Evaluate the following expression, when x=-2
2x^2+4x-3
A) 3
B) 3
C) -19
D) 9
Answers
Answer:
-3
explanation;..!!^=^
Answer:
Sana makatulog po Ito sa inyo.
Related Questions
9(2a + 1)
please help
Answers
Answer:
18a +9
Step-by-step explanation:
Brainliest?!?!!?
Step-by-step explanation:
If you want to expand it then,
9(2a+1)
= 18a + 9 (Ans)
how do you complete this task?
Answers
Answer:
-3/2
Step-by-step explanation:
y=mx +b
where m is the slope and b is the y intercept
we just need to rewrite 3x+2y+18=0 to look like that
We need to get y by itself
3x+18= -2y
we need y to be positive and to have no number in front of it (no coeficcent)
y= -3/2x-9
the slope is therefore -3/2
Answer:
[tex]-\frac{3}{2} [/tex]
Step-by-step explanation:
3x + 2y + 18 = 0
Equating it with.
ax + by + c = 0, we find:
a = 3, b = 2, c = 18
Slope of the line [tex] =- \frac{a}{b} =-\frac{3}{2} [/tex]
ada needs to simplify the expression below.
50 minus 20 + 5 times 2.5 divided by 4
Which operation should she perform first?
addition
subtraction
multiplication
division
Answers
Answer:
multiplication
Step-by-step explanation:
PEMDAS
Multiplication
Ryan is studying. The number of minutes he has studied varies directly with the number of calories he has burned. See the
graph below.
How many minutes does ryan study per calorie burned?
What is the slope of this graph?
Answers
Answer:
0.1 minute per calorie burned. Slope is up 0.1 , right 1. or 0.1/1
Step-by-step explanation:
You find a point such as (10,100) or (20,200) then you divide the number of minutes by calorie burned to get minutes per calorie burned.
5/6x+2/3x+4=7
What is x and I REALLY REALLY NEED AN EXPLANATION
Answers
5/6x + 2/3x = 9/6x
9/6x + 4 = 7
9/6x + 4 - 4 = 7 - 4
9/6x = 3
9/6 in decimal form is 1.5 thus
1.5x / 1.5 = 3/1.5
x = 2
Acceleration, distance, and time problem, please help!
Answers
Step-by-step explanation:
(acceleration x time)^2
answer from above divided by 2
“??.?.........what jsjsndjeisiis
Answers
Answer:
10 to the first power
Step-by-step explanation:
yea it should be
Is the ordered pair
(8, 3)
a solution to the equation 2x + y = 14?
Answers
Answer:
35.7t
Step-by-step explanation:
i took the quiz so i now its rhit at least i think
C. Multiply the following integers.
21.7 X (-3) =
22.8 x 9=
23. (-5) (-4) =
24.10 x(-3)=
25. ( -8) * (- 6) =
this is due next hour pls help
Answers
Answer:
21. -21
22. 72
23. 20
24 -30
25. 48
if m∠4= 138°. Find m∠1, m∠2, and m∠3.
please explain how to work this out
Answers
greg wants to buy a video game.the game is 50% off and the original price is $40.00how much will greg have to pay for this video game
Answers
Answer:
its 4.00%
Step-by-step explanation:
Four friends shared 7 chocolate bars. Each of them was given an equal share of the chocolate bars. How many chocolate bars did each person get?
A: 4/7
B : 6/8
C: 1 1/4
D: 1 3/4
Answers
We are given:
There were 7 chocolate bars, evenly shared between 4 friends
Number of Bars one person will get:
Number of bars one person will get = Number of Bars / Number of Friends
Number of Bars = 7 / 4
but since this number does NOT match any of the given options, we will convert it to a mixed fraction
The number of bars one person will get will be [tex]1\frac{3}{4}[/tex], written as a mixed fraction.
Therefore, the correct answer is option D
Answer:
4 friends =7 chocolate
1 friend =7/4 chocolate =1 3/4 part of chocolate.
What is the value of 9 2/3 minus 4 1/5
Answers
Answer:
5 7/15 = D
Step-by-step explanation:
Find a common denominator multiply the many times you did to the denominator to the numerator then subtract.
15 is your common denominator so I would multiply 5 to 2 to get 9 10/15 then I would multiply 3 to 1 to get 4 3/15
Answer:
5 7/15
Step-by-step explanation:
Let's solve your equation step by step.
We will solve it in just 3 simple steps.
Step 1: Converting into Improper Fraction.
Converting into an Improper Fraction is the only way to subtract fractions.
We will turn 9 2/3 into 29/3
First you need to know:
What is a numerator?
What is a denominator?
What is a whole number?
If you know, you can skip this part.
A denominator is the lower number below the line in a fraction. (ex. 2/3 <-- "3" is the denominator)
A numerator is the higher number above the line in a fraction. (ex. 2/3 <---"2" is the numerator)
A whole number is a number that has no fraction or decimal. (ex. "3" or "2" or "7".)
With that said, let's solve.
In 9 2/3, "9" is the whole number. "2" is the numerator, and "3" is the denominator.
We always multiply the whole number by the denominator, then we add the numerator.
So:
(9 x 3) + 2 = 29
Then, we keep the denominator the same. "3".
We then get:
29/3. Which is what we want.
Let's repeat the same steps with 4 1/5.
(4 x 5) + 1 = 21
Keep the denominator : 21/5
Now we are on Step 2.
