Answer:
28.3
Step-by-step explanation:
2 x r x pi = 9 x pi = 28.27433388
to the nearest tenth 28.3
Find the slope of the line.
Answer:
undefined
Step-by-step explanation:
The slope of a vertical line is undefined, and can't be found. This is because the denominator of the rise over run fraction is always 0.
Suppose that a news article refers to a poll that surveyed 886 registered voters and carries a margin of error of plus or minus 3.5 percentage points. Assume a 95% confidence level, and calculate the margin of error. Is your answer 3.5%
Answer:
no its not 3.5
In the diagram, BC is a radius of C. Determine whether AB is tangent to C. Explain your reasoning.
Answer:
No, AB is not tangent to C.
If it were tangent, it would form a right angle with the radius, and we could use Pythagorean's Theorem.
3²+6²=7²
9+36=49
45=49 Since this is false, it's not a right angle, and AB is not tangent.
Step-by-step explanation:
No, AB is not tangent to C.
If it were tangent, it would form a right angle with the radius, and we could use Pythagorean's Theorem.
3²+6²=7²
9+36=49
45=49 Since this is false, it's not a right angle, and AB is not tangent.
The line segment AB is not a tangent to C since it is not perpendicular to BC.
What is the relationship between a tangent and the radius from the point it touches the circle?The tangent is perpendicular to the radius of the circle joined from the center to the point at which the tangent touches the circle.
What is the Pythagorean theorem?The Pythagorean theorem states that in a right-angled triangle, the sum of the squares of the sides is equal to the square of the hypotenuse.
z² = x² + y²
The line segment AB would be a tangent if the triangle ABC is a right-angled triangle. We can use the Pythagorean theorem.
7² = 3² + 6²
49 = 9 +36
49 = 45
This is incorrect.
49 ≠ 45
This means that the triangle is not a right-angled triangle. This in turn means that AB is not a tangent to C.
We have determined that AB is not a tangent to C as it is not perpendicular to BC.
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Please help❗️❗️ Picture is above
Answer:
Step-by-step explanation:
The angles are equal to each other (vertical angles)
Hence:
9y + 7 = 2y + 98
9y - 2y = 98 - 7 (Minus both sides by 2y and 7)
7y = 91 (Simplify)
y = 13 (Divide both sides by 7)
You have the opportunity to purchase a MLB Franchise. The probability distribution of expected returns for the franchise is as follows:
Probability Rate of Return
0.1 –20%
0.2 0%
0.4 7%
0.2 15%
0.1 25%
The expected rate of return for your investment in the MLB Franchise is____Expected rate of return = ∑Piki. The standard deviation is_____.
Answer:
The expected rate of return is 6.3%.
The standard deviation is of 11.29%.
Step-by-step explanation:
Expected rate of return
Multiply each rate by its probability. So
[tex]E = 0.1(-20) + 0.2(0) + 0.4(7) + 0.2(15) + 0.1(25) = 6.3[/tex]
The expected rate of return is 6.3%.
Standard deviation:
Square root of the difference squared between each value and the mean, multiplied by the probability. So
[tex]S = \sqrt{0.1(-20-6.3)^2 + 0.2(0-6.3)^2 + 0.4(7-6.3)^2 + 0.2(15-6.3)^2 + 0.1(25 - 6.3)^2} = 11.29[/tex]
The standard deviation is of 11.29%.
Hi, could anyone help please ? I can't manage to get this right...
So everything you have now is right so far:
[tex]\cos(24) = \frac{z}{118}[/tex]
Multiply 118 to the left side to isolate z
[tex]118\cdot\cos(24) = z[/tex]
z = 50.05
Hope this helps
Which expressions are equivalent to -4(3d-2)-7−4(3d−2)−7minus, 4, left parenthesis, 3, d, minus, 2, right parenthesis, minus, 7 ? Choose all answers that apply: Choose all answers that apply: (Choice A) A -12d-15−12d−15minus, 12, d, minus, 15 (Choice B) B 12d-1512d−1512, d, minus, 15 (Choice C) C None of the above
Answer: I helped you now I helped me
Step-by-step explanation:
Would you shoutout me if I poured shamrock shake on my headYou
Answer:
its C aka none of the above
Step-by-step explanation:
Have a good day:))
giving the brainliest answer to who can ever help me out!!! AND has the correct answer need help asap!
