Answer:
its 6............................
Help Please and thank you
Answer:
2x + 3 = -7 ---> x = -5
4.5x - 7 = 20 ---> x = 6
-3x + 7 = 28 ---> x = -7
Step-by-step explanation:
2x + 3 = -7
2x = -10
x = -5
4.5x - 7 = 20
4.5x = 27
x = 6
-3x + 7 = 28
-3x = 21
x = -7
Approximate square root of 12 to the nearest tenth.
Answer:3
Step-by-step explanation:
Help me with this please~
NO ONE IS HELPING ON THIS SITE, PLEASE HELP MEEEEE
A scientist records the motion of a dolphin as it jumps from the water. The function`h\left(t\right)=-8t^{2}+32t` models the dolphin’s height in feet above the water after t seconds. Show all work and explain your answers clearly. Use complete sentences.
What is the most reasonable domain for this situation? Explain your answer.
Answer:
I don't know the answer but try using 900gle lens and scanning it on homework setting
Answer:
Range is 0 ≤ h ≤ 32
Step-by-step explanation:
The height is a function of time and is described as h(t) = -8t² + 32t
h is the y-axis and t is the x axis, so we can write this as y = -8x² + 32 x.
This describes a parabola that opens downward, since the coefficient of the square term is negative. The maximum point for height will be at the vertex of the parabola.
y = ax² + bx + c
The x coordinate of the vertex is at -b/2a
a = -8, b = 32, c = 0
-b/2a = -32/-16 = 2
Maximum height is at x = 2 seconds (we can see this on the graph)
At 2 seconds, y = -8(2²) + 32(2) = -32 + 64 = 32
Again, we can see this on the graph.
The x intercepts are the points where y = 0
0 = -8x² + 32x = 8x(-x +4)
y will be 0 when x is 0 or 4 (confirmed by graph)
So, the height (y) = 0 at time (x) = 0 sec, 4 sec
0 ≤ y ≤ 32
y = h, so 0 ≤ h ≤ 32
I hope this helps.
Clear sel
5) Which expression is equivalent to 3.5 x 10^7 + 4 x 10^6?
7.5 x 10^7
O 3.9 x 10^6
O 3.9 x 1017
O 7.5 x 10^6
M
Answer:
3.9 x 10^6
Step-by-step explanation:
3.9 x 10^6
A 150 -inch pipe is cut into two pieces. One piece is two times the length of the other. Find the length of the shorter piece.
Answer:
im trying to get 50 points
Step-by-step explanation:
Answer:
The pipe lengths are 50 inches and 100 inches.
Step-by-step explanation:
If we refer to the length of the shorter piece as x, then we can say the length of the larger piece is 2x. We are also told that the pipe length is 150 inches, so we can say:
x + 2x = 150
3x = 150
x = 150/3
x = 50
So the pipe lengths are 50 and 100 inches respectively.
The shape of a water tower can partially be modeled by a sphere in which the diameter is 28 feet. A painter needs to calculate the surface area of this part of the water tower to accurately estimate the amount of paint needed for the job. What is the surface area of this portion of the water tower to the nearest square foot?
edit- nvm i got it but u can answer this if u want i guess
The surface area of the spherical water tower is 2462 ft²
How to find the surface area of a sphere?The surface area of the sphere is the portion he will paint.
Therefore,
surface area of a sphere = 4πr²
where
r = radiusTherefore,
diameter = 2r
r = diameter / 2
r = 28 / 2 = 14 feetsurface area of a sphere = 4 × π × 14²
surface area of a sphere = 4 × π × 196
surface area of a sphere = 784π
surface area of a sphere = 784 × 3.14
surface area of a sphere = 2461.76
surface area of a sphere = 2461.76 ft²
surface area of a sphere = 2462 ft²
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I’ll make you brainliest !
Answer:
20
Step-by-step explanation:
To evaluate, substitute x = 6 into f(x) , that is
f(6) = 2(6) + 8 = 12 + 8 = 20
[tex]f(x)=2x+8[/tex]
Substitute x = 6 in the equation.