We currently have 29/3 - 21/5
But we don't have the denominators the same.
We need to find the LCD (Least Common Denominator of 3 and 5.
Since these numbers are less than 10, my trick is to just multiply them together. 3 x 5 = 15, simply put.
Now, let's change all the denominators to 15. Now let's change the numerators.
For the fraction that had 3 as the denominator, let's multiply 5 to it. And for the fraction that had 5 as the denominator, let's multiply 3 to it.
We then get :
145/15 - 63/15
We are now on Step 3.
This step is simple. Just subtract 145 - 63 because the denominators are the same.
145 - 63 = 82
We now have 82/15.
This is the answer, but we always need to simplify it.
How many times can 15 fit into 82? 5. But we have 7 left over.
So we now have :
5 7/15
Marking people as BRIANLIST please help me
Answers
Answer:
I think it would be 214
Step-by-step explanation:
34+34=68
68+34=102
102+34=154
154+60=214
Answer:
yeah u right 214
Step-by-step explanation:
just do the correct steps
what is x + 10 - (2x +5)
Answers
Answer:
−x+5
Step-by-step explanation:
Answer:
-x + 5
Step-by-step explanation:
-2x + x = -x
10 -5 = 5
la potencia de un motor Mercedes Benz es de 120 Hp,(1Hp= 746 w) ¿ que fuerza realiza el motor para que el auto alcance una velocidad de 30m/s.
prrr favor ayudame
Answers
Answer:
3627181992838(1331)323-242_4224$78
HURRY!! 22.7-3w=3.5. Solve for w
Answers
Answer:
Step-by-step explanation:
-3*w=3.5-22.7
w= -19.2/-3
w= 6.4
you divide each side by factors that don’t contain a variable
solve (1/4) 3z-1=16z+2(64z-2)
Answers
Answer: z
=
0.375
Step-by-step explanation:
Answer:
0.375
Step-by-step explanation:
PLEASE HELP ITS URGENT
DONT GUESS
WILL MARK BRAINLIEST
Answers
Answer:
A) 1/2(3)(2.6)=3.9
B) 1/2(3)(5)=7.5
C) 7.5x3=22.5
D) 22.5+3.9=26.4
Step-by-step explanation:
A) 1/2(3)(2.6)=3.9
B) 1/2(3)(5)=7.5
C) 7.5x3=22.5
D) 22.5+3.9=26.4
how do i write the difference of a number x and 2 is 7 as an equation
Answers
You can quiet literally write the question as it is.
The difference of a number x and 2 is 7.
The difference of a number x and 2 can be written as x-2
is can be written as equal or =
This statement can be translated as x-2=7.
It is as simple as that!
I have to show my work using the LCM strategy or fraction models.
Answers
Answer:
1/2 or 0.5 in decimal
Step-by-step explanation:
you would want to make the 3/10 eqale to 20/100 like it has to have the same denominatior which is 10x10 and 3x10. because 10x10 eqal to 100, and what you do to the bottom you have to do the same on the top. and then you add which becomes 30/100+20/100=50/100 and 50/100 =1/2 if you simplfiy.
What value of y makes this true?
25 - y< 15
Answers
Answer:
Anything that is 11 or greater
Step-by-step explanation:
please make brainliest
Answer:
y is greater than 10
Step-by-step explanation:
(10, undefined)
Help me pls pls pls
Answers
Answer:
F, J, K
Step-by-step explanation:
The other choices are regarded as expressions not equations, in which you can find the value of the the given variable.
A store is having a clearance special and every item is 10% off. What is the sale price of a $210 suit?
Answers
Answer:
$189
Step-by-step explanation:
210 has to be multiplied by the decimal form of the percentage, 0.10, which equals to 21. This will be subtracted from 210, giving you an answer of $189.
A boat traveled at a speed of 84.4 mph for a duration of 15 minutes. What was the distance (in miles) it traveled?
Answers
-4 > -2n
What could n be??
Answers
Answer:
Isolate the variable by dividing each side by factors that don't contain the variable.
Inequality Form:
n>2
Interval Notation:
(2,∞)
Find the area of the composite figure.
Answers
Step by step:
Find A; 6x4 =24
Find B; you have to subtract 2 from 3.8 to find the length of the dashed line. 1.8x3.5=6.3
Find C; 3.8x3=11.4.
Add together; 11.4+6.3+27=41.7
if lana bought cigarettes for $3.00/pack X 7 packs/week X 52 weeks/year X 10 years, how much would it be?
EASY QUESTION OF THE DAY (whoever answers first gets brainly!)
Answers
Answer:
she would be spening over a thousand dollars
Step-by-step explanation:
Asnwer:
10,920$
Step-by-step explanation:
So if 3.00$ is for one pack and she wants 7 packs then it would be 21$.
But if we also multiply it by 52 weeks then that would be 1,092$.
Then if she's buying that for 10 years then we multiply 10 x 1,092$ which would equal 10,920$
(I'm not completely sure if I did the math right but I'm 90% sure I did because that's what the question is asking.)
Solve. You must factor first.
8n^2-29n + 15 = 0
Please show work
Answers
8n=5. n=3
n=5/8.
12 x 25 + 2-10 what’s is the answer bishesss
Answers
Answer:
292
Step-by-step explanation:
Answer:
292
Step-by-step explanation:
12X25=300
300+2=302
302-10=292
PEMDAS
also used calculator
look it up on internet