Answer:
The sweater was 30% off
Step-by-step explanation:
To find this answer you need to simply dived 15 ÷ 50 to get the answer of 0.3 and 0.3 as a percent would be 30 making the sweater 30% off
find the minimum value of the function f(x)=x^2+5x-6
[tex] \begin{cases}h = - \frac{b}{2a} \\ k = \frac{4ac - {b}^{2} }{2a} \end{cases}[/tex]
The vertex of Parabola is the maximum/minimum point depending on the value of a.
Find Vertexh-value
[tex]h = - \frac{5}{2(1)} \\ h = - \frac{5}{2} [/tex]
k-value
[tex]k = \frac{4(1)( - 6) - {(5)}^{2} }{4(1)} \\ k = \frac{ - 24 - 25}{4} \\ k = \frac{ - 49}{4} \\ k = - \frac{49}{4} [/tex]
The minimum value is the value of k. Therefore the minimum value is - 49/4 at x = -5/2.
Method 2 (Derivative)This is Calculus method. We simply differentiate the function then substitute y' = 0.
Differentiate Function[tex]f'(x) = 2 {x}^{2 - 1} + {5x}^{1 - 1} - 0 \\ f'(x) = 2x + 5[/tex]
Substitute f'(x) = 0
[tex]0 = 2x + 5 \\ - 5 = 2x \\ - \frac{5}{2} = x[/tex]
Substitute x = -5/2 in the original equation.
[tex]f(x) = {( - \frac{5}{2} )}^{2} + 5( - \frac{5}{2} ) - 6 \\ f(x) = \frac{25}{4} - \frac{25}{2} - 6 \\ f(x) = \frac{25}{4} - \frac{50}{4} - \frac{24}{4} \\ f(x) = \frac{25}{4} - \frac{74}{4} \\ f(x) = - \frac{49}{4} [/tex]
Answer[tex] \sf{the \: \: minimum \: \: value \: \: is \: \: - \frac{49}{4} \: \: at \: \: x = - \frac{5}{2} }[/tex]
8y=-7x+56 find the rate of change for this linear function
Answer:
7/8
Step-by-step explanation:
rate of change = slope
8y = 7x+56
divide both sides by 8: y = 7/8x+7
rate of change = 7/8
Rectangle ABCD has a perimeter of 54 inches and a length that is twice the width. Which equation represents the perimeter of rectangle ABCD?
Answer:
54=2w
Step-by-step explanation:
I completed this problem
If Rectangle ABCD has a perimeter of 54 inches and a length that is twice the width. Then 6W =54 equation represents the perimeter of rectangle ABCD
What is Rectangle?A rectangle is a quadrilateral with four right angles.
Given,
Rectangle ABCD has a perimeter of 54 inches
Perimeter=54 inches
Length is twice the width
L=2W
L represents length and W represents width.
W=W
Perimeter of rectangle =2(Length+Width)
54=2(2W+W)
54=2(3W)
54=6W
Hence 54=6W is the equation represents the perimeter of rectangle ABCD
To learn more on Rectangle click:
https://brainly.com/question/15019502
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What is an equation of the line that passes through the points (0, -5)(0,−5) and (-6, 0)(−6,0)? Put your answer in fully reduced form
Answer:
y = -5/6x - 5
Step-by-step explanation:
Please let me know if you want me to add an explanation as to why this is the answer/how I got this answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)
If there are 36 apples in a bag and 12 are red write a ratio to represent this information
Answer: 3:1
Step-by-step explanation:
I start with putting it as 36:12 than reduce. Both sides are divisible by 12 so you end up with 3:1
I need help whoever helps gets extra points
Step-by-step explanation:
the length 27
the width 25
Which of the following can be used to construct a triangle?
(10 Points)
A) 10cm 13cm 24cm
B) 14cm 32m 28cm
C) 25cm 13cm 22cm
D) 5cm 8cm 20cm
Find x
Will give brainlist
Answer:
Lol find the x, its the x axis so its x as in horizontal. Now find the area and go from there, take the 2 times plus 3 and the 7 times plus 5 and find the x. Its simple.
Answer:
x=9.94
Step-by-step explanation:
8x+2+2x+3+7x+5=180
17x+11=180
17x=180-11
17x=169
x=9.94
Which of the following is not true about cluster sampling?
A.) Cluster sampling has the advantage of reducing sampling variability.
B.) Cluster sampling has the advantage of saving time and money.
C.) Cluster sampling uses clusters, which are miniature, nonoverlapping versions of the population.
D.) Cluster sampling uses randomly selected clusters and samples everyone within each cluster.
Answer:
The correct answer is D. It is not true that cluster sampling uses randomly selected clusters and samples everyone within each cluster.
Step-by-step explanation:
Cluster sampling is a method of collecting samples and statistical data, by means of which a certain group formed by people, things, events, etc., is taken as a sample, which are not considered individually but as part of a whole, which is in turn a proportional representation of the universality of samples available in the field.
Now, since this type of sampling allows to embrace large groups of sample units, data are not always obtained from all the components of the cluster, but from those necessary to be able to quantify the desired statistics.
