Solve for d. 4d-4= 5d -8

Answers

Answer 1

Answer:

d=4

Step-by-step explanation:

We are given the equation:

4d-4=5d-8

and asked to solve for d. In order to solve for d, we must isolate it on one side of the equation.

First, subtract 4d from both sides of the equation.

(4d-4d)-4=(5d-4d)-8

-4= (5d-4d)-8

-4= d-8

Next, add 8 to both sides of the equation.

(-4+8)=d-8+8

(-4+8)= d

4=d

Let's check our solution. Plug 4 in for d and solve.

4d-4=5d-8 (d=4)

4(4)-4=5(4)-8

Multiply 4 and 4.

16-4=5(4)-8

Subtract 4 from 16.

12= 5(4)-8

Multiply 5 and 4.

12= 20-8

Subtract 8 from 20.

12=12

The statement above is true, so we know our solution is correct.

The solution to the equation is d=4.

Answer 2

Answer:

It is 4

Step-by-step explanation:

KHAN


Related Questions

Solve 27 and 29, will give BRAINLIST!!

Answers

Answer:

see below

Step-by-step explanation:

27.

We can use ratios to solve

152 dollars     532 dollars

---------------- = ----------------

4 days              x days

Using cross products

152x = 4*532

152x =2128

Divide each side by 152

152x/152 = 2128/152

x =14

14 days

29.

1 inch        2/3 inches

------------ = ----------------

6.5 ft          x ft

Using cross products

1x = 2/3 * 6.5

x = 4.333333

c = 4 1/3 ft

Answer:

[tex]\Large \boxed{\mathrm{27. \ 14 \ days}} \\ \\ \Large \boxed{\mathrm{29. \ 4 \frac{1}{6} \ feet}}[/tex]

Step-by-step explanation:

(27)

We can apply ratios to solve for the problem.

Let x be the missing value.

[tex]\displaystyle \frac{152}{4} =\frac{532}{x}[/tex]

Cross multiply.

152 × x = 532 × 4

152x = 2128

Divide both sides by 152.

x = 14

(29)

We can apply ratios to solve for the problem.

Let x be the missing value.

[tex]\displaystyle \frac{1}{6\frac{1}{4} } =\frac{\frac{2}{3} }{x}[/tex]

Cross multiply.

1 × x = 6 1/4 × 2/3

x = 6 1/4 × 2/3

Convert mixed fraction to improper fraction.

x = 25/4 × 2/3

x = 50/12

Simplify.

x = 25/6 or 4 1/6

9.48 as a mixed number in simplist form

Answers

Answer:

9 12/25.

Step-by-step explanation:

9.48 as a mixed number in simplest form:

948/100

948/100= 948 ÷ 4/100 ÷ 4

948/100= 948 ÷ 4/100 ÷ 4= 237/25

948/100= 948 ÷ 4/100 ÷ 4= 237/25= 9 12/25

9 12/25 is the mixed number.

Mind helping me out with these? Find the mean and range of the following data. 50, 60, 48, 72, 23, 98, 100 . The marks in a subject for 12 students are as follows: 31, 37, 35, 38, 42, 23, 17, 18, 35, 25, 35, 29. For the given data, find the (a) Mean (b) Mode (c) Median. If the mean of 26, 28, 25, x, 24 is 27, find the value of x.

Answers

Answer:

1. Mean- 64.43

  Range- 77

2. Mean- 30.42

   Mode- 35

   Median- 20

Step-by-step explanation:

1. Mean- 50+60+48+72+23+98+100= 451

              451 divide by 7= 64.43

   Range- biggest no. - smallest no.     100-23=77

2. Mean- 31+37+35+38+42+23+17+18+35+25+35+29= 365 -->

               365 divide by 12= 30.42

   Mode- most repeated no= 35

   Median- 2 middles-- 23+17=40 then divide by 2= 20.

Answer:

first:

mean=64.43

range=77

second:

mean =30.42

mode=35

median=33

x=-76

Someone help asap! pls

Answers

answer: -5p^2 - m^2 +29m - 23
^= square
Pls ask if needed step by step explanation

solve 5(2+n)=3(n+6)
it’s for my AQR class

Answers

Answer:

n = 4

Step-by-step explanation:

We can expand, getting 10 + 5n = 3n + 18.

