ASAP! GIVING BRAINLIEST! Please read the question THEN answer correctly! No guessing. Show your work or give an explaination.
Answers
Answer:
B. [tex]f(x)=-(x-4)^{2} -3[/tex]
Step-by-step explanation:
[tex]f(x)=x^{2}[/tex]
The transformations are:
Reflected upon the x axis (x is now negative):
[tex]f(x)=-x^{2}[/tex]
Moved 4 units to the right (instead of just the variable x, you have (x-4)):
[tex]f(x)=-(x-4)^{2}[/tex]
And finally moved 3 units down (so now it's minus 3):
[tex]f(x)=-(x-4)^{2} -3[/tex]
Hope this helps! :]
Related Questions
Please help me I’m really stuck
Answers
Answer: 3/20.
Step-by-step explanation: Yellow is mentioned three times in the table, so the numerator would be three and the denominator would be 20 since Danielle recorded 20 draws in the table.
The accompanying data on x = current density (mA/cm2) and y = rate of deposition (m/min)μ appeared in a recent study.
x 20 40 60 80
y 0.24 1.20 1.71 2.22
a. Do you agree with the claim by the article’s author that "a linear relationship was obtained from the tin-lead rate of deposition as a function of current density"? (Hint: determine the coefficient of correlation and determination factors)
b. Determine the linear regression equation.
Answers
Answer:
a) [tex]r=\frac{4(333)-(200)(5.37)}{\sqrt{[4(12000) -(200)^2][4(9.3501) -(5.37)^2]}}=0.9857[/tex]
The correlation coefficient for this case is very near to 1 so then we can ensure that we have linear correlation between the two variables
b) [tex]m=\frac{64.5}{2000}=0.03225[/tex]
Now we can find the means for x and y like this:
[tex]\bar x= \frac{\sum x_i}{n}=\frac{200}{4}=50[/tex]
[tex]\bar y= \frac{\sum y_i}{n}=\frac{5.37}{4}=1.3425[/tex]
[tex]b=\bar y -m \bar x=1.3425-(0.03225*50)=-0.27[/tex]
So the line would be given by:
[tex]y=0.3225 x -0.27[/tex]
Step-by-step explanation:
Part a
The correlation coeffcient is given by this formula:
[tex]r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}[/tex]
For our case we have this:
n=4 [tex] \sum x = 200, \sum y = 5.37, \sum xy = 333, \sum x^2 =12000, \sum y^2 =9.3501[/tex]
[tex]r=\frac{4(333)-(200)(5.37)}{\sqrt{[4(12000) -(200)^2][4(9.3501) -(5.37)^2]}}=0.9857[/tex]
The correlation coefficient for this case is very near to 1 so then we can ensure that we have linear correlation between the two variables
Part b
[tex]m=\frac{S_{xy}}{S_{xx}}[/tex]
Where:
[tex]S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}[/tex]
[tex]S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}[/tex]
With these we can find the sums:
[tex]S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}=12000-\frac{200^2}{4}=2000[/tex]
[tex]S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i){n}}=333-\frac{200*5.37}{4}=64.5[/tex]
And the slope would be:
[tex]m=\frac{64.5}{2000}=0.03225[/tex]
Now we can find the means for x and y like this:
[tex]\bar x= \frac{\sum x_i}{n}=\frac{200}{4}=50[/tex]
[tex]\bar y= \frac{\sum y_i}{n}=\frac{5.37}{4}=1.3425[/tex]
And we can find the intercept using this:
[tex]b=\bar y -m \bar x=1.3425-(0.03225*50)=-0.27[/tex]
So the line would be given by:
[tex]y=0.3225 x -0.27[/tex]
For the following problem state the objective function and the constraints. DO NOT solve:
A local group is planning to raise as much money as they can by making and selling umbrellas. They intend to make two models: the Sprinkle and the Hurricane.
The amount of cloth, metal, and wood used in making each model, the amount of each material available on a given day and the profit for each model are:
Sprinkle Hurricane Total Available
Cloth (sq yd) 1 2 500
Metal (lbs) 2 3 600
Wood (lbs) 4 7 800
Profit ($) 3 5
Answers
Answer:
If we define S as the number Sprinkle's umbrellas, and H as the Hurricane's umbrellas, the profit P can be expressed as:
[tex]P=3S+5H[/tex]
The restriction for cloth can be written as:
[tex]S+2H\leq500[/tex]
The restriction for metal can be written as:
[tex]2S+3H\leq600[/tex]
The restriction for wood can be written as:
[tex]4S+7H\leq800[/tex]
The condition for S and H to be positive is:
[tex]S, H \geq0[/tex]
Step-by-step explanation:
We have an objective function that, in this case, we want ot maximize.
