

−3x=−9

Step 3: Divide both sides by -3.

-3x ÷ -3 = x

-9 ÷ -3 = 3

x = 3

Please mark brainliest if possible, have a nice day. :)

This year, lashonda watched 85 movies. She thought that 34 of them were very good. If the movies she watched, what percentage did she think were very good

Answers

Answer:

40 percentage

Step-by-step explanation:

sana makatulong I'm not sure

Parallel Lines Practice NO LINKS PLEASE and please explain this for me so i can understand

Answers

Answer:

A

Step-by-step explanation:

As those two lines are parallel, we can express and equation:

[tex]2x + 10 = 5x - 35[/tex]

[tex]5x - 2x = 10 + 35[/tex]

[tex]3x = 45[/tex]

[tex]x = 15[/tex]

HELP PLEASE !!!!!!!!!!!!!!!

Answers

Answer:

x=30

Step-by-step explanation:

if 30 x 4 = 120 amd 2 = 30 = 60 then 60+120=180

Rey collected Three glasses of colored marbles.The first glass bas 27 red marbles the second one 36 green marbles and the third has 54 blue marbles he set the marbles into a set of boxes of each kind. What is the greatest number of marbles that he can put equally inside eaxh box

What is Asked:
What is Given:
What is operation:
What is number sentence:
What is Solution:
Check and look back:​

Answers

. What is asked: It asks us to find out the greatest number of marbles that rey can put equally inside each box.

■. What is it's Solution:

Before, i will start the solution first you shall need to know about, what is GCF ?GCF stands for the Greatest common factor. Now, i shall ask you: What is the GCF of 36 and 60. The ans will be: 12. How did i get answer 12 ? For that, find the factors of both numbers 36 and 60. then for finding GCF, multiply those factors which are common in both 36 and 60. ( See in the above attachment )

■. Now the Solution Starts:

Find the GCF of 27, 36 and 54. ( See in my right side of the attachment ).You will find the GCF = 9. That means, 9 is the greatest number of marbles that he can put equally inside each box.Hence, the required ans: 9.

Things you should know about:

What is HCF, GCD ( or GCF ) and LCF ? ( in my answer, I had explained GCF ).Don't confuse that HCF and GCF are same. HCF is mathematical term used in British English ( UK ) and GCF is also a mathematical term similar to HCF used in American English ( USA ). HCF = Highest Common Factor, GCF = Greatest Common Factor and LCF = Lowest Common Factor.

If you find anymore doubts regarding on my answer. then plz send your queries to the comment section. i will help you ;))

PLEASE HELP FAST! HIGH POINTS!!

Suppose a parabola has
vertex (5, -3) and also passes through the point (6, 1). Write the equation
of the parabola in vertex form.

Oy = (x – 5)2 -3
Oy = 4(x – 5)2 -3
Oy = 4(x + 5)2 -3
Oy = 4(x – 5)2 + 3

Answers

Answer:

I think is The second one

Step-by-step explanation:

Option B is correct, the equation of the parabola in vertex form is y = 4(x - 5)² - 3.

What is Parabola?

A parabola is a U-shaped plane curve where any point is at an equal distance from a fixed point and from a fixed straight line which is known as the directrix.

We can start by using the vertex form of the equation of a parabola, which is given by:

y = a(x - h)² + k

where (h, k) is the vertex of the parabola and a determines the shape and direction of the opening of the parabola.

We are given that the vertex is (5, -3),

Substitute h = 5 and k = -3:

y = a(x - 5)² - 3

We also know that the parabola passes through the point (6, 1), so we can substitute x = 6 and y = 1:

1 = a(6 - 5)² - 3

1 = a - 3

a = 4

Substituting a = 4 into the equation

y = 4(x - 5)^2 - 3

Hence, the equation of the parabola in vertex form is y = 4(x - 5)² - 3.

