If (x+3)(x-5)=x^2 +mx-15, the value of m is...?
Pls explain the answer, thx!

Answers

Answer 1

[tex]▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ { \huge \mathfrak{Answer}}▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ [/tex]

let's solve :

first step : we have to expand the term in L.H.S

[tex](x + 3)(x - 5)[/tex][tex] {x}^{2} - 5x + 3x - 15[/tex][tex] {x}^{2} - 2x - 15[/tex]

now, let's equate the equations to find the value of m :

[tex] {x}^{2} - 2x - 15 = {x}^{2} + mx - 15[/tex]

value of m = -2

Answer 2
The value and the answer is m = -2

Related Questions

Help help help help

Answers

Step-by-step explanation:

A quotient is a fraction.

A sum is addition.

A variable is an unknown number shown by using a letter.

Therefore, the answers for quotient and variable in this picture should be switched. However, the negative sign has to be included, so the quotient should be a -9/y.

WILL MARK BEST AND FIRST CORRECT ANSWER THE BRAINLIEST
Kathryn babysits for extra money. She uses the function f(x) = 10x + 18 to calculate her earnings each day, where x represents the number of children she babysits. What is the domain of the function?

A.
{28, 38, 48, . . .}

B.
all positive integers

C.
{18, 28, 38, . . .}

D.
all integers

Answers

Answer:

C I'm pretty sure yeah it's c

One month Dante rented 2 movies and 3 video games for a total of$22 . The next month he rented 4 movies and 8 video games for a total of$57 . Find the rental cost for each movie and each video game.

Answers

Answer:

x = $1.25; y = $6.50

Step-by-step explanation:

Let x be the cost of movies and y be cost of video games.

Month 1 has 2x+3y = 22

So here x = (22-3y)/2 and y = (22-2x)/3

Month 2 has 4x+8y =57

Here x = (57-8y)/4 and y = (57-4x)/8

Now you have two options: Find the y or the x. I will demo the x and you can try the y if you wish.

(22-2x)/3 = (57-4x)/8

176-16x = 171-12x

-4x = -5

x = 1.25

Now with the x found, you plug it into either of the y equations to figure out the other variable.

y = (22-2(1.25))/3

y = 6.5

And to double check:

y = (57-4(1.25))/8

y = 6.5

Which is the solution to 2x - 6 + 4 = 14?

Answers

2x-6+4=14
2x=16
This gives you x=8

Lines L and M are parallel.
3/4
L
2/5
1 6
38° 7
-M
Find : m 2
Enter the number that
belongs in the green box.
O
?]

Answers

Answer:

38°

Step-by-step explanation:

Alternating angles are equal

9-3+2x9 explain it please

Answers

Answer:

Answer is

Step-by-step explanation:

9-3+18

9-21

-12

Answer:

24

Step-by-step explanation:

Follow the order of operations and do the multiplication first

2*9=18

Then go from left to right as it is all addition and subtraction from there

9-3+18

9-3=6

6+18=24

Pls help and Find the length

Answers

The question is wrong because as the given angle is 90, the hypotenuse(11cm) should be greater than 16cm

Answer:

cant solve

Step-by-step explanation:

(sorry im not good at english) because there is no right triagle in which the length of the side of the right angle is greater than the length of the hypotenuse.

Combing like terms 7 th grade

Answers

Answer:

Basically you just add the like terms together. Like terms are terms that have the same power, like 1, or 2 to the second power. x has a power of zero.

Step-by-step explanation:

Brainliest pls, ty

Find the measure of the angle indicated.
45°
A) 135°
C) 125°
B) 115°
D) 50°

Answers

< 45 has the same measure as the supplement of the unknown angle.

Therefore, the unknown angle must be 180 - < 45 = < 135.

The correct answer is A) 135.

a triangle has at least 2 acute angles
(always true, never true, or sometimes true)

Answers

Always true. The sum of the measures of all interior angles add up to 180°.

