Answer:
Density = 9 dolphins / mi^2 This is the result.
Step-by-step explanation:
Number of dolphins = 175
Radius = 2.5 mi
1. - Calculate the area
Area = pi* r^2
Area = 3.14*2.5^2
Area = 3.14*6.25
Area = 19.625 mi^2
2. - Calculate the density
density = dolphins/mi^2
- Substitution
density = 175 / 19.625
Result
density = 8.9 dolphins/mi^2
Rounding to the nearest whole number
Density = 9 dolphins / mi^2
Answer:
Area of half circle = 1/2 x π x r^2
= 1/2 x 3.14 x 2.5^2
= 9.8125 miles²
For the density divide the number of dolphins by the area:
Density =population/area= 175/9.8125 = 17.83 dolphins/mile²
the population density of the dolphins is 18dolphin/miles²
On circle O below, the measure of SV is 120°.
What is the measure of VU?
Answer: Angle VU is 44 degrees
Step-by-step explanation:
Algebra 2!! What is the domain of the function graphed below?
Answer:
(-infinity,+infinity)
Step-by-step explanation:
Domain refers to the x-axis. So if we look from left to right along the x-axis we could conclude that the function will go infinitley from negative infinite to positive infinity.
what's 100,994 rounded to the nearest 100?
Answer: 101000
Step-by-step explanation: It would be rounded to 101000 because the nearest 100 would be a 1000.
Answer: 111,000 because when you round 994 you get a thousand because that’s the next hundred so you get 111,000
Step-by-step explanation:
Evaluate the expression:
(-1/7)^0
Please show work
A) -1/7
B) 0
C) 1/7
D) -1
E) 1
F) None of These
Answer:
The answer is E) 1
Step-by-step explanation:
can you make me brainliest please
Andy is buying a car he negotaited a 7% descrease on £6500 car. he will pay the full balance in 12 equal monthly payments.
Answer:
he would pay 503.75 every month
Step-by-step explanation:
Find the quotient
6 1/2 divided by 3/4
Answer:
8 2/3
Step-by-step explanation:
First, we turn 6 1/2 into an improper fraction, which is 13/2. Now, we can write this out as: 13/2 divided by 3/4. When dividing fractions, you reverse the sign to multiplication and you flip the numerator and the denominator of the second number. So, in this case, it would be 13/2 TIMES 4/3 which now we can do! 13*4 is 52 and 2*3 is 6. 52/6 is a number we can simplify. We can divide out a 2, so 52/2 is 26 and 6/2 is 3. 26/3 can be put into a mixed number. 3 goes into 26, 8 times and there is a 2 left over. So our final answer is 6 2/3.
If f(a)=4a-5 what is f(3)-f(1.25)
a. -8
b. 7
c. 17
d. 32
c)17
Step-by-step explanation:
PLEASE HELP
What statement best describes the relation ship in the graph below
A. The relationship is a function because of all the y -values are positive
B. The relationship is not a function because the graph does not pass through the point (0,0)
C. The relationship is a function because each x -value has exactly one corresponding y -value
A sector of a circle has an area of 263.42cm and the area of the entire circle has an area of 563.24cm? What is the central angle of the
sector described?
Answer:
168
Step-by-step explanation:
168 is the ans is 100% correct
(hope this helps can i plz have brainlist :D hehe)
24 times *blank* =6
Someone please answer this I need help
Answer:
0.25
Step-by-step explanation:
0.25 x 24 = 6
If electricity comes from electrons, does morality come from morons?
Answer:
AHAHAHAHA
Step-by-step explanation:
nope LOL
Answer:
gftrtrtgfrtrftgtrgty
Step-by-step explanation:
fgrtfgtrfggtrfgtrfgtrfgtrfgytrfgtrfgtr
Help needed thanx!!!!
Answer:
all quadrilaterals have 4 sides
Pls mark as brainliest
Answer:
C
Step-by-step explanation:
Because all quadrilaterals have four sides. Like for example a square and a parallelogram both have 4 sides.
Serge was curious if a sample third quartile was an unbiased estimator of a population third quartile. He started with a large normally distributed population of test scores whose third quartile was Q3=80 points. He then took a random sample of 6 tests and calculated the third quartile of the sample. He replaced those tests and repeated this process for a total of 40 trials. His results are summarized in the dot plot below, where each dot represents the third quartile from a sample of 6 tests.
