Solve 3(x-4)=-5 for x. Justify each step

Answers

Answer 1
3x - 12 = -5 plus 12
3x-12 +12 = -5+12
3x = 7 devision by 3
3x/3 = 7/3
x= 2,3333333333 =~ 2,3

Related Questions

probabiltiy can be used to determine the likelihood of specific ---------------- ( a:games,b:occurrences,c:questions,d:opportunities

Answers

The answer is B because it predicts what kind of things could come out as a probablility.

the volume of 10 000 drops of liquid is 1 fluid ounce. what is the volume of 1000

Answers

1/10 of a fluid ounce or 0.10
I got 0.10 which is 1/10 as well

Selena babysit on the weekends. The equation is Y equals 13x represents the amount of money she earns. What is the constant of proportionality

Answers

Since the equation of proportionality is represented as y = kx, k being the proportionality constant. And here the amount that selena earns on the weekends by doing babysitting is represented as y= 13x. So deriving from the equation above k is 13, which is the proportionality constant.

Find the percent of each number 350% of 96

Answers

the answer is 336.............
96 x 3.5= 336 (i got 3.5 because that is the decimal form of 350%.... 350/100=3.5)

In 1924 the temperature in Fairfield Montana drop 63° to -21° in 12 hours. What was the average hourly change in temperature

Answers

Since we’re trying to find the hourly change, we need to find out first the change in the temperature. We can convert 21 to a positive and subtract 63 from 21.

63 minus 21 is 42.
The temperature change would be positive 42 degrees.

Now, since we’re trying to find the hourly change, we’d need to do 42 divided by 12.

42 divided by 12 is is 3.5.

The hourly change in temperature is 3.5 degrees.

What is the solution to the inequality 2(x + 3) ≥ –10 – 4x? solve step by step, please.

Answers

I'm in 7th grade i need help with my math homework
Your answer is:

Here are the steps:

2(x + 3) ≥ –10 – 4x
=2x+6≥-10-4x
=2x+6-6≥-10-4x-6
=2x≥-4x-16
=2x+4x≥-4x-16+4x
=6x≥-16
=6x/6≥16/6
=x=-8/3

Starting from the same place, Miranda walks due west and Blake walks due east. On the number line, 0 represents their starting point; negative values represent the distance in feet, traveled west; and positive values represent the distance in feet, traveled east. How many feet apart are Miranda and Blake on the number line? Enter your answer in the box.

Answers

Answer:

360 feet

Explanation:

There are 10 hash marks between 0 and 300; this means that each hash mark is 300/10 = 30 feet.

Miranda's location is 5 hash marks below 0; this puts her at 5(30) = 150 feet below 0, or -150.

Blake's location is 7 hash marks above 0; this puts him at 7(30) = 210 feet above 0, or 210.

This means they are 210--150 = 210+150 = 360 feet.

Final answer:

To find the distance between Miranda and Blake on a number line, you sum the absolute values of the distances each has traveled from the starting point O, regardless of direction.

Explanation:

If Miranda walks due west and Blake walks due east from the same starting point O (represented as 0 on the number line), then the distance between Miranda and Blake is the sum of their absolute distances from the starting point. For example, if Miranda walks 2 feet west and Blake walks 3 feet east, the distance between them on the number line would be 2 (west) + 3 (east) = 5 feet.

Here, we're using the concept of absolute value where negative values represent westbound distances, and positive values represent eastbound distances.  Unlike calculating displacement, where direction mattered, calculating the distance between two points doesn't require you to consider direction. The magnitude of distance traveled in opposite directions from the same starting point is simply added together.

So, applying these principles of number lines and absolute values, to get the distance between Miranda and Blake, you add the distance each has traveled from the starting point O, regardless of their directions.

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What is the value of the underlined digit 28?

Answers

The value of the underlined 28 is 20 + 8

Yousef typed a 36-word paragraph in 2/3 minute. What is his typing speed, in words per minute? Enter your answer in the box.