To learn more on Parabola click:

https://brainly.com/question/21685473

#SPJ7

PLS HELP WILL MARK YOU BRAINLIEST NO FAKE ANSWERS
a air balloon is at a height of 2,520 feet. it begins to descend at the rate of 140 feet per minute.
2. Find the expression for 2,5,8,10,15 minutes

Answers

Step-by-step explanation:

just think a little bit.

the balloon goes down 140 feet per minute.

how many feet will it have descended after 2 minutes ?

twice as much, right ?

after 5 minutes ? 8 minutes ? 10 minutes ? 15 minutes ?

we have to multiply.

simply because we need to maintain the value of the ratio feet/minute at all times.

so, when we multiply the "minute" part (by saying e.g. 5 minutes), we need to multiply the "feet" part with the same factor to keep the overall ratio the same. and then the resulting "feet" part gives us the answer.

so, after 2 minutes that means

140 ft / 1 min × 2/2 = 280 ft / 2 min

=> it descended 280 ft.

so, it's height is then at that moment

2520 - 280 = 2240 ft

5 minutes

140 ft / 1 min × 5/5 = 700 ft / 5 min

=> it descended 700 ft.

so, it's height is then at that moment

2520 - 700 = 1820 ft

and so on.

we see, that the general equation to determine the actual height (h) of the balloon depending on the passed number of minutes (m) is then

h = 2520 - 140m

so

2520 - 140×2 = 2240 ft

2520 - 140×5 = 1820 ft

2520 - 140×8 = 1400 ft

2520 - 140×10 = 1120 ft

2520 - 140×15 = 420 ft

HELPPPP !!!! anyone please ?​

Answers

It’s either every number is a solution or a=0

PLEASE HELP!!

Find the equation of the line that is perpendicular to the line
6x – 4y = 3 and passes through the point (6,-1).

(a) Find the slope of the given line 6x – 4y = 3.

(b) What is the slope of a line that is perpendicular to the above line?

(c) Now, find the equation of the perpendicular line that passes through (6,-1).

Answers

Answer:

a). y = 3/2x - 3/4    b).-2/3       c).y = -2/3x + 3

Step-by-step explanation:

a). 6x – 4y = 3

-4y = -6x + 3

y = 3/2x - 3/4

 - The slope is 3/2.

b). The slope of a perpendicular line would be the opposite: -2/3

c). y = -2/3x + b

-1 = -2/3(6) + b

-1 = -4 + b

3 = b

y = -2/3x + 3

What addition statement is shown?

Answers

Answer:

-3 + 5 = 2

Step-by-step explanation:

The value of the arrow on the numer line increased by 5 which resulted in a positive number which is 2.

-3 + 5 = 2 is the shown addition statement

ASAP please
please I need the answer with explanation I will mark brainiest if nonsense answers I will report​

Answers

x= 80
y= 110
i haven’t done this in a while but i tried lol

y = 110

X = 80

angle b is the same value as y so the value of that is 110

Kite total angle must be 360 so if you add 110+110+60 will give you 280. Minus that with 360 will give you X which is 80.

i need help plss i need an answer

Answers

I do not see the question

A square pool has a volume of 1728
cubic feet and a depth of 3 feet. A 4.5
feet high fence will be built around the
pool and the materials used to build the
fence cost $4.50 per square foot. How
much will it cost to build this fence?

Answers

Answer:

Step-by-step explanation:

Area of square = (Length of side)

2

By putting the given values, we have:

1728

=

(length of side)

2

×

8

Solve for length of side,

Length of side of square base of pool =  

1728

8

=

12

 

f

e

e

t

This gives us the dimensions around the pool, which is 18.73ft for each side. Thus, each side will be  

12

×

3.5

 

f

e

e

t

2

of area, which equals  

42

 

f

e

e

t

2

.

You have  

4

sides to enclose the pool multiply this area by four, and you arrive at the square feet surrounding the pool:

42

×

4

=

168

 

f

e

e

t

2

What is the point slope form of the line with slope 2/5 (2 over 5) that passes through the point (−4, −7)?




y+7=25(x+4)

y−7=25(x−4)

​y+4=25(x+7)​

y−4=25(x−7)

Answers

Answer:

y + 7 = 2/5 (x + 4)

Step-by-step explanation:

y + 7 = 2/5 (x + 4)

guys pls help me!!!!!!

