Answers
Answer: 4th option, 28 = 28
Step-by-step explanation:
Cross multiplying means we will multiply the numerator of the first fraction by the denominator of the second. Then we will multiply the denominator of the first by the numerator of the second.
-> See attached for a visual example and my work.
28 = 28, so the fractions are equal.
Answer:
Step-by-step explanation:
2/7=4/14 because 7x4=28 and 2x14=28. so you're gonna see which equals 28. but for example, if it's 10, you do 10/1.
Related Questions
A stick of gum is 2 inches long. Are 10 sticks of gum longer than 3 feet?
Answers
If AC = 41, find the value of x? (Giving 35 points)
Answers
17x+7= 41
17x = 34
X = 2
[tex]\huge \boxed{\sf x=2}\\\\\\\displaystyle \sf AC=AB+BC\\\\41=3x-1+14x+8\\\\41=17x+7\\\\Subtracting\ 7\ from\ each\ side \\\\ 41-7=17x+7-7 \\\\ 34=17x\\\\Dividing\ each\ side\ by\ 17 \\\\ \frac{34}{17}=\frac{17x}{17} \\\\ 2=x[/tex]
A wire goes from the top of a 55 ft pole to the ground. It makes a 70
o angle with the ground. How long is the wire? NEEDN ASAP!!! ill give 20 points for this
Answers
Answer:
58.5 ft
Step-by-step explanation:
sin 70=55/length
length=58.5 ft
What is the smallest number of marbles that could be divided up either into bags of $18$ marbles or into bags of $42$ marbles