Answers

we know that

Yousef typed a [tex]36[/tex]-word paragraph in [tex]2/3[/tex] minute

so

by proportion  

Find  the number of words typed in one minute

[tex]\frac{36}{(2/3)} \frac{words}{minutes} =\frac{x}{1} \frac{words}{minute}\\ \\x=36*\frac{3}{2}\\ \\x= 54\ words[/tex]

therefore

the answer is

Yousef typing speed, in words per minute is equal to

[tex]54\frac{words}{minute}[/tex]

The typing speed of Yousuf in words per minutes is [tex]54\;\rm words\;per\;minute[/tex].

Yousuf typed 36 words in  [tex]\dfrac{2}{3}\;\rm minutes[/tex].

By Unitary method, calculate the speed of typing by Yousuf as-

[tex]\dfrac{2}{3} \;\rm minutes \rightarrow 36\;\rm words\\1\;\rm minute \rightarrow \dfrac{36}{(\frac{2}{3})}\;\rm words\\1\;\rm minute \rightarrow \dfrac{36\times 3}{2}\;\rm words\\1\;\rm minute \rightarrow 54\;\rm words[/tex]

Hence, the typing speed of Yousuf in words per minutes is [tex]54\;\rm words\;per\;minute[/tex].

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You and your friends decide to take a survey to try to convince mall managers to add a new store. You split up to survey parts A, B, and C of the mall. If you survey part B what percent of the will you survey

Answers

33.3 percent or 33 and 1/3
You would be doing 33.3333333333 Repeting % of the survey

math question down below

Answers

You need to divide the - 4/5 by 3 to get the depth after 1 minute;
To do this you flip the second fraction (3/1) around and you multiply:
3/1 = 1/3

- 4*1/5*3 = - 4/15

This means he went - 4/15 miles down,
Hope this helps! :)

which of these nonterminating decimals can be converted into a rational number? A 0.48907542... b 0.02020202... C 0.92589542... D 0.10203040...

Paul is painting a square wall with an area of 115 square feet. To the nearest foot, what is the length of the wall? Hint: A = s2.
11 **
29
42
58

Answers

1.) B because it has a pattern
2.)
[tex]115 = s^{2} [/tex]
[tex] \sqrt{115} = \sqrt{ {s}^{2} } [/tex]
s is approximately 10.72381
Final answer:

Decimals B, C, and D can be converted into rational numbers as they have repeating patterns.

Explanation:

A nonterminating decimal can be converted into a rational number if it is a repeating decimal. Among the given options, decimals B, C, and D can be converted into rational numbers because they have repeating patterns.





Decimal B: 0.02020202... can be converted into a rational number by expressing it as the fraction 2/99.

Decimal C: 0.92589542... can be converted into a rational number by expressing it as the fraction 92589542/99999999.

Decimal D: 0.10203040... can be converted into a rational number by expressing it as the fraction 10203040/99999999.

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After a 90% reduction, you purchase a new soft drink machine on sale for 72$. What was the original price of the soft drink machine?

Answers

To find the original price we have to divide the sale price by 1 minus the percentage. 

Original price = Sale price/(1 - percentage reduction)

 $72/(1-.90) = $720

So, the original price for the drink machine was $720.

Which state's ratification guaranteed the constitution's approval?

Answers

The state of New Hampshire's ratification guaranteed the Constitution's approval, in what is now the United States. Under The Articles of the Confederation, article VII stated that nine states were needed to ratify the Constitution before it could be approved. New Hampshire was the ninth state to ratify the Constitution of the United States, in June of 1788.

the solution to -5 m = -20 is negative true or false

Answers

This is False because when you divide the -5 by -20, the negatives will cancel out.

The area of a square is 49 cm. What is the length of one side

Answers

Actually, the area of the square is 49 cm^2.