Then, combine all like terms, getting 5n - 3n = 18 - 10, which can be rewritten as 2n = 8.

Solve this by dividing both sides by 2, and get n = 4.

Answer: so its n=4

Step-by-step explanation:   This problem will require distribution

5(2+n) = 3(n+6)

10+5n=3n+18

Move all the variables on one side

5n-3n=18-10

2n=8

Divide by 2

n=4

5 ( 2 + n ) = 3 ( n + 6 )

First distribute the 5 and the 3. By doing that, your equation should look like

10 + 5n = 3n + 18 Now, subtract 3n from both sides, this way all the " n " would be on the same side making it easier to solve

By subtracting 3n from both sides the equation would be

10 + 2n = 18 Now subtract 10 from both sides

By subtracting 10 from both sides your equation should be

2n = 8 Divide 2 from both sides

By dividing your equation should look like

n = 4 which is your answer

Please help! offering 15 points and a thanks with brainiest

Answers

Answer:

[tex]\huge\boxed{ 12\ people}[/tex]

Step-by-step explanation:

At least 6 hours means that the people took at least 6 hours and at most any number that is greater than 6. Here the greatest no. is 10.

So, the range for this will be 6-10

No. of People who sleep for 6-8 hours = 9

No. of People who sleep for 8-10 hours = 3

No. of People who sleep for 6-10 hours = 9+3

=> 12 people

Which number is between √21 and 3π/2

Answers

Answer:

√22 = 4.6904...

Step-by-step explanation:

√21 = 4.5826...

3π/2 = 4.7124...

so a number between them has to be near the value 4.6

the answer would be √22 = 4.6904...

4. Match the polynomial in the left column with its descriptive feature in the
right column
A x + 3x2 - 2x + 7
B. 3abº
C. 3x – 9x + 5x®
D. 7ab2 + 18ab-c-9a
E 2x - 9x + 8x
F. 4x - 7x? +9
G. x? -7
L. 9th degree monomial
II. Constant term of -7
III. 7 degree polynomial
IV. Leading coefficient of 4
V. Four terms
VI. 5th degree polynomial
VII. Equivalent to 5x + 3x+ - 9x​

Answers

Complete question is;

Match the polynomial in the left column with its descriptive feature in the

right column

A.) x³ + 3x² - 2x + 7

B.) 3a³ b ^(6)

C.) 3x⁴ – 9x³ + 5x^(8)

D.) 7a³ b ² + 18ab² c – 9a³

E.) 2x^(5) – 9x³ + 8x^(7)

F.) 4x^(8) – 7x² + 9

G.) x² − 7

I. 9th degree monomial

II. Constant term of −7

III. 7th degree polynomial

IV. Leading coefficient of 4

V. Four terms

VI. 5th degree polynomial

VII. Equivalent to 5x^(8) + 3x⁴ – 9x³

Answer:

A) For polynomial x³ + 3x² - 2x + 7 : Option V - 4 Terms

B) For polynomial 3a³ b ^(6) : option I - 9th degree monomial

C) For the polynomial 3x⁴ – 9x³ + 5x^(8) : Option VII - Equivalent to 5x^(8) + 3x⁴ – 9x³

D) For the polynomial 7a³b² + 18ab²

c – 9a³ : Option VI - 5th degree polynomial.

E) For the polynomial 2x^(5) – 9x³ + 8x^(7) : Option III - 7th degree polynomial.

F) for the polynomial 4x^(8) – 7x² + 9 : Option IV - Leading coefficient of 4

F) For the polynomial x² − 7 : Option II - Constant term of −7

Step-by-step explanation:

A) Most appropriate matching descriptive feature for the polynomial x³ + 3x² - 2x + 7 is Option V - 4 Terms

B) Most appropriate matching descriptive feature for the polynomial 3a³ b ^(6) is option I - 9th degree monomial. This is because the sum of the powers of a and b is 9.

C) Most appropriate matching descriptive feature for the polynomial 3x⁴ – 9x³ + 5x^(8) is Option VII - Equivalent to 5x^(8) + 3x⁴ – 9x³

D) Most appropriate matching descriptive feature for the polynomial 7a³ b ² + 18ab² c – 9a³ is Option VI - 5th degree polynomial. This is because the highest sum of powers attached to a and b in a figure is 2 + 3 = 5.

