Answer:
Its -2.
Step-by-step explanation:
Answer:
A. -2
Step-by-step explanation:
3. Solve each inequality and graph the solution set.
– 3n-3> 12
x<-5
Step-by-step explanation:
-3x<12+3
3x>15 divide both sides with ÷3
x<-5
XE(-œ,-5)
I need help please
Y=-2x+4 complete the missing value in the solution to the equation
I will be choosing a brainliest
Answer:
x= -1/2y +2
Step-by-step explanation:
The product of two numbers is 240. The first number is 8 less than the second number. Write an equation can be used to find x
Answer:
The equation x = y-8
The equation (y-8) y = 240
The first number x = 12 and second number y =20
Step-by-step explanation:
Explanation:-
Step(l):-
Let 'x' be the first number and 'y' be the second number
Given the product of two numbers is 240
Given data x y = 240 …(l)
Given data the first number is 8 less than the second number.
x = y-8...(ll)
Substitute (ll) in equation (l) , we get
(y-8) y = 240
[tex]y^{2} -8y -240 =0[/tex]
[tex]y^{2} -20y+12y -240 =0[/tex]
[tex]y(y -20)+12(y -20) =0[/tex]
[tex](y +12)(y -20) =0[/tex]
y = -12 and y = 20
Y= -12 is not satisfied
we can choose y = 20
Step(ll):-
Given data x =y-8
substitute value y = 20 in x = y -8
x = 20-8 = 12
Final answer:-
The first number x = 12 and second number y =20
what is the answer to this?
Answer:
C
Step-by-step explanation:
Answer:
it's C because the answer looks like C
HELPPP ASAP PLEASEeeeeeeeeee
Answer:
c
100 cm squared = base; 10 cm = height
Step-by-step explanation:
1/3 of 100 is 33.33 repeating so that times ten is 333.1/3 yards.
hope this helps!
EMERGENCY!!! Please help me
Answer: 48
Step-by-step explanation: If each cube is 1/2 in length, then its volume is .25. If you divide 6/.25 it's 48
PLEASE HELPPP!!!!
Name at least one way that the ocean impacts each of Earth’s four major systems. How does the ocean keep west coast cities cool during the summer?
Answer:
The ocean influences weather and climate by storing solar radiation, distributing heat and moisture around the globe, and driving weather systems.
One way that the world’s ocean affects weather and climate is by playing an important role in keeping our planet warm. The majority of radiation from the sun is absorbed by the ocean, particularly in tropical waters around the equator, where the ocean acts like a massive, heat-retaining solar panel. Land areas also absorb some sunlight, and the atmosphere helps to retain heat that would otherwise quickly radiate into space after sunset.
The ocean doesn't just store solar radiation; it also helps to distribute heat around the globe. When water molecules are heated, they exchange freely with the air in a process called evaporation. Ocean water is constantly evaporating, increasing the temperature and humidity of the surrounding air to form rain and storms that are then carried by trade winds. In fact, almost all rain that falls on land starts off in the ocean. The tropics are particularly rainy because heat absorption, and thus ocean evaporation, is highest in this area.
Outside of Earth’s equatorial areas, weather patterns are driven largely by ocean currents. Currents are movements of ocean water in a continuous flow, created largely by surface winds but also partly by temperature and salinity gradients, Earth’s rotation, and tides. Major current systems typically flow clockwise in the northern hemisphere and counterclockwise in the southern hemisphere, in circular patterns that often trace the coastlines.
Ocean currents act much like a conveyor belt, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics. Thus, ocean currents regulate global climate, helping to counteract the uneven distribution of solar radiation reaching Earth’s surface. Without currents in the ocean, regional temperatures would be more extreme—super hot at the equator and frigid toward the poles—and much less of Earth’s land would be habitable.
HOPE THIS HELPS!!! Brainliest PLEASE :)
Saffron
The ocean impacts Earth's four major systems in several ways. Here are some examples:
How ocean impacts the earth?Geosphere: The ocean is closely connected to the geosphere, as it plays a significant role in shaping the Earth's surface. Waves and currents erode coastlines and move sediment around, while underwater volcanic activity can create new landmasses and alter ocean chemistry.
Atmosphere: The ocean is an important component of the Earth's climate system, with ocean currents and temperatures influencing weather patterns and regulating the Earth's temperature. The ocean also absorbs carbon dioxide from the atmosphere, which helps to mitigate the effects of climate change.
Biosphere: The ocean supports a vast array of life, from microscopic plankton to massive whales. Marine ecosystems are interconnected with terrestrial ecosystems, with many species relying on the ocean for food and habitat.
