Answer:
A. a=2, b=1, c=5
Step-by-step explanation:
Given:
2x^2+5=-x
Rearrange to have the format
ax^2+bx+c=0
2x^2+5=-x
Add x to both sides
2x^2 + 5 + x = - x + x
2x^2 + 5 + x = 0
2x^2 + x + 5 = 0
ax^2 + bx + c = 0
Where
a= coefficient of x ^2
b = coefficient of x
c= constant
Therefore,
a= 2
b = 1
c= 5
A. a=2,b=1,c=5 is the correct answer
Answer:
[tex]\huge \boxed{\mathrm{A.} \ a=2, \ b=1, \ c=5}[/tex]
[tex]\rule[225]{225}{2}[/tex]
Step-by-step explanation:
2x² + 5 = -x
The quadratic equation is in the form :
ax² + bx + c = 0
Rewriting the equation by adding x to both sides :
2x² + 1x + 5 = 0
The value of a is 2.
The value of b is 1.
The value of c is 5.
[tex]\rule[225]{225}{2}[/tex]
Solve for x: 4 over 5 x + 4 over 3 = 2x x =
Answer Write your answer as a fraction in simplest form.
(write x = 'answer')
Answer:
over 5 x + 4 over 3 = 2x
can't find x
Hi McDa:
Here's a couple hints. (I have no idea what you already understand. Please check out our posting guidelines.)
Express the Natural number 3 in Rational form 3/1.
4
5
x
+
4
3
1
=
2
x
Regarding the left-hand side above, have you learned the property that says we may multiply by the reciprocal of 3/1, instead of dividing by 3/1?
Step-by-step explanation: Incorrect? Let me know!
What is the solution to the given inequality? one-half minus one-fourth x is greater than or equal to negative one-fourth x –1 x ≤ –1 x ≥ 3 x ≤ 3
Answer:
x ≤ 3
Just took the assignment, i hope you have a good day :)
Answer:
D.x ≤ 3
Step-by-step explanation:
Y=2x +7
Find the x interception
Answer:
Step-by-step explanation:
hello :
the x interception for Y=2x +7 when Y=0 means : 2x +7=0
so x = -7/2
A grocery store has small bags of apples for 5$ and large bags of apples for 8$. If you buy 6 bags of apples and spend 45$, how many of each bags did you buy?
Answer:
He bought 1 small bag and 6 large bags.
Step-by-step explanation:
We can set up 2 equations with the given information.
5x+8y=45
x+y=6
We can rearrange the second equation to solve for x.
x=6-y
Now we substitute x for 6-y in the first equation
5(6-y)+8y=45
30-5y+8y=45
30+3y=45
y+10=15
y=5
x=1
He bought 1 small bag and 6 large bags.
Look at image for question
Answer:
P = 19.76 unitsStep-by-step explanation:
1. Finding [tex]\overrightarrow{AB}[/tex] (or [tex]\overrightarrow{BA}[/tex]):
[tex]\overrightarrow{AB}=\overrightarrow{OA}-\overrightarrow{OB}= \left[\big5\atop\big3\right]-\left[\big2\atop-\big5\right]= \left[\big5-\big2\atop\big3-(-\big5)\right]=\left[\big3\atop\big8\right][/tex]
2. Calculating length of [tex]\overrightarrow{OA}\,,\ \overrightarrow{OB}\ \text{and}\ \overrightarrow{AB}[/tex]:
[tex]|\overrightarrow{OA}|=\sqrt{5^2+3^2}=\sqrt{25+9}=\sqrt{34}\approx5.831\\\\ |\overrightarrow{OB}|=\sqrt{2^2+(-5)^2}=\sqrt{4+25}=\sqrt{29}\approx5.385\\\\ |\overrightarrow{AB}|=\sqrt{3^2+8^2}=\sqrt{9+64}=\sqrt{73}\approx8.544[/tex]
3. Calculating perimeter:
[tex]P=|\overrightarrow{OA}|+|\overrightarrow{OB}|+|\overrightarrow{AB}|=\sqrt{34}+\sqrt{29}+\sqrt{73}\approx5.831+5.385+8.544=19.76[/tex]
26. Given the point A(-2,4) translate (x,y) → (x – 4, y - 3) and then reflect over the line y = -x.
What are the coordinates of the final image? (4 points)
Math
Greetings from Brasil...
