Answer:
Step-by-step explanation:
so there are square root properties that they want you to recognize and respect :P everyone wants a little respect, even the square root sign :D
first we can move things under one root sign, like this...
[tex]\sqrt{10}[/tex] * [tex]\sqrt{6}[/tex] = [tex]\sqrt{10 * 6}[/tex]
now we can do that multiplication under the square root sign.
[tex]\sqrt{10 * 6}[/tex] = [tex]\sqrt{60}[/tex]
now we can think about this for a long long time and see that 60 can be split up in other ways besides 10 * 6
for instance 15 * 4 also is 60
so this is equal [tex]\sqrt{15 * 4}[/tex] = [tex]\sqrt{10 * 6}[/tex] = [tex]\sqrt{60}[/tex]
now just take out the perfect square part
2 * [tex]\sqrt{15}[/tex]
this isn't one of the listed answers but it is a correct answer , for what is being asked. The teacher got the question wrong :o
What is the equation of a line that is perpendicular to y=0.25x−7 and passes through the point (-6,8)
keeping in mind that perpendicular lines have negative reciprocal slopes, let's check for the slope of the equation above
[tex]0.\underline{25}\implies \cfrac{25}{1\underline{00}}\implies \cfrac{1}{4} \\\\[-0.35em] ~\dotfill\\\\ y=0.25x-7\implies y=\stackrel{\stackrel{m}{\downarrow }}{\cfrac{1}{4}}x-7\qquad \impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array} \\\\[-0.35em] ~\dotfill[/tex]
[tex]\stackrel{~\hspace{5em}\textit{perpendicular lines have \underline{negative reciprocal} slopes}~\hspace{5em}} {\stackrel{slope}{\cfrac{1}{4}} ~\hfill \stackrel{reciprocal}{\cfrac{4}{1}} ~\hfill \stackrel{negative~reciprocal}{-\cfrac{4}{1}\implies -4}}[/tex]
so we're really looking for the equation of a line whose slope is -4 and it passes through (-6 , 8)
[tex](\stackrel{x_1}{-6}~,~\stackrel{y_1}{8})\hspace{10em} \stackrel{slope}{m} ~=~ - 4 \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{8}=\stackrel{m}{- 4}(x-\stackrel{x_1}{(-6)}) \implies y -8= -4 (x +6) \\\\\\ y-8=-4x-24\implies {\Large \begin{array}{llll} y=-4x-16 \end{array}}[/tex]
Evaluate 5 + x − 6 ∙ 8 for x = 8.
33) A recipe for pancakes calls for 9 cups of
milk. Nicole has already put in 3 cups.
How many more cups does she need to put
in?
Willis Rusch recently purchased a 5-lb box of treats for his dog. The total purchase price was $8.87. What was the price per pound?
Answer:
Willis paid 1.774 dollars a pound
Step-by-step explanation:
Assuming there was no tax in the purchase, you can divide 8.87/5 to get your price per pound.
Triangle ABC is shown with exterior ∠z.
triangle ABC with angle A labeled 77 degrees, angle B labeled 57 degrees, and side AC extended with angle z labeled as exterior angle to angle C
Determine m∠z.
46°
77°
123°
134°
Answer:
[tex]134^{\circ}[/tex]
Step-by-step explanation:
Using the exterior angle theorem,
[tex]m\angle z=m\angle A+m\angle B=134^{\circ}[/tex]
Using the exterior angle theorem, angle z is measured as 134°.which is the correct answer that would be an option (D).
What is the Exterior Angle Theorem?The exterior angle theorem is a triangle theorem that asserts that the measure of the external angle created by an extended side of a triangle is equal to the sum of the measures of the triangle's remote interior angles.
The given data will be the following as:
Exterior angle to angle C of triangle ABC = z
The remote interior angle of triangle ABC are angled A = 58° and angle B = 44°.
Therefore:
The measure of angle z = measure of angle A + measure of angle B [according to the exterior angle theorem]
Substitute the values and we get
Measure of ∠z = 77 + 57
Measure of ∠z = 134°
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c. Sandra sleeps for one-third of the day.