[tex]f(6)=2(6)+8\\f(6)=12+8\\f(6)=20[/tex]
Therefore, the answer is f(6) = 20.
The last choice.
Also note that do not post exam/test question here.
How do I solve 5x - 2?
Please show your work too!
Answer:
0.4
Step-by-step explanation:
5x-2 =0
5x = 2
x=2/5
x=0.4
Please answer ASAP!!!
The height of a cylinder is 6 centimeters. The circumference of the base of the cylinder is 14 centimeters. Which measurement is closest to the volume of the cylinder in cubic centimeters.
The volume of the cylinder in cubic centimeters is 251.2 cm^3.
The volume of a cylinder is expressed as:
V = πr²h
V = base area * height
Given the following
Base area = 16π centimeters
Height = 5cm
Substitute into the formula to have:
V = 16(3.14) * 5
V = 251.2 cm^3
Hence the volume of the cylinder in cubic centimeters is 251.2 cm^3.
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which equation represents the graph?
Look at the line carefully. You can see that the line crosses the point (0,2). See it? The value of 2 in the point (0,2) is the y-intercept.
The given equations are all in the form
y = mx + b, where b is the y-intercept.
So, based on this data, we conclude that the line represents the equation y = (1/3)x + 2.
Choice C is the answer.
120+120 +125+95+x+(x+84)=720, what would the value of x be?
120+120+125+95+x+x+84 = 720
544+2x = 720
2x = 176
x = 176/2
x = 88
Answer:
X=88
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
30 % =30/50 =0.30
IT MEANS 30 %
Answer:
0.30 does mean 30%
Step-by-step explanation:
Help lots of point + brainliest plz
write in slope intercept and standard form
Answer: 4
Step-by-step explanation:
30a^3+36a^2b+25ab^2+30b^3
Answer:
(5a + 6b)(6[tex]a^{2}[/tex] + 5[tex]b^{2}[/tex])
Step-by-step explanation:
1. Factor out common terms in the first two terms, then in the last two terms
2. Factor out the common term 5a + 6b
evaluate m/2 for m=-8
Answer:
-4
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightStep-by-step explanation:
Step 1: Define
m/2
m = -8
Step 2: Evaluate
Substitute: -8/2Divide: -4Answer: -4
Step-by-step explanation: It's important to understand that m/2 means
the same thing as m ÷ 2.
In this case, we are given that m = -8.
So we have -8 ÷ 2 which is -4.
Remember that when you divide a negative number
by a positive number then the quotient is negative.
HELP ME WITH THIS PLEASE!! WILL MARK BRAINLIEST
The cost of 3 boxes of envelopes and 4 boxes of notebook paper is $13.25. Two boxes of
envelopes and 6 boxes of notebook paper cost $17. Find the cost of each. Show all work to receive full credit.
Answer:
hope this helps sorry if im wrong but i think it is right have a nice night
Step-by-step explanation:
E for Envelopes
N for Notebook Paper
3E + 4N = $13.25
2E + 6N = $17
N = $2.45
E = $1.15
Answer:
N = $2.45 and E = $!.25
Step-by-step explanation:
E for Envelopes
N for Notebook Paper
3E + 4N = $13.25
2E + 6N = $17
N = $2.45
E = $1.15
a company that makes hair care products had people try a new shampoo of the 300 people,45 had a mild allergic reaction. what percent of the people had a mild allergic reaction?
Answer:
.255
Step-by-step explanation:
Given the vectors a and b, with lengths 21 and 44 respectively, and cosine of the angle between them equal to StartFraction 7 Over 12 EndFraction, find the scalar projection of a onto b and a · b.
ab =
a · b =
Answer:
ab= 49/4
a•b =539
Step-by-step explanation:
Complete the inequality below to describe the
range of the graph shown.
Range:
<<5
Fill in the inequalities below to specify the graph's domain shown. Domain: __ is not greater than or equal to x, which is below 4.
Fill in the inequalities below to specify the graph's range shown.
Range: __ is not greater than or equal to y, which is below 5.