Here is the graphical explanation in the annex.
A = (-2; 4)
A' = (-2 - 4; 4 - 2) = (-6; 1)
After reflection on F(X)
A'' = (-1; 6)which two values of X are roots of the polynomial below?
Answer:
C and D
Step-by-step explanation:
As determinant of this quadratic equation is given by-
(-b±√(b²-4ac))/2a
On Friday, the temperature was 82°F. The temperature changed by –2°F on Saturday, and then it changed by 5°F on Sunday. What was the temperature on Sunday? How did the temperature change?
Answer:
the temp on Sunday was 85, it changed by going down 2 degrees, and up 5 degrees
Step-by-step explanation:
when it says -2 degrees F its basically saying subtract 2, and then go on and add 5
Answer:
it was 85 goes up by 3
Step-by-step explanation:
Of the students at Milton Middle School, 110 are girls. If 50% of the students are girls, how many total students are there at Milton middle school
Answer:
220
Step-by-step explanation
Plz, help ASAP!!! WILL MARK U BRAINLIST IF UR ANSWER IS CORRECT Question #2
Answer:
Graph 2 contains a function, but graphs 1 and 3 do not (1st Option).
Step-by-step explanation:
In order for a graph to be a function, it must pass the Vertical Line Test. Every x-value must have it's own y-value.
This means that 2 different y-values cannot have the same x-value.
△ABC and △JKL have corresponding equal angles. Side length BC is twice the length of side KL. Which statement is true? A. △ABC and △JKL are similar. B. △ABC and △JKL are congruent. C. There is not enough information to know if they are similar or not. D. △ABC is a dilation of △JKL by a factor of 12
Answer:
A. △ABC and △JKL are similar.
Step-by-step explanation:
Since three angles of one triangle are congruent to three corresponding angles of the other triangle, the triangles are either congruent or similar. Since the side of one triangle is twice the length of the corresponding side of the other triangle, then the triangles are not congruent, but they are similar.
A. △ABC and △JKL are similar.
Answer:
. △ABC and △JKL are similar.
Step-by-step explanation:
solve equation by taking square roots n^2+4=40
Answer:
n = ±6
Step-by-step explanation:
n² + 4 = 40
n can be solved by finding the square root
n² = 40 - 4
n² = 36
n = √36
n = ±6
Write the equation of a line that is perpendicular to y= 2/3x + 3 and passes through the point (4, -8).
Answer:
Step-by-step explanation:
Perp. : -3/2
y + 8 = -3/2(x - 4)
y + 8 = -3/2x + 6
y = -3/2x - 2
please help lots of points
Answer:
see below
Step-by-step explanation:
The area is given by
A = l*w
A = (4x-1) ( 3x+6)
FOIL
first 4x*3x =12x^2
outer 6*4x = 24x
inner -1*3x = -3x
last -1 *6 = -6
Add together
12x^2 +24x-3x-6
12x^2 +21x-6
Answer:
The area is given by
A = l*w
A = (4x-1) ( 3x+6)
first 4x*3x =12x^2
outer 6*4x = 24x
inner -1*3x = -3x
last -1 *6 = -6
Add together
12x^2 +24x-3x-6
12x^2 +21x-6
Represent the following sentence as an algebraic expression, where "a number" is the
letter x.
The difference of 3 and a number.
Answer: 3 - x
Step-by-step explanation: With
Subtraction be careful. 3 - x is not the same as x - 3. You have to keep the values given in order.
Identify the incorrect Algebra forms that multiplication is represented in the expressions 5 times 3x.