E) Most appropriate matching descriptive feature for the polynomial 2x^(5) – 9x³ + 8x^(7) is Option III - 7th degree polynomial. This is because the highest power of x is 7.

F) Most appropriate matching descriptive feature for the polynomial 4x^(8) – 7x² + 9 is Option IV: Leading coefficient of 4. This is because the coefficient attached to the largest power of x is 4.

G) Most appropriate matching descriptive feature for the polynomial

x² − 7 is Option II - Constant term of −7

Convert 15.8 square meters (m^2 ) into square feet ( ft^2).​

Answers

Answer:

Step-by-step explanation:

1 sq. meter = 10.7639 sq.feet

15.8 sq. m = 15.8 * 10.7639

                 = 170.06962 sq. feet

Molly earns a rebate each month on her movie tickets and books. She earns $0.25 for each movie ticket and $2 for each book. Last month molly purchased 4 movie tickets and earned $17. How many books did molly purchase last month?

Answers

Answer:

8 books

Step-by-step explanation:

Earning for each ticket is $0.25 and for each book is $2

If total earning for 4 tickets and x books is $17, then the equation is:

0.25*4 + 2x = 171 + 2x = 172x = 16x = 16/2x = 8

So Molly purchased 8 books

Every morning, siblings Jack and Jill roll a regular six-sided die to determine who will get to ride in the front seat on the way to school. If the number is even, Jack gets to ride in the front. If the number is odd, Jill gets to ride in the front.

Answers

Answer:

3/6

LCM of 6 and 20= 60

3/6=1/2=10/20=10days

so estimated 10 days

❤️ PLEASE HELP QUICK!! ILL GIVE BRAINLIST ANSWER!! ❤️

Answers

Answer:

3x² + 10x + 5

Step-by-step explanation:

Sum the sides together for perimeter (P)

Starting with the base and going clockwise

P = x² + 5x - 2 + x² + 5 + x² + 1 + 4 + 3x - 3 + 2x ← collect like terms

  = 3x² + 10x + 5

Drag equations to each row to show why the equation of a straight line is y = 3x, where 3 is the slope. Math item stem image

Answers

Answer:

Step-by-step explanation:

The question lacks appropriate diagram. Find the diagram attached.

Slope is the change in coordinate of the y coordinate to the x coordinate.

Mathematically, slope m = ∆y/∆x

From the diagram ∆y is the same as 3 (along the vertical) while ∆x is the same as 1 (along the horizontal)

m = ∆y/∆x = 3/1

∆y/∆x = 3/1

y/x = 3/1

Cross multiply

y × 1 = 3 × x

y = 3x

Hence the slope of the line is y = 3x

Answer:

you need to add the picture next time :)

Step-by-step explanation:

y/x=3/1 is the first blank

y=3x is the last one

hope that helps:)

Determine whether the following statement is true or false. Explain your reasoning. Jordan says that when solving the equation 4b+3=11, the best first step is to apply the Division Property of Equality.

.

A. The statement is false. Since there is a coefficient on the variable, the Multiplication Property of Equality should be used first.
.
B. The statement is true. The Division Property of Equality should always be the first property of equality used when solving linear equations.
.
C. The statement is false. The Subtraction Property of Equality should be used first to remove the constant term before dividing.
.
D. The statement is true. Since there is a coefficient on the variable, the Division Property of Equality must be used first.

Answers

Answer:

The correct option is;

C. The statement is false. The Subtraction Property of Equality should be used first to remove the constant term before dividing

Step-by-step explanation:

In other to solve the equation 4·b + 3 = 11, we have;

By the subtraction property of equality, we have;

Firstly we subtract 3 from both sides gives;

4·b + 3 - 3= 11 - 3

Next we apply the division property of equality, we have;

Both sides of an equation remain equal when we divide both sides of the equation by the same, non-number,

Dividing both sides by 4, gives;

4·b/4 = 8/4

b = 8/4 = 2

The solution to the equation, 4·b + 3 = 11 is b = 2.

