Answer:
2 years: 203 years: 404 years: 80Step-by-step explanation:
There are several ways you can find the values of an exponential function for different values of the independent variable. You can read them from its graph, evaluate the formula, or recognize the relationship between the values.
P(t) for different tThe graph shows you the population is 10 in year 1, up by a factor of 2 from the population of 5 in year 0. The exponential nature of the function means the population will double in each of the next few years:
2 years: 2 × 10 = 20
3 years: 2 × 20 = 40
4 years: 2 × 40 = 80
__
Additional comment
You can always use a calculator to evaluate the function for different values of t.
what is m
help ASAP pleasee!!
The sum of angles of a triangle equals 180°.
Therefore:
|∠EAB| + |∠ABE| + |∠BEA| = 180°
Susbtitute
|∠EAB| = 14°
|∠ABE| = 45°
|∠BEA| = x°
14° + 45° + x° = 180°
59° + x° = 180° |subtract 59° from both sides
x° = 121°∠BEA and ∠CED are vertical angles. Vertical angles are congruent, meaning that they have the same angle measure.
Therefore
|∠CED| = 121°In ΔCDE:
|∠CED| + |∠DCE| + |∠EDC| = 180°
Substitute:
|∠CED| =121°
|∠DCE| = 27°
|∠EDC| = y°
121° + 27° + y° = 180°
148° + y° = 180° |subtract 148° from both sides
y° = 32°|∠EDC| = 32°HELPPP PLSSS
The center of an eclipse is located at (0, 0). One focus is located at (12, 0), and one directrix is at x = 14 1/2
The equation that represent the eclipse in the image attached is option A.
What is the ellipse equation about?We were given:
The center of an ellipse (0, 0).
One focus is located at (12, 0),
One directrix is at x = 14 1/12.
To Find the equation of the ellipse will be:
The standard equation of an ellipse is : [tex]\frac{(x- h )^ 2}{a^2} + \frac{(y - k)^2}{b^2}[/tex]
Note that c = 12
One need to compare the equation of directrix with the above equation:
a^2/c = 14[tex]\frac{1}{12}[/tex]
a^2/c = 169/12
Then Substitute the value c=12 and solve for a.
a^2/12 = 169/12
a² = 169
a = 13
Use the equation of c² = a² - b² to find b.
= (12)² = (13/12)² - b²
b²= 169-144
b²= 25
b = 5
Then substitute the value of a and b into the standard equation of the ellipse.
[tex]\frac{(a- h )^ 2}{a^2} + \frac{(y - k)^2}{b^2}[/tex]
[tex]\frac{(x- 0 )^ 2}{13^2} + \frac{(y - 0)^2}{5^2}[/tex]
Therefore: [tex]\frac{(x)^ 2}{13^2} + \frac{(y)^2}{5^2}[/tex]
Hence, The equation that represent the eclipse in the image attached is option A.
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Find all the missing sides and angles of this triangle.
I know angle a, and c but not the missing sides!
Answer:
24 and 25
Step-by-step explanation:
Angle a will be 20° because angle a+angle b=90°
angle c is 90°(right angle)
now to find the sides we will have to do a Pythagoras theorem for this indirectly therefore:
7²=49/2 sides
=24.5
therefore one side will be 24 the other side will be 25
if I am right mark as brainliest
(03.01 MC) The length of a rectangle is 5 units and its width is 4 units. What is the approximate length of the diagonal of the rectangle? O 5 units ( 03.01 MC ) The length of a rectangle is 5 units and its width is 4 units . What is the approximate length of the diagonal of the rectangle ?
Answer:
√41, or about 6.4 units
Step-by-step explanation:
[tex] \sqrt{ {5}^{2} + {4}^{2} } = \sqrt{25 + 16} = \sqrt{41} [/tex]
√41 is about 6.4 units
Lucy writes down her phone number by breaking it down into the format (949) 205-6630 instead of as a continuous 10-digit string (9492056630). What strategy is Lucy employing to recall her phone number
The strategy that Lucy uses to recall her phone number is what is known as Chunking.
What is Memory?This refers to the place where information is stored for future use and can either be a short or long-term memory.
