Answer:
Step-by-step explanation:
j=d-27
d=2j-2, using j from above makes this equation become
d=2(d-27)-2
d=2d-54-2
d=2d-56
-d=-56
d=56, since j=d-27
j=56-27
j=29
So John is 29 and Dre is 56
Look at the question below
Answer:
D = 18 miles
Step-by-step explanation:
The coordinate of a library = (4,3)
The coordinate of the school = (-5,3)
We need to find the distance between the library and the school. We can use the distance formula i.e.
[tex]D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\\\=\sqrt{(-5-4)^2+(3-3)^2}\\\\=\sqrt{81}\\\\=9\ miles[/tex]
As the distance between each unit represents 2 miles. It means the distance is 2(9) = 18 miles
So, the correct option is (c).
What is a unit fraction of 4/5
Answer:
1/5
Step-by-step explanation:
Twice the sum of a number, n, and seven is four less than the quotient of a number, n, and three.
Answer:
Step-by-step explanation:
[tex]2(n+7)=\frac{n}{3}-4\\ \\ 2n+14=\frac{n-12}{3}\\ \\ 6n+42=n-12\\ \\ 5n+42=-12\\ \\ 5n=30\\ \\ n=6[/tex]
UREGNT -- BRAINLIEST!
Answer:
12
Step-by-step explanation:
∛1728 = ∛2*2*2*2*2*2*3*3*3*3 = 2*2*3 = 12
Answer:12
Step-by-step explanation: Using Prime Factorization Method
1728=2*2*2*2*2*2*3*3*3
1728=(2*2*2)(2*2*2)(3*3*3)
1728=2^3 *2^3*2
Cube root the number above you would get 2*2*3=12.
PLEASE HELP!! Find the value of x.
I need help with this one...
Consider two circular swimming pools. Pool A has a radius of 32 feet, and Pool B has a diameter of 19.7 meters. Complete the description for which pool has a greater circumference. Round to the nearest hundredth for each circumference. 1 foot ≈ 0.305 meters
The diameter of Pool A _____ is meters. So, the diameter of Pool _____ is greater, and the circumference is _____ by _____ meters
What quadrant is 4,2 in
Answer:
1
Step-by-step explanation:
Answer: The point is located in the fourth quadrant because
x
x
is positive and
y
y
is negative. The quadrants are labeled in counter-clockwise order, starting in the upper-right.
Quadrant 4
Hope this helps. Can u pls give me brainliest
Step-by-step explanation:
What do I do with e^y in the differential equation dy/dt =(2t)/(e^y)?
As you said, the equation is separable:
dy/dt = 2t / exp(y)
exp(y) dy = 2t dt
Integrate both sides:
∫ exp(y) dy = ∫ 2t dt
exp(y) + C₁ = t ² + C₂
Move the constant terms to one side. When you add them together, you get another constant, so you can ignore the subscript altogether:
exp(y) = t ² + C
Solve for y explicitly by taking the logarithm of both sides:
ln(exp(y)) = ln(t ² + C )
y = ln(t ² + C )
C can be any number; if it happens to be 0, then you have
y = ln(t ²) = 2 ln(t )
so B is the correct choice.
You can also approach this from the opposite angle: Assume y is one of the given solutions, then substitute it into the ODE. (Bit more trial-and-error involved, so not a good idea if you're short on time.)
For example, if y = 2 exp(t ) as in choice A, you have dy/dt = 2 exp(t ), so the ODE would become
2 exp(t ) = 2t / exp(2 exp(t ))
which is clearly (I hope) not true.
help me with this math pls
A 8.33% tax is added to a $120 grocery bill.
A. Amount of tax: $9.99
B. Total paid: $127.99
Given: WX ≅ YZ; ∠WXZ ≅ ∠YZX
Prove: WXYZ is a parallelogram
The proof that wxyz is a parallelogram has been done below
How to prove the parallelogramWe can prove that WXYZ is a parallelogram by using the properties of congruent angles and congruent sides.
Given: WX ≅ YZ; ∠WXZ ≅ ∠YZX
From the given information, we know that WX is congruent to YZ and that the angle WXZ is congruent to angle YZX.
Since WX is congruent to YZ, we can conclude that WY is congruent to XZ.
From the given information, we know that angle WXZ is congruent to angle YZX.