Change this radical to an algebraic expression with fractional exponents

Answers

Answer:

X^(3÷5)

Step-by-step explanation:

radical basicly works as ÷ in the power.

What is (are) the solution(s) to the equation
2
(x−4)
2
=50

Answers

Answer:

x = 9 and x = -1

Step-by-step explanation:

This equation should be written all on one line:

2(x - 4)^2 = 50

using " ^ " to denote exponentiation.

Dividing both sides by 2 yields

(x - 4)^2 = 25

We must solve for x - 4, and then for x alone:

Taking the square root of both sides, we get:

x - 4 = ±5

which yields two separate solutions:  x = 9 and x = -1

Simplify.
Rewrite the expression in the form 4^n

Answers

Answer:

4^(-2)

Step-by-step explanation:

4^6 * 4^-8

Since the bases are the same, and we are multiplying, we can add the exponents

4^(6-8)

4^(-2)

4^(-2) would be your answer

Which property of equality was used to solve this equation?
-5x=4
-5x/-5=4/-5
X=-4/5
A.addition property of equality
B.
subtraction property of equality
C. multiplication property of equality
D.
division property of equality

Answers

Answer:

D. Division property of equality.

Step-by-step explanation:

[tex] - 5x = 4 \: \: \: \frac{ - 5x}{ - 5} = \frac{4}{ - 5} \: \: \: \: x = \frac{ - 4}{5} [/tex]

We divided the terms on both sides by -5.

Hope this helps ;)❤❤❤

Solve it: x + 9 - 7 = 15

Answers

Answer:

x = 13

Step-by-step explanation:

Rearrange: x = 15 + 7 - 9, x = 13

Answer:

X=2

Step-by-step explanation: First 9-7=2 then subtract 2 from both sides and you should be left with X=13

In a survey, 200 people were asked if they smoke and whether or not they exercise regularly (more than twice a week). The results are summarized in the table
below

Answers

Answer/Step-by-step explanation:

a. % of people who smoke = no. of people who smoke ÷ total no. of people surveyed × 100

Total no. of people who smoke is given = 4 + 36 = 40

Total people surveyed = 200

% of people who smoke = [tex] \frac{40}{200}*100 = \frac{40}{2}*1 = 20 percent [/tex]

a. % of people who do not exercise regularly = no. of people who do not exercise regularly ÷ total no. of people surveyed × 100

Total no. of people who do not exercise regularly = 36 + 134 = 170

Total people surveyed = 200

% of people who smoke = [tex] \frac{170}{200}*100 = \frac{170}{2}*1 = 85percent [/tex]

Help me plz I’ve never been good with math

Answers

Its 16.

So you have 12 miles on that trail, and markers every 2/3 of the way there. If you were to divide 2 with 3 then you can get the decimal of the fraction. Which in this case it’s 0.75. So every single 0.75 of the mile there is a marker. Divide 12 with 0.75 and you get 16 markers.


Hoped this helped in some way.

make y the subject of the formula
b=fg²/dt+gy​

Answers

Answer:

Step-by-step explanation:

[tex]b=\frac{fg^{2}}{dt+gy}\\\\\\b*(dt+gy) = fg^{2}\\\\\\bdt + bgy = fg^{2}\\\\\\bgy = fg^{2} - bdt\\\\\\y =\frac{fg^{2}-bdt}{bg}[/tex]

On a certain map, 3 centimetres represents 25 kilometres. How many kilometres does 1 1/2 decimeters represent?

Answers

Answer:

125 kilometres does 1 1/2 decimetres represent

Step-by-step explanation:

Given

3 cm = 25 KM  (Representative)

we have to find value of 1 1/2 decimetre

1 1/2 decimetre = (1*2+1)/2 decimetre = 3/2 decimetre

we know

1 decimetres = 10 cm

3/2 decimetres = 3/2 *10 cm = 15 cm

thus, we have to find 15 cm on the 3 cm = 25 KM map.

3 cm = 25 KM

1 cm = 25/3 KM

15 cm = 15*25/3 KM = 125 KM

Thus,

125 kilometres does 1 1/2 decimetres represent

Which table shows the reflection of f(x) across the x-axis?
The first picture is the given table and the other three are the possible answers.