Hence, we can see that based on the breaking down of her phone numbers of Lucy into a particular format that separates them using country/state code, she is making use of chunking.
This method of chunking is effective because it would help Lucy to recall her number quite easily.
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19
Select the correct answer from each drop-down menu.
Mr. Montoya instructs the students in his math class to draw a rectangle with a certain area. Catlynn draws a rectangle with a length
18 centimeters and a width of 6 centimeters.
This proportional situation represents
variation.
The constant of variation, k, is equal to
if Sergio draws a rectangle with a length of 27 centimeters, the width of the rectangle must be
centimeters.
Reset
Next
The constant of variation, k, is equal to 108. This is an inverse proportion and when L is 27 cm, W is 4 cm
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
The length (L) is inversely proportional to the width (W), hence:
L = k/W
18 = k/6
k = 108
When L = 27:
27 = 108/W
W = 4
The constant of variation, k, is equal to 108. This is an inverse proportion and when L is 27 cm, W is 4 cm
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Which of the following is not a real number?
Answer:
[tex]\sqrt{-3}[/tex]
Step-by-step explanation:
Since each of these answers contain a radical, you want to find the one that has a negative value, because technically sqrt(some negative number) isn't defined, or rather it has no real solution. This is because you can rewrite a radical as [tex]\sqrt{a * b} = \sqrt{a} * \sqrt{b}[/tex]. And since [tex]i = \sqrt{-1}[/tex] you can rewrite [tex]\sqrt{-3}[/tex] as [tex]\sqrt{-1} * \sqrt{3}[/tex] which becomes [tex]i\sqrt{3}[/tex]
A building produces a shadow that is 73 feet long when the elevation of the sun is 59°. What is the height of the building to the nearest foot? It may be necessary to draw a picture to work through this problem.
The height of the building to the nearest foot is 121.5 ft.
How to find height of the building?The height of the building can be found using trigonometric ratios.
Therefore,
tan 59° = opposite / adjacent
tan 59°= h / 73
cross multiply
h = 73 tan 59°
h = 73 × 1.66427948235
h = 121.492402212
h = 121.5 ft
Therefore, the height of the building to the nearest foot is 121.5 ft.
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(2a²-a²-7a+2)÷(a-2) Answer Please
Answer:
2a^2 + 3a - 1 ,
Step-by-step explanation:
I am assuming you mean
2a^3-a^2-7a+2
By long division:
a - 2 ) 2a^3 - a^2 - 7a + 2 ( 2a^2 + 3a - 1 <------- Quotient
2a^3 - 4a^2
3a^2 - 7a
3a^2 - 6a
-a + 2
-a + 2
. . . . .
The following two-column proof with missing statements and reasons proves that if a line parallel to one side of a triangle also intersects the other two sides, the line divides the sides proportionally:
The missing statement are:
4. ∠B ≅ ∠B; Reflexive Property of Equality.
5. ΔBDE ~ ΔBAC; Side-Angle-Side (SAS) Similarity Postulate.
What are the proofs?The missing statement are number 4 and 5.
If we say that 4. ∠B ≅ ∠B; Reflexive Property of Equality then:
∠B ≅ ∠B,
Note that there are two triangles, which are ΔABC and ΔDBE and we also have ∠BDE ≅∠BAC and ∠B ≅ ∠B,
∠BDE + ∠B + ∠BED = 180°
∠BAC + ∠B + ∠BCA = 180°
Hence, ∠BED = ∠BCA Substitution property of equality
That birth ΔABC ~ ΔDBE,which is Angle Angle Similarity Postulate
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Answer: 4.∠B ≅ ∠B; Reflexive Property of Equality
5. ΔBDE ∼ ΔBAC; Angle-Angle (AA) Similarity Postulate
Step-by-step explanation:
I just took the test; this exact order should be correct. :D
Drag each number to the correct location on the table. Not all numbers will be used.
The table gives ratios between distance and time. Complete the table to form equivalent ratios.
The table for the complete ratios between distance and time is shown below.
What is the Ratio of Distance to Time?The ratio of distance to time, given that 280 miles will be covered in 4 hours is: 280/4 = 70 miles per hour.
Thus, for 2 hours: 2(70) = 140 miles distance.
For 350 miles, we would have: 350/70 = 5 hours time.
