Answer:
y=-38
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
y+45=7
Step 2: Subtract 45 from both sides.
y+45−45=7−45
y=−38
A person who is 6 feet tall is standing 120 feet from the base of a tree, and the tree casts a 130 foot shadow. The person's shadow is 10 feet in length. What is the height of the tree?
Answer:
the tree is 65 feet high.
Step-by-step explanation:
let 'x' be the height of the tree
draw the tree, the person and the shadows - notice the similar triangles
the following proportion counts
x : 5 = 130 : 10
x = (5*130)/10
x = 65 feet
please with full explanation please it's urgent
Answer:
u have some very good handwriting
There is a 10% chance of rain tomorrow. A spinner with 10 sections is spun to simulate the probability of rain. If the results are 3, 6, 1, 8, and 3, then what is the difference in the experimental probability from the simulation and the prediction?
Answer:
On the simulation prediction you got a 10% chance
While in the experimental one the average is 42%
Heng tried to define a reflection across line r.
Any point M not on the line of reflection maps to a point M' such that the midpoint L of M→M' is on line r.
Which counterexample shows that Heng's definition does not fully define a reflection?
The counterexample shows that Heng's definition does not fully define a reflection is Heny fully defined a reflection. Option D
How to determine the counterexampleConsider the counterexample in which point M is above line r and the line itself is a vertical line.
Assume M is located at (0, 2) and that line r is the x = 1 line. Heng's definition states that point M', which has a midpoint L that is on line r, should reflect point M across line r.
However, point M' at (-1, 2) would be the reflection of point M across line r, which does not meet the requirement that the midpoint L lies on line r. Therefore, in this counterexample, Heng's definition does not adequately characterize a reflection.
Learn more about reflection at: https://brainly.com/question/1908648
#SPJ1
which statements are true about rectangle ABCD?
Answer:
the answer will be B and D
Step-by-step explanation:
Please Answer
6. Find mABC
7. If mPQ =(5x +17)° , find x.
8. Find m∠1
Answer:
The answer is
252
25.4
125
Can somebody give the answer pls
Answer: OOO I KNOW THE FOURTH ONE
Step-by-step explanation: y^2 + z^2 = x^2
Answer:
D
Step-by-step explanation:
According to the Pythagorean's theorem, in a right triangle, the sum of the adjacent side squared and opposite side squared is equal to the hypotenuse squared in other words
[tex]y^{2} + z^{2} = x^{2}[/tex]
Helpppppppppppppppppp is this right
Answer:
The first one is B and the second one is correct
Step-by-step explanation:
Answer:
I think 1 is actually B and 2 is right -Your friend, Bill Cipher
Step-by-step explanation:
What is the slope (15, 8), (-17, 9)
Answer:
m = -1/32
Step-by-step explanation:
Simplify the expression 4 to the 3 power and 4 to the negative 6 power fractions
Answer:
Step-by-step explanation:
4³/4⁻⁶ = 4³⋅4⁶ = 4³⁺⁶ = 4⁹
can someone please help,, its 8th grade math
Solve the following equation for x: (2/3)x = 10 *
x = 8
x = 5
x = 15
x = 30
Answer:
the answer is x=15
I am sure
Answer:
x = 15
Step-by-step explanation:
(2/3)x = 10
(2/3x) * 3 = 10 * 3
2x ÷ 2 = 30 ÷ 2
x = 15
Find an expression which represents the difference when (6x-3y) is subtracted from (9x+2y) in simplest terms.
Answer:
[tex]3x+5y[/tex]
Step-by-step explanation:
Subtract (6x-3y) from (9x+2y):
[tex](9x+2y)-(6x-3y)[/tex]
This can also be seen as:
[tex](9x+2y)-1(6x-3y)[/tex]
Distribute the -1 to (6x-3y):
[tex](9x+2y)-1(6x)-1(-3y)\\\\(9x+2y)-6x+3y[/tex]
Simplify the parentheses:
[tex]9x+2y-6x+3y[/tex]
Group like terms:
[tex](9x-6x)+(2y+3y)[/tex]
Combine:
[tex]3x+5y[/tex]
This expression can't be further simplified. Therefore, 3x+5y is the answer.
:Done
PLZ HELP
For each value of u , determine whether it is a solution to 8u+6>-10.
2: yes or no
-7: yes or no
-2: yes or no
5: yes or no
Sam is studying a geometric drawing. He observes that ZPQR and ZAQB
are obtuse vertical angles and that ZQPR and ZQAB are congruent. He
proves that PQ = AQ. Which postulate uses Sam's information to prove
that APQR - AAQB?