Answers

Answer:

The correct option is;

x,                f(x)

-5,               3

-1,               -2

2,               -4

6,                 1

Step-by-step explanation:

The reflection of a point (x, y) across the x-axis is given by the relation;

Coordinate of the pre-image (x, y) [tex]\overset{Reflection \ across \ the \ x-axis}{\rightarrow}[/tex] Coordinate of image (x, -y)

Therefore, we have for the points as follows;

(-5, -3)  [tex]\overset{Reflection \ across \ the \ x-axis}{\rightarrow}[/tex] (-5, 3)

[tex](-5, -3) \mapsto (-5, 3)[/tex]

(-1, 2)  [tex]\overset{Reflection \ across \ the \ x-axis}{\rightarrow}[/tex] (-1, -2)

[tex](-1, 2) \mapsto (-1, -2)[/tex]

(2, 4)  [tex]\overset{Reflection \ across \ the \ x-axis}{\rightarrow}[/tex] (2, -4)

[tex](2, 4) \mapsto (2, -4)[/tex]

(6, -1)  [tex]\overset{Reflection \ across \ the \ x-axis}{\rightarrow}[/tex] (6, 1)

[tex](6, -1) \mapsto (6, 1)[/tex]

Rewrite 2(x + 3y - 2z) using the Destributive Property

Answers

Answer:

2x+6y-4z

Step-by-step explanation:

multiply the two by each term and coefficient inside of the parentheses

when you form General ideas the rules based on your experiences and hit up vacations you call that form of reasoning ___.​

Answers

The answer would be induction

Whhen you form General ideas the rules based on your experiences and hit up vacations you call that form of reasoning what?

[tex]\huge\tt\red{AnswEr}[/tex]

[tex]\huge\implies\tt\underline{Induction}[/tex]

evaluate ∛27 and explain your answer. Please do not answer just for points

Answers

Answer:

3

Step-by-step explanation:

(27) ^1/3

We want to know what number times itself 3 times is equal to 27

3*3*3 = 27

(3^3)^1/3

3

Answer:

[tex]\Huge \boxed{3}[/tex]

Step-by-step explanation:

[tex]\sqrt[3]{27}[/tex]

27 is a perfect cube.

A number when multiplied by itself 3 times gives 27.

[tex]\sqrt[3]{3 \times 3 \times 3}[/tex]

[tex]\sqrt[3]{3^3 }=3[/tex]

The cube root of 27 is 3.

A fair die is thrown once.find the probability that an odd number appears?

Answers

Hi

on a regular dice you have  3 even number  :  2 ;4;6

                                                3  odd number : 1;3;5

so probability to have an odd number is : 3/6 = 1/2

Answer:

1/2

Step-by-step explanation:

On normal six-sided die, there are the numbers: 1, 2, 3, 4, 5, and 6.

The odd numbers are 1, 3, and 5.

There is a [tex]\frac{1}{6}[/tex] chance that you will roll any number specifically. Since you stated 3 numbers, the probability that you will roll any of those three numbers is [tex]\frac{3}{6}[/tex], which is equivalent to [tex]\frac{1}{2}[/tex].

Dwayne is walking on a straight sidewalk. He spots
a vertical flagpole 10 feet to his right. His friend
Ursula says that the flagpole and sidewalk can be
used to model two lines. Which term best describes
the sidewalk and the flagpole?

Answers

Answer:

Skew lines

Step-by-step explanation:

Skew lines are two straight lines in three dimensional space that are neither parallel nor do they intersect Examples of skew lines are the front sidewalk and a line that goes along one of the top edges of the house, or lines that connecting opposite edges of a regular tetrahedron

Other examples of skew lines can be found in non co-planar non parallel, parts of a bridge.

B(7, 2) and C(-1,-9) are the endpoints of a line segment. What is the midpoint M of that line
segment?

Answers

Answer:

(3,-3.5)

Step-by-step explanation:

[tex]Mid-point formula : \frac{ x_{1} +x_{2}} {2}, \frac{y_{1}+y_{2} }{2} \\\\x=\frac{7+(-1)}{2} , y= \frac{2+(-9)}{2} \\x= \frac{6}{2} , y= \frac{-7}{2} \\x=3 , y= -3.5[/tex]

Midpoint M of the line segment is (3,-3.5)

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