All categories

3 years ago

Help for 10 points!

Mathematics

2 answers:

Arturiano [62]3 years ago

5 0

Answer:

Step-by-step explanation:

[Q-R]+[S-T] =[(7m+3n)-(11-2m)]+[(n+5)-(-m-3n+8)]=

=[7m+3n-11+2m] + [n+5+m+3n-8]=[9m+3n-11] + [4n+m - 3]=

=9m+3n-11+4n+m-3=10m + 7n - 14

jok3333 [9.3K]3 years ago

3 0

Answer:

Step-by-step explanation:

You might be interested in

What is the solution, if any, to the inequality |3x| ≥0?

Yanka [14]

Answer:

the answer is either c or b

4 0

3 years ago

Read 2 more answers

2x²-5x-12=0 (simplify solution set)

Arada [10]

Answer:

x = 4 or x = -3/2

Step-by-step explanation:

To simplify and solve this, let's use the quadratic formula.

So the format of a quadratic equation is supposed look like this:

$ax^2+bx+c=0$

Let's find a, b, c:

a is the coefficient of x^2
b is the coefficient of x
c is the constant term

Now let's solve the equation.

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

2x^2−5x−12=0

For this equation: a=2, b=-5, c=-12

2x^2+−5x+−12=0

Step 1: Use quadratic formula with a=2, b=-5, c=-12.

$x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}$

$x=\frac{-(-5)\pm\sqrt{(-5)^2-4(2)(-12)} }{2(2)}$

$x=\frac{5\pm\sqrt{121} }{4}$

$x=4$ or $x=\frac{-3}{2}$

<u />

<u>Answer:</u>

x = 4 or x = -3/2

7 0

2 years ago

PLEASE HELP ME!!!!! THIS IS DUE IN LIKE 10 MINS!!!!! I WILL MARK BRAINLIEST!!!!! I ONLY HAVE 2 ATTEMPTS LEFT!!!! :(

Oliga [24]

UH “ALL OF THE ABOVE??” OR TRY THE SECOND ONE

8 0

3 years ago

Plz explain how to do this!!!

cestrela7 [59]

Answer:

Step-by-step explanation:

You are trying to find the value of K, so to do that you need to get k by itself (example : K= 3-5 instead of K+5= 3)

So in 1a i would simplify 7k-3k= 4k

then 4k=11

now to get rid of the 4 and get the k alone- you DIVIDE 4k by 4 and divide 11 by 4 cause you need to do it on both sides of the equation, it should look like this.

4k= 11

- = -

4 4

(4k over 4 and 11 over four)

so the answer is k = 2.75 cause 11/4 = 2.75

8 0

3 years ago

Mila is a teacher and takes home 31 papers to grade over the weekend. She can grade at a rate of 8 papers per hour. Write a recu

ziro4ka [17]

So mila can do 8 makers in a hour but due to all the the 31 papers she can get done in 4 because 8 times 4 equals 32

8 0

3 years ago