Answers

The total degree of a straight line is 180 so 114+ X should equal 180
114+ x=180
x=180-114
x = 66

Erica wants to make clothes for her dolls. She needs 6.5 yards of fabric.

If the fabric costs $3.99 per yard, how much will Erica spend?


A.$20.54

B.$22.94

C.$25.94

D.27.94

PLEASE HELP ILL MARK BRAINLIEST!!!!!

Answers

C. 25.94

6.5(3.99)=$25.935= $25.94

y is directly proportional to the square of x y=9 x=4 it can be shown that y=6x^2 work out the value of y when x=7

Answers

Answer:

the answer is 294

Step-by-step explanation:

You buy a movie ticket for $5.25 and popcorn for $2.98. You pay with a 10-dollar bill. How much change will you get back?

Answers

Answer: $1.77

=======================================================

Explanation:

Use of a calculator makes quick work of this type of problem

5.25 + 2.98 = 8.23

10.00 - 8.23 = 1.77

-----------

If you want to do this using mental math, then one trick is to do this:

Think of 2.98 as 3.00, then add this to 5.25 to get 8.25. Notice that we're 2 cents too high (because of the jump from 2.98 to 3.00), so we need to subtract 2 cents from 8.25 to get 8.23

So that's a fairly quick way to add those two numbers in your head. The more practice you get, the quicker it will happen.

As for the subtraction part, you have a number of routes. Possibly a quick way is to jump from 23 cents to 30 cents (plus 7), then jump from 30 cents to 100 cents (plus 70). Therefore, we have 7+70 = 77 as the overall jump to get us to the nearest dollar. But we'll need one more extra dollar to end up at $10 exactly.

In other words, the "plus 77 cents" portion only gets us from $8.23 to $9, so that's why we need that extra dollar in change. Therefore, we've computed $1.77

I apologize for being a bit wordy. Despite being a bit long-winded, this mental math should come fairly quickly after enough practice.

Factor the expression

Answers

Answer:

(5x-3)(8x-5)

Step-by-step explanation:

(5x-3)²-(3x-2)(3-5x)=(5x-3)²-(3x-2)[-(5x-3)]

                              =(5x-3)²+(3x-2)(5x-3)

                              =(5x-3)(5x-3+3x-2)

                              =(5x-3)(8x-5)

Gwen says that the sum of -1 3/4 and 2 1/2 is the same as the difference between 2 1/2 and 1 3/4. Is Gwen correct? Explain why or why not?

Answers

Answer:

Yes

Step-by-step explanation:

The sum of -1 3/4 and 2 1/2:

- 1 3/4 + 2 1/2 = 2 1/2 - 1 3/4

The difference between 2 1/2 and 1 3/4:

2 1/2 - 1 3/4

This is same as well as:

- a + b and b - a

Answer:

[tex]yes...his \: \: statement \: \: is \: \: correct[/tex]

Step-by-step explanation:

Sum of the given 2 numbers

[tex] - 1 \frac{3}{4} + 2 \frac{1}{2} \\ - \frac{7}{4} + \frac{5}{2} \\ - \frac{7}{4} + \frac{5 \times 2}{2 \times 2} \\ - \frac{7}{4} + \frac{10}{4} \\ \frac{ - 7 + 10}{4} \\ = \frac{3}{4} [/tex]

Difference between the given 2 numbers

[tex]2 \frac{1}{2} - 1\frac{3}{4} \\ \frac{5}{2} - \frac{7}{4} \\ \frac{5 \times 2}{2 \times 2} - \frac{7}{4} \\ \frac{10}{4 } - \frac{7}{4} \\ \frac{10 - 7}{4} \\ = \frac{3 }{4} [/tex]

So, It's clear to you that,

sum of -1 3/4 and 2 1/2 is the same as the difference between 2 1/2 and 1 3/4.