How many hours is that?
d. Sandra visits her family and friends for one-eighth of the day.
How many hours is that?
Answer:
8 hours
3 hours
Step-by-step explanation:
24/3=8
24/8=3
A park is planning a rectangle shaped koi pond with an area given by the expression 4d2 + 8d square feet. Draw one possible design for the koi pond and label the dimensions for length and width
The general rule for the dimensions will be 4d and (d + 2) after taking d = 1, the dimensions are 4 and 3 feet
What is the area of the rectangle?It is defined as the area occupied by the rectangle in two-dimensional planner geometry.
The area of a rectangle can be calculated using the following formula:
Rectangle area = length x width
It is defined as two-dimensional geometry in which the angle between the adjacent sides is 90 degrees. It is a type of quadrilateral.
It is given that:
A park is planning a rectangle-shaped koi pond with an area given by the expression 4d² + 8d square feet.
= 4d(d + 2)
The dimensions could be 4d and (d + 2)
Let d = 1
The dimensions are 4 and 3 feet
Thus, the general rule for the dimensions will be 4d and (d + 2) after taking d = 1, the dimensions are 4 and 3 feet
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Race times for a recent 5k
run are normally distributed with a mean
time of 38 minutes and standard devia-
tion of 3.5 minutes.
(a) What is the median race time for this
event?
The median race time for this event is 38 minutes.
Given:
Race times for a recent 5k run are normally distributed with a mean time of 38 minutes and standard deviation of 3.5 minutes.
a.
X is normally distributed in (38,3.5).
so here the mean and the median are equal to each other.
Mean = 38
Median = mean
Median = 38 minutes.
Therefore the median race time for this event is 38 minutes.
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A hospital would like to determine the mean length of stay for its patients having abdominal surgery. A sample of 17 patients revealed a sample mean of 6.6 days and a sample standard deviation of 1.5 days. Assume that the lengths of stay are approximately normally distributed. Find a 99% confidence interval for the mean length of stay for patients with abdominal surgery. Round the endpoints to two decimal places, if necessary.
The 99% confidence interval for the mean length of stay for patients with abdominal surgery is 5.54, 7.66
How to solve for confidence intervalWe have the following data to solve the question with
sample size = 17
standard deviation s = 1.5
Confidence interval = 99%
mean = 6.6 days
α = 1 - 0.99
= 0.01
df = degree of freedom = n -1
17 - 1 = 16
tα/2 = 0.01 / 2
= t 0.005, 16
t critical value = 2.9208
99 % confidence interval =
X ± t critical * s/√n
[tex]6.6 +-2.9208 * \frac{1.5}{\sqrt{17} }[/tex]
6.6 ± 1.0626
6.6 - 1.0626, 6.6 + 1.0626
= 5.54, 7.66
The 99% confidence interval for the mean length of stay for patients with abdominal surgery is 5.54, 7.66
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Prime factorization of 216. Will give 10 points and 5 star if correct answer
Answer: The prime factorization of 216 is 2 × 2 × 2 × 3 × 3 × 3 or 23 × 33.
Step-by-step explanation:
PLEASE MARK BRAINLIEST
graph the linear inequality y≤-2/5x-4
The graph of the inequality, y ≤ -2/5x - 4, is shown below
Graph of Linear inequalitiesFrom the question, we are to graph the given linear inequalities.
The given linear inequalities is y ≤ -2/5x - 4.
To graph the linear inequality,
First, we will draw the line of the equation y = -2/5x - 4
To draw the line, we will use the x-intercept and y-intercept.
y-intercept
When x = 0
y = -2/5x - 4
y = -2/5(0) - 4
y = 0 - 4
y = -4
Thus, the coordinate of the y-intercept is (0, -4)
x-intercept
When y = 0
y = -2/5x - 4
0 = -2/5x - 4
4 = -2/5x
4 × 5 = -2x
20 = -2x
x = 20/-2
x = -10
Thus, the coordinate of the x-intercept is (-10, 0)
Now, using the coordinates of the x and y-intercepts, the line of the graph is shown.
Since the sign of the inequality is less than or equal to (≤), the line is a solid line and the solution is below the line.