This function is the Profit (P).
If we define S as the number Sprinkle's umbrellas, and H as the Hurricane's umbrellas, the profit can be expressed as:
[tex]P=3S+5H[/tex]
We have 3 restrictions, plus the condition that both S and H are positive.
The restriction for cloth can be written as:
[tex]S+2H\leq500[/tex]
The restriction for metal can be written as:
[tex]2S+3H\leq600[/tex]
The restriction for wood can be written as:
[tex]4S+7H\leq800[/tex]
The condition for S and H to be positive is:
[tex]S, H \geq0[/tex]
If the given ratio of two similar solids is 5:3, what is the similarity ratio of the corresponding surface areas?
Answers
Answer:
surface area ratio = 25/9
Step-by-step explanation:
When two solid figures or shapes are similar the ratio of their corresponding length are equal. This simply means when two solids are similar the ratio of their corresponding sides are proportional. For a similar solid the ratio of their surface area is the side ratio squared.
This simply means the ratio of their corresponding sides is squared for the surface area ratio.
In the case of the given ratio of the two similar solids given as 5 : 3, the similarity ratio of the corresponding surface area can be computed below.
a/b = (a/b)² Therefore,
5/3 = (5/3)²
surface area ratio = 25/9
there are 300 staff members this year. this is 25% lower than last years number of staff members. what was last years number of staff members?
Answers
Answer:
400
Step-by-step explanation:
75/100 = 300/x
75x = 30000
x = 400
Get 14 points, Plz help me with this question, and give the right answer cause it's important
Answers
Answer:
D
Step-by-step explanation:
An electric cord was cut into three pieces in the ratio 5:3:7. The difference in the length between the longest piece and the shortest piece is 64 cm.
1.Find the length of the longest piece?
2. Find the length of the Electrical cord in meters before it was cut?
Answers
Step-by-step explanation:
Let's call the pieces 5x, 3x, and 7x respectively. The longest (7x) and shortest (3x) pieces had a difference of 64 cm. Therefore, 7x - 3x = 64 → 4x = 64 → x = 16 cm. We know that the longest piece is 7x, so its length is 7 * 16 = 112 cm. As for the total length of the cord, we can express it as 5x + 3x + 7x = 15x, which is 15 * 16 = 240 cm. Hope this helps!
1) 112 m
Answer:
2) 240 m
Step-by-step explanation:
Let the length of pieces be 5x, 3x and 7x m.
Where 3x is the shortest piece and 7x is the longest piece.
According to the given condition:
7x - 3x = 64
4x = 64
x = 64/4
x = 16 m
1) Length of longest piece = 7x = 7* 16 = 112 m
2) length of the Electrical cord in meters before it was cut = 5x + 3x + 7x = 15x = 15*16 =240 m
Write an equivalent fraction for 2/8. (Remember to find an equivalent fraction you need to either multiply or divide you numerator and denominator by the same number)
Answers
Answer:
1/4, 3/12, 4/16, 5/20, etc.
Step-by-step explanation:
Multiply/Divide the numerator and denominator by the same number (Ex. 1/4)
Divide by 2
2/8
2/2 = 1
8/2 = 4
1/4
The angle \theta_1θ 1 theta, start subscript, 1, end subscript is located in Quadrant \text{I}Istart text, I, end text, and \cos(\theta_1)=\dfrac{3}{8}cos(θ 1 )= 8 3 cosine, left parenthesis, theta, start subscript, 1, end subscript, right parenthesis, equals, start fraction, 3, divided by, 8, end fraction . What is the value of \sin(\theta_1)sin(θ 1 )sine, left parenthesis, theta, start subscript, 1, end subscript, right parenthesis?
Answers
Answer:
(√55)/8
Step-by-step explanation:
The sine and cosine are related by ...
sin² +cos² = 1
Then the sine of the angle is ...
sin(θ₁) = √(1 -cos(θ₁)²)
sin(θ₁) = √(1 - (3/8)²) = √(55/64)
sin(θ₁) = (√55)/8
A programmer plans to develop a new software system. In planning for the operating system that he will​ use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 99​% confident that his estimate is in error by no more than two percentage points question mark s?​a) Assume that nothing is known about the percentage of computers with new operating systems. n=_______.(Round up to the nearest​ integer.)b) Assume that a recent survey suggests that about 96​% of computers use a new operating system. n=_______.(Round up to the nearest​ integer.)