A 5(3x)
B (5) x (3x)
C (5)3x
D 5(3)(x)
Answer:
5 x 3x = A 5(3x)
Step-by-step explanation: () = multiply
EX: 6(8) = 48
A 3/4 pound box contained 36 fruit
tarts. How many tarts would be in a
one-pound box?
Powers of 10 with positive exponents are:
less than 1
greater than 1
Answer:
greater than 1
Step-by-step explanation:
A health club charges an initiation fee of $50. Members then pay $45 per month. You have $400 to spend on a health club membership. For how many months can you afford to be a member? Let n represent the number of months you can pay for a membership.
Answer:
8 monthsStep-by-step explanation:
In this problem we must first of all write the inequality that describes the problem.
Given that
1. you have a limit of $400
2. there is an initial fee of $50
3. monthly payment is $45
let the number of months be n
therefore
[tex]50+45n\leq 400\\\\45n\leq 400-50\\\\45n\leq350[/tex]
Divide both sides by 45 we have
[tex]n\leq \frac{350}{45} \\\\n=\frac{70}{9} \\\\n= 7.77\\\\[/tex]
approximately you are going to be member for 8 months
If I am in Vermont, then I am in the North.
Write the converse of the conditional. Choose the correct answer below.
O A. If I am not in Vermont, then I am not in the North.
O B. If I am in the North, then I am not in Vermont.
C. If I am not in the North, then I am not in Vermont.
D. If I am in the North, then I am in Vermont.
Robert and his friends are going into a grocery store. How much would it cost to buy 4 bananas and 5 peaches if each banana costs $0.40 and each peach costs $0.75? How much would it cost to buy 4 4 bananas and 5 5 peaches if each banana cost $ x $x and each peach cost $ y ? $y
Answer:
4*0.40+5*0.75=5.35
Step-by-step explanation:
Answer:
like so i could get points pls, answer is in screenhot lol
Step-by-step explanation:
Please help me solve this geometry proofs question quickly!
Answer:
AA Theorem
Step-by-step explanation:
In order to prove AB/AE = AC/AD, we need to prove that the triangles are similar. The AA Theorem says that if two triangles share two congruent angles, then the triangles are similar. The given states that ∠ABE ≅ ∠ACD, which means these two angles are congruent.
For the second angle, both triangles have the angle by point A. These angles can be written as ∠A ≅ ∠A. These angles are congruent because of the reflexive property.
Because we have proven these triangles to be simliar, we know the proportion AB/AE = AC/AD is correct because corresponding sides of similar triangles are proportional.
a line of best fit for the data is y=0.9x-4.5, where x represents age in year, and in years, and y represents hourly pay, in dollars.Based on the data, what is the best prediction for the hourly pay of a 25 year old?
Answer:
$18
Step-by-step explanation:
Given:
y = 0.9x - 4.5
Where,
x = age in years
y = hourly pay in dollars
what is the best prediction for the hourly pay of a 25 year old?
That is, find y when x=25
y = 0.9x - 4.5
= 0.9(25) - 4.5
= 22.5 - 4.5
= 18
y = $18
The prediction for the hourly pay of a 25 year old is $18
Answer:
$18:00
Step-by-step explanation:
Thank You To The Guy Above Me
what is the square root of 655.36
Answer: 25.6
Step-by-step explanation: Have an Amazing Day :)
Answer:
25.6 this will be the answer
Step-by-step explanation:
Hope it helps
Which statement is supported by the histograms? The two data sets have the same distribution and same range. The two data sets have the same distribution but different ranges. The two data sets have different distributions but the same range. The two data sets have different distributions and different ranges.
Answer:
The two data sets have different distributions and different ranges.
Step-by-step explanation:
When you subtract for both of the ranges they are different numbers. So that's the second part. The numbers along the bottom are different too so that is the different distributions.
Answer:
The two data sets have different distributions and different ranges.
Step-by-step explanation:
The shape of the data for German male adult heights is skewed left, but the shape of the data for female adult heights is close to symmetric. So, the two data sets have different distributions.