Since the angles are congruent, we can conclude that the lines WX and YZ are parallel.
By using the properties of congruent sides and congruent angles, we can now conclude that WXYZ is a parallelogram.
In a parallelogram opposite sides are parallel and congruent. The opposite angles are also congruent. In this case, WX and YZ are parallel and congruent and ∠WXZ and ∠YZX are congruent. So, WXYZ is a parallelogram.
Read more on parallelogram here: https://brainly.com/question/970600
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when adding a Positive, on the number line you move left or right?
Answer:
by adding. positive, you move towards right.
Answer:
Right
Step-by-step explanation:
when looking at a number line, you will see 0, and you will notice all numbers go from 0 to the right in an increasing manner, so it would be 0, then 1, then 2, then 3....
its the other way for negative numbers tho, so (from a line of negative numbers) -3, then -2, then -1, then 0
a good way to remember is to imagine a race, you want to gain progress and go further away from the start (0) so the RIGHT way to go would be UP the number line and INCREASE your progress
A rectangular field is built next to a house and is enclosed by 400 m of fencing for the 3 remaining sides. Determine the dimensions of the field to maximize the area to nearest tenth of a metre.
Answer:
The dimensions of the field to maximise the area are 100 metres (width) and 200 metres (height).
Step-by-step explanation:
The formulas for the area ([tex]A[/tex]), measured in square metres, and the perimeter ([tex]p[/tex]), measured in metres, of the rectangle are, respectively:
[tex]A = x\cdot y[/tex] (1)
[tex]p = 2\cdot x +y[/tex] (2)
Where:
[tex]x[/tex] - Width, measured in metres.
[tex]y[/tex] - Height, measured in metres.
Note: We assume that height of the rectangle is parallel to the wall of the house.
By (2):
[tex]y = p - 2\cdot x[/tex]
In (1):
[tex]A = x\cdot (p-2\cdot x)[/tex]
[tex]A = p\cdot x - 2\cdot x^{2}[/tex] (3)
Then, we obtain its first and second derivatives by Differential Calculus:
[tex]A' = p - 4\cdot x[/tex] (4)
[tex]A'' = -4[/tex] (5)
By equalising (4) to zero, we find the following critical value for [tex]x[/tex]:
[tex]x = \frac{p}{4}[/tex]
And besides the Second Derivative Test, this solution is associated to an absolute maximum. Given that [tex]p = 400\,m[/tex], then the maximum area enclosed by fencing is:
[tex]x = 100\,m[/tex]
[tex]A = 20000\,m^{2}[/tex]
And the height of the triangle is:
[tex]y = 200\,m[/tex]
The dimensions of the field to maximise the area are 100 metres (width) and 200 metres (height).
In ABC, BD is perpendicular to AC. The dimensions are shown in centimeters.
What is the length, in centimeters, of AC?
NEED HELP ASAP
Answer:
12
Step-by-step explanation:
Use the Pythagorean Theorem to solve.
10 squared minus 8 squared=36
Square rt = 6
6 + 6=12
The length, in centimeters, of AC should be considered as the 12
Calculation of the length:Since
In ABC, BD is perpendicular to AC. The dimensions are shown in centimeters.
So here the length should be like
= 10^2 - 8^2
= 100 - 64
= 36
= 6
So for AC it should be
= 6+ 6
= 12
Hence, The length, in centimeters, of AC should be considered as the 12
Learn more about length here: https://brainly.com/question/12497184
Order 3 , -4 , 7, and -6 from least to greatest
Explain?
Answer:
-6 -4 3 7
Step-by-step explanation:
This is right because if it goes- it goes lower and if it goes up on + it goes higher.
Answer:
-6, -4, 3, 7
Step-by-step explanation:
First you need to know that negative numbers are smaller than positive numbers, the larger the number beside the negative sign is, the smaller the number.
At a carnival, the cost to play a bowling game is $2, plus $0.40 for each attempt to knock over the pins. Which inequality would you use to find the number of attempts you can make if you have less than $4.30
Answer:
C
Step-by-step explanation:
Please help! Brainliest Answer! Thank You!