For 6 hours: 6(70) = 420 miles distance.
For 8 hours: 8(70) = 560 miles distance.
For 700 miles, we would have: 700/70 = 7 hours time.
The complete table is shown in the image below.
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Drag the tiles to the correct boxes to complete the pairs.
Match each expression to its simplified form.
The simplification of each form of expression is;
(6r + 7) + (13 + 7r) = 13r + 20(13 - 3/2r) - (1 - r) = 12 - 1/2r(-8 - r) + (2r - 4) = -12 + r(7r - 3/2) - (2/3 + 6r) = r - 13/6Simplification(6r + 7) + (13 + 7r)
= 6r + 7 + 13 + 7r
= 13r + 20
(13 - 3/2r) - (1 - r)
= 13 - 3/2r - 1 + r
= 12 - 3/2r + r
= 12 -3r+2r/ 2
= 12 - 1/2r
(-8 - r) + (2r - 4)
= -8 - r + 2r - 4
= -12 + r
(7r - 3/2) - (2/3 + 6r)
= 7r - 3/2 - 2/3 - 6r
= r -9-4/6
= r - 13/6
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Which side lengths form a right triangle?
Choose all answers that apply:
Answer:
All 3 are right triangles.
Step-by-step explanation:
In a right triangle c^2 = a^2 + b^2 where c is the longest side. ( by Pythagoras).
a) 3^2 = 9, 6^2 = 36 and √27 ^ 2 = 27
36 = 9 + 27
So this is a right triangle.
b)
17^2 = 289, 15^2 = 225 and 8^2 = 64
289 = 225 + 64
Also right triangle.
c) √50 ^ 2 = 50, 5^2 = 25 and 5^2 = 25
So also right triangle.
Which of the following is parallel to the line 2x+4y=16
Answer:
Option C: y=-1/2x + 8
Step-by-step explanation:
So we have the options:
A) y=2x+5
B) y=-1/2x+4
C)y=-1/2x+8
D)y=-2x+5
But first let's define what parallel even is. When two lines are parallel it means that there slope is the same value and the same sign, while there y-intercepts are different, because if they were the same, then they wouldn't be parallel, they would just be the same exact line.
So we're given the equation in standard form. To find the slope we can change it so it's in the form of y=mx+b. This can be done by simply isolating y. The reason we want it in the slope-intercept form is because m represents the slope and b represents the y-intercept. m is the slope because as x increases by 1 the y-value will increase by m. So the "rise" will be m and the "run" will be 1, thus the slope will be m/1 or in other words m because the slope is defined as rise/run. So let's start the steps to isolating y
Original equation
2x+4y=16
Subtract 2x from both sides
4y=-2x+16
Divide both sides by 4
y = -1/2x + 4
Here we have it in slope-intercept form. In this case the slope, or m, is -1/2 and the y-intercept or b is 4. So now let's look at the other equations.
Option A: This equation has a slope of 2, which is not the same as -1/2 so it is not parallel
Option B: This equation has a slope of -1/2 which is the same as -1/2 so it might be parallel. But look at the y-intercept it's 4, that's the same y-intercept as the original equation. This means the two equations are equal and not parallel
Option C: This equation has a slope of -1/2 which is the same as -1/2 so it might be parallel. It has a y-intercept of 8 which is not the same as 4, so the two lines are parallel and not equal! This is the answer
(a) A tank can be filled in 14 hours using 5 taps. If you need to fill it in 10 hours how many taps are needed?
Answer:
3.57 taps
Step-by-step explanation:
14/5 = 10/x hours (divide both sides by 10)
50/14 = x (3.57 taps)
Brainliest, please :)
Answer:
7 taps
Step-by-step explanation:
rate = 1 tank / 5 taps = 14 hr
1 tank = 70 tap-hr
70 tap -hr / x tap = 10 hr
x = 7 taps
1. Which of the following is a polynomial written in standard form? Explain.
x² + 3x - 1
X
5-7x+4x²
3x³ 2x² + 5x-8
2√x +3
please help me im in a rush
Answer: 69m^2
Step-by-step explanation:
we can find the area of shaded region by subtracting the area of removed region.
so,
area of rectangle= length*width
for area of removed region
=4m*2m=8m^2
for area of larger region
=11m*7m=77m^2
Now final destinaltion
area of shaded region=area of lareger region-area of smaller region
=77m^2-8m^2
=69m^2
Goran is going to rent a truck for one day. There are two companies he can choose from, and they have the following prices. Company A charges $93 and allows unlimited mileage. Company B has an initial fee of $65 and charges an additional "$0.80" for every mile driven. For what mileage will Company A charge less than Company B? Use m for the number of miles driven, and solve your inequality for m.