Answers
Answer:
a) [tex]n=\frac{0.5(1-0.5)}{(\frac{0.02}{2.58})^2}=4160.25[/tex]
And rounded up we have that n=4161
b) [tex]n=\frac{0.96(1-0.96)}{(\frac{0.02}{2.58})^2}=639.01[/tex]
And rounded up we have that n=640
Step-by-step explanation:
Part a
The confidence level is 99% , our significance level would be given by [tex]\alpha=1-0.99=0.01[/tex] and [tex]\alpha/2 =0.005[/tex]. And the critical value would be given by:
[tex]z_{\alpha/2}=-2.58, z_{1-\alpha/2}=2.58[/tex]
The margin of error for the proportion interval is given by this formula:
[tex] ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}[/tex] (a)
And on this case we have that [tex]ME =\pm 0.02[/tex] and we are interested in order to find the value of n, if we solve n from equation (a) we got:
[tex]n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}[/tex] (b)
Since we don't have prior info for the true proportion we can use [tex]\hat p=0.5[/tex]. And replacing into equation (b) the values from part a we got:
[tex]n=\frac{0.5(1-0.5)}{(\frac{0.02}{2.58})^2}=4160.25[/tex]
And rounded up we have that n=4161
Part b
For this case we have a prior estimation ofr the proportion:
[tex] \hat p=0.96[/tex]
And replacing we got:
[tex]n=\frac{0.96(1-0.96)}{(\frac{0.02}{2.58})^2}=639.01[/tex]
And rounded up we have that n=640
Assume an exponential function has a starting value of 16 and a decay rate of 0.52%. Write an equation to model the situation.
Answers
Answer:
[tex]A(t)=16(0.99948)^t[/tex]
Step-by-step explanation:
The exponential function is modeled using the equation:
[tex]A(t)=A_o(1\pm r)^t[/tex]
Where the plus sign indicates growth and the negative sign indicates exponential decay.
r=Decay/Growth constantt=time[tex]A_0[/tex] is the starting value.For an exponential function has a starting value of 16 and a decay rate of 0.52%.
[tex]A_0=16\\r=0.052\%=0.00052[/tex]
This gives:
[tex]A(t)=16(1- 0.00052)^t\\A(t)=16(0.99948)^t[/tex]
The function that models this situation is:
[tex]A(t)=16(0.99948)^t[/tex]
Complete the following, and you'll be made brainliest if it is correct!
a) 3/5 = ?/20?
find out what should go where the question mark is for both questions.
b) ?/6 = 25/30
Answers
Answer:
a) 12
b)5
Step-by-step explanation:
Answer:
(a) 12
(b) 5
Step-by-step explanation:
(a) 3/5 = (3×4)/(5×4) = 12/20
(b) (5×5)/(5×6) = 25/30
Which of the following companies offers the greatest total employment compensation
Answers
Solve by factoring: X^2-3x-18=0
Answers
Answer:
[tex]x=-3\\x=6[/tex]
Step-by-step explanation:
We begin with [tex]x^2-3x-18=0[/tex]
To factor this, we need to look for two things:
Two numbers that add together to get [tex]-3[/tex] and two numbers that multiply together to get [tex]-18[/tex].
One method to find the answer is to write out each of the solutions to the multiplication and then check the sum of each of those digits:
The numbers that multiply together to get [tex]-18[/tex] are:
1 and -18
-1 and 18
2 and -9
-2 and 9
3 and -6
-3 and 6
Now, we can add each of these pairs of digits together to find which one gives us an answer of [tex]-3[/tex]
[tex]1+(-18)=-17\\\\-1+18=17\\\\2+(-9)=-7\\\\-2+9=7\\\\3+(-6)=-3\\\\-3+6=3[/tex]
From this, we can see that 3 and -6 gave us the result of -3. This means that these are the two factors.
To get our answer from this, we need to put our answer in the form of [tex](x+a)(x+b)=0[/tex]
This gives us the factored form of [tex](x+3)(x-6)=0[/tex]
To solve this equation, we must make either parenthesis equal to zero. This means that our solutions will be
[tex]x=-3\\x=6[/tex]
By factoring, the solutions to the quadratic equation x² - 3x - 18 = 0 are x = 6 and x = -3.