Answer:
Sample third quartile appears to be an unbiased estimator of the population third quartile.
Step-by-step explanation:
khan
PLEASE HELP WILL MARK BRAINLIEST!
Steve uses an app that shows him how many Kilometers he has run to prepare for a marathon. The app store said he ran 6.436 Kilometers. He wants to post online how many miles he ran. Steve ran_______miles.
PLEASE HELP ASAP!!
Solve for x.
x=4 and that it's the answer
Help i don't know what to do I will give brainiest
Answer:
Her starting average was 66
it decreased by 7
her final average was 71
Step-by-step explanation:
i think
Answer:
a. 78
b. decreased by 7 points
c. 83 points
Step-by-step explanation:
Calculate the slope of the line that passes through (2,5) and (12, 10). Reduce answer to lowest terms if necessary.
Answer:
1/2
Step-by-step explanation:
Slope equation:
y2 - y1
--------
x2 - x1
-----------------------------------------------------------------------------------------------------------------
10 - 5 5. 1
-------- = ---- = ------
12 - 2 10 2
Hope this helps!
Answer:1/2 Step-by-step explanation:
Solve y =-2x
y = 3x + 5
by using substitution method
Answer:
y = -2x
y = 3x + 5
<=> 3x + 5 = -2x
y = -2x
<=> 5x = -5
y = -2x
<=> x = -1
y = -2x
<=> x = -1
y = (-2)(-1) = 2
so (x; y) = (-1; 2)
Paige mows 1/4 acres in a 1/2 hour. How many acres does page mow per hour?
Answer:
2/3 acres per hour.
Which of the following number lines represents the inequality below?
Answer:
B
Step-by-step explanation:
The circle has to be hallow in order for it to be greater than or less than. The arrow is going below 4 because the circle is on 4 and the arrow is pointing to the left side.
Answer:
B
Step-by-step explanation:
it shows all the numbers less than four while the others show numbers greater than 4
WILL GIVE BRAINLIEST!
Find two consecutive even integers such that four times the first equals three times the second. (Enter your answers as a comma-separated list.)
Answer:
This is complicated
Step-by-step explanation:
UHM
what is y= -3x + 4 what does y equal
Como se puede influir de manera tractiva en otros niños menores de 14 años para tomar medidas bioseguridad en tiempos de pandemia
Step-by-step explanation:
La medida más importante es la difusión de información. Es necesario tener información sobre las prácticas de bioseguridad en tiempos de pandemia accesible a los jóvenes, ya sea en la escuela, en internet, en las redes sociales, a través de anuncios televisivos de celebridades con los que los jóvenes se identifican.
Es necesario que la pandemia sea vista como un problema de salud muy grave y que debe ser tomado en serio por todas las personas independientemente de su edad, los jóvenes deben comprender la gravedad del problema que enfrenta el mundo y adaptarse a este período que el Cuanto mayor sea la conservación, más rápido terminará.
7.
Find the slope of the line.
A. [tex]\frac{1}{4}[/tex]
B. –4
C. 4
D. [tex]-\frac{1}{4}[/tex]
Answer: The answer is either letter A or letter C
home / math / slope calculator
Slope Calculator
By definition, the slope or gradient of a line describes its steepness, incline, or grade.
Where
m — slope
θ — angle of incline
If the 2 Points are Known
Result
Slope (m) =
ΔY
ΔX
=
-1
5
= -0.2
θ =
arctan( ΔY ) + 360°
ΔX
= 348.69006752598°
ΔX = 5 – -5 = 10
ΔY = -3 – -1 = -2
Distance (d) = √ΔX2 + ΔY2 = √104 = 10.198039027186
Equation of the line:
y = -0.2x – 2
or
y =
- 1 x
5
– -2
When x=0, y = -2
When y=0, x = -10
...............................................................................................................................................
home / math / slope calculator
Slope Calculator
By definition, the slope or gradient of a line describes its steepness, incline, or grade.