The graph of the inequality is shown below.
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A manager at SUBWAY wants to find the total cost of 24.8 pounds of sliced turkey at $1.89 a pound and 38.2 pounds of provolone cheese at $2.05 a pound. Find the final
cost. [1.4 and 1.5]
The final cost of the sliced turkey and provolone cheese is $31.84
How to calculate the final cost of both products?The first step is to calculate the cost of the sliced turkey
The pounds of turkey is 24.8
The amount of the turkey is $1.89
The cost is = 24.8/1.89
= 13.21
The next step is to calculate the cost of the provolone cheese
The pounds of the provolone cheese 38.2
The amount of provolone cheese is $2.05
The cost is = 38.2/2.05
= 18.63
Therefore the final cost can be calculated as follows
= 13.21 + 18.63
= 31.84
Hence the final cost is $31.84
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please help me with this practice question
Answer:
10u^2 - 2u - 2
Step-by-step explanation:
Combine like terms:
4u^2 + 3 + 6u^2 - 2u - 5
10u^2 - 2u - 2
A group of friends wants to go to the amusement park. They have $284.25 to spend on parking and admission. Parking is $9.25, and tickets cost $27.50 per person, including tax. How many people can go to the amusement park?
If they have $284.25 to spend on parking and admission. Parking is $9.25, and tickets cost $27.50 per person, including tax. The number of people that can go to the amusement park is: 10 people.
How to find the number of people?Let a represent the number of people who can go to the amusement park
Formula an equation
9.25 + 27.50a = 284.25
Combine like terms
27.50a = 284.25 - 9.25
27.50a = 275
Divide both side by 27.50a
a= 275/ 27.50
a = 10 people
Therefore 10 people can go to the amusement park.
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Use your calculator to find the angle, to the nearest hundredth of a degree, whose cosine value is 1/7
The angle with cosine value of 1/7 is 81.79°
How to determine the angle?Trigonometry is the branch of mathematics that deals with the relationship between ratios of the sides of a right-angled triangle with its angles
Given that: the cosine value of the angle is 1/7
Let the angle be θ. Then we can write that:
cos θ = 1/7
θ = cos⁻¹ (1/7) (Take the inverse of cosine on both sides)
θ = 81.79°
Note: To get cos⁻¹ on your calculator, press the shift button followed by the cos button
Therefore, the angle is 81.79°
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An inequality _________ always opens to the ______________ number.
Answer:
symbol
greater
Step-by-step explanation:
An inequality symbol always opens to the larger,greater,bigger number.
Examples:
5 > 1
2 > -1
-4 < 0
2 < 3
Answer: An inequality Sign always opens to the smaller number.
Step-by-step explanation:
Identify the rate of change in each equation.
Answer:
7.
[tex] \frac{1}{4} [/tex]
8.
[tex]2[/tex]
9.
[tex] - \frac {5}{4} [/tex]
10.
[tex]3[/tex]
Step-by-step explanation:
rate of change is slop
What is the measure of angle ABC
Answer:
D
Step-by-step explanation:
[tex]m\angle EBD=33^{\circ} \implies m\angle EBC=33^{\circ} \\ \\ \therefore m\angle DBC=m\angle EBD+m\angle EBC=66^{\circ} \\ \\ m\angle DBC=66^{\circ} \implies m\angle ABD=66^{\circ} \\ \\ \therefore m\angle ABC=m\angle ABD+m\angle DBC=132^{\circ}[/tex]
Hey can someone please help me out on this question and explain?It’s below. Thanks so much I appreciate it:) I’ll give brainly
Answer:
153.86
Step-by-step explanation:
to get the area of the circle you take the radius to the power of 2 and then multiply with π
when the radius of circle S is half the radius of circle L and circle L has radius 14 inch, then the radius of S is 7.
area = radius² * π = 7² * π = 49 * π
π is approximately 3.14
so 49*3.14 = 153.86
The function f(x) is graphed below. What is true about the graph on the interval from point a to point b?
Answer:
Option 1. It is positive and increasing.
