Answer:
x=2.5, y=-4.33
Step-by-step explanation:
[tex] x = 5 \times cos( - 60) = 2.5[/tex]
[tex]y = 5 \times \sin( - 60) = - 4.33[/tex]
36. A survey provides the data shown.
2, 5, 6, 6, 7, 7, 8, 8, 9, 11, 13
Which box plot represents the data?
T --
0
5
10
15
+→
15
5
10
+
0
5
10
15
D
--
0
5
10
15
Answer:
ad r4
Step-by-step explanation:
rfrrrrfe
May runs 10/4 miles everyday .Beth runs 5/2 miles everyda.who runs further?
Explanation:
The fraction 5/2 turns into 10/4 when you multiply top and bottom by 2
5*2 = 10
2*2 = 4
Or you could use long division or a calculator to notice that
5/2 = 2.5
10/4 = 2.5
Both result in the same exact decimal value, so the fractions must be equal. Each person runs exactly 2.5 miles everyday.
Help please I’m stuck on these questions since I’ve been out of school for a week and is confused .
ANSWER THE QUETIONS CORRECTLY FOR BRAINLIEST (ALGEBRA)
What is the slope of the line in this graph?
А.5/9
В.5/7
C. 7/5
D. 9/7
Answer:
5/7
Step-by-step explanation:
It goes up 5, and goes to the right 7.
What is P(A, B, and C)? They are independent.
P(A) = .66
P(B) = .52
P(C) = .78
If each of A, B, and C are mutually independent, then
P(A and B and C) = P(A) P(B) P(C)
so that the probability of the three-way intersection is
P(A and B and C) = 0.66 × 0.52 × 0.78 = 0.267696 ≈ 0.27
8. A woman decides to go for a 10-minute run every day this week and plans to increase the time of her daily run by 4 minutes each week. Write a formula for the time of her run after n weeks. How long will her daily run be 8 weeks from today?
Answer:
t(n) = 4n + 1058 minutesStep-by-step explanation:
Initial value is 10 minutes and additional time is 4 minutes per week.
This is a linear function with
y-intercept b = 10slope m = 4The formula for the time of run after n weeks is
t(n) = 4n + 10, where t(n) - run time after n weeksDaily run time after 8 weeks is
t(8) = 4*8 + 10 = 58 minutesTwo consecutive integers have a sum of 55. Find the integers.
0.0
Х
?
Answer:
27 and 28
Step-by-step explanation:
x+x+1=55
2x+1=55
2x=55-1
2x=54
divide each side by 2
x=27
x+1=28
check your answer adding the two integers
27+28=55
In circle O below, segment RA is a diameter, arc RP = 98 degrees, and arc RQ = 68 degrees. Find the
measure of the indicated angle m<2=
Answer:
90°.
Step-by-step explanation:
if AR is diameter and the angle ∠AOR (it's m∠2) is based on this diameter, then its measure is 90°. It is central angle.
Please help!! Detailed steps please! Thank you so much
Which equation is equivalalent to 2x²-24x-14=0
A. (x-6)²=50 B. (x-3)²=13 C. (x-3)²=20 D. (x-6)²=43
Answer:
D
Step-by-step explanation:
2x²-24x-14=0
2(x²-12x-7)=0
x²-12x-7=0
Expand A, B, C, D
A. (x-6)²=50 => x²-12x+36=50 => x²-12x-14=0 [not correct]
actually from here you can see B, C are not correct
D. (x-6)²=43 => x²-12x+36=43 => x²-12x-7=0 [correct)
How do you solve a perfect square trinomial??
Answer:
Step-by-step explanation:
Here's an example:
x^2 + 6x + 9 = 0
First factorise it:
(x + 3)(x + 3) = 0
So the solution is x = -3 (multiplicity 2)
That is there are 2 roots both -3.
what is the answer to this question ?
the given expression does not represent a polynomial
<~~• ¥ Pls HELP me!! ¥ • ~~>
Pls help me figure out the 3 boxes left pls help meet
Answer:
First box - divide both by 2
Second box - subtract 8 by 6
last box - subtract x
Answer:
1. 2
2. 4
3. 20
4. 10
5. 4
6. 4
Step-by-step explanation:
I'm not sure about the last one.
hope this helps
have a good day
Question 1 of 20
t cost Andrea $50 per day to rent a moving truck and an additional $3 for
every mile that she drove it. If Andrea spent a total of $104 after renting the
ruck for 1 day, which equation shows how many miles Andrea drove?
O A.
104
3
= 50x
OB. 50+3x = 104
OC. 3+50x= 104
The equation that shows the miles Andrea drove is $104 = $50 + $3x.
What is the equation that shows the miles Andrea drove?The total cost of renting the moving truck is a function of the cost to rent per day and the total miles driven. The cost to rent the truck per day is the fixed cost while the cost per mile is the variable cost.
