Find all solutions for X and check. (different from the other question I asked earlier) thanks!

Answers

Answer 1

Answer:
$\displaystyle \n 17) \n x(5x-10)=0 \n x = 0 ~~\texttt{or}~~5x-10 = 0 \n x_1 = \boxed{0} \n \n x_2 = (10)/(5) =\boxed{2} \n \texttt{Check: } \n x_1 = 0~~\Longrightarrow ~~ 0(5\cdot 0 - 10) = 0 \cdot (-10) = 0 \n x_2 = 2~~\Longrightarrow ~~ 2(5\cdot 2 - 10) = 2(10 - 10) = 2 \cdot 0 = 0$

$\displaystyle 18) \n x^2 + 7x-18 = 42 \n x^2 + 7x-18 - 42 =0 \n x^2 + 7x-60 =0 \n .~~~~~7x = 12x - 5x \n \underbrace{x^2 + 12x} -\underbrace{5x - 60} = 0 \n \n x(x+12) -5(x+12)=0 \n (x+12)(x-5)=0 \n x + 12 = 0 ~~\texttt{or}~~x-5 = 0 \n \n x_1 = \boxed{-12} \n x_2 = \boxed{5} \n \n \texttt{Check: } \n x1 = -12 ~~\Longrightarrow~~ (-12)^2 + 7\cdot (-12)-18 = 144-84-18 = 42 \n \n x2 = 5 ~~\Longrightarrow~~ (5)^2 + 7\cdot (5)-18 = 25+35-18 = 42 \n \n$

Related Questions

What quadrilaterals have all the attributes of a rectangle
3.78 divided by 0.9
I/5+9=17 two step equations
PLEASE HELP!!!Which pair of rectangles is similar? A. 1 rectangle is 3 and 8 2 rectangle is 2 and 6 B. 1 rectangle is 3 and 6 2 rectangle is 2 and 9C. 1 rectangle is 3 and 8 2 rectangle is 2 and 5D. 1 rectangle is 3 and 9 2 rectangle is 2 and 6
What are the multiples of 37?

A coin is tossed and a number cube labelled 1 to 6 is rolled. How many likely outcomes are there? Use a tree diagram

Answers

H T
/ / / \ \ \ / / / \ \ \
1 2 3 4 5 6 1 2 3 4 5 6

12 different outcomes
since each side can land with one number

Find the value of x2 − 7x + 9 when x = 6.

The value of the expression when x = 6 is

Answers

Answer:

-21.

Step-by-step explanation:

(6)2-7(6)+9

--> 6x2= 12

--> 7x6= 42

Rewrite the expression:

--> 12-42+9

Solve:

--> 12-42= -30

--> -30+7= -21

The sum of two consecutive even interfere is -10. what is the large integer?

Answers

-4 —> -4 + -6 = -10, so -4 is greater as it is less negative

What is 42% of 120.00?

Answers

$p\%=(p)/(100)\n\n42\%=(42)/(100)\n\n42\%\ of\ 120.00\to(42)/(100)\cdot120.00=42\cdot1.20=50.40\leftarrow answer$

The answer to this problem is 50.4.

Triple 3 and then add double 8

Answers

I'd have to disagree with RedstoneKing.

Triple 3 means 3 x 3.
Double 8 means 8 x 2
Add means +
Therefore,
(3 x 3) + (8 x 2) =
9 + 16 =
25

25 is the answer, i believe!

6+6+6+8+8=31 that's the answer to your problem

Please help and explain. :)

Answers

a. Okay, so you multiply the 4.7 and 2.9 together, and then add the exponents

13.63 * 10^10

But we are not done. There can only be one digit in front of the decimal point. So, you move the 13.63 back one place so 1.363. But we have to do this to both sides, so the answer is 1.363 * 10^11.

b. Now you divide the 5.8 and 2, and subtract the exponents.

2.9 * 10^-5

The negative exponent is fine in this case if you were wondering.

c. Expand the scientific notation to 1500, then add the 2491 and then put that in scientific notation is what I would do. You can also express 2491 in scientific notation and add them. Either way you will get 3.991 * 10^3

d. Same thing here except with subtraction. The answer is 6.5 * 10^-4.

This was a little long, sorry. Let me know if you need further explanation. I hope this helps.

Other Questions

A science test, which is worth 100 points, consists of 24 questions. Each question is worth either 3 points or 5 points. If x is the number of 3-point questions and y is the number of 5-point questions, the system shown represents this situation. x + y = 24 3x + 5y = 100 What does the solution of this system indicate about the questions on the test? A] The test contains 4 three-point questions and 20 five-point questions. B]The test contains 10 three-point questions and 14 five-point questions. C]The test contains 14 three-point questions and 10 five-point questions. D]The test contains 20 three-point questions and 8 five-point questions.

What is the midpoint between 0.03 and 0.04

I need help I’m not sure

What’s 4(-8x+5)-(33x-26)=