How to Solve an Equation by Factorization?To solve the quadratic equation x² - 3x - 18 = 0 by factoring, we need to find two binomials that, when multiplied, result in zero. The quadratic equation generally follows the format ax² + bx + c = 0, where a, b, and c are constants.
Here's the step-by-step process for factoring the given equation:
Step 1: Begin with the equation x² - 3x - 18 = 0.
Step 2: Identify two numbers whose product is -18 (the constant term) and whose sum is -3 (the coefficient of the x-term).
We find that the two numbers are -6 and +3 because:
-6 * 3 = -18 (the product of the two numbers is -18)
-6 + 3 = -3 (the sum of the two numbers is -3)
Step 3: Rewrite the middle term (-3x) using -6x and +3x:
x² - 6x + 3x - 18 = 0.
Step 4: Group the terms and factor them by pairs:
(x² - 6x) + (3x - 18) = 0.
Step 5: Factor out the greatest common factor from each group:
x(x - 6) + 3(x - 6) = 0.
Step 6: Notice that both terms have a common factor of (x - 6). Factor it out:
(x - 6)(x + 3) = 0.
Step 7: Apply the zero-product property, which states that if the product of two factors is equal to zero, then at least one of the factors must be zero:
Setting each factor to zero and solving for x:
x - 6 = 0 --> x = 6
x + 3 = 0 --> x = -3
Learn more about Factorization on:
https://brainly.com/question/25829061
#SPJ6
How do you solve 8^2
Answers
To solve 8^2 , we have to multiply 8 with itself , this means = 8 × 8 = 64 . Thus, our answer = 8²= 64.
This also known as square of a number as we multiply it with itself .
*Will give brainliest* A ladder, leaning against a wall, makes an angle of 20° with the ground. The foot of the ladder is 3 m from the wall. How long is the ladder?
Answers
Answer:
The answer is 3.64m
This is because if you draw a diagram, and label all the sides of the triangle (opp, hyp, adj), the adjacent angle is 3m. You can now use the sine rule to find the hypotenuse (length of ladder) by doing: cos 30= 3/h. You divide cos 30 by 3 and you get the answer of 3.64m rounding to 2 decimal places.
Explanation: I drew a diagram and dived all the measurements in meters by 10 to get cm which showed that the ladder (in the diagrams scale) was 32cm long but as i had divided i needed to time it by ten to get the answer. after multiplying 32cm by 10 i got 3.2 meters.
Hope this helps!
Find the approximate circumference of a circle with a diameter of 100
Answers
Answer: 314
Step-by-step explanation: Just google it
A sphere has a surface area of 160 square centimeters.which choice is the closest to its diameter use 3.14 to approximate pi.
Answers
Answer:
Step-by-step explanation:
Hope this helps!
Why the US civil rights movement gain new momentum after World War ?
Answers
Answer:
The US civil rights movement gain new momentum after World War II as the rallying of blacks in Montgomery and Alabama by Rosa Parks. At the time black people were separated from white people. Whites were considered as a superior and high class while on the other side blacks were counted as a lower class.
What’s the correct answer for this?
Answers
Answer:
A.
Step-by-step explanation:
In the attached file
Solve for r.
27r = 783
Answers
Answer:29
Step-by-step explanation:
27r=783
divide both sides by 27
27r÷27=783÷27
r=29
Answer:
[tex]r = 29[/tex]
Step-by-step explanation:
[tex]27r = 783 \\ \frac{27r}{27} = \frac{783}{27} \\ r = 29[/tex]
hope this helps
brainliest appreciated
good luck! have a nice day!
what is 4n + 3(n-5) + 2
Answers
Answer: 7n−13
Step-by-step explanation:
What is the surface area of this composite solid?
242
319
363
517
Answers
Answer: 242
Step-by-step explanation:
Answer:
It is 363
Step-by-step explanation:
help need to bring my grade up!!
Why do you find the volume of a rectangular or triangular prism.
Answers
Answer: Multiply the length, the width, and the height.
You can multiply them in any order to get the same different result. The formula for finding the volume of a rectangular prism is the following: Volume = Length * Height * Width, or V = L * H * W
Step-by-step explanation:
What number line represents the solution for the inequality -1\2x>4
Answers
Answer:
Step-by-step explanation:
-1\2x>4
-x> 8
x < -8
The one without a shaded knob starting from -8 on the x-axis; projecting leftward.