Total cost = cost to rent per day + (cost per mile x total mile driven)
$104 = $50 + $3x
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Find the equation of the rational function ƒ whose graph satisfies the conditions: Horizontal asymptote is y = 3, vertical asymptote is x = –5, removable discontinuity at x = 2, x-intercept is 1.
A function assigns the values. The function is f(x) = (8x - 8)/(x² + 2x).
What is a Function?A function assigns the value of each element of one set to the other specific element of another set.
A rational function has a denominator and a numerator.
Vertical asymptotes are x-values that the function approaches but never touches. By setting the denominator to zero, we may discover the vertical asymptotes.
Since the vertical asymptote is x=-2 and x=0, our denominator of the function will be
x(x+2) = x²+2x
Horizontal asymptotes are y values that the function approaches but never touches. Because the horizontal asymptote is y=0, the numerator's degree must be less than the denominator's degree. And because the x-intercept is equal to one, our numerator will be
x - 1
At the moment, The function can be assumed to be,
f(x) = (x - 1)/(x²+2x)
Next, we need to use the condition f(2)=1. If we plug in x=2, f(x) should equal 1. But we need to multiply the right side of the function by some constant C.
The condition f(2)=1 must then be applied. If we substitute x=2, f(x) should equal 1. However, we must multiply the right side of the function by a constant C.
1 = C(2 - 1)/(2²+2(2))
Solve for C.
1 = C / 8
8 = C
So the function will be
f(x) = [8(x - 1)] / [(x² + 2x)]
f(x) = (8x - 8) / (x² + 2x)
Hence, the function is f(x) = (8x - 8)/(x² + 2x).
Learn more about Function:
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PLEASE HELP IF YOU CAN!!! 100 POINTS
Combined, there are 182 Asians, Africans, Europeans, and Americans in a village. The number of Asians exceeds the number of Africans and Europeans by 59. The difference between the number of Europeans and Americans is 14. If the number of Africans isdoubled, their population exceeds the number of Europeans and Americans by 16. Determine the number of Asians, Africans,Europeans, and Americans in this village.
Answer:
Asians - 114, Africans - 28, Europeans - 27, Americans - 13Step-by-step explanation:
Let
Asians - a, Africans - b, Europeans - c, Americans - dEqautions as per question
Combined, there are 182 Asians, Africans, Europeans, and Americans in a village.
a + b + c + d = 182The number of Asians exceeds the number of Africans and Europeans by 59.
a = b + c + 59The difference between the number of Europeans and Americans is 14.
c - d = 14 ⇒ c = d + 14If the number of Africans isdoubled, their population exceeds the number of Europeans and Americans by 16
2b = c + d + 16 ⇒ 2b = d + 14 + d + 16 ⇒ 2b = 2d + 30 ⇒ b = d + 15Substitute a, b and c into the first equation and solve for d
(b + c + 59) + b + c + d = 182d + 15 + d + 14 + 59 + d + 15 + d + 14 + d = 1825d + 117 = 1825d = 182 - 1175d = 65d = 65/5d = 13Find the other variables
b = 13 + 15 = 28c = 13 + 14 = 27a = 28 + 27 + 59 = 114We found that
Asians - 114, Africans - 28, Europeans - 27, Americans - 13
The epicenter of an earthquake is the point on Earth's surface directly above the earthquake's origin. A seismograph can be used to determine
the distance to the epicenter of an earthquake. Seismographs are needed in three different places to locate an earthquake's epicenter. Find the
location of the earthquake's epicenter if it is 4 miles away from A (5,2), 3 miles away from B (-2,2), and 5 miles away from C (1, -3).
Answer:
The coordinates of the epicenter are (1,2) ie x=1, y =2
Step-by-step explanation:
We use the fact that the distance d between 2 points, (C y₁) and (x₂, y₂) is computed by the Pythagorean formula:
(x₁ - x₂)² + (y₁ - y₂) = d²
Let the epicenter be located at (x, y)
Distance dA from point A(5,2) is known to be 4 and is given by the equation:
(x-5)² + (y - 2)² = dA² = 4² = 16 ==>
(x-5)² + (y-2)² = 16 (1)
Similarly, the distance from point B(-2,2) is given as 3. Therefore,
(x - (-2))² + (y-2)² = 3² = 9 or
(x + 2)² + (y-2)² = 9 (2)
Distance from point C(1,-3) ==>
(x-1)² + (y-(-3))² ==> (x-1)² + (y +3)² = 25 ...(3)
(1) - (2) cancels out the y terms and gives us
(x-5)² - (x+2)² = 7 (4)
This simplifies to
x² + -10x + 25 - (x² +4x + 4) = 7
or
x² + -10x + 25 -x² -4x - 4 = 7
-10x -4x = 7 - 21 = -14
Therefore, -14x = -14 giving us x = 1
Substituting for x = 1 in equation (3) gives us
(1-1)² + (y+3)² = 25 or
y + 3 = √25 = 5 giving y = 2
So we get the epicenter coordinates as x=1, y =2
Crosscheck in each of the equations (1), (2) and (3) for consistency
Equation 1 : (1-5)² + (2-2)² = -4² = 16 Check!