Answer:
m>35
Step-by-step explanation:
We have to find the least m for 65 + 0.8m > 93.
subtract 93 from each side of the inequality: 0.8m > 28
divide both sides of the inequality by 4: 0.2m > 7
multiply both sides of the inequality by 5 to find m: m>35.
On a coordinate plane, A line is drawn from point Fernando to point Maria. Fountain is labeled in between the 2. Fernando is at (negative 4, negative 2) and Maria is at (4, 2).
Fernando and Maria are at opposite sides of a park. They plan to meet later at a fountain that is located somewhere between them. Maria will arrive at the fountain first, before Fernando even leaves his starting location. The ratio of Maria's starting location to the fountain to Fernando's starting place is 5:3. What is the location of the fountain? Round to the nearest tenth, if necessary.
(, )
The location of the fountain as described in the task content is; (-1, -0.5).
What is the location of the Fountain?According to the task content, the locations of Fernando and Maria are given as; (-4, -2) and (4,2) respectively and the ratio of division is expected to be; 5: 3.
Hence, the coordinates of the fountain can be evaluated as;
x = (4) - (4-(-4)) × (5/8) = -1.
y = 2 - (2-(-2)) × (5/8) = -0.5
Hence, it follows that the coordinates of the fountain location is; (-1, -0.5) since the fountain is closer to Fernando than Maria.
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Answer:
-1 AND -0.5
Step-by-step explanation:
Which is equal to K−L ?
K=[1325 7 18] L=[619 10 18]
[76−30]
[−7−630]
[7847570324]
[13251018]
The result of the subtraction of the vectors is: [706 -3 0].
What is the result of a subtraction of vectors?To subtract two vectors, we subtract the corresponding elements.
In this problem, the vectors are given as follows:
K = [1325 7 18].L = [619 10 18].The subtractions of the corresponding elements are:
1325 - 619 = 706.7 - 10 = -3.18 - 18 = 0.Hence the result is:
[706 -3 0].
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Find x . , right triangles
Answer: B. X = [tex]4\sqrt{6}[/tex]
Step-by-step explanation:
sec(45) = hyp/12
12sec(45) = hyp
hyp = 16.9
cot(60) = x/16.9
16.9cot(60) = x
x = 9.7
B. X = [tex]4\sqrt{6}[/tex]
The table shows populations for 4 countries, rounded to the nearest thousand. Which country's population decreased from 1985 to 2005?
A)Iceland
B)Portugal
C)Peru
D)Hungary
Answer:
D) Hungary
Step-by-step explanation:
You are being asked to compare 4 pairs of numbers. The population will have decreased if the number in the 2005 column is less than the number in the 1985 column.
ComparisonsWhenever you compare numbers, you start with the most-significant digit. If the most-significant digit has a higher place value, the number is larger. If the digits have the same place value, the number with the larger digit is larger. If no determination can be made by these comparisons, then the digits to the immediate right are compared.
27,... > 19,... 2 > 1 in the 10-millions place
10,... > 9,... 1 has a greater place value
29... > 24... comparison shifts to the 10-thousands place: 9 > 4
10,058,... < 10,649,... . . . . the population decreased (0 < 6)
QuestionThe "population decreased" result is found on the last line of the table, identified by the Country name "Hungary."
Hungary's population decreased from 1985 to 2005.
A roulette wheel has 37 numbers (0 through 36).
Use the Multiplication Principle of Probability to
calculate the probability of getting a 27 followed
by a 15. Write your answer as a fraction.
[tex]\large\boxed{\frac{1}{1369}}[/tex]
We'll assume that there is an equal probability of any position on the wheel, so a [tex]\frac{1}{37}[/tex] chance for any given number.