Each data set has the same minimum height of 145 centimeters. However, the maximum male adult height is 220 centimeters, and the maximum female height is 185 centimeters. So, the two data sets have different ranges.
If B is the midpoint of AC, solve for x, and find the lengths of AB, BC, and AC.
Please show all work and not just the answers.
Answer:
x = 2
AB = 15
BC = 15
AC = 30
Step-by-step explanation:
Given that B is the midpoint of AC, then AB = ½ of AC.
AB is given as 3(3x - 1),
AC = 5(2x + 2),
Therefore:
[tex] 3(3x - 1) = \frac{1}{2}*5(2x + 2) [/tex]
Solve for x
[tex] 9x - 3 = \frac{5}{2}(2x + 2) [/tex]
Multiply both sides by 2
[tex] 2(9x - 3) = \frac{5}{2}(2x + 2)*2 [/tex]
[tex] 18x - 6 = 5(2x + 2) [/tex]
[tex] 18x - 6 = 10x + 10 [/tex]
[tex] 18x - 10x = 6 + 10 [/tex]
[tex] 8x = 16 [/tex]
Divide both sides by 8
[tex] x = 2 [/tex]
[tex] AB = BC = 3(3x - 1) [/tex]
Plug in the value of x
[tex] AB = BC = 3(3(2) - 1) [/tex]
[tex] = 3(6 - 1) = 3(5) = 15 [/tex]
[tex] AC = 5(2x + 2) [/tex]
[tex] AC = 5(2(2) + 2) [/tex]
[tex] AC = 5(4 + 2) = 5(6) = 30 [/tex]
There were 7 songs on one side of a record. It took 20 minutes and 18 seconds to play the side. What is the average number of seconds per song?
i will mark brainliest
Answer:
174 seconds.
Step-by-step explanation:
So there was a total of 7 songs.
And it took a total of 20 minutes and 18 seconds to play them all.
20 minutes and 18 seconds is the same as 20(60)+18=1218 seconds.
Thus, the average number of seconds per song was:
[tex]1218/7=174[/tex]
174 seconds,
or about 2 minutes and 54 seconds.
hey please help!! Thank you <33
Answer:
4+6j
Step-by-step explanation:
[tex]4+(6\times j)\\4+6j[/tex]
In 201620162016, the city of Rio de Janeiro had a population density of 5377\,\dfrac{\text{people}}{\text{km}^2}5377 km 2 people 5377, start fraction, start text, p, e, o, p, l, e, end text, divided by, start text, k, m, end text, squared, end fraction . What was the population density of Rio de Janeiro in people per square meter?
Complete question:
In 2016, the city of Rio de Janeiro had a population density of 5377 people/km2.
What was the population density of Rio in people per square meter?
Answer:
0.005377 peope/m²
Step-by-step explanation:
Given that :
Population density of Rio in 2016 = 5377 people/km²
To obtain population density in people per square meter, we convert 5377people/km² to people per m²
Recall:
1000 m = 1km
Hence,
5377 people/km² = 5377 people / (1000²)m
= (5377/1000000)people/m²
= 0.005377 peope/m²
Answer:
0.005377
Step-by-step explanation:
KHAn
Daily twos:
Independently simplify this expression and be ready to share your answer and
the strategy used: 10 1/2 - 3/4
Answer:
9 3/4
Step-by-step explanation:
Strategy: first cancel the fraction part of the mixed number, then subtract the remaining fraction from the integer obtained.
10 1/2 - 3/4 = 10 1/2 - 1/2 - 1/4
= 10 -1/4
= 9 3/4
__
Strategy: turn the subtracted fraction into a whole number by adding 1/4 to both parts of the problem, then subtract the whole number.
10 1/2 - 3/4 = (10 1/2 +1/4) -(3/4 +1/4)
= 10 3/4 -1
= 9 3/4
_____
We assume that you know that 1/2 + 1/4 = 3/4, or 3/4 -1/2 = 1/4. If you need to, you can get there by using the equivalent: 1/2 = 2/4.