Solve the following quadratic equation by using the quadratic formula.
-2x^2 - 3x + 4 = 0
(Answers are in photo)
10 points!!!
please explain how you got your answer.
Answers
Answer:
B. [tex]\frac{-3}{4}[/tex]±[tex]\frac{\sqrt{41} }{4}[/tex]
Step-by-step explanation:
First, substitute the equation into the quadratic formula.
[tex]x=\frac{b+-\sqrt{(b^{2} )-4(a)(c)} }{2a}[/tex]
x=[tex]\frac{-3+-\sqrt{(3)^2-4(-2)(4)} }{4}[/tex]
Solve for x.
x= [tex]\frac{-3+-\sqrt{9+32} }{4}[/tex]
x=[tex]\frac{-3+-\sqrt{41} }{4}[/tex]
The answer is x= [tex]-\frac{3}{4}[/tex]±[tex]\frac{\sqrt{41} }{4}[/tex]
Related Questions
Solve: -3x + 8 = x + 28
Answers
Answer:
x = -5
I hope this helps!
Answer:
-5
Step-by-step explanation:
I really hope this helps
Jackie and Luke are working on a project for social studies.
They create a slide show with 250 slides. if they worked on it for 8 hours,
How many slide did they created per hour?
Answers
Answer:
31.25 slides per hour.
Step-by-step explanation:
250 slides ÷ 8 hours = 31.25 slides per hour
You're welcome!
Answer:
You are trying to find how many slides they did per hour so the answer to that would be 31.25
Step-by-step explanation:
250 ÷ 8 = 31.25
Andy works at a grocery store. The manager of the store would like Andy to set up a display of apples. Part of the display will include bags of apples. If there are 39 pounds of apples in the back of the store, how many bags of apples can Andy make for the display? each bag has 1 1/2 pound
Answers
Answer:
Andy can make 26 bags for the display.
Step-by-step explanation:
Quantity of apples in the back of the store = 39 pounds
Quantity of apples in one bag = [tex]1\frac{1}{2}[/tex] pounds
Here,
[tex]1\frac{1}{2}=\frac{2(1)+1}{2}=\frac{3}{2}[/tex]
Number of bags = Quantity of apples in the back of the store / Quantity of apples in one bag
[tex]=\frac{39}{1\frac{1}{2} }=\frac{39}{\frac{3}{2} }=39(\frac{2}{3})=26[/tex]
So, Andy can make 26 bags for the display of apples.
P(x)=5x^2-3x+7(x=1)
Pls
Answers
Answer:
9
Step-by-step explanation:
Given
p(x) = 5x² - 3x + 7 ← substitute x = 1
p(1) = 5(1)² - 3(1) + 7 = 5(1) - 3(1) + 7 = 5 - 3 + 7 = 9
Fatima Sheroud sells children's clothing for The
Grasshopper Shoppe. She is paid weekly on a straight
commission of 4% on sales of $5,000.00 or less and 5% on sales in
excess of $5,000.00. One week Fatima had a gross pay of $594.50.
What were her total sales for that week
Answers
Answer:
7890
Step-by-step explanation:
(5000*4%)+(x*5%)=594.50
200+(x*5%)=594.50
x*5%=394.50
x=7890
FIRST ANSWER GETS CROWNED BRAINLIEST!!!
If the slope of a line is 1/2, find x when (-4, 12) and (x, 5) ?
Please show formula.
Answers
Answer:
x = -18
Step-by-step explanation:
Well you just have to do the this formula to find the slope
[tex]\frac{y2 - y1}{x2 - x1}[/tex] Plug in
[tex]\frac{5 - 12}{x - -4 }[/tex] = [tex]\frac{-7}{?}[/tex]=[tex]\frac{1}{2}[/tex]
So we know x will have to be a negative to get 1/2
I would think x = -18 because -18 - -4 = -14 so it would look like this
[tex]\frac{5 - 12}{-18 - -4}[/tex] = [tex]\frac{-7}{-14}[/tex] =[tex]\frac{1}{2}[/tex]
When you further simplify -7/-14 you get 1/2
A box of chocolate includes 24 chocolate pieces. If 1/4 of the chocolates contains nuts, how many chocolates do not contain nuts?
