When we are factoring a quadratic function, we are trying to reverse the following equation
[tex](x+a)(x+b)=x^2+(a+b)x+ab[/tex]Now, comparing the right-hand side of the above equation and the one given in the problem we see that
[tex]\begin{gathered} a+b=-2 \\ ab=-15 \end{gathered}[/tex]This means the question simplifies to "what are the two numbers that if I add them I get -2 and if I multiply them I get -15? "
Well, If we set a = -5 and b = 3, then
[tex]\begin{gathered} -5+3=-2 \\ -5\cdot3=-15 \end{gathered}[/tex]Hence, our expression factors to
[tex](x-5)(x+3)[/tex]Enrique has $50 in his lunch account and spends $5 per day from the account. Maya has $46 in her lunch account and spends $4 per day from the account. Which equations model the situation? Do not for get to show your work
a.) 50 – 5x = y and 46 – 4x = y
b.) 5x + 50 = y and 4x + 46 = y
c.) 5x – 50 = y and 4x – 46 = y
d.) 5 – 50x = y and 4 – 46x = y
Answer:
a
Step-by-step explanation:
Let's look at Enrique:
He starts with $50 and every time he buys lunch his account goes down by 5. The y would represent how much money he has left in his account.
So, say he buys 3 lunches how much is in his account if he started with 50?
50 - 5-5-5 = 35
Use the equation
50 - 5(3) = y
50 - 15 = y
35 = y
For which equation would x= 10 be a solution?
06 x+5=45
3 x-4 = 24
5+6 x = 55
5x-8=42
Answer:
5x-8=42
Step-by-step explanation:
5x-8=42
+8 +8
5x=50
50÷5
10
simplify the expression PLS HELP DUE SOON WILL MARK BRAINLEST UF UU ADD STEPS TOO !!!!
Answer:
[tex]125x^{18}y^{6}[/tex]
Step-by-step explanation:
Given expression:
[tex]\left(5x^6y^2\right)^3[/tex]
Apply the exponent rule that states that raising a number to a power of 1 yields the original number: 5 = 5¹.
[tex]\implies \left(5^1x^6y^2\right)^3[/tex]
[tex]\textsf{Apply exponent rule} \quad (abc)^n=a^n \cdot b^n \cdot c^n:[/tex]
[tex]\implies \implies \left(5^1\right)^3 \cdot \left(x^6\right)^3 \cdot \left(y^2\right)^3[/tex]
[tex]\textsf{Apply exponent rule} \quad (a^b)^c=a^{bc}:[/tex]
[tex]\implies 5^{(1 \cdot 3)} \cdot x^{(6 \cdot 3)} \cdot y^{(2 \cdot 3)}[/tex]
[tex]\implies 5^3x^{18}y^{6}[/tex]
Carry out 5³:
[tex]\implies 5 \cdot 5 \cdot 5 \cdot x^{18}y^{6}[/tex]
[tex]\implies 25 \cdot 5 \cdot x^{18}y^{6}[/tex]
[tex]\implies 125x^{18}y^{6}[/tex]
Draw a number line showing the whole numbers 16 through 19 and divisions between whole numbers in thirds.
Note: This is class 6 maths so please do it in class 6 way and not in the high school way. I need this answer as soon as possible.
I have attached the image.
Similar triangles ABE and BCD are shown on the coordinate plane. Line t passed through points A, B, and C,Select from the list to correctly complete the sentence.
Answer
The slope of segment AB is equal to the slope of the segment BC.
Explanation
Similar triangles have the same set of interior angles.
And it is one these angles, that determines the slope of the line segment AB or BC.
For the two triangles, that angle is the same because they are similar triangles.
So,
The slope of segment AB is equal to the slope of the segment BC.
Hope this Helps!!!
The points (3,9) and (2,6) fall on a particular line. What is its equation in slope-intercept form
Answer:
Equation of a line given two points:
Line equation: y = 3x
Slope = 3
Intercept = 0
Answer:
2 quinoa because it will comit 4 plus6
If someone were to answer all the questions that would be appreciated im confused with this!