For example, a right triangle will have a right angle (90°) and two acute angles.

An obtuse triangle has an obtuse angle (with a measure that is greater than 90°) and two acute angles.

The three interior angles of an equilateral triangle have a measure of 60 degrees (acute angles).

An isosceles triangle can have 2 angles with a measure of 30 degrees (acute angles), and an obtuse angle (120°).

Given these examples, we can infer that the correct answer is "Always true."

5. A sculptor has a cube of marble with a volume of 1,000 cubic feet.

a. Write an equation relating s, the length of a side of the cube, and
the volume.

b. What is the length of each side of the cube?

Answers

B po ang sagot tamang tamang po ang tama po iyan

x^2-3y^2(3x-2y)^2-(2x-3y)^2 phân tích thành nhân tử

Answers

Answer:

-3(9y^2-12y^3+4y^4+x^2 - 4xy+3y^2)

Step-by-step explanation:

Pls answer and quick, i'll give brainlist

Answers

Answer:

17.5

Step-by-step explanation:

5*3.5

help me please asapppppp it should be marked in 10mins


the underline digit is 8​

Answers

face value: 8

place value: 10 thousandths place

real value: 80 thousand

(i believe these are correct hope this helps)

GUYS, I NEED HELP PLEASE!!!

if f(x)=10 find x

Answers

and there is no x-intercept. y= 10

Answer:

?????????????????????????????????????????????????????????????????????

the volume of a cube is 8in3 how long is each side

Answers

the answer is 24 that is how long each side is

Help please I tried but I don’t think i got the right answer

Answers

Answer:

1. 175

2. 362.86

3. 1,960

The numbers are measurements of radius diameter and circumference of circles A and B. Circle A is smaller than Circle B which number belongs to which quantity? 2.5, 5, 7.6, 15.2, 15.7, 47.7

Answers

Step-by-step explanation:

a diameter is always twice the radius.

the only pairs in this list, where one number is twice the other, is :

2.5 and 5

7.6 and 15.2

so,

2.5 is the radius of A

5 is the diameter of A

7.6 is the radius of B

15.2 is the diameter of B

15.7 is then the circumference of A (as the smaller of the remaining 2 numbers).

47.7 is the circumference of B.

this is also proven by the formula for the circumference of a circle : c = 2×pi×r

Look at this question

Answers

the answer is joint family

Answer:

it is a joint family.

Step-by-step explanation:

A joint family is a form of family where the grand-parents, father, mother, and children live unitedly under one roof.

Please help me find the value of X for geometry

Answers

Answer:

Step-by-step explanation:

x=70°

How far are Columbia and Charleston

Answers

Answer:

116 miles (186 km)

3. f(x) = – 2 x + 1
101
od
-10-0
6
8 10
8
-10
x-intercept:
y-intercept:
zero:
slope:

Answers

Answer:

The quadratic x2 − 5x + 6 factors as (x − 2)(x − 3). Hence the equation x2 − 5x + 6 = 0

has solutions x = 2 and x = 3.

Similarly we can factor the cubic x3 − 6x2 + 11x − 6 as (x − 1)(x − 2)(x − 3), which enables us to show that the solutions of x3 − 6x2 + 11x − 6 = 0 are x = 1, x = 2 or x = 3. In this module we will see how to arrive at this factorisation.

Polynomials in many respects behave like whole numbers or the integers. We can add, subtract and multiply two or more polynomials together to obtain another polynomial. Just as we can divide one whole number by another, producing a quotient and remainder, we can divide one polynomial by another and obtain a quotient and remainder, which are also polynomials.

A quadratic equation of the form ax2 + bx + c has either 0, 1 or 2 solutions, depending on whether the discriminant is negative, zero or positive. The number of solutions of the this equation assisted us in drawing the graph of the quadratic function y = ax2 + bx + c. Similarly, information about the roots of a polynomial equation enables us to give a rough sketch of the corresponding polynomial function.