Answers
Answer:
18
Step-by-step explanation:
24 * 1/4 = 6
24-6 = 18
help me i need it
!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
Answer:
S, BB, J
Step-by-step explanation:
Because you are going greatest (positive) to least (negative)
Highest to lowest
Need help ASAP Tysm!!
. 。 • ﾟ 。 .
. . 。 。 .
. 。 ඞ 。 . • •
ﾟ Black was not An Impostor. 。 .
' 1 Impostor remains 。
ﾟ . . , . .
Answers
Answer:
854
Step-by-step explanation:
Find the area of triangle then the square also I was ACTUALLY THE IMPOSTER AHAHAHAHAHAHHAHA
Please help giving 10 points!
Which statements about the graphs of the equations y = 2x + 4 and y = −x + 4 are true? Select all that apply.
A. The graphs intersect the x-axis at the same point.
B. The graphs intersect the y-axis at the same point.
C. The graphs have different slopes.
D. The graphs are parallel lines.
Answers
Answer:
The answer is B and c.
Step-by-step explanation:
first thing you need to do is look at slopes
the slopes are different then look at the y intersects there the same
and finally they both intersect at the same point.
the correct answer is B and C.
What is the value of K? k=___
Answers
Answer:
I'm pretty sure the answer is 2
Step-by-step explanation:
Answer:
Step-by-step explanation:
In triangle LON, <O = 90°
According to Pythagoras' Theorem
(Hyp)² = (Base)² + (Perp)²
m² = 4² + 8²
m² = 16 + 64
m² = 80
Taking square roots on both sides
√m² = √80
m = 8.94
In triangle LMN, <N = 90°
According to Pythagoras' Theorem
(Hyp)² = (Base)² + (Perp)²
(8 + k)² = l² + 4²
Please help!!!!!!!!!
Answers
Answer:
bottom one
Step-by-step explanation:
need help on this asap pleasee:((
Answers
Answer:
hatdogkajsidnevwjqo
Ella wants to buy forks and spoons for her new house. Forks cost 1$ each and spoons cost 4$ each. She spent 50$ and bought 20 items in total. Which equations represent this word problem?
Answers
Answer:
50 = 1(x) + 4(y)
Step-by-step explanation:
I'm not too sure about this answer, its more of a guess but I hope this helped :)!
X = amount of forks bought
y = amount of spoons bought
fastest land animal in the world answers
Answers
Answer:
Cheetah
Step-by-step explanation:
The cheetah or the Acinonyx jubatus can run up to 50 - 80 mph on land
Brainliest?
A bottle of water is 2/3 full. You drink 1/2 of the water. Use a model to find the portion of water that you drink.
Answers
Answer:
you drank 1/3 of the bottle
Step-by-step explanation:
split the 2/3 in half
Anna bought 8 tetras and 2 rainbow fish for her aquarium. The rainbow fish cost $6 more than the tetras. She paid a total of $37. Find the cost of a tetra.
Answers
Answer:
Step-by-step explanation:
8 tetra and 2 rainbow
2*8=16
16+6=22
16+22=38
your answer is undefinable unless you want it in the hundredths
Answer:
its either 3.125 or 3.875
Step-by-step explanation:
sorry
Additive inverse of 0.25
Answers
Step-by-step explanation:
it's it's a photo hope this will help you
Sue used to have a square garage with 286 ft squared of floor space. He recently built an addition to it. The garage is still a square, but now it has 50% more floor space. What was the length of one side of the garage originally? What is the length of one side of the garage now? What was the percent increase in the length of one side?
Answers
Answer:
New Length = 20.71 feet
Original Length = 16.91 feet
22.47%
Step-by-step explanation:
Original area of the square garage = 286 ft squared
Addition of 50% more space
New area of the garage = 286 + .50(286)
= 286 + 143
= 429 square feet
What was the length of one side of the garage originally?