Answer:
it would be ASA
Step-by-step explanation:
∡QAB ≅ ∡QPR
side AQ ≅ side AP
∡QAB ≅ ∡QPR
TELL HOW TO DO IT AND PLS DONT STEAL POINTS
Answer:
The last one is a function.
Step-by-step explanation:
When the x value corresponds to different y values e.g. (1,2)(1,1), then it automatically isn't a function. Another simple way to find out if something is a function is to graph and try the vertical line test. If the line passes through multiple points on it's way down, then it's not a function.
Hope that helps!!!! :)
Ethan and Bob are having a skateboard race. Ethan began at the starting line
and rode at a constant rate of two feet per second. Bob had a fourteen-foot
head start and rode three feet every five seconds.
What's is the linear equation
Answer:
aa
Step-by-step explanation:
aa
PLEASE HELP ME ANSWER THIS QUESTION!!!!!!!!!!!!!!
Answer:
A
Step-by-step explanation:
Oliver makes blueberry jam every year. The number of pints of jam he makes this year can be represented by the expression 4p - 9
Oliver made 8 pints of jam last year. How many pints does he make this year?
Answer:
23 pints
Step-by-step explanation:
Plug in 8 pints for p and solve
4*8-9
32-9
23 pints this year.
Answer:
23
Step-by-step explanation:
8 pomegranates cost $20.24.
How many full pomegranates can you buy for $50?
plz help
Answer:
19.76
Step-by-step explanation:
8/20.24=x/50
cross product
20.24*x=8*50
20.24x=400
x=400/20.24
x=19.76
Point D is the centroid of Triangle ABC. Find CD and CE.
DE = 9
Given:
Point D is the centroid of Triangle ABC and DE = 9.
To find:
The measures of CD and CE.
Solution:
We know that, centroid is the intersection of medians and it divides each median in 2:1.
In triangle ABC, CE is a meaning and centroid D divided CE in 2:1. So,
Let the measures of CD and DE are 2x and x respectively.
DE = 9 (Given)
[tex]x=9[/tex]
Now,
[tex]CD=2x[/tex]
[tex]CD=2(9)[/tex]
[tex]CD=18[/tex]
And,
[tex]CE=CD+DE[/tex]
[tex]CE=18+9[/tex]
[tex]CE=27[/tex]
Therefore, the measure of CD is 18 units and the measure of CE is 27 units.
The measure of CD and CE are 18 and 27 respectively
From the given diagram, the following are true:
CD = 2DEGiven that DE = 9
CD = 2(9)
CD = 18
Similarly;
CE = CD + DE
CE = 18 + 9
CE = 27
Hence the measure of CD and CE are 18 and 27 respectively
Learn more on centroid here: https://brainly.com/question/25845737
Using The graph below identify the axis of symmetry for the parabola below 
Answer:
x=-3
Step-by-step explanation:
The axis of symmetry is the line that separates a parabola directly in half. It is measure on x axis because it is being split in terms of that number. Next, you identify the origin and find exactly where the parabola is in half and that is your answer. Another way to do this would be to identify the vertex of the parabola. The answer is the x coordinate of the location of the vertex. (The highest point of a parabola.)
please i need help
and I need to have work
ds here so I guease this ends a conversation please help
Answer:
Step-by-step explanation:
9 is 4a + 6b - 3c
10 is 2x(small 2) - 6 + 5x
11 is 5 - 2d
12 is - 3x
13 is - a - b
14 is 7c + 9d
15 is 4x(small 2) + 9x - 16
16 is 12y -14
17 is 2a(small 2) + 3ab
I hope I got them all correct. If I got any wrong, feel free to tell me so I can check my work. : )
On a windless day In Janurafy, Carl ties 300 helium filled balloons to his lawn chair 80ft from his 20ft tall house, and begins a vergical ascent into the sky. Hos high is carl when the angle lf depression from carl to the top of his house is 42°
Answer:
The answer is below
Step-by-step explanation:
θ = 90° - 42° = 48°
The angle formed is a right angled triangle, therefore trigonometric identities can be used to find the length of the triangle sides.
tan(θ) = opposite / adjacent
tan(48) = 80 / h
h = 80 / tan(48)
h = 72.03 ft
h is the vertical distance from carl to the top of his house, to get his total height to the ground (H), we use:
H = h + height of house
H = 72.03 + 20
H = 92.03 ft
Therefore Carl is 92.03 ft high
A video game player is in the shape of a rectangular prism. It has a length of 20 inches, a width of 11.4 inches, and a height of 3.5 inches. What is the volume of the video game player in cubic inches?
