For the equation 4(2x-3)-(mx+5)=5x+b to be an identity, which of the following must be true about the constants m and b? Show your work

(1) m = 3 and b = -7
(2) m = 8 and b = 17
(3) m = -3 and b = -15
(4) m = 3 and b = 17

Answers

Answer 1

Given:

The equation is

[tex]4(2x-3)-(mx+5)=5x+b[/tex]

To find:

The values of m and b.

Solution:

We have,

[tex]4(2x-3)-(mx+5)=5x+b[/tex]

Using distributive property, we get

[tex]8x-12-mx-5=5x+b[/tex]

On combining like terms, we get

[tex](8-m)x+(-12-5)=5x+b[/tex]

[tex](8-m)x-17=5x+b[/tex]

On comparing both sides, we get

[tex](8-m)=5[/tex]

[tex]-m=5-8[/tex]

[tex]-m=-3[/tex]

[tex]m=3[/tex]

And,

[tex]b=-17[/tex]

Therefore, m = 3 and b = 17.

Note: All options are incorrect.


Related Questions

421 × 18 ≈ ____ × ____ = ____

Answers

Answer:

Step-by-step explanation:

3473 8209ewu8wpwads =a d=waduwa sd a-= dwausS-d wa-sd was-d-aaa-d w=a dwa98-dhs;odwa s7dwa=w=da=da-dad-a w8ahspd-wasd wa-d 8-wasdwaf 0rgk9r8f

Answer:

18 x 421 = 7578

Step-by-step explanation:

421 x 18 = 7578

Cheryl paid $37.20 for 12 gallons of ice cream for a school picnic. How much would 1 quart of ice cream cost?
$0.68
$0.78
$3.10
$4.10

Answers

Answer:

b

Step-by-step explanation:

Answer:0.78

Step-by-step explanation:

This is for law of sines
It says solve each triangle so what parts am I solving? Do I solve all parts or if there’s 2 angles and 1 side, I look for the other angle?

Answers

Step-by-step explanation:

Solving a triangle means finding all unknown sides and angles.

For example, in #9, the third angle is 180° − 81° − 59° = 40°.

Using law of sines, the other two sides are:

a / sin 59° = 15 / sin 40°

a = 20.0

b / sin 81° = 15 / sin 40°

b = 23.0

What is the rate of change (slope) of the function y = −7x?

Answers

The rate of change is -7, because the standard equation is y = mx + b, where m is the slope and b is the y intercept. Here, m is what is attached to x, which is -7, s0 -7 is the slope.

-7

If the hypotenuse of a right triangle is ✔20 units, what are the lengths of the two legs?​

Answers

Answer:

It could by any 2 numbers that satisfy a^2+b^2= 20.

One example would be 4 and 2:

4^2+2^2=16+4=20

I hope this helped.

Triangle ABC with vertices A(9,13), B(12,11) and C(8,7) scale factor: K=2 center of dilation :(11,14)

Answers

The answer should be C

The final position of the triangle will be at  A"(7, 12), B"(1,-3) and C"(-3,-7)

Given the coordinate (x,y), if this coordinate is dilated by a factor of 2, the resulting coordinate will be (2x, 2y).

Given the coordinate of triangle ABC, A(9,13), B(12,11), and C(8,7), if these coordinates are dilated by a factor of 2, the resulting coordinates will be ats A'(18,26), B'(24,22) and C'(16,14)

If these coordinates are dilated along the centre (11, 14), the final position of the triangle will be at A''(18-11, 26-14), B"(12-11, 11-14) and C"(8-11, 7-14) which is  A"(7, 12), B"(1,-3) and C"(-3,-7)

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a) Simplify
7(x - 2)2
7X = 2
Please

Answers

Answer:

49 x2 + 28 x + 4

Step-by-step explanation:

What is 212 tens / 10

Answers

212 tens divided by 10 = - 4442962

Answer:

212 ones

Explaination:

If you have 212 tens and trade them all for ones, hence the ÷10, you'll get 212 ones.

Please help ASAP
Mark you as brainlister

Answers

you always want to remember a reflection over the y-axis results in the coordinates being changed to (-x,y)
an example would be (-5,4) then become (5,4)

Find two numbers if their difference is 16 and their ratio is 5:7.
please hurry

Answers

Answer:

40 and 56

Step-by-step explanation:

A teacher assigns 5 points for a correct answer and -2 points for an incorrect answer and 0 points for leaving the questioned unanswered. What is the score for Mohit who had 22 correct answers and 15 incorrect answers and 7 unanswered questions?