Original area of the square garage = 286 ft squared
Area of a square = length^2
286 = length^2
Find the square root of both sides
√286 = √length^2
Original Length = 16.91 feet
What is the length of one side of the garage now?
New area of the garage = 429 square feet
Area of a square = length^2
429 = length^2
Find the square root of both sides
√429 = √length^2
New Length = 20.71 feet
What was the percent increase in the length of one side?
(New length - old length) / old length × 100
= (20.71 feet - 16.91 feet) / 16.91 feet × 100
= 3.8 feet / 16.91 feet × 100
= 0.2247 × 100
= 22.47%
The number 0.003 writte in scientific notation is 3x10^3. why is the exponent negative?
Answers
Answer:
Answer is the explanation below
Step-by-step explanation:
The exponent is negative because, as a positive exponent means to multiply, a negative exponent means to divide.
Given f (x)= 5 (2 - x), what is the value of f(-6)
Answers
Answer:
f(-6)=40
Step-by-step explanation:
f(x)=5(2-x)
f(x)=10-5x
f(-6)=10-5*(-6)
f(-6)=10+30
f(-6)=40
Joe wants to buy a skateboard but he doesn't know if he has enough money. THe price of the skateboard is $85 and the sales tax is 6%. What is the sales tax for the skateboard in dollars in cents.
Answers
Answer: $5.1
Step-by-step explanation:
From the question, we are informed that thee price of the skateboard is $85 and that the sales tax is 6%.
To calculate the sales tax for the skateboard in dollars in cents, we find 6% of$85. This will be:
= 6% of $85
= 6% × $85
= 6/100 × $85
= 0.06 × $85
= $5.1
= 5 dollar, 10 cents
what is the domain and range of this graph ?
Answers
Answer:
Domain: [-3, 2]
Range: [-3, 3]
Step-by-step explanation:
Domain is the set of x-values that can be inputted into function f(x).
Range is the set of y-values that are outputted by function f(x).
We see that our x-values span from -3 to 2. Since they are both closed dots, they are included in the domain:
[-3, 2] or -3 ≤ x ≤ 2
We see that our y-values span form -3 to 3. Since they are both closed dots, they are included in the range:
[-3, 3] or -3 ≤ x ≤ 3
"the advrage a of 2 numbers c and d is equal to half the sum of c and d " this whole qustion confuses the I am basically supposed to put it into a equation but it's just not clicking for me can you help?
Answers
Answer:
[tex] \frac{c + d}{2} [/tex]
Step-by-step explanation:
this is the equation used to find the average of two numbers.
Solve for the variable in the following proportion
m/1/3 = 10/1 2/3
50
2
5
3/5
please help?
Answers
Answer:
the answer is 5
Step-by-step explanation:
-6(-5x-1) = 5x+20
WHAT DOES X EQUAL??
Answers
Step-by-step explanation:
30x +6= 5x+20
30x -5x=20-6
25x=14
25x÷25=14÷25
x=0.56
Please answer I promise I will mark you brainiest
Answers
Answer:
1. A=907.92
2. A=113.1
3. A=37.5
P=35
4. A=234
P= 75.6
Step-by-step explanation:
Answer:
DID YOU REALLY NEED TO ASK THIS!!!!!!!!!!!!
Step-by-step explanation:
A car travels at a constant speed. The graph above shows the car's travels.
What does the point on the graph mean? Please write in complete sentences.
Answers
Answer:
The point shows the distance, 140 miles, driven in two hours.
Read where it says Let C be
Thank you for helping me
Answers
Answer:
v=8
Step-by-step explanation:
This size running track is usually called a 400-meter track. However, if a person ran as close to the "inside" as possible on the track, they would run less than 400 meters in one lap. How far away (in meters) from the inside border would someone have to run to make one lap equal exactly 400 meters?
Answers
Answer:
They would have to be in the very center of the track
Step-by-step explanation:
Look up how wide each lane of a track is and then times that by 2.5