The length of one side is sqrt(49 cm^2) = 7 cm (answer)

Find the slope. Is it positive,negative,zero or undefined? Show your work. Y=-1/8x+12

Answers

You already found the slope, it is -1/8. It is a negative like because the slope is negative as well.
The slope is m= -1/8

What is 9 divided by 261

Answers

0.0344 is the answer to your question
9 divided my 261 is 29
Hope i helped

Nora took 8 bottles of water to a picnic. Of those bottles of water, she and her friends opened a certain number of bottles. b. What expression can be used to determine the number of unopened bottles at the end of the picnic?

A. 8+b
B. B+8
C.8-b
D.b-8

Answers

Problem
Nora took 8 bottles of water to a picnic. Of those bottles of water, she and her friends opened a certain number of bottles. What expression can be used to determine the number of unopened bottles at the end of the picnic?

Result
C. 8 - b

Solution
I strongly recommend that you try to find the reason why the answer is the way it is. 

Final answer:

To calculate the number of unopened bottles after some have been opened, subtract the number of opened bottles (b) from the total number brought to the picnic (8), resulting in the expression 8 - b.

Explanation:

The expression to determine the number of unopened bottles of water at the end of the picnic, when Nora took 8 bottles and a certain number of bottles were opened, would be 8 - b. Here, the variable b represents the number of bottles that were opened, and since we start with 8 bottles, we subtract the number that were opened (b) from the total number of bottles (8) to get the number that remain unopened.

Roscoe rides his bike at least 10 miles but not more than 30 miles. He rides at an average rate of 10.5 miles per hour. The amount of time it takes for Roscoe to ride his bike m miles is represented by a function. t(m) = m/10.5 What is the practical domain of the function?

Answers

Answer:

all real numbers from 10 to 30, inclusive

Step-by-step explanation:

The practical domain of function is , Roscoe can ride his bike only from 10 miles to 30 miles.

Domain of function is defined as the set of input values for which the function is defined i.e.  the set of its possible inputs,

The amount of time it takes for Roscoe to ride his bike m miles is represented by a function.

                       [tex]t(m) = m/10.5[/tex]

Where m represent, number of miles he can ride.

Above function is defined for every value of m . But in question it is mention that Roscoe rides his bike at least 10 miles but not more than 30 miles.

Therefore, Domain of function is from 10 miles to 30 miles.

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Kelly has 3/4 of a pie left. She wants to slip the pie with 3 of her friends.How much pie will each person get?

Answers

each person will get 1/4 of the pie

sophie is trying to see how thick her pile of paper is. She has 50 pieces of paper that are each 4.5×10^-4. How thick is the whole stack?

Answers

50 pieces of paper so you would multiply 50 by the thickness of each paper.

50x4.5x10^-4

=225x10^-4
Move decimal two times to the left

=2.25x10^-2

The diameter of Virus A is 2.6 • 10^-7 millimeters. If Virus B has a diameter that is 15 times larger than Virus A, find the diameter of Virus B.

Answers

multiply (2.6 x 10^-7) by 15 to get

3.9 x 10^-6
Final answer:

The diameter of Virus B, which is 15 times larger than Virus A, is 3.9 • 10^-6 millimeters.

Explanation:

Virus A possesses a minute diameter, measuring at 2.6 x 10^(-7) millimeters. When comparing it to Virus B, which is 15 times larger, you simply multiply Virus A's diameter by 15. Therefore, Virus B boasts a diameter of (2.6 x 10^(-7) mm) x 15, resulting in 3.9 x 10^(-6) millimeters. This means that Virus B is significantly larger than Virus A. This mathematical relationship highlights the scale and size differences between these two viruses, emphasizing the substantial increase in diameter when transitioning from Virus A to Virus B, due to the multiplication factor of 15.

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the length of a rectangle is 2cm more than 5 times the width ,the perimeter is 196 cm,what is the width & length?