We must take the probability of getting a 27, then the probability of getting a 15, and multiply them together to find the chances that they both happen in a row.
[tex]\frac{1}{37}\cdot\frac{1}{37}=\boxed{\frac{1}{1369}}[/tex]
x =x=x, equals
^\circ
∘
Answer: [tex]55^{\circ}[/tex]
Step-by-step explanation:
Angles on a straight line add to [tex]180^{\circ}[/tex].
solve for m and n. Due tommorow
Angles around a point equal 360°, so n = 360 - 291 = 69°
Thus, as angles in a triangle add to 180°, m = 180 - 31 - 69 = 80°
show if √5×√5×√8 is rational or irrational numbers
Answer:
Irrational number
Step-by-step explanation:
Rational and irrational number:Prime factorize the number and then simplify.
[tex]\sf \sqrt{5}*\sqrt{5}*\sqrt{8}=\sqrt{5*5*8}[/tex]
[tex]\sf = \sqrt{5*5*2*2*2}\\\ = 5* 2* \sqrt{2}\\\\= 10\sqrt{2}[/tex]is an irrational number.
i need help ASAP I’ll mark Brainly
Answer:
D : (0 ≤t ≤6)
R : (-2 ≤d ≤0)
Step-by-step explanation:
your domain is your x and your range is your y.
this means that you start by looking at your x axis. in this problem, x goes from 0 to 6, so 0 ≤t ≤6
this is the same for y.
y goes from -2 to 0 (remember that you read the y axis down and up, so you need to have the negative number written first)
so -2 ≤d ≤0
Answer:
(domain: 0 ≤ t ≤ 6)
(range: -2 ≤ d ≤ 0)
Step-by-step explanation:
domain of a function: all possible x-values
range of a function: all possible y-values
here, we know that we can't have negative time (note: time is along the x-axis and is x-variable; it is describing the domain)
(and yes, while time still goes on forever, this graph does not have an arrow on the end of it, meaning that is where we are considering time to stop--and because its an ≤ sign, it wouldn't be infinity)
so, time goes from 0 to 6
(domain: 0 ≤ t ≤ 6)
here, we also know that our submarine won't go above the water level (it's not going to keep floating up into space forever), so the maximum value of our range (depth) is going to be 0
we also won't be going any lower than where the toy starts--which we can see to be -2
so, the depth goes from -2 to 0
(range: -2 ≤ d ≤ 0)
hope this helps!! have a lovely day :)
Triangle ABC has vertices at A(3,4), B (-2,0), C (5,0). Prove that the area of the triangle formed by the joining midpoints of triangle ABC is 1/4 the area of triangle ABC
We have been able to prove that the area of the triangle formed by the joining midpoints of triangle ABC is 1/4 the area of triangle ABC.
What is the area of the triangle with vertices?Area of triangle joining the points A, B & C is;
A₁ = ¹/₂[tex]\left[\begin{array}{ccc}1&1&1\\3&-2&5\\4&0&0\end{array}\right][/tex]
A₁ = ¹/₂(-1 * -20) + (1 * 8)
A₁ = 14
Thus;
Midpoint of AB is (¹/₂, 2)
Midpoint of BC is (³/₂, 0)
Midpoint of AC is (4, 2)
A₂ = [tex]\frac{1}{2} \left[\begin{array}{ccc}1&1&1\\\frac{1}{2} &\frac{3}{2} &4\\2&0&2\end{array}\right][/tex]
A₂ = ¹/₂(3 - 1(-7) + (1 * -3))
A₂ = ⁷/₂
Since A₁ = 14, we can equally say that;
A₂ = ¹/₄A₁
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Name the ray that is opposite . Type the proper name for the ray in the space provided. Type only uppercase letters and do not include symbols or spaces with your answer.
The ray that is opposite FH in the image given is: FE.
What is a Ray?A ray is a straight line that starts from one end and extends infinitely towards the opposite end.
We are asked to find the ray that is opposite to FH. This means the ray opposite to FH will definitely start from point B and extends to the opposite direction.
Ray FE is opposite FH.
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x =x=x, equals
^\circ
∘
degrees
Answer:
Actually this question is easy. Mutual angles are equal to each other. Then 152-90=62