Answer:
B
Step-by-step explanation:
Answer:
The ratio of a 45-45-90 traingle is 1:1:[tex]\sqrt{2}[/tex].
Find the solution(s) to the system of equations below:
3x - 5y = 3 and y = 3x2 - 4x + 1
Answer:
The solutions I found to this system of equations are (1, 0) and (⁸/₁₅, -7).
I keep second guessing and recalculating the second point there, so I'd suggest double-checking it by going through the work yourself. The first one checks out though.
Step-by-step explanation:
Let's solve this by substitution, where one equation is solved for one variable and substituted in to the other. As the latter equation is already solved for y, we can simply substitute it into the other:
given:
y = 3x² - 4x + 1
3x - 5y = 3
then:
3x - 5(3x² - 4x + 1) = 3
Which we can then simplify and solve:
3x - 15x² + 20x - 5 = 3
-3x + 15x² - 20x + 5 = -3
15x² - 23x = -8
Now we can find find the solution by completing the square:
15(15x² - 23x) = 15(-8)
225x² - 345x = -120
225x² - 345x + (23/2)² = -120 + (23/2)²
225x² - 345x + 529/4 = -120 + 529/4
(15x - 11.5)² = -120 + 132.25
(15x - 11.5)² = 12.25
15x - 11.5 = ± √12.25
15x - 11.5 = ± 3.5
15x = 11.5 ± 3.5
x = (11.5 ± 3.5) / 15
x = 15 / 15, and 8 / 15
x = 1, and 0.5333...
Now that we have x, we can solve for y.
given: 3x - 5y = 3
for x = 1:
3 - 5y = 3
y = 0
for x = ⁸/₁₅:
3(⁸/₁₅) - 5y = 3
5y = 3(⁸/₁₅) - 3
5y = ²⁴/₁₅ - ⁴⁵/₁₅
5y = -²¹/₁₅
y = -²¹/₃
y = -7
So the solutions to this system of equations are (1, 0) and (⁸/₁₅, -7).
Sharon made a scatterplot comparing the shoulder heights of dogs to their weights.
120
110-
100
90
80
Weight (pounds)
70
60
50
40-
30
20
10
2 4
6
8 10 12 14 16 18 20 22 24 26 28 30
Height (inches)
Sharon's dog has a shoulder height of 28 inches. Using a linear model, which is the best prediction of her dog's weight?
A 85 pounds
B 90 pounds
C105 pounds
D 120 pounds
Answer:
105
Step-by-step explanation:
Answer:
I think 105 and it is this because it is correct try the answer. ✅
I need some help on this thanks!!!
-
Answer:
The 4th option, 10g + 24 = t
Step-by-step explanation:
It costs 24 dollars per month no matter what.
$10 * the amount of GB you want
Add those two values to get the total cost per month.
In this case you want 5 GB, so substitute the g in the equation for 5. You will get:
10 * 5 +24 = t
50 + 24 = t
74 = t
So it costs 74 dollars per month to get 5 GB.
help me
make X the subject of the formula
3(c - bx) = 18
make X the subject
Answer:
X is equal to c-9 over b as required
Answer:
[tex]c =\frac{18 + 3 b x}{3}[/tex]
Step-by-step explanation:
3 ( c - b x ) = 18
Solve the brackets.
3c - 3 b x = 18
Take -3 b x to the right side.
3c = 18 + 3 b x
Divide both sides by 3.