1- An office supply company is shipping a case of wooden pencils to a store. There are 64 boxes of pencils in the case. If each box of pencils weighs 2.5 ounces (oz), what is the weight in pounds, in the case of wooden pencils?
Answers
Answer:
Total weight in lb = 10 lb
The weight of wooden pencils is 10 pounds.
Step-by-step explanation:
We are given that an office supply company is shipping a case of wooden pencils to a store.
There are 64 boxes of pencils in the case.
The weight each box of pencils is 2.5 ounces (oz)
We are asked to find the weight of wooden pencils in pounds.
Step 1: Find the total weight of pencils in ounces
Since there are 64 pencils and each pencil weighs 2.5 ounces,
Total weight in oz = 64×2.5
Total weight in oz = 160 oz
Step 2: Convert the total weight of pencils into pounds
We know that 1 pound has 16 ounces so we have to divide the total weight of the pencils by 16 to get the weight in pounds
Total weight in lb = 160/16
Total weight in lb = 10 lb
Therefore, the weight of wooden pencils is 10 pounds.
What are the coefficients in the expression
8a + b + 9?
Answers
Answer:
8 and 1
Step-by-step explanation:
Any equation which can be expressed in terms of a,b, c and so on is algebraic expression.
The term a, b , c ...are variables. They are called so be cause their value can change based on change in condition.
Coefficient are the number with which a variable is multiplied with.
Example
10a+ 20b+c+7d+ 10 is algebraic expression.
The terms which is free of any variable is called constant as its value remains fixed.
In above expression 10 is constant term.
Here term a, b,d are multiplied with 10, 20, and 7 respectively. Thus, these terms are coefficient .
If any term does not explicit coefficient then its coefficient is taken as 1.
This can be explained,
as in above example c does not have any explicit coefficient attached with it
"c" can be also expressed as 1*c as multiplication with does alter the value of variable.
__________________________________
Now in the prblem given
expression: 8a + b + 9
Variable are a , b
constant term is 9
8 is multiplied with variable a. so, 8 is coefficient of a.
b does not have any coefficient thus b coefficient can be taken as 1
as 1*b is equal to b.
Thus, coefficient in expression 8a + b + 9 is 8 and 1.
The coefficients in the expression i.e. 8a + b + 9 should be 8 and 1.
Coefficients in the expression:A coefficient should be integer i..e written along with a variable or it should be multiplied by the variable. In other terms, a coefficient should be considered as the numerical factor of a term that comprise of constant and variables.
So based on this, we can conclude that The coefficients in the expression i.e. 8a + b + 9 should be 8 and 1.
Learn more about an expression here: https://brainly.com/question/24595897
Y to the 15 over y to the x is equal to y to the 7th. Find the missing exponent.
Answers
Answer:
8
Step-by-step explanation:
to divide exponentials, subtract the exponents
15-x=7
x=8
A water faucet is turned 1/7 to the right and then 3/4 to the right again. How far is the water faucet turned?
Answers
Answer:
A water faucet is turned 1/7 to the right and then 3/4 to the right again.
=> In total, that water faucet turned 1/7 + 3/4 = 4/28 + 21/28 = 25/28 to the right.
Hope this helps!
:)
a set of average city temperatures in december are normally distributed with a mean of 16.3°C and a standard deviation of 2°C. what proportion of temperatures are between 12.9°C and 14.9°C?
Answers
Answer:
19.74% of temperatures are between 12.9°C and 14.9°C
Step-by-step explanation:
Problems of normally distributed samples are solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this question, we have that:
[tex]\mu = 16.3, \sigma = 2[/tex]
What proportion of temperatures are between 12.9°C and 14.9°C?
This is the pvalue of Z when X = 14.9 subtracted by the pvalue of Z when X = 12.9.
X = 14.9
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{14.9 - 16.3}{2}[/tex]
[tex]Z = -0.7[/tex]
[tex]Z = -0.7[/tex] has a pvalue of 0.2420
X = 12.9
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{12.9 - 16.3}{2}[/tex]
[tex]Z = -1.7[/tex]
[tex]Z = -1.7[/tex] has a pvalue of 0.0446
0.2420 - 0.0446 = 0.1974
19.74% of temperatures are between 12.9°C and 14.9°C