Answers

196=x+((5*x)+2). The width is 32.33 and the length is 163.67

i got 36.333333333333333333333333333333333333

i need some help with solving inequalitys 9x-9 greater thab or equal to 2(8x-15)

Answers

Simplify 2(8x-15) first

A blue print for a building includes a rectangular room that measures 3 inches long and 5.5 inches wide. The scale for the blueprint says that 1 inch on the blueprint is equivalent to 10 feet in the actual building. What are the dimensions of this rectangular room in the actual building?

Answers

3 inches long and 5.5 inches wide.....1 inch = 10 ft

3 inches = (3 * 10) = 30 ft long <==
5.5 inches = (5.5 * 10) = 55 ft wide <==

Answer:

Length= 30 feet, breadth = 55 feet.

Step-by-step explanation:

Length of building in blue print= 3 inches

Breadth of building in blue print= 5.5 inches

It is given that 1 inch on the blue print is equivalent to 10 feet in actual building

We have to convert the dimensions

So Length of building in blue print in feet= 3 inches= 3×10=30 feet

Breadth of building in blue print in feet= 5.5 inches= 5.5×10= 55 feet

Hence the correct answer is Length= 30 feet, breadth = 55 feet.

Simplify negative 2 over 3 ÷ negative 7 over 4.

a. negative 7 over 6
b. negative 8 over 21
c. 8 over 21
d. 7 over 6

Answers

Answer:

B 8/21

Step-by-step explanation:

Jada has picked 1 cup of strawberries for a cake, which is enough for ¾ of the cake. How many cups does she need for the whole cake?

Answers

she needs 1/4 more or .25cup more for the whole cake

Answer:

she needs 1 [tex]\frac{1}{3}[/tex]   cup  of strawberries

Step-by-step explanation:

To find the number of cups needed, we will simply solve using proportion

From the question, Jade picked  1 cup of strawberries for 3/4 of a cake

and we are asked to find the number of cups needed for a whole cake

Let x be the number of cups needed for the whole cake

[tex]\frac{3}{4} cake[/tex]       =      1 cup of strawberries

1 cake     =       x

Cross multiply

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

[tex]\frac{3x}{4}[/tex]    =   1

cross multiply

3x =4

To get the value of x, we simply divide both-side of the equation by 3

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

(On the left-hand side of the equation, 3 will cancel out 3 leaving us with x and on the right-hand side of the equation 4 will be divided by 3 which will give us 1 [tex]\frac{1}{3}[/tex] )

x =  1 [tex]\frac{1}{3}[/tex]

Therefore  1 [tex]\frac{1}{3}[/tex]  cup of strawberries is needed for the whole cake.

What is the slope of this line?



Enter your answer in the box.

Answers

slope is rise over run 0/7 or maybe just 0

the correct slope is 0.

The slope-intercept form of the equation of a line that passes through point (–3, 8) is y = –x + 6. What is the point-slope form of the equation for this line?
y – 3 = –(x + 8)y + 3 = –(x – 8)y + 8 = –(x – 3)y – 8 = –(x + 3)

Answers

The point-slope intercept is y - 8 = -(x + 3).  I think.

Answer:

Option 4 - [tex]y-8=-(x+3)[/tex]

Step-by-step explanation:

The slope-intercept form of the equation of a line that passes through point (–3, 8) is [tex]y =-x+ 6[/tex].

The general form of slope intercept is [tex]y=mx+c[/tex]

where, m is the slope and c is the y-intercept.

On comparing,

m=-1 and c=6

The point slope form of the equation of a straight line is

[tex]y-y_1=m(x-x_1)[/tex]

Point is [tex](x_1,y_1)=(-3,8)[/tex]

Substitute the values,

[tex]y-8=-1(x-(-3))[/tex]

[tex]y-8=-(x+3)[/tex]

The point-slope form of the equation for this line is [tex]y-8=-(x+3)[/tex]

Therefore, Option 4 is correct.

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