Equation 2: (1-(-2))² + (2-2)² = (1+2)² = 3² = 9 Check!
Equation 3: (1-1)² + 2-(-3))² = (2+3)² = 5² Check!
What is the answer to this question
Answer:
11x^2+4x-6
Step-by-step explanation:
Can't tell if its asking for the values of x, but thats the final expression^
Answer:
11[tex]x^{2}[/tex]+4x-6
Step-by-step explanation:
A line passes through the points (-2, 9) and (-1, 0). What is its equation in slope-intercept form?
Answer:
y=-9x-9
Step-by-step explanation:
Just plug in your Ys and Xs in order to get y=-9x-9
SOMEONE PLEASE HELP ME!!!
What are the x-intercepts of the graph of the function y=6tan(x/2)-3?
Step-by-step explanation:
[tex]y = 6 \tan( \frac{x}{2} ) - 3[/tex]
Set y=0
[tex]0 = 6 \tan( \frac{x}{2} ) - 3[/tex]
[tex]3 = 6 \tan( \frac{x}{2} ) [/tex]
[tex] \frac{1}{2} = \tan( \frac{x}{2} ) [/tex]
[tex] \tan {}^{ - 1} ( \frac{1}{2} ) + \pi = \frac{x}{2} [/tex]
Multiply both sides by 2
[tex]2 \tan {}^{ - 1} ( \frac{1}{2} ) + 2\pi = x[/tex]
So the x intercepts of the function is
[tex]2 \tan {}^{ - 1} ( \frac{1}{2} ) + 2\pi[/tex]n
Use the stem and leaf plot graph to answer the question.
====================================================
Explanation:
Count the number of leaves marked in green.
Row One: 2 leaves (1 and 8)Row Two: 3 leaves (3, 6, and 9)Row Three: 5 leaves (2, 3, 4, 6, 7)Row Four: 3 leaves (1, 6, and 8)There are 2+3+5+3 = 13 leaves total. This represents tickets were sold on 13 days.
Each stem and leaf combines to form a different ticket count. For instance, the stem of 1 and leaf of 8 combine to get the value 18. So 18 tickets were sold on that particular day.
Rationalise the following:
(Root3-1) / (root3+1)
Answer:
[tex]2-\sqrt{3}[/tex]
Step-by-step explanation:
[tex]\begin{aligned}\dfrac{\sqrt{3}-1}{\sqrt{3}+1}\times \dfrac{\sqrt{3}-1}{\sqrt{3}-1} &=\dfrac{(\sqrt{3}-1)(\sqrt{3}-1)}{(\sqrt{3}+1)(\sqrt{3}-1)}\\\\ & =\dfrac{\sqrt{3}\sqrt{3}-\sqrt{3}-\sqrt{3}+1}{\sqrt{3}\sqrt{3}-\sqrt{3}+\sqrt{3}-1}\\\\ & =\dfrac{4-2\sqrt{3}}{2}\\\\ & = 2-\sqrt{3}\end{aligned}[/tex]
|x-(-12)|; if x>-12 pls help!!!!
Answer:
because -12 is smaller than x
Step-by-step explanation:
for example some one got 14$ and lost 12$ it mean this -12 and the remaining keep it as 12$ no plus sign
A line remains _______ if the center of dilation is on the line
Answer:
same
Step-by-step explanation:
A line remains same if the center of dilation is on the line.
If f(x) = 5x, what is f-1(x)?
Answer:
[tex]y = \frac{x}{5}[/tex]
Step-by-step explanation:
I am going to assume that by "f-1(x)" you mean [tex]f(x)^{-1}[/tex], which makes this an inverse function problem. To find the inverse of a function, simply swap x and y, then solve for y.
[tex]x = 5y\\y = \frac{x}{5}[/tex]
What is the solution to the equation 7/8 (X -1/2) =49/80
Answer:
the answer of given question is 1/5
(x - 3)2 – 4 = x2 - 6x +
Answer:
123-456-789
Step-by-step explanation:
es la suprimeral
Please select the correct answer!
Answer:
the value of x must be -2 . ie option b
Answer:
x-1=-x²+2x+5
-x²+(2x-x)+(5+1)=0
-x²+x+6=0
(x-3)(x+2)
x=3 or x=-2
List the angles of ABC in order from largest to smallest.
Answer:
BCA
CAB
ABC
that kind of triangle is a scalene triangle, meaning there are no equal sides. if you see, B is the smallest of the sides and C is the largest, so A is in the middle.
PLease help! Thanks!