Does this graph represent a function? Why or why not?
Answer:
B yes
Step-by-step explanation:
As long as a verticle line intercepts the graph at no more than one point it is a function
Answer:
B. Yes, because it passes the vertical line test
Step-by-step explanation:
no x values are repeated
PLEASE HELP! Joe was holding a kite with his hand 5' off the ground. The kite string is 125' long and has an angle of elevation of 56 degrees. How high off the ground is the kite?
Answer: 108.629 inches off the ground. (Round to any decimal place!)
Hi there! This is very similar to a question that I had yesterday, so I will do my best to try to answer it! I’m only in middle school, so this may not be correct :)
Step-by-step explanation:
First set up a diagram. The length of the string is the hypotenuse, and the angle of elevation is as pictured below. Use SOH CAH TOA to find the correct ratio, and then solve for “x”. Once you solve for “x” (height) add the 5 inches to the total, and your answer will be there! :)
How much should be added to 58.4 to makes 400?
Answer:
341.6
Step-by-step explanation:
400-58.4=341.6
Christian has six grades from test and IXL. They are all weighted equally. If Christian's grades are 100,96,96,88,70, and 100, what is thhe current average grade? (Round to the nearest whole number)
Answer:
100+96+96+88+70+100=550
550 divided by 6 is 91 1/3
92 is his current grade
For 4 weeks, William volunteered as a helper for swimming classes. The first week, he volunteered for 8 hours. He volunteered for 12 hours in the second week, and another 12 hours in the third week. The fourth week, he volunteered for 9 hours. For how many hours did he volunteer per week, on average?
PLEASE HELP ME!!! I WILL GIVE BRAINLIEST
Answer: x = 5 p = 288
Step-by-step explanation:
6x-8 = 22
6x = 30
x = 5
75 =p/4 + 3
p/4 = 72
p = 288
Answer:
the first one will be
x=5
A=(a+b)h
Work out the value of h when A = 38.64, a = 5.5 and b = 3.7.
Answer:
h = 8.4
Step-by-step explanation:
38.64 = [tex]\frac{(5.5+3.7)h}{2}[/tex]
38.64(2) = 9.2h
77.28 = 9.2h
h = 77.28/9.2
h = 8.4
Hello there, could you please help me? Thank you
Answer:
24
Step-by-step explanation:
Segment AC is 1/2 of segment AB so 12+12=24
Hope this helps
A cell phone company dropped the price by 7%. Which expression shows the new price of the phones(p)? A 0.07p B p-1.07 C p-0.07 D p-0.07p E 0.93p
Answer:
option D
Step-by-step explanation:
Let the price be p
7% of price = 0.07p
Price after decrease = p - 0.07p
Solve using suitable property and name the property applied. 3/5 x 35/24 + 15/6 x 3/5
What is the solution to the linear equation?
2.8y + 6 + 0.2y = 5y – 14
Answer:
2y +3x
Step-by-step explanation:
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Let r(x)=x^2.If r(x)=4,find x
A.2
B.-2
C.4
D.Both 2 and -2 are correct
E.None of these choices are correct
Can someone help me with this question please
Find the indicated side of the right triangle, please help!
Answer:
x = [tex]7\sqrt{3}[/tex]
Step-by-step explanation:
By applying tangent rule in the given triangle,
tan(60°) = [tex]\frac{\text{Opposite side}}{\text{Adjacent side}}[/tex]
[tex]\sqrt{3}=\frac{x}{7}[/tex]
x = [tex]7\sqrt{3}[/tex]
Therefore, answer will be,
x = [tex]7\sqrt{3}[/tex]
plz i REALLY need help. explain ur answer
Answer:
#16f(x) = 3(x² + 2),the y -intercept is:
f(0) = 3(0 + 2) = 6The y-intercept of h(x) is
-6 (from table)Correct choice is M
#17
Number of students who will not eat food served at school is 47,
total number of students is 410
Required probability is:
P = 47/410*100% = 11.46%When laid flat, a round parachute has a radius of 6 meters. What is the parachute's diameter?
Answer:
12 meters
Step-by-step explanation:
The diameter is twice the radius
d = 2r
d = 2(6)
d = 12 meters
Answer:
the diameter is 12
Step-by-step explanation:
radius is half of the diameter
Which statement is true? A.|-2.5|>|-3|
B: |-2.5|<|-3| C: |-2.5|=|-3|
Answer:
b.
Step-by-step explanation:
|-2.5|<|-3|
l -2.5 l = 2.5
l -3 l = 3
2.5 < 3
A town of 8660 people is expected to grow by 5% next year. What is the (total) expected population of the town next year?
Answer:
9093
Step-by-step explanation:
5÷100×8660=433
8660+433=9093
Hope this helps
Using percentage, the expected population of the town next year is 9093 people.
What is percentage?Percentage is defined as a given part or amount in every hundred.
Current population = 8660 people
Expected population next year = [tex]8660 + \frac{5}{100}*8660 = 8660 + 433 = 9093[/tex] people.