Answers

Answer:

Mohit has a score of 80

Step-by-step explanation:

Answer: Mohit got a scoe of 70

Step-by-step explanation: had this question on my assigment

This du today I NEED HELP!!!!! IS URGENT!!!!!!!!!!!!!

Answers

Answer:

x = 8

Step-by-step explanation:

The perimeter of a body is the sum of all its sides.

  Perimeter of the triangle;

       hypothenuse + opposite + adjacent  = x+6 + x + 3 + x + 9 = 3x + 18

  Perimeter of the rectangle  = x+1 + x + 4 + x + 1 + x + 4 = 4x + 10

Now,

 Since their perimeter is equal;

                           3x + 18 = 4x + 10

                             3x - 4x  = 10 - 18

                               -x  = -8

                               x = 8

What is the sun's radius in miles.​

Answers

Answer:

432,690 mi I think

Answer:

432,690 miles

Kevin rented a truck for one day. there was a base fee of $17.99, and there was an additional charge of 95 cents for each mile driven. Kevin had to pay $157.64 when he returned the truck. for how manny miles did he drive the truck?

Answers

Answer:

Step-by-step explanation:

Base fee = $17.99

Additional charge = $0.95 for each mile driven

If Kevin paid $157.64 when he returned the truck and we want to find out how many miles he drove the truck, step 1 would be to subtract the base fee.

157.65 - 17.99 = 139.65

This means that the remaining $139.65 is how much he paid for the miles he drove.

Since we know each mile costs $0.95.

Simply divide $139.65 by $0.95 to work out how many miles he drove.

Miles driven = 139.65 / 0.95 = ?

PLZ HELP ASAP. I need to make these equations

Answers

Answer:

725 = 475 +25x

15+x/2=9

Step-by-step explanation:

Answer:

725 = 475 +25x

15+x/2=9

Step-by-step explanation:

what is the answer??​

Answers

Answer:

-8x + 11

(i’m assuming you just need to combine terms?)

Step-by-step explanation:

-5x + 7 - 3x + 4

combine 7 & 4 to get

-5x + 11 - 3x

combine -5x and -3x to get

-8x + 11

Answer:

-8x + 11

Step-by-step explanation:

Find the next three numbers in the pattern.
1,4,9,16,

Answers

Answer:25,36,49

Step-by-step explanation:

Answer:

25 , 36 , 49

Step-by-step explanation:

1  ,  4  ,  9  ,  16  ,  25  ,  36  ,  49

1 +  3  +  5 + 7  + 9  +  11  + 13  =

Hope this helps! <3

If AM = MB, then AM + 5 = MB + 5.
which property

Answers

Answer:

Addition Property of Equality

Step-by-step explanation:

If A = B, then A + C = B + C

The statement is illustrating the Addition Property of Equality.

In the statement, A is AM, B is MB, and C is 5. Hope this helps!

The property of the required statement is addition Property of Equality.

It is required to find the property of the required statement.

What is a statement?

A statement is a declarative sentence that is either true or false but not both. A statement is sometimes called a proposition. The key is that there must be no ambiguity. To be a statement, a sentence must be true or false, and it cannot be both.

Given:

Addition Property of Equality:

In an equation, the additive property of equality states that if we add or subtract the same number to both sides of an equation, the sides remain equal.

If A = B, then A + C = B + C

∴c=c

Therefore, the property of the required statement is addition Property of Equality.

Learn more about statement here:

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A mechanic buys 2 barrels of oil. If there are 63 gallons in every barrel and approximately 3.785 liters for every gallon, approximately how many liters of oil did the mechanic buy?

Answers

Answer:

476.91 Liters

Step-by-step explanation:

Lets start by figuring the liters per gallon amount. 63 times 3.785 equals 238.455. Since we have 2 barrels, we need to multiply this by 2 in order to get a grand total of 476.91 liters of oil.

26 less than three times a number is -32 find the number

Answers

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

Suppose a number is :

[tex]x[/tex]

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Three times of it means :

[tex]3x[/tex]

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26 less than above means :

[tex]3x - 26[/tex]

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Equals - 32 :

[tex]3x - 26 = - 32[/tex]

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Find the that number ;

x asked thus we need to solve the above equation for x.

Let's do it....

[tex]3x - 26 = - 32[/tex]

Add sides 26

[tex]3x - 26 + 26 = - 32 + 26[/tex]

[tex]3x = - 6[/tex]

Divide sides by 3

[tex] \frac{3}{3} x = \frac{ - 6}{3} \\ [/tex]

[tex]x = - 2[/tex]

Done...