[tex]c =\frac{18 + 3 b x}{3}[/tex]
Omar wants to determine cos(- (2pi)/3) using the ratios of the 30 degrees - 60 degrees - 90 degrees right triangle . How shoulc he use this information to determine cos(- (2pi)/7)
Answer:
its D
Step-by-step explanation:
The right angle triangle with 30-60-90 degrees is the special triangle in which these angle will have the side ratio of 1, [tex]\sqrt{3} [/tex] and 2. The value of the [tex] \cos\dfrac{(-2\pi)}{3} [/tex] which Omar wants to determine is -1/2.
Given information-
Omar wants to determine the value of
[tex] \cos\dfrac{(-2\pi)}{3} [/tex]
As the degree is in the pi form. Use the conversion rate [tex]\dfrac{180}{\pi} [/tex] to convert the degree,
[tex]=\dfrac{(-2\pi)}{3} \times\dfrac{180}{\pi} [/tex]
[tex]=-120[/tex]
As the angle -120 degrees is in the third quadrant hence the reference angle is 60 degrees(by calculating as (180-theta).
30-60-90 triangleNow the right angle triangle with 30-60-90 degrees measure angle. Such angle will have the side ratio of 1, [tex]\sqrt{3} [/tex] and 2.
Here 2 is the hypotenuse of the right triangle. The side opposite to the angle measure [tex]\sqrt{3} [/tex] and the side adjacent to the angle measures 1 in ratio.
Now the cos theta is the ratio of the adjacent side and hypotenuse thus,
[tex] \cos\dfrac{(-2\pi)}{3} =-\dfrac{1}{2} [/tex]
Negative sign is used for the third quadrant where x axis is negative.
[tex] \cos\dfrac{(-2\pi)}{3} =-\dfrac{1}{2} [/tex]
Thus the value of the [tex] \cos\dfrac{(-2\pi)}{3} [/tex] which Omar wants to determine is -1/2.
Learn more about the trigonometry here;
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Name and find the measure of each angle in the figure.
HELP PLEASE
This is really urgent!!!
Step-by-step explanation:
=4(x-1)-3(2x-5)
=4x-4-6x+16
=4x-6x-4+16
= -2x+12
hope it helps.
Answer:
2x + 11
1.) Distribute
4(x-1)-3(2x-5)
4x -4 -3 (2x-5)
2.) Connect like terms
4x -4 -6x + 15
-2x -4 +15
3.) Calculate
-2x + 11
Please help
For 20 points
Answer:
Step-by-step explanation:
Vertex: ( -2, -25)
Axis of symmetry: -2
Can you help me here is the image
Answer:
C. y= 1.5x
Step-by-step explanation:
Everytime multiply the first number 1.5 (y) by the X variables it gives you another Y variable. For example, 1.5 times 2 = 3. 1.5 times 3 = 4.5. And 1.5 times 4 = 6!
PLEASE ANSWER ASAP FOR BRAINLEST !!!!!!!!!!!!!!!!!!!!
Answer:
your answer will be Option C.256
Step-by-step explanation:
hope it helps
I GIVE BRAINLIEST FOR EXPLANATION AND CORRECT ANSWER EXTRA POINTS
Answer: 125.66
Step-by-step explanation: my explanation is i searched it
Rite Aid sells a six pack of fruit cups for $2.88 what is the unit cost price per fruit cup?
Answer:
0.48
Step-by-step explanation:
2.88/6=0.48
Answer:
2.88 / 6 = 0.48
Explanation:
tate rents some tables for $362 and some chairs for $3 each for a party. He spends a total of $500. Write an equation.
Answer:
362+3x=500
Step-by-step explanation:
x is the varible and it represents how many chairs you need.
hi
The fair spinner shown in the diagram above is spun.
Work out the probability of getting a factor of 12.
Give your answer in its simplest form.
Answer:
hi.a..a.q.q.q.q..w.w.q.
Which choice is equivalent to the product below?