Learn more about percentage here
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Determine the interest paid on an investment of $2700 for 3years at a rate of 7.5% per annum compound interest
Step-by-step explanation:
hope you have understood.
Pls help quicky! I will also give a brainliest!!!!!
Answer:
A) 7.12
Step-by-step explanation:
Simply, subtract 10.52 by 3.4 to get your answer or plug in each answer until you get 10.52
Hope this helps, good luck! :)
MAX POINTS AND BRAINLIEST
Use the table below to write an equation in slope intercept form. How did you find the slope and the y intercept of the equation?
Answer:
y = 8x+9
Step-by-step explanation:
First find the slope
m = (y2-y1)/(x2-x1)
= ( 57-17)/(6-1)
= 40/5
= 8
The slope intercept form is y = mx+b where m is the slope and b is the y intercept
y = 8x+b
Substitute a point into the equation
33 = 8*3 +b
33 = 24+b
Subtract 24 from each side
33-24 = 24+b-b
9 = b
y = 8x+9
#equation
(1,7)(3,33)Slope
m=33-17/3-1m=16/2m=8.Now
y-y_1=m(x-x_1)y-17=8(x-1)y-17=8x-8y=8x+9On comparing to slope intercept form
y intercept is 9
Evaluate yx^y - xy^x for x = 1/2 and y=4.
A: -3/4
B: -1/2
C: 1/4
D: 3/4
Answer:
b
Step-by-step explanation:
Can I get help ?!:) pleasee
Answer:
9, not 54
Step-by-step explanation:
2/3 an also be 6/9 and 1/9
Answer:
18
Step-by-step explanation:
The LCM of 6 and 9 is 18
Then the least common denominator is 18
Help pleaseeeeeeeeeeeeeeeeeeeeee
Answer:
The answer is -20.
Step-by-step explanation:
To evaluate the expression, plug x= -3 and y= -5 into the expression. By plugging in the information given from the problem, the expression will look like 4(-3) + 3(-5) + 7.
Next, solve the expression, and the answer will be -20.
Connor gathered data about the height of customers entering a store and the time that it took them to gather their items and enter the checkout line.
Connor's data:
Based on the data provided by Connor, the correlation coefficient of the relationship is -0.84.
What is the correlation coefficient?
Correlation is used to determine the type of relationship that exists between two variables.
A negative correlation is when the two variables move in opposite directions. If one variable increases, the other variable decreases. A negative correlation has a negative sign in front of it.
The correlation coeffcieenct can be determined using a financial calculator.
To learn more about negative correlation, please check: https://brainly.com/question/27246345
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Solve for y.
-24 = -8y
Simply your answer as much as possible.
Answer:
Y=3
Step-by-step explanation:
-8 times 3 equals -24
Answer:
y = -3
Step-by-step explanation:
-24 = 8y
Divide both side by 8
-24/8 = 8y/8
-24/8 = y
divide -24 by 8 to get -3
-3 = y
rewrite ..( optional )
y = -3
Help I’ll mark as brainliest!!
Answer:
8
Step-by-step explanation:
Your welcome! :)
Good Luck!
What is the slope of the linear function of (6 , 2) (9 , 8)
Answer:
1/2
Step-by-step explanation:
The formula for slope is [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
9-6=3
8-2=6
3/6=1/2
The axis of symmetry for a function in the form f(x) = x2 + 4x − 5 is x = −2. What are the coordinates of the vertex of the graph?
(−9, −2)
(−17, −2)
(−2, −17)
(−2, −9)
Answer:
D) [tex](-2,-9)[/tex]
Step-by-step explanation:
Vertex Form of a Vertical Parabola:
[tex]y=a(x-h)^2+k[/tex]
Vertex -> [tex](h,k)[/tex]
Axis of Symmetry -> [tex]x=h[/tex]
Vertical Scale Factor -> [tex]a[/tex]
To turn [tex]f(x)=x^2+4x-5[/tex] into vertex form, we need to complete the square on the right sideTherefore, if [tex]f(x)=0[/tex], then [tex]0+9=x^2+4x-5+9[/tex] completes the square on the right side This becomes [tex]9=(x+2)^2[/tex]This means that our function in vertex form is [tex]f(x)=(x+2)^2-9[/tex]Therefore, the vertex of the graph is [tex](h,k)=(-2,-9)[/tex].
The coordinates of the vertex of the graph is (-2, -9).
What are Quadratic Functions?Quadratic functions are polynomial functions consisting of variables and exponents and the degree of the variable is 2.
The general form of a quadratic function is f(x) = ax² + b x + c.
Given is a quadratic function,
x² + 4x - 5
Given that axis of symmetry of the function is x = -2.
So the x coordinate of the vertex = -2.
y coordinates = f(-2) = 4 - 8 - 5 = -9
Hence the vertex is (-2, -9).
Learn more about Vertex form here :
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Peter wants to measure the height of a tree. He walks exactly 100 feet from the base of the tree and looks up. The angle of elevation to the top of the tree is 23 degrees. About how toll is the tree
feet tall
The tree is about _____ feet tall
Step-by-step explanation:
everything can be found in the picture