Answer:
B) 63°
Step-by-step explanation:
Step 1: find the angle beside x (inside the pentagon)
*A pentagon has a total of 540°
119 + 100 + 116 + 88 = 423
540 - 423 = 117
Step 2: x is a supplementary angle, which means it's angle adds up to 180°
Since we know the other angle is 117°, we just subtract that from 180
180 - 117 = 63
x = 63
Pls I need help thank you
Answer:
angleLMK and angleQPR
UHHH HELP ITS SO CONFUSING:(
Answer:
a. y = 2x b. 32
Step-by-step explanation:
a, y = kx, where k is a non-zero constant
when x = 7, y = 14
14 = 7k
k = 2
The required equation is y = 2x
b. From(a), y = 2x
y = 2(16)
y = 32
solve the x. 7x-7=2x-1
You are traveling in a car. Your speed is 15 miles per hour. What is your speed in feet per minute?
Answer:
1,320 Feet per min
Step-by-step explanation:
The Answer is : 1320 feet
What is the total length of 13 rods?
Answer:
a rod is 16 1/2 feet long, so 13 x 16.5= 214.5 feet
Which number is equivalent to 5.4 X 10 to the power of 2
Answer:
=540
Step-by-step explanation:
To get the answer all we have to do is convert the scientific notation into a regular one. We can do this by moving the decimal place depending on what the power is.
In this case, the power/exponent/the number raised, whatever you would call it is 2, so we are going to move it to two places.
Hope this helps!!
Shen has a box that contains t toys.
Write an expression for the total number of toys
he has in the box when:
a ) he puts in 4 more b) he takes 2 out
c) he adds 5 d) he takes out half of them.
Answer:
(a+4)(b-2)=t
a+4=0
-4+4=0
and
b-2=0
2-2=0
Step-by-step explanation:
A is opposite of what is in the equation = -4
b is opposite of what is in the equation = 2
Can I have some help please?
See diagram below.
===========================================================
Explanation:
The highest point on f(x) is the vertex point since the leading coefficient is negative. The vertex is located at (h,k)
For the general parabola y = ax^2 + bx + c, we can define h to be
h = -b/(2a)
In this case, we plug in a = -2 and b = 8 to find h to be...
h = -b/(2a)
h = -8/(2*(-2))
h = -8/(-4)
h = 2
Then the value of k is equal to f(h). So we plug x = 2 into the f(x) function to get
f(x) = -2x^2 + 8x - 1
f(2) = -2(2)^2 + 8(2) - 1
f(2) = -2(4) + 8(2) - 1
f(2) = -8 + 16 - 1
f(2) = 8 - 1
f(2) = 7
This means k = 7
So the vertex for f(x) is at (h,k) = (2,7)
The max value of f(x) is f(x) = 7 which is the same as y = 7.
The graph shows the highest point is at (0,10). The highest point of g(x) is when y = 10. So this is the largest g(x) can get. We only are concerned with output values when we want to maximize whatever the function is.
Therefore, g(x) produces the larger maximum value compared to f(x).
We can see that if we were to graph both f(x) and g(x) together. The g(x) curve peaks higher compared to f(x).
The diagram is shown below. I used GeoGebra to make the graph, though you could use Desmos or a TI calculator (or similar) if you want.
I need help with this please I appreciate it!
Answer:
1. Ella can scale it up by 3 or by using the ratio 3:1, the smaller bed is exactly 1/3 of the bigger bed.
2A. No I am way taller than the 75".
2B. Ella can scale the bed up by 7:1 so that it can fit me.
Step-by-step explanation:
A line contains the points(– 4, 1) and (4,6). Decide whether or not each of these points is on the line.
Answer:
its undefined so it wont be on the line
Step-by-step explanation:
6-1=5
4-4=0
What will be the sign of the product if we multiply together.
(a) 8 negative integers and 3 positive integers?
(b) 5 negavtives integers and 4 positive integers?
(c) (-1) twelve times?
(d) (-1), 2m times, m is a natural number?
Answer:
(a)positive
(b)negative
(c)positive
(d)positive
Aisha gets on the elevator at sixth floor.She rides up three floors to meet shaimaa.They ride down seven floors to meet abeer.How many floors is aisha from where she start?
Answer: See explanation
Step-by-step explanation:
Aisha gets on the elevator at sixth floor and then rides up three floors to meet shaimaa before riding down seven floors to meet abeer. This means Shel be at the (6+3-7) = 2nd floor.
The number of floors that aisha is from where she start will be:
= 6 - 2
= 4 floor downwards. Or -4.
Need an explanation pls