Answer:
Choice A I think, i'm not really sure!
Find the Standard deviation of 2, 2.6, 3.2, 4.3 5, 4.7, 6.2
The most appropriate choice for standard deviation will be given by-
Standard deviation is 1.41
What is Variance and standard deviation?
At first, it is important to know about mean of a data.
Mean gives the average value of the data.
Variance is calculated by taking the sum of the square of deviation of each value of the data set and then dividing the sum by the total number of values of the data set.
On taking the square root of the variance, we will obtain the standard deviation of the data set.
Here,
The data set is 2, 2.6, 3.2, 4.35, 4.7, 6.2
Mean = [tex]\frac{2 + 2.6 + 3.2 + 4.35 + 4.7 + 6.2}{6}[/tex]
= 3.84
Variance = [tex]\frac{(2-3.84)^2+(2.6-3.84)^2+(3.2-3.84)^2+(4.35-3.84)^2+(4.7-3.84)^2+(6.2-3.84)^2}{6}[/tex]
= [tex]\frac{11.9021}{6}[/tex]
= [tex]1.983[/tex]
Standard deviation = [tex]\sqrt{1.983}[/tex]
= 1.41
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The straight line y = mx + c lies on the right side of y-axis if a. c = 0 b. c = -1 c. c>0 d. c<0
a + b - 8 = p solve for a
Answer:
a = −b + p + 8
Step-by-step explanation:
a + b - 8 = p solve for a
a + b - 8 = p
subtract b from both sides:
a + b - 8 - b = p - b
a - 8 = p - b
add 8 to both sides:
a - 8 + 8 = p - b + 8
a = p - b + 8
rearrange for alphabetical order:
a = −b + p + 8
Answer:
a = p + 8 - b
Step-by-step explanation:
Step 1: Add 8 both sides
[tex]\displaystyle{a+b-8+8=p+8}\\\\\displaystyle{a+b=p+8}[/tex]
Step 2: Subtract b both sides
[tex]\displaystyle{a+b-b=p+8-b}\\\\\displaystyle{a=p+8-b}[/tex]
Note: You can also subtract b both sides first then add 8 both sides.
Therefore, the new equation when a-term is the subject is [tex]a=8+p-b[/tex].
Please let me know if you have any questions!
Paul’s short-term goal is to exercise 3 hours per workout. His long-term
goal is to exercise 33 hours per month. What is the fewest number of
workouts will Paul need to do to meet his long-term goal?
A: 6
B: 11
C: 14
D: 18
Rotate the shape as described.
The ordered pair for A' is
. The ordered pair for B' is
. The ordered pair for C' is
By applying a rotation of 180° counterclockwise to triangle ABC, we have the following:
The ordered pair for A' is (4, 0).The ordered pair for B' is (7, 2).The ordered pair for C' is (9, 9).What is a rotation?A rotation can be defined as a type of transformation which moves every point of the object through a number of degrees around a given point, which can either be clockwise or counterclockwise (anticlockwise) direction.
In Geometry, rotating a point 180° about the origin in a clockwise or counterclockwise (anticlockwise) direction would produce a point that has the coordinates (-x, -y).
By applying a rotation of 180° counterclockwise (anticlockwise) to triangle ABC, the coordinate of the image of triangle A'B'C' is given by:
(x, y) → (-x, -y)
Points at A = (-4, 0) → Points at A' = (-(-4), -(0)) = (4, 0)
Points at B = (-7, -2) → Points at B' = (-(-7), -(-2)) = (7, 2).
Points at C = (-7, -2) → Points at C' = (-(-9), -(-9)) = (9, 9).
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the length of pregnancy isn't always the same. in pigs, the length of pregnancies varies according to a normal distribution with mean 114 days and standard deviation 5 days. what percent of pig pregnancies are longer than 109 days?