Hydrosphere: The ocean is the largest component of the Earth's hydrosphere, and plays a critical role in the water cycle. Ocean currents and evaporation drive the movement of water around the planet, while the ocean stores vast amounts of water that can be released into the atmosphere through evaporation.
As for how the ocean keeps west coast cities cool during the summer, this is due to a phenomenon called coastal upwelling. As warm air rises over the land, it creates a low-pressure zone that draws in cool, moist air from the ocean.
This cool air can then be pushed inland by the sea breeze, providing relief from the summer heat. Additionally, the cold water that is brought to the surface during upwelling helps to cool the air near the coast.
To know more about the ocean and earth follow
https://brainly.com/question/15087582
#SPJ3
3. In the diagram of circle 0, two tangents have been drawn from exterior point P to the circle at points A and B. (a) If mAB =105 , then determine the measure of ZP. Show your work.
Answer:
75
Step-by-step explanation:
Given:
mAB =105
The minor arc given mAB is 105. Subtract that from 360 to get the measure of the major arc mACB
<=> mACB = 360 - 105 = 255
As we know, the measure of an angle formed by two tangents intersesting outside the circle can be found by one haft of the difference between the mearsure of two intercepted arcs
=> the measure of ∠P is:
= (mACB - mAB)/ 2
= (255 - 105)/2
= 75
Will give brainliest
Please answer and Explain detailed
Answer:
27%
Step-by-step explanation:
50+61=111
111÷4=27
4 is the number of roles
Answer:
60%
Step-by-step explanation:
50 + 61 = 111 (amount of female 11th and 12th graders)
42 + 31 + 111 = 184 (amount of female at school)
111/184 = 60%
y=10x
Select the answer showing the ratio x:y
Answer:
a
Step-by-step explanation:
im not sure how to explain but hope this helps
What expression is equivalent to x^6-9
Answer:
x^6-9 = x^-3 = 1/x^2
Step-by-step explanation:
Hi! I'm happy to help!
To solve this, we need to simplify this expression as much as possible. We see that in the exponent, we have the expression 6-9, which we can substitute for -3.
[tex]x^{6-9}[/tex]
[tex]x^{-3}[/tex]
To further simplify, we need to find out what [tex]x^{-3}[/tex] is. Whenever using a negative exponent, follow this equation.
[tex]x^{-y}[/tex]=[tex]\frac{1}{x^{y} }[/tex]
Using this, we can turn [tex]x^{-3}[/tex], into [tex]\frac{1}{x^{3}}[/tex]. Since we do no know what x is, we cannot simplify any further.
To sum it up, [tex]\frac{1}{x^{3}}[/tex] is an equivalent expression for [tex]x^{6-9}[/tex].
I hope this was helpful, keep learning! :D
WILL GIVE BRAINLIST PLZ HELPPP SOMEONE!!!!
The table below shows the cost for a factory to produce mid-sized cars.
Based on the information in the table, how much does it cost the factory to produce each car?
Number of Cars Produced Cost
0 $0.00
3 $17,325.00
5 $28,875.00
6 $34,650.00
8 $46,200.00 ( THIS IS THE CHART)
A.
$17,325.00
B.
$5,775.00
C.
$2,888.00
D.
$5,875.00
Answer:
b is the correct answer
Step-by-step explanation:
Answer:
Step-by-step explanation:
the correct answer is B
1 point
Question #3: A shoe store is running a sale for buy one get one 20% off. If
the shoes were $19.99 each, how much will you pay in total if you buy two
pairs? *
Your answer
Final answer:
To calculate the total cost of two pairs of shoes priced at $19.99 each with a buy one get one 20% off deal, first find the discount amount for the second pair, then add this discounted price to the full price of the first pair, resulting in a total of $35.98.
Explanation:
The question asks how much you will pay in total if you buy two pairs of shoes priced at $19.99 each, with a sale of buy one get one 20% off.
First, calculate the discount on the second pair. 20% of $19.99 is $3.998, which rounds to $4.00 when applying standard mathematical rounding.
Therefore, the second pair of shoes would cost $19.99 - $4.00 = $15.99. Now, add the price of the first pair of shoes to the discounted price of the second pair to get the total: $19.99 + $15.99 = $35.98.