Step-by-step explanation:
Alton estimated that 240 people attended the band concert. The actual count for attendance was 200 people. Find the percent of error.
8%
17%
20%
40%
it's not 17% so
a tank is filled with petrol at 35 litres per minute. the tank already had 10 liters in it before the filling began. write an equation in standard form for this situation.
The equation for a tank that is filled with petrol at 10 liters already and filling at 35 liters per minute is y = 35x + 10
How to write expression for a filling a tankThe equation required here is a linear equation
The graph of linear equation is a straight line graph and the relationship is expressed in the form.
y = mx + c
variables are defined as below
y = total petrol in liters
m = filling in liters per minute = 35
x = number of liters
c = quantity before the filling began = 10
The expression is
y = 35x + 10
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Se divide una suma de Gs. 1.365.000 en tres capitales. Colocados respectivamente al 2%, 3% y 4%, producen el mismo interés simple anual. Calcula dichos capitales
Los capitales depositados en las cuentas de 2 %, 3 % y 4 % son 630.000, 420.000 y 315.000, respectivamente.
¿Cuántos capitales se deben ingresar en tres cuentas para obtener ganancias por interés simple?
En este problema tenemos el caso de una suma de dinero distribuida y depositada en tres cuentas con tres tasas de interes simple distintas. Existe una tasa de interés simple cuando el interés generado sobre el capital no es acumulativo en el tiempo. El modelo de interés simple es descrito por la siguiente fórmula:
C' = C · (1 + r / 100)
Donde:
C - Capital inicial.C' - Capital final.r - Tasa de interés, en porcentaje.A continuación, describimos la ganancia registrada en cada cuenta tal que produce la misma ganancia:
Cuenta al 2 %:
z = x · (2 / 100)
z = 0.02 · x
0.02 · x - z = 0
Cuenta al 3 %:
z = y · (3 / 100)
z = 0.03 · y
0.03 · y - z = 0
Cuenta al 4 %:
z = (1.365.000 - x - y) · (4 / 100)
z = 54600 - 0.04 · x - 0.04 · y
0.04 · x + 0.04 · y + z = 54600
La solución de este sistema de ecuaciones lineales se obtiene mediante métodos numéricos:
(x, y, z) = (630.000, 420.000, 12.600)
Finalmente, el capital depositado en la cuenta al 4 % es:
c = 1.365.000 - 630.000 - 420.000
c = 315.000
Se deposita capitales de 630.000, 420.000 y 315.000 en las cuentas de 2 %, 3 % y 4 %, respectivamente.
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A 17 inch candle burns down in 10 hours. At what rate does the candle burn, in inches per hour?
Answer:
1.7
Step-by-step explanation:
[tex]\frac{17 \text{ in}}{10 \text{ hr}}=1.7[/tex] in/hr
K
A pharmaceutical company receives large shipments of aspirin tablets. The acceptance sampling plan is to randomly select and test 59 tablets, then accept the whole batch if there is
only one or none that doesn't meet the required specifications. If one shipment of 3000 aspirin tablets actually has a 2% rate of defects, what is the probability that this whole
shipment will be accepted? Will almost all such shipments be accepted, or will many be rejected?
The probability that this whole shipment will be accepted is
(Round to four decimal places as needed.)
4
Answer:
The probability that this whole shipment will be accepted is 72.39%.Step-by-step explanation:
The probability of no defects with 2% rate of defects:
P(no defects) = 59*0.02⁰*(1 - 0.02)⁵⁹ = 0.3583 (rounded) = 35.83%Probability of exactly one defect:
P(1 defect) = 59*0.02¹*(1 - 0.02)⁵⁸ = 0.3656 (rounded) = 36.56%Probability of one or no defects:
P(1 or none) = 35.83% + 36.56% = 72.39%This indicates that:
100% - 72.39% = 27.61% of shipments will be rejected, it is a lot, so many shipments will be rejectedThe probability that this whole shipment will be accepted is 72.39%.
One factor of f (x ) = 4 x cubed minus 4 x squared minus 16 x + 16 is (x – 2). What are all the roots of the function? Use the Remainder Theorem.
A factor of f(x) is (x – 1).