Where
m — slope
θ — angle of incline
If the 2 Points are Known
Result
Slope (m) =
ΔY
ΔX
=
5
-1
= -5
θ =
arctan( ΔY ) + 180°
ΔX
= 101.30993247402°
ΔX = -3 – -1 = -2
ΔY = 5 – -5 = 10
Distance (d) = √ΔX2 + ΔY2 = √104 = 10.198039027186
Equation of the line:
y = -5x – 10
When x=0, y = -10
When y=0, x = -2
...............................................................................................................................................
Input Data :
Point A
(
x
A
,
y
A
)
= (3, 2)
Point B
(
x
B
,
y
B
)
= (7, 10)
Objective :
Find the slope of a line that passes through points A and B.
Formula :
Slope
m
=
y
B
−
y
A
x
B
−
x
A
Solution:
Slope
m
=
10
−
2
7
−
3
=
8
4
m = 2
...............................................................................................................................................
Input Data :
Point A
(
x
A
,
y
A
)
= (3, 2)
Point B
(
x
B
,
y
B
)
= (7, 10)
Objective :
Find the slope of a line that passes through points A and B.
Formula :
Slope
m
=
y
B
−
y
A
x
B
−
x
A
Solution:
Slope
m
=
10
−
2
7
−
3
=
8
4
m = 2
Step-by-step explanation: This is the picture, I graphed it
Center: (0, 0)
Angle: 0 rad
Opacity: 1
Width: 10
Height: 6.8
This is for my final grade before spring break please help me asap noww
Answer:
Bushes are $9.
Bonsai trees are $32.
Step-by-step explanation:
Bushes are b and bonsai trees are t.
15b + 8t = $391
9b + 5t = $241
15b + 8t = $391 × 3 and 9b + 5t = $241 × 5
= 45b + 24t = $1173 and 45b + 25t = $1205
(45b + 24t = $1173) - (45b + 25t = $1205)
t = 1205 - 1173
t = $32
Apply to 15b + 8t = $391.
15b + 32 × 8 = $391
15b = $391 = 32 × 8
15b = $391 - 256
15b = $135
x = ($135 ÷ 15) = $9
PLEASE HELP I NEED HELP ASAP PLEASE
Use the information given to write the equation for the quadratic function.
a. The x-intercepts are (-4, 0) and (3,0), and the parabola opens down.
b. The vertex is (-8, -2), and the parabola opens up.
Answer:
y = -x² - x/22 + 6/11
Step-by-step explanation:
Standard form, is y = ax² + bx + c
We need to use standard form (though we could use vertex form, but it is easier to do standard form)
Substitute the x and y values that they give into y = ax² + bx + c
Because the parabola passes through...
(-4, 0), then 0 = (-4)²a + (-4)b + c
(3, 0), then 0 = 9a + 3b + c
(-8, -2), then -2 = 64a - 8b + c
So, we get this system:
16a − 4b + c = 0
9a + 3b + c = 0
64a − 8b + c = −2
Because you are learning about parabolas, I am assuming that you can solve a system, but the answers are:
a = -x²/22
b = -x/22
c = 6/11
So, the equation of the parabola is:
y = -x²/22 - x/22 + 6/11
I hope this helps! Feel free to ask any questions!
A recipe uses 5 cups of milk to make 30 servings. If the same amount of milk is used for each serving, how many servings can be made from one quart?
Answer:
Three gallons will be enough to make 128 servings.
Step-by-step explanation:
In Three gallons there are 64 cups. if 5 cups makes 10 servings, that is 1/2 cup per serving. So 64 cups will make 128 servings.
Identifying When to Use a Sample
ch survey is a sample not necessary?
Slove the system
Of Linear Eqitions by
Elimination
3x-y=0
2x+y=-10
Answer:
(-2, -6)
Step-by-step explanation:
Given the simultaneous equation
3x-y=0 ... 1
2x+y=-10 ... 2
Add both equations to eliminate y
3x + 2x = 0 - 10
5x = -10
x = -10/5
x = -2
Substitute x = -2 into 1
3(-2)- y = 0
-6 - y = 0
-y = 0+ 6
-y = 6
y = -6
Hence the coordinate (x, y) is (-2, -6)
When the angle of elevation of the sun is 50 degrees, a flagpole casts a shadow that is 16.8 feet long. What is the height of the flagpole to the nearest foot?