Answer:
equivalent of √6 . ✓3 is option a. 3√2
√6×3 = √18 = √9. √2 = 3√2
Which is more 7/10 or $0.75?
Answer:
I think $0.75
Step-by-step explanation:
$0.75 because 7/10 is 0.7
Which expressions are equivalent to 8.9 x + 6.2 + 8.7? Check all that apply.
A.9 x + 6 + 9
B. 8.9 + 6.2 + 8.7 x
C. 8.9 x + 8.7 + 6.2
D. 8.7 + 8.9 x + 6.2
E. 6.2 + 8.7 + 8.9
F.6.2 + 8.7 + 8.9 x
G.8.9 + 6.2 x + 8.7
Answer:
option c.
8.9x+8.7+6.2
option f.
6.2+8.7+8.9x
Use the unit price of gasoline at both gas stations to determine which gas station charges more for gasoline (gallons). Be sure to include the unit prices in your answer. Show or explain your work.
Answer: Gas station P
Step-by-step explanation:
When you plot gas station M on the graph all the values are under the line meaning it gas at station M costs less than station G.
Gas station P charges more than gas station M.
What is unit rate?A unit rate means a rate for one of something.
Given is a table and a graph,
When we compare each, we get,
Gas station P is charging $20 for 5 gallons, and gas station M charges $19 for same.
Hence, gas station P charges more than gas station M.
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Need help question #2. Show steps please
Answer:
C
Step-by-step explanation:
We want to evaluate the definite integral:
[tex]\displaystyle \int_0^1 (x+2)(3x^2+12x+1)^{1/2}\, dx[/tex]
Again, notice that the radicand is quite similar to the outside factor. So, we can use u-substitution again. We will let:
[tex]\displaystyle u=3x^2+12x+1[/tex]
Then:
[tex]\displaystyle \frac{du}{dx}=6x+12[/tex]
Hence:
[tex]\displaystyle du=6x+12 \, dx[/tex]
And we can divide both sides by 6:
[tex]\displaystyle \frac{1}{6}\, du=x+2\, dx[/tex]
Note that the limits of integration of our original integral (from x = 0 to x = 1) is in the domain of x. Since we changed variables, we should also change the limits of integration to u. So:
[tex]u(0)=3(0)^2+12(0)+1=1[/tex]
And:
[tex]u(1)=3(1)^2+12(1)+1=16[/tex]
Hence, our new limits of integration is from u = 1 to u = 16.
Perform the substitution:
[tex]\displaystyle =\int_{1}^{16} u^{1/2}\Big(\frac{1}{6}\, du\Big)[/tex]
Simplify:
[tex]\displaystyle =\frac{1}{6}\int_1^{16}u^{1/2}\, du[/tex]
Integrate:
[tex]\displaystyle =\frac{1}{6}\Big(\frac{2}{3}u^{3/2}\Big)\Big|_{1}^{16}[/tex]
Simplify:
[tex]=\displaystyle \frac{1}{9}\Big(u^{3/2}\Big|_1^{16}\Big)[/tex]
Evaluate:
[tex]\displaystyle =\frac{1}{9}\Big(16^{3/2}-1^{3/2}\Big)=\frac{1}{9}(64-1)=7[/tex]
The answer is C.
Mirela cut wrapping paper in the shape of the net below to cover a present. What is the surface area of her gift?
Answer is in the file below
tinyurl.com/wpazsebu
PLZZZZZ HELPPPP MEEE!!!!
Answer:
Step-by-step explanation:
area = (3x³y)(2xy + x⁵)
= 3x³y·2xy + 3x³y·x⁵
= 6x⁴y² + 3x⁸y
solve please
due very soon
need done asap
Answer:
B
Step-by-step explanation:
Both triangles are similar. The similarity ratio between AB and EF is 4, which must mean that FG is BC (60)/4. The area of a rectangle is base x height -> 6.25 x 15 = 93.75 square cm
Hope this helps!