A factor of f(x) is (x + 1).
Both (x – 1) and (x + 1) are factors of f(x).
Neither (x – 1) nor (x + 1) is a factor of f(x).
The answer is option A) A factor of f(x) is (x – 1).
What is the remaining theorem?
Remainder Theorem is a method for dividing polynomials according to Euclidean geometry. This theorem states that when a polynomial P(x) is divided by a factor (x - a), which isn't really an element of the polynomial, a smaller polynomial is produced along with a remainder.
f(x) = 4x3 - 4x2 - 16x + 16 [Given]
One aspect is (x - 2)
The remaining theorem is used to:
Where q(x) is the quotient polynomial and r(x) is the remainder polynomial, f(x) = (x-2)q(x) + r(x).
As (x-2) is a factor of f, r(x) equals 0. (x)
f(x) = (x-2)·q(x) (x)
q(x) = f(x)/ (x-2) (x-2)
[4x3 - 4x2 - 16x + 16]/ (x - 2) (x - 2)
= [4x2 (x - 1) - 16 (x - 1)]
/ (x - 2) (x - 2)
By even more simplifying
= [(x - 1) (4x2 - 16)]
/ (x - 2) (x - 2)
excluding 4 as common
= [(x - 1) 4 (x2 - 4)]
/ (x - 2) (x - 2)
With the use of the algebraic formula a2 - b2 = (a + b) (a - b)
= [(x - 1) 4 (x + 2) (x - 2)]
/ (x - 2) (x - 2)
= [4 (x - 1) (x - 2) (x + 2)]
/ (x - 2) (x - 2)
The roots are therefore 2, -2, and 1.
there the ans is A) A factor of f(x) is (x – 1).
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Solve by factoring.
6^2 − − 12 = 0
Answer:
48
Step-by-step explanation:
1 ) Simplify...
[tex]6^2-\left(-12\right)[/tex]
[tex]=6^2+12[/tex]
[tex]6^2=36[/tex]
[tex]=36+12[/tex]
2 ) Add the numbers...
[tex]36+12 =[/tex]
[tex]48[/tex]
Hope this helps! :)
does a low outlier cause the mean to be lower than the median?
pretty sure it does just making sure :)
Answer:
yesss
Step-by-step explanation:
A rectangular room, / m long and b m wide,
has a perimeter p, where p = 2l+2b.
a Find the perimeter of a room which is
3.5 m long and 2 m wide.
b Find the length of a room of perimeter
20 m and width 3 m.
The perimeter of the given rectangular room is found as -
Part a: p = 11 m.
Part b: p = 46 m.
Explain the term perimeter of rectangle?A rectangle's perimeter (P) is the sum of the lengths of its four sides.A rectangle has equal size lengths plus two equal widths since its opposite sides are equal.As, given in the question-
The rectangular room has-
l m long and b m wide,
perimeter p, where p = 2l+2b ...eq 1
Part a: perimeter of a room for, 3.5 m long and 2 m wide.
Put l = 3.5 and b = 2 in eq 1.
p = 2l+2b
p = 2(3.5) +2(2)
p = 7 + 4
p = 11 m.
Part b: perimeter of a room for, 20 m long and 3 m wide.
Put l = 20 and b = 3 in eq 1.
p = 2(20) +2(3)
p = 40 + 6
p = 46 m.
Thus, the perimeter of the given rectangular room is found as 46m.
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Jillian sells handmade t- Shirts and large purses; each tea shirt costs $15. Each Large purse goes for $59 and the cost of small purses is $32 each. In the first week she sold 4 t-shirts and 3 large purses and 9 small. In the second week she sold another 5 t-shirts, 7 large bags and 4 small ones. Last week she sold 8 t-Shirts and also sold 3 large purses and 5 small purses. What was the exact amount she made in 3 weeks?
Answer:
$1598
Step-by-step explanation:
1st week
4*15=60
32*9=288
59*3=177
60+177+288=525
2nd week
5*15=75
59*7=413
32*4=128
75+413+128=616
3rd week
8*15=120
3*59=177
5*32=160
120+177+160=457
525+616+457=$1598