95.61 percent of pig pregnancies are longer than 109 days with 0.8413 probability.
A standard normal distribution or z-table can be used to approximate the probability of multiple ranges of values for a random normal variable X with a particular mean and standard deviation. This method entails changing X to a typical normal variable Z.
The normal, random variable X equals the length of pregnancy.
The mean and standard deviation are then calculated.
u, Mean = 114 days
σ, Standard deviation = 5 days
Then, as follows, transform X to its standard normal variable:
Z = (X - u) ÷ σ
Z = (X - 114) ÷ 5
To determine the likelihood of a pregnancy lasting more than 109 days,
P(X ≤ 109) = P(Z ≤ 114 - 109 ÷ 5)
P(X ≤ 109) = P(Z ≤ 1)
P(Z ≤ 1) = 0.8413 when using a typical normal distribution or z-table.
The percentage of pig pregnancies that last more than 109 days,
P = (109 ÷ 114) × 100
P = 95.61%
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7u + 17 - 12u = -38 solve for u and simplify your answer as much as possible
Answer:
u=11
Step-by-step explanation:
7u-12u+17=-38-combine like terms
-5u=-38-17
-5u=-55
-u=-11
which means u=11
Answer:
u = 11
Step-by-step explanation:
7u + 17 - 12u = - 38 , that is
- 5u + 17 = - 38 ( subtract 17 from both sides )
- 5u = - 55 ( divide both sides by - 5 )
u = 11
how do i do two step equations with variables and decimals
the graph represents the total number of plants and number of seed packets used. what i’d the constant of proportionality?
The constant of proportionality is 10 in the given graph which represents the total number of plants and number of seed packets used.
What is proportionality?Equivalence between two ratios is referred to as proportionality in algebra. A and B are in the same proportion as C and D in the expression a/b = c/d. When one of a proportion's four quantities is unknown, a proportion is typically used to solve a word problem.
It is resolved by multiplying one numerator by the opposing denominator and equating the result to that of the other numerator and denominator. Any relationship that always has the same ratio is referred to as proportional.
For instance, the ratio of proportionality is the average number of apples per tree, and the quantity of apples in a crop is proportional to the number of trees in the orchard.
Here, when number of seeds packet is 1 plants are 10 and when seeds packet are 5 plants are 50, we can divide each of the variables to find the constant,
10/1 = 10
20/2 = 10
30/3 = 10
Thus, constant is 10 represented as y = kx
where y = no. of plants = 30
k = 10
x = no. of seeds packet = 3
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I need help with this question asap 5x-4+4x=
Answer:9x-4
Step-by-step explanation:
Answer:
It simplifies to 9x-4
x= 4/9 or 0.4
Step-by-step explanation:
Which is a source of bias in a survey question?
a multiple-choice question that does not list commonly known options
a question that is so difficult most students will miss it
a question that asks a student to give an example of a concept in the lesson
a question that is so easy all students give the right answer
The source of bias in a survey question is D. a question that is so easy all students give the right answer.
What is a bias?Source bias is the propensity to favor sources of information that corroborate or contradict a certain set of views or values.
When systematic inaccuracy is added to sampling or testing during research, bias emerges. This happens when one outcome or response is preferred over others. Bias can appear at any stage of the research process, including study design, data collection, data analysis, and publication.
It should be noted that when the question is so easy, it ilustrates bias since it was intentional.
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Diana severs breakfast to two groups of children at a daycare center. One box of Oaties contains 12 cups of cereal. She needs ⅓ cup for each younger child and ¾ cup for each older child. Is one box of Oaties enough for everyone
One box of oaties will be enough for two groups of children.
We can state the box of oaties is enough for everyone, if the amount required by number of children in each group is less than or equal to 12.