Answer:
d
Step-by-step explanation:
just took it
86° 34° Х X = ____ degrees help quick pls
Answer:
60 degrees
Step-by-step explanation:
The angles all have to add up to 180, so you can do
[tex]34 + 86 +x = 180\\120 + x = 180\\x = 60[/tex]
Answer:
60° is your answer
I hope it's helps you
simplify 24÷⌈32÷(8−5)⌉−(−6)
Bob Ross spent $161.85 to purchase to different paint sets consisting of 15 tubes. It was a combination of oil and liquid medium. The oil tube cost $7.49 and the liquid medium $12.90. How many of each type did he purchase?
Answer:
A.
Step-by-step explanation:
N/A
saying that 4 < x < 9 is equivalent to saying what about x
Answer:
X is less than 9, but greater than 4.
Step-by-step explanation:
In which quadrant does the point (6,5) lie
Answer:
quadrant 1
Step-by-step explanation:
if a translation of T-3,-8 is applied to square ABCD, what are the coordinates of B'?
Answer:
B'(-2, -6)Step-by-step explanation:
Point B has coordinates: (1, 2)Translation rule is T(-3, -8)Applying the rule to point B:
B(1, 2) → B'(1 - 3, 2 - 8) = B'(-2, -6)what number 3 times equals 49
Answer:
16.3333 (and so on)
Step-by-step explanation:
This is easy to figure out by using the inverse operation of multiplication, which is division. We divide 49/3, which equals 16.3 (with the 3 repeating), so that is the answer!
Hope this helps and have a nice day (～*▽*)～
A book costs $45. Sales tax on the book is 7% which expression represents the final cost of the book in dollars
A: 45+0.07
B: 45•0.07
C: 45•0.93
D: 45• 1.07
How much of each ingredient is needed for 3 batches of
bread?
Answer:
3x times as much as it toke with one loaf of bread so 80
Step-by-step explanation:
Which of the following is the graph of y= -√ x + 1?
Answer:
check
Step-by-step explanation:
y intercept = (0,1)
x intercept = (1,0)
Answer:
Answer below hopes it helps
Step-by-step explanation:
Order the numbers from least to greatest. List the numbers as your final answer. 4, 7, -2, 25, 49, 63, 13, -22, 19, -13, 4/4, 34, -3 *
30 points cause i feel generous
Answer:
-22,-13,-3,-2,4/4,4,7,13,19,25,34,49,63
Write polynomial function from graph
Answer:
6i
Step-by-step explanation:
because I did this assignment
Answer:
12s67v6₹+tygzgxhfucxh
Look at these two triangles.
55
55°
25°
What additional information is sufficient to prove
ADWZ - AJUT
If [tex]U\hat{T}J = 100[/tex], all angles would be equal, resulting in similar triangles. So B is right
I GIVVVEE BRAINLISTE\
Answer:
3 on the edge
Step-by-step explanation:
The point guard for the Memphis Tigers scores an average of 16 points per game. Next
season, he wants to increase that average by 20%. What will the point guard's average points
per game be next year?
Answer:
19.2 points a game
Step-by-step explanation:
20% of 16 is 3.2. Knowing this it becomes a simple addition problem.
only answer if you know:( plz help quick
Answer:
11,23 mi
Step-by-step explanation:
fttxhfxhfxhfxhtdhthrhdhfdhtdththdtu
Karen and Bill collect coins. Karen has x coins. Bill has 2 coins fewer than five times the number of coins Karen has. Write and simplify an expression for the total number of coins Karen and Bill have.
Answer: 5x-2
Step-by-step explanation:
Step-by-step explanation:
the karen has 5x then .i hope this is answer
Someone please help and thank you
Answer:
8:3
Step-by-step explanation:
The GCF of each of them is 8. Divide both of them by it you'll get the ratio
in equivalence the answer is 8 3
Solve for p.
p+20≥25
Write the solution as an inequality (for example, p>9).
PLEASE ANSWER ASAP!!! Which graph is a histogram?
27. The average hourly wage of workers at a fast food restaurant is $7.25/hr
with a standard deviation of $0.50. Assume that the distribution is normally distributed. If a worker at this fast food restaurant is selected at random, what is the probability that the worker earns more than $8.00?*
Answer:
0.0668 = 6.68% probability that the worker earns more than $8.00
Step-by-step explanation:
When the distribution is normal, we use 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.
The average hourly wage of workers at a fast food restaurant is $7.25/hr with a standard deviation of $0.50.
This means that [tex]\mu = 7.25, \sigma = 0.5[/tex]
If a worker at this fast food restaurant is selected at random, what is the probability that the worker earns more than $8.00?
This is 1 subtracted by the pvalue of Z when X = 8. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{8 - 7.25}{0.5}[/tex]
[tex]Z = 1.5[/tex]
[tex]Z = 1.5[/tex] has a pvalue of 0.9332
1 - 0.9332 = 0.0668
0.0668 = 6.68% probability that the worker earns more than $8.00