Answer:
798
Step-by-step explanation:
What is the slope for the line that passes through (2,5) and (6.7).
1. 2/1
2. 1/2
3. -2/1
4. -1/2
Answer:
2. 1/2
Step-by-step explanation:
slope is rise over run
y2-y1/x2-x1
7-5/6-2 = 2/4 = 1/2
How to differentiate this?
Answer:
[tex]\left(x-5\right)^6\left(x+3\right)^3\left(11x+1\right)[/tex]
and
[tex]x=5,\:x=-3,\:x=-\frac{1}{11}[/tex]
Step-by-step explanation:
This problem is slightly more difficult.
We start off with the product rule. If y = v*u then in the case:
[tex]u=\left(x+3\right)^4,\:v=\left(x-5\right)^7[/tex]
[tex]=> \frac{d}{dx}\left(\left(x+3\right)^4\right)\left(x-5\right)^7+\frac{d}{dx}\left(\left(x-5\right)^7\right)\left(x+3\right)^4[/tex]
Now we apply the chain rule:
[tex]\frac{d}{dx}\left(\left(x+3\right)^4\right) = 4\left(x+3\right)^3\frac{d}{dx}\left(x+3\right)\\= 4\left(x+3\right)^3\cdot \:1\\= 4\left(x+3\right)^3[/tex]
We can apply the chain rule again for this second bit:
[tex]\frac{d}{dx}\left(\left(x-5\right)^7\right) = 7\left(x-5\right)^6\frac{d}{dx}\left(x-5\right)\\= 7\left(x-5\right)^6\cdot \:1\\= 7\left(x-5\right)^6[/tex]
So now we are left with this long equation:
[tex]4\left(x+3\right)^3\left(x-5\right)^7+7\left(x-5\right)^6\left(x+3\right)^4[/tex]
Which we can actually factor:
[tex]4\left(x+3\right)^3\left(x-5\right)^7+7\left(x-5\right)^6\left(x+3\right)^4 = \left(x-5\right)^6\left(x+3\right)^3\left(4\left(x-5\right)+7\left(x+3\right)\right) \\= \left(x-5\right)^6\left(x+3\right)^3\left(11x+1\right)[/tex]
...And for the second bit, if we equate to 0, we can apply the Zero Product Property to get all the x values:
[tex]\left(x-5\right)^6\left(x+3\right)^3\left(11x+1\right)=0,\\x=5,\:x=-3,\:x=-\frac{1}{11}[/tex]
A car was traveling at a rate of 2 2/3 yards in 3/4 of a minute. How far is is going each minute?
Jose rents a bike for $4 plus
$2.50 per hour. Elaine rents a
moped for $10 plus $1 per
hour. Write and solve the
system of equations to
determine at what point they
spend the same amount.
Answer:
4 hours
Step-by-step explanation:
Step One: Define Variables -Let x be the # of hours spent using the vehicles
Step Two: Make Equations -Jose: 4 + 2.5x
Elaine: 10 + x
Step Three: Solve -If they spend the same amount then that means:
Elaine's price = Jose's price, therefore:
4 + 2.5x = 10 + x
1.5x = 6
x = 4
At 4 hours, both prices are the same.
Answer:
They spend the same amount after 4 hours
Maria has 64 meters of fencing to enclose a rectangular plot of land. She knows the area of the plot is 252 square meters. Find the dimension of Maria's plot of land.
Answer:
18 meters by 14 meters
Step-by-step explanation:
Area of rectangle is base times height (AKA length times width or however you wish to call the dimensions).
This question is a system of equations question. We can make two equations. We know that every rectangle must have 2 "lengths" and 2 "widths" (4 sides in a rectangle). Since Maria only has 64 meters of fencing, we get the equation:
2L+2W = 64
Now we know the area enclosed must be 252 so we have:
L* W = 252
Rewriting the second equation we get: [tex]W=\frac{252}{L}[/tex]
Plug this into first equation to get: [tex]2L+2\left(\frac{252}{L}\right)=64[/tex]
[tex]2L+\frac{504}{L}=64[/tex]
[tex]2L^2+504=64L[/tex] (multiply everything by L)
Solving the quadratic tells us L can be 18 or 14. Let's consider if L is 18 first by plugging 18 back into the second equation to get 18 * W = 252 which gives us W = 14. If we do the same for when L = 14, we get that W = 18.
Now you might wonder why we have 2 possible combinations, that's because in reality, it doesn't matter which one we label as length (L) or width (W).
you decide to invest $250 in an account that yields a return of approximately 4% each year. what is the domain of this function?