As well as being intrinsically interesting objects, polynomials have important applications in the real world. One such application to error-correcting codes is discussed in the Appendix to this module.

x-intercepted: 3/2 and 0
y-intercepted: 0 and 1
zero: not sure
slope: 1

Helppppp plsss!!!!!!!

Answers

Angle R + Angle Q = 180
136 + Angle Q = 180
Measure of Angle Q = 44 degrees
180 - 136 = 44 degrees

what is the slope of the line that passes through the points (3,-5) and (1,-5)

Answers

Answer:

0

Step-by-step explanation:

1. The formula to find the slope of a line given two points is [tex]\frac{y_2-y_1}{x_2-x_1}[/tex]. All we have to do is plug in the values, and then we get our answer.

2. (Solving)

[tex]\frac{-5-(-5)}{1-3}[/tex] [tex]\frac{-5+5}{-2}[/tex] [tex]\frac{0}{-2}[/tex] [tex]0[/tex]

Therefore, the slope is 0.

Write let statements for each expression, then write an equation and SOLVE. (worth 10 points)

The sum of four consecutive integers is 26. What are the four integers?

Answers

Answer:

the answer to your question is 5+6+7+8

Answer:

ok

Step-by-step explanation:

The four consecutive numbers are 5, 6, 7, 8

The smallest number is 5.

Thus their sums equal to 26.

The area of a parallelogram is 64 square feet. If the base is 10 square feet long, what is the height?

Answers

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

Area of parallelogram :

[tex]base \times height[/tex]

[tex]10 \times h = 64[/tex]

[tex]h = \dfrac{64}{10} [/tex]

[tex]h = 6.4[/tex]

Height of a parallelogram is 6.4 feet

Hello!

I need help please. . .

What is -3x = 5x + 6?

Answers/w explanation. ✅

Nonsense, Or not part the question I ask for will be reported.

Thanks~

Answers

Here’s an Algebraic Proof:

Given: -3x=5x+6


Statement Reasoning
—————— ——————
1.) -3x-5x=5x-5x+6 Subtraction Property of Equality.

2.) -8x=6 Simplification by combining Like Terms

3.) -8x/-8=6/-8 Division Property of Equality

4.) x=-0.75 Definition of equality.

Here’s what we did:
In step 1.), we subtracted 5x from both sides to cancel it out from the right side and combine it with the Like Term of -3x on the left side. In step 2.), we subtracted both -3x by -5x to combine them as Like Terms. In step 3.), we divided -8x by itself to cancel it out, and we divided 6 by -8 on the right side. In step 4.), the quotient is -0.75 because 6/-8 = -0.75.

Feel free to give Brainiest!

Answer:

x=–(3/4)

Step-by-step explanation:

Subtract 5x from both sides:

−3x−5x=5x+6−5x

Simplify:

−8x=6

Divide both sides by −8

−8x/−8 =6/−8

Simplify again, result will be:

x=−(3/4)

Kinetic energy can be calculated using the formula KE=1/2mv²,
where m= mass and v= velocity.
Calculate the kinetic energy of an object with mass 5kg moving at a velocity of 4m/s.

Answers

Answer:

40J

Step-by-step explanation:

YOU say 1/2 x 5 x4² ( 4 is velocity. 5 is mass )

it becomes 1/2 x5 x16

then it becomes 1/2 x 80

half of 80 is 40

the answer is then 40 JUOLES

If the measure of angle 2 is 65 degrees, find the measure of angle one .

Answers

The measure is 1/12 of a fraction

Answer:

angle 1 = 115°

Step-by-step explanation:

[tex]\sf{}[/tex]

hope it's helpful to you ☺️

eight hundred tickets were sold for a theater production

Answers

Answer:

280 student tickets

520 adult tickets

Explanation:

I'm guessing this is the question you meant to ask:

Eight hundred tickets were sold for a movie production and the receipts for the performance wear $8600. The tickets for adults and students sold for $12.50 and $7.50, respectively. How many of each ticket were sold?

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