So, amount of cereal required by younger/older children = amount required by one child × number of children
Amount of cereal required by younger children = 1/3 × 11
Amount of cereal required by younger children = 11/3 cups of cereal
Amount of cereal required by older children = 3/4 × 10
Amount of cereal required by younger children = 15/2 cups of cereal
Amount of cereal = 12 - (11/3 + 15/2)
Taking LCM in the bracket, we get 6
Amount of cereal = 12 - (11×2 + 15×3/6)
Solving the bracket
Amount of cereal = 12 - (22 + 45/6)
Performing addition = 12 - (67/6)
Amount of cereal = (12×6 - 67)/6
Amount of cereal = 72 - 67/6
Performing subtraction in numerator
Amount of cereal = 5/6
As 5/6 cups of cereal is remaining, thus, a box of oaties will be enough for 11 younger children and 10 older children.
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The complete question is -
Diane serves breakfast to two groups of children at a daycare center. One box of oaties contains 12 cups of cereal. She needs 1/3 cup for each younger child and 3/4 cup for each older child. Todays group includes 11 younger children and 10 older children. Is one box of oaties enough for everyone?
find the length and simplify in radical form
Answer:
Length = 9
Step-by-step explanation:
7^2 + 4sqrt2^2 = x^2
49 + 16*2 = x^2
49+32 = x^2
x^2=81
x=9
:] (Tell me if this is wrong)
given the f(X)=2x+3/x-1 and g(X)=3x+1
a.)evaluate
i.)fg(-1)
Evaluation of fog(-1) = 1/3
Given,
f(X)=2x+3/x-1
g(X)=3x+1
a) Evaluate:
(f o g)(x) = f(g(x))
= 2(g(x)) + 3/(g(x)) - 1
= 2(3x + 1) + 3/(3x + 1) - 1
= 6x+2+3/3x+1-1
(f o g)(x) = 6x+5/3x
i) fog(-1) = 6(-1)+5/3(-1)
= -6+5/-3
= -1/-3
fog(-1) = 1/3
Hence, a.)evaluate: (f o g)(x) = 6x+5/3x
i.)fg(-1): fog(-1) = 1/3
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whats greater 0.9 , 4/5 , 76% , 9/8
(IN THE LEAST TO GREATEST)
Answer:
76%,4/5,0.9,9/8
Step-by-step explanation:
Please help
It’s due tonight
Answer:
it -8 2÷-14=-7 x=-7
-7+-1=-8
answers asap plss asrgw4iflgj4pIEARHGPW45HIGOLIH3N54HGW!!!!!!?!?!?!?!?!?!?!
Answer:
gvs-qvzp-hst please join once I beg you
Answer:
Plan A is cheaper by 2 dollars when watching 6 movies
Step-by-step explanation:
plan a: y=x+18
plan b: y=3x+8
6+18=24
18+8=26
27
A student packs 18 tennis balls in 6 cans
containing an equal number of balls.
How many balls are there in each pack?
Answer:
There are 3 tennis balls in every can
Step-by-step explanation:
18/6 = 3
Bagels cost $0.65 each. Jim has 6 dollars. How many bagels can jim buy?
Answer:
He can buy 9 bagels
Step-by-step explanation:
6 divided by $0.65 gets you 9.230769230769231. We have to round this down so he can get 9 bagels.
Ten years ago, you could buy a loaf of bread for $1.21.
Twenty years ago, you could buy a loaf of bread for $0.92.
What is the difference in prices?
The ratio of Jaynee's money to Owen's money is 3:11. If Jaynee has $33,
how much money do Jaynee and Owen have ALL TOGETHER?
Answer:
42 dollars
Step-by-step explanation:
Jaynee's money is 11 out of (11+3) = 14 or 11/14ths of the total
11/14 x = 33
x = total amount = 33 * 14/11= 42 dollars
PLEASE HELP ME I'LL GIVE 30 POINTS
15. Determine the sum of the measures of the interior angles of this seven-sided polygon.
Show your calculation.
Answer:
900⁰
Step-by-step explanation:
Use the formula:
(n-2)×180 =sum of interior angles.
n= number of sides
(7-2) × 180= 5×180= 900⁰