The domain and range is the graph's domain is its set of potential input values, and its range is its set of potential output values.
Following is the finished inequality reflecting the set of the domain and range;
First,
Domain: -4 is below x, which is below or equal to 4.
Second,
Range: -2 is below y, which is below or equal to 5
The attached graph shows that the point (-4, 5) has an open circle, which denotes that the point has no value.
The closed circle at the other end of the graph, at the coordinates (4, -2), denotes that the graph has a value at that location (4, -2)
First,
The domain of a graph is the set of potential inputs (x-values) for the graph, expressed as inequality is -4 < x ≤ 4
Therefore;
To complete the inequality for the domain, gives;
Domain: -4 is less than x which is less than or equal to 4
Second,
The range of a graph are the possible output (y-values) of the graph, in inequality notation, the domain of the attached graph is -2 ≤ y < 5
the domain supplies the necessary inequality to be complete;
Range: -2 is less than or equal to y which is less than 5.
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Find the measure of the missing angle
Answer:
79 degrees
Step-by-step explanation:
the 2 angles together make a 180 degree angle
For the AAS theorem to apply which side of the triangle must be known?
A. The included side
B. The longest slide
C. The shortest side
D. The non-included side
Answer:
option a is answer (the included side)
For the AAS theorem to apply which side of the triangle must be known option d. The non-included side.
What is AAS theorem?In the case when there is two angles and there is nonincluded side for one triangle that should be congruent to two angles and a nonincluded side of a second triangle, so the triangles should be considered as the congruent.
therefore, For the AAS theorem to apply which side of the triangle must be known option d. The non-included side.
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The price of a video game was reduced from 60$ to $45. By what percentage was the price of the video game reduced?
Answer:
the price was reduced by 25%
Step-by-step explanation:
60 - 45 = 15
15 is what percent of 60?
15/60 = .25 x 100 = 25%
also can notice that 15 is 1/4 of 60, so it is equal to 25%.
please help meeeeee.
Answer:
-.82
Step-by-step explanation:
To find the average rate of change over an interval, you use rise over run with the first point and the last point (in this case, the first point is (50, 35.8) and the last point is (60, 27.6)). This will give you an average rate of change of -.82.
In the context of this problem, -.82 is how much your expected remaining life span decreases each year.
5 Clear Which number line best represents the solution to the inequality 18x + 3 < 48?
Answer:
D
Step-by-step explanation:
you must solve first
18x < 45
x < 2.5
the number line will have an arrow with an open circle since it does not include 2.5. the line will head towards 0 and negatives since it's less than 2.5 so your answer is D
Find the solution set for the following absolute value equation:
[3x + 9] = 24
Answer:
x = -11 or 5
Step-by-step explanation:
[3(-11)+9]
[-33+9]
[-24]
24
[3(5)+9]
[15+9]
[24]
24
Help please
Hint ( wave length is speed decided by frequency )
Physics The wavelength of a radio wave is defined as speed divided by frequency.
An FM radio station has a frequency of 9 x 10^7 waves per second. The speed of
the waves is about 3 x 10^8 meters per second. What is the wavelength of the
station?
Answer:
3.333 m
Step-by-step explanation:
Divide speed by frequency
3 x 10^8 / 9 x 10^7
2. how is inquizitive graded? if you answer a question incorrectly on your first attempt, you will lose points.
The more questions you successfully answer on your first attempt, the more points you will receive. The more times you attempt a question, the more points you'll lose if you get it wrong.
Inquizitive is graded in following ways -
Reach a Target Score set by your instructor; Provide a Correct Answer; Respond to a minimum number of questions.The incorrect response is to simultaneously shove five large marshmallows in your mouth.In InQuizitive, points are earned by responding to questions.You use the Question confidence slider (to the right if using a computer or at the bottom for Smartphterm-2one users) to calculate how many points you can earn or lose on each question.In order to receive a mark for the exercise, you must respond to a certain number of questions.You must achieve a predetermined goal Score in order to receive a perfect score (100%) on the activity.To learn more about Inquizitive from given link
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