Hope this helps you.

Let me know if you have any other questions :-):-)

someone help me pleasw

Answers

[tex] \bf \underline{Solution-} \\ [/tex]

[tex] \sf{ \sqrt[3]{ - 216} } \\ [/tex]

[tex] = \sf{ \sqrt[3]{ \bigg( \frac{1}{216} \bigg)} } \\ [/tex]

[tex] = \sf{ \sqrt[3]{ \bigg( \frac{1}{6} \bigg)^{3} } } \\ [/tex]

[tex] \sf{ = \bigg( \frac{1}{6} \bigg) ^{ \cancel3 \times \frac{1}{ \cancel3} } } \\ [/tex]

[tex] \sf = \bigg( \frac{1}{6} \bigg)^{1} \\ [/tex]

[tex] \sf = \frac{1}{6} \: \: \: \: Ans. \\ [/tex]

How do i work out 91=5k+6

Answers

Step-by-step explanation:

91=5k+6

91-6=5k

85=5k

k=85/5

k=17.

hope this helps you, Ro'shanea..!

I missed days when they were teaching this help pls will mark brainliest ​

Answers

Alternate exterior! they are outside of the parallel lines (exterior) and on different sides of the line cutting down the middle, which is also known as the transversal, which is why it’s alternate.

Name the property illustrated.

1 + 4 = 4 + 1

Answers

Answer: Communitive property of addition

Step-by-step explanation:

The communitive property states that if you reverse the order of a multiplication or addition problem you will get the same result.

communitive property examples

x + 2 = 2 + x

xy = yx

Boy earned $10 more than twice as much as his sister. Together they earned $60
How much did each earn?​ explain how to solve

Answers

30 each one 3x10:60 hope it help you

Three consecutive integers have a sum of 30. Which equation can be used to find x, the value of the smallest of the three numbers? (x + 1) + (x + 2) = 30 x + (x + 1) + (x + 2) = 30 x (x + 1) (x + 2) = 30 3 x (x + 1) (x + 2) = 30

Answers

Answer:x + (x +1) + (x +2)= 30.

Step-by-step explanation:Consecutive means one right after the other--such as 4,5,6. So the sum (add all the numbers together) must equal 30. So the equation should read

Hope this helps!

Answer:

The Answer is Option 3

Step-by-step explanation:

I got it right edge 2022

John has earned scores of 87%, 95%, 92%, 89%, 84% on his unit exams. If the final exam counts 1.5 times as much as a unit exam, what score must John make on his final exam to finish the class with an average of at least 90%?

Answers

The score John must have on his final exam in order to finish the class with an average of at least 90% is 62%.

In order to determine the score the that John must have in order to make an average of at least 90%, we have to determine the total sum of the scores he already has.

Sum of scores he already has = 87% + 95% + 92% + 89% + 84% = 447

Sum of scores he must have at the end of his sixth test = Average he must have on his average at the end of his final exam x number of exams written. 90 x 6 = 540

In order to determine the score John must have subtract 447 from 540. Divide the answer by 1.5.

540 - 447 = 93%

93 / 1.5 = 62%

A similar question was answered here: https://brainly.com/question/8709135?referrer=searchResults

A similar question was answered here:

Which postulate or theorem
proves that these two triangles are congruent?
A) HL Congruence Theorem
B) AAS Congruence Theorem
C) SAS Congruence Postulate
D) ASA Congruence Postulate

Answers

Answer:

C

Step-by-step explanation:

help please, only need to look at the graphic! is really appreciate it!!!

Answers

Answer:

Angle AOB measures 39°

Step-by-step explanation:

180-(90+51)=39

The Sears Tower in Chicago is 1,454 feet tall. It is 204 feet taller than the Empire State Building in New York City. Use the equation e + 204 = 1,454 to find the height of the Empire State Building​

Answers

The Empire State Building is 1,250 feet tall. Because it’s equal to the height of the sears tower (1,454ft) minus 204ft. 1,454-204=1,250
Other Questions
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