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

find the sum 9.33 + 48.4

Answers

Answer:

57.73

Hope this helps!!

57.73

My calculator told me:)

Translations can be written using ordered pair notation

True or false

Answers

Answer:

true

Step-by-step explanation:

Answer:

true

Step-by-step explanation:

Donna has 6 hours to spend training for an upcoming race. She completes her training by running full speed the distance of the race and walking back the same
distance to cool down. If she runs at a speed of 10 mph and walks back at a speed of 2 mph, how long should she plan to spend walking back?

Answers

Answer:

Avg speed of the round trip = 2*10*2/(10+2) = 10/3 mi/hr

D = r*t = (10/3)*6 = 20 miles

--> 10 miles each way

--> 5 hours walking back.

She'll get bored doing that.

Step-by-step explanation:

please help me!!! It’s due Thursday

Answers

that should be the answers

A local sporting goods store is planning to hire up to 24 temporary employees for its annual Black Friday Sale. Experienced workers (x) will be paid $20 per hour and produce 1.5 times the profit that an inexperienced worker produces. Inexperienced workers (y) get hired at $15 per hour. The store can pay up to $400 per hour for the temporary employees. How many of each type of worker can be hired to maximize profit?

Answers

Answer:

8 experienced workers and 16 inexperienced workers

Step-by-step explanation:

Let x represent the number of experienced workers, y represent the number of inexperienced workers.

The store can hire up to 24 temporary employees, hence:

x + y ≤ 24

The store can pay up to $400 per hour, hence:

20x + 15y ≤ 400

Also, x, y > 0

The solution to the above problem is at (8, 16). Hence x = 8 and y = 16.

The profit of an experienced worker is 1.5 times the profit that an inexperienced worker. hence:

Profit = 1.5x + y

Profit = 1.5(8) + 16

Profit = 12 + 16 = 28

Which ones are incorrect and what did they forget

Answers

Why what????????????????

Points A, B, and C are collinear. Point B is between A and C. Solve for x
AB= 3x, BC= 2x - 2 , and AC= 18. Find x.

Answers

Answer:

x=4

Step-by-step explanation:

You set the equation up like this

3x+2x-2=18

5x-2=18

5x=20

x=4

Pls help me I don't get it at all?

Answers

Answer:

the answer is b

Step-by-step explanation:

use symbolab


Solve the equation, justify
each step with an algebraic
property
50 + 3x = 7x- 2

Answers

Answer:

13

Step-by-step explanation:

Step 1:

50 + 3x = 7x - 2      Equation

Step 2:

50 = 4x - 2      Subtract 3x on both sides

Step 3:

52 = 4x    Add 2 on both sides

Step 4:

x = 52 ÷ 4      Divide

Answer:

x = 13

Hope This Helps :)

13
Add 2 to 50
Add 7x to 3x

help Anita is making headbands for her softball team. She needs a total of 34 yard of fabric. Which types of fabric cost less than $8 per yard? Write yes or no in each blank.


cotton 5.54
flannel 2.62
fleece 4.27
terry cloth 6.52

Answers

Cotton=No
Flannel=Yes
Fleece=No
Terry cloth=No

cost less than $8 per yard cotton, flannel and fleece.

What is Unitary Method?

It is a method where we find the value of a single unit from the value of multiple units and the value of multiple units from the value of a single unit.

First, let us make a note of the information we have. There are 5 ice-creams. 5 ice-creams cost $125.

Step 1: Let’s find the cost of 1 ice cream. In order to do that, divide the total cost of ice-creams by the total number of ice-creams. The cost of 1 ice-cream = Total cost of ice-creams/Total number of ice-creams = 125/5 = 25. Therefore, the cost of 1 ice cream is $25.

Step 2: To find the cost of 3 ice-creams, multiply the cost of 1 ice cream by the number of ice-creams. The cost of 3 ice-creams is cost of 1 ice-cream × number of ice-creams = 25 × 3 = $75. Finally, we have the cost of 3 ice-creams i.e. $75.

Given:

For cotton:

5.54 ÷ 3/4

=7.39<8

For flannel:

2.62 ÷ 3/4

=3.49<8

For fleece:

4.27 ÷ 3/4

=5.69 < 8

For terry cloth:

=6.52 ÷ 3/4

= 8.69>8

So, cost less than $8 per yard cotton, flannel and fleece.

Learn more about Unitary method here:

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