The depth of a river at a certain point is modeled by the function W defined above, where W(t) is measured in feet and time T is measured in hours
Answer:
(a) The meaning of W'(8) is the rate of change of the depth of the water at time t = 8 hours is -0.8 ft/hr
(b) The tangent line equation is Y = 0.79×t +6.143
Therefore, W(3.5) ≤ 9 as 0.79×3.5 +6.143 = 8.908 < 9
(c) [tex]\lim_{t \to 2 }\frac{W(t) - t^3 + \frac{1}{4} }{t -2}[/tex] is [tex]\frac{\sqrt{3} \pi -96 }{8}[/tex]
Step-by-step explanation:
Here we have
[tex]W(t) = \begin{cases}\frac{17}{2}-\frac{3}{2}\cos \left (\frac{\pi t}{6} \right ) & \text{ if } 0\leq t\leq 6 \\ 10-\frac{1}{5}\left (t-6 \right )^{2} & \text{ if } 6< t\leq 10 \end{cases}[/tex]
(a) To find W'(8) we have
W(8) = [tex]10-\frac{1}{5}\left (8-6 \right )^{2}[/tex]
Therefore, W'(8) given by the following relation;
[tex]W'(t) = \frac{\mathrm{d} \left (10-\frac{1}{5}\left (t-6 \right )^{2} \right )}{\mathrm{d} t} = - \frac{2t-12}{5}[/tex]
∴[tex]W'(8) =- \frac{2\times 8-12}{5} = -0.8 \ ft/hr[/tex]
The meaning of W'(8) is the rate of change of the depth of the water at time t = 8 hours = -0.8 ft/hr
b) Here we have the line tangent is given by the slope of the graph at the point t = 3, therefore we have
W'(t), t = 3 = [tex]\frac{\pi \sin(\frac{\pi t}{6} )}{4}[/tex]
The tangent line equation is Y = 0.79×t +6.143
Therefore, W(3.5) ≤ 9 as 0.79×3.5 +6.143 = 8.908 < 9
c) [tex]\lim_{t \to 2 }\frac{W(t) - t^3 + \frac{1}{4} }{t -2}[/tex] where W(t) = [tex]\frac{17}{2}-\frac{3}{2}\cos \left (\frac{\pi t}{6} \right )[/tex]
[tex]\lim_{t \to 2 }\frac{W(t) - t^3 + \frac{1}{4} }{t -2}[/tex] = [tex]\frac{\sqrt{3} \pi -96 }{8}[/tex].
A band sold out a concert with 4,200 seats. A random sample of 120 ticket buyers is surveyed, and 28 buyers made their purchase on the first day tickets were being sold. How many of the 4,200 tickets are likely to have been purchased on the first day?
Answer: 980 tickets
Step-by-step explanation:
A band sold out a concert that has 4,200 seats. A random sample of 120 ticket buyers was surveyed, and 28 buyers were found to have made their purchase on the first day the tickets were being sold. This means (28/120) = 7/30 of the 120 ticket were purchased on the first day.
To get the number of first day tickets purchased when 4,200 tickets are likely to have been purchased will be the fraction gotten multiplied by 4200. This will be:
= 7/30 × 4200
= 29400/30
= 980 tickets
please help with this question
Answer:
x = -8/2
Step-by-step explanation:
To make the equation easier to work with, our first step will be to make all of our fractions have a common denominator. Both 2 and 4 are factors of 8, so that will be our common denominator.
Old Equation: 1/4x - 1/8 = 7/8 + 1/2x
New Equation (with common denominators): 2/8x - 1/8 = 7/8 + 4/8x
Now, we're going to begin to isolate the x variable. First, we're going to subtract 2/8x from both sides, eliminating the first variable term on one side completely.
2/8x - 1/8 = 7/8 + 4/8x
-2/8x -2/8x
__________________
-1/8 = 7/8 + 2/8x
We're one step closer to our x variable being isolated. Next, we're going to move the constants to the left side of the equation. To do this, we must subtract by 7/8 on both sides.
-1/8 = 7/8 + 2/8x
- 7/8 -7/8
______________
-1 = 2/8x
Our last step is to multiply 2/8x by its reciprocal in order to get the x coefficient to be 1. This means multiply both sides by 8/2.
(8/2) -1 = 2/8x (8/2)
The 2/8 and 8/2 cancel out, and you're left with:
-8/2 = x
I hope this helps!
At the beginning of an environmental study, a forest covered an area of 1500 km2 . Since then, this area has decreased by 9.8% each year.Let t be the number of years since the start of the study. Let y be the area that the forest covers in km2.
Write an exponential function showing the relationship between y and t.
Answer:
[tex]A(t)=(0.902)^t \cdot 1500[/tex] [tex][km^2][/tex]
Step-by-step explanation:
In this problem, the initial area of the forest at time t = 0 is
[tex]A_0 = 1500 km^2[/tex]
After every year, the area of the forest decreases by 9.8%: this means that the area of the forest every year is (100%-9.8%=90.2%) of the area of the previous year.
So for instance, after 1 year, the area is
[tex]A_1 = A_0 \cdot \frac{90.2}{100}=0.902 A_0[/tex]
After 2 years,
[tex]A_2=0.902 A_1 = 0.902(0.902A_0)=(0.902)^2 A_0[/tex]
And so on. So, after t years, the area of the forest will be
[tex]A(t)=(0.902)^t A_0[/tex]
And by substituting the value of A0, we can find an explicit expression:
[tex]A(t)=(0.902)^t \cdot 1500[/tex] [tex][km^2][/tex]
Which is bigger? 3kg or 40000mg
Answer:
3kg
Step-by-step explanation
kg is heavier
Examine the diagram. It is not drawn to scale.
What is the m3?
M3 =
Answer:
105°
Step-by-step explanation:
I did the test
Answer:
the answer is 105
Step-by-step explanation:
hope it helps you out a lot :)
A kindle costs $129.50 to make but Amazon sells it for $207.20 in order to make a profit. What is the percent that Amazon marked up this item?
Answer:
0.625
Step-by-step explanation:
turn it into a percentage
This is an example of a percent change question. The formula to solve this type of question is (new price - old cost / new cost). Solve the formula with the given values. 207.20-129.50/129.50 → 77.70/129.50 → 0.6. Turn the decimal into a percentage by multiply 0.6 * 100%. This gives us 60%. So, Amazon marked up this item by 60%.
~Good Luck!
Students are playing a game. In the game, students collect and trade building materials. Materials of equal value used for trading are shown in the table.
Materials of Equal Value for Trading
1 stone = 4 logs
1 brick =10 logs
2 logs = 150 nails
Part A
How many stones are needed to trade for 10 bricks?
Answer:
25 stones will be needed to trade for 10 bricks
Answer:
25 stones see needed
Step-by-step explanation:
Since 1 brick=10 logs
10 bricks= 100 logs
Since1 stone=4 logs
X=100 logs
X=100/4
X=25 stones.
7-11 mini-mart started a promotion where you can buy a refillable 40 oz. Soda for a one-time price $6.00, then fill the cup for $0.79 per year for a year or you can buy their filled disposable 32 oz. Soda cup for $1.69. How many sodas do you need to buy to make it work buying the refillable cup?
Answer:
7 cups of soda
Step-by-step explanation:
If we call the number of cups you buy by "x", we have that the price for the refillable cup P1 is:
P1 = 6 + 0.79*x
And the price for the other option is:
P2 = 1.69*x
To find how many sodas do you need to buy to make it work buying the refillable cup, you just need to equate the two prices and find the value of x:
P1 = P2
6 + 0.79*x = 1.69*x
0.9*x = 6
x = 6/0.9 = 6.6667 cups
So, you need to buy at least 7 cups of soda to make the refillable cup worth it.
When a force of 30 N acts on a certain object the acceleration of the object is 5m/s2 if the force is changed to 54 N what will be the acceleration of the object
Answer:
The correct answer is 9 m per [tex]second^{2}[/tex]
Step-by-step explanation:
Force is defined by mass of an object times it's acceleration.
Let the mass of the object be m kilograms.
When a force of 30 N acts on a certain object the acceleration of the object is 5 m per [tex]second^{2}[/tex]
∴ 30 = m × 5
⇒ m = 6.
If the force is changed to 54 N, let the acceleration of the object be x m per [tex]second^{2}[/tex].
∴ 54 = m × x
⇒ x = [tex]\frac{54}{6}[/tex] = 9
Thus when the force is 54 N, the acceleration of the object is 9 m per [tex]second^{2}[/tex].
A type of cracker, rectangular in shape, is stored in a vertical column with all of the crackers stacked directly on top of each other. Each cracker measures 2 inches in length by One and one-half inches in width. The volume of the column is 15 inches cubed. If there are 40 crackers in the column, what is the height of each individual cracker?
Answer: 1/8 inch
Step-by-step explanation: just got it
Answer:
1/8 inches
Step-by-step explanation:
he physical plant at the main campus of a large state university recieves daily requests to replace florecent lightbulbs. The distribution of the number of daily requests is bell-shaped and has a mean of 40 and a standard deviation of 7. Using the 68-95-99.7 (Empirical) Rule, what is the approximate percentage of lightbulb replacement requests numbering between 40 and 47
the approximate percentage of light bulb replacement requests numbering between 40 and 47 is 34% .
Step-by-step explanation:
Step 1: Sketch the curve.
The probability that 40<X<47 is equal to the blue area under the curve.
Step 2:
Since μ=40 and σ=7 we have:
P ( 40<X<47 ) = P ( 40−40 < X−μ < 47−40 )=P ( 40−40/7< X−μ/σ < 47−40/7)
Since Z = x−μ/σ , 40−40/7 = 0 and 47−40/7 = 1 we have:
P ( 40<X<47 )=P ( 0<Z<1 )
Step 3: Use the standard normal table to conclude that:
P ( 0<Z<1 )=0.3413
Percentage = 0.3413(100)=34.13%
Therefore , the approximate percentage of light bulb replacement requests numbering between 40 and 47 is 34% .
Question 1: The water level in a tank can be modeled by the function h(t)=4cos(+)+10, where t is the number of hours
since the water level is at its maximum height, h. How many hours pass between two consecutive times when
the water in the tank is at its maximum height?
Your answer...
Question 2: Point B has coordinates (3, -4) and lies on the circle whose equation is x + y = 25. If an angle is drawn in
standard position with its terminal ray extending through point B, what is the sine of the angle?
Your answer...
Answer:
Question 1: The hours that will pass between two consecutive times, when the water is at its maximum height is π hours
Question 2: Sin of the angle is -0.8
Step-by-step explanation:
Question 1: Here we have h(t) = 4·cos(t) + 10
The maximum water level can be found by differentiating h(t) and equating the result to zero as follows;
[tex]\frac{\mathrm{d} h(t)}{\mathrm{d} t} = \frac{\mathrm{d} \left (4cos(t) + 10 \right )}{\mathrm{d} t} = 0[/tex]
[tex]\frac{\mathrm{d} h(t)}{\mathrm{d} t} = - 4 \times sin(t) = 0[/tex]
∴ sin(t) = 0
t = 0, π, 2π
Therefore, the hours that will pass between two consecutive times, when the water is at its maximum height = π hours.
Question 2:
B = (3, -4)
Equation of circle = x² + y² = 25
Here we have
Distance moved along x coordinate = 3
Distance moved along y coordinate = -4
Therefore, we have;
[tex]Tan \theta = \frac{Distance \ moved \ along \ y \ coordinate}{Distance \ moved \ along \ x \ coordinate} = \frac{-4}{3}[/tex]
[tex]\therefore \theta = Tan^{-1}(\frac{-4}{3}) = -53.13^{\circ}[/tex]
Sinθ = sin(-53.13) = -0.799≈ -0.8.
PLEASE HURRY my question is in the picture
Answer:
36p³-46p-24
Step-by-step explanation:
Its the second one
All we need to do is distribute
to do this, we need to multiple 6p by everything in the parenthesis
and then multiply -8 by everything in the parenthesis
If we do this, we get
36p³ + 48p² + 18p - 48p² - 64p - 24
Now we combine like terms for our final answer
the 48p² and -48p² cancel out
The FINAL answer is ...
The second option: 36p³ - 46p - 24
I need help asap;):)
Answer:
Newton discovered that sunlight has many colors when it passes through a prism.
A rectangular box is going to be made with a volume of 274 cm3. The base of the box will be a square and the top will be open. The cost of the material for the base is 0.3 cents per square centimeter, and the cost of the material for the sides is 0.1 cents per square centimeter. Determine the dimensions of the box that will minimize the cost of manufacturing it. What is the minimum cost?
Answer:
The dimensions of the box are 5.67 cm by 5.67 cm by 8.51 cm.
The total minimum cost = 28.97 cents.
Step-by-step explanation:
Let the base dimensions are a cm by a cm and the height is h cm.
So, a²h = 274 ............. (1)
And, total cost, C = 0.3a² + 0.1 × 4ah = 0.3a² + 0.4ah
C = 0.3a² + 0.4 × (274/a) ................. (2)
Now, for minimum total cost, the condition is [tex]\frac{dC}{da} = 0 = 0.6a - \frac{0.4 \times 274}{a^{2} }[/tex]
⇒ [tex]a^{3} = \frac{0.4 \times 274}{0.6} = 182.67[/tex]
⇒ a = 5.67 cm
So, [tex]h = \frac{274}{a^{2}} = 8.51[/tex] cm.
Therefore, the dimensions of the box are 5.67 cm by 5.67 cm by 8.51 cm.
And the total minimum cost = [tex]C_{min} = 0.3 (5.67)^{2} + 0.4 \times \frac{274}{5.67} = 28.97[/tex] cents. (Answer)
Answer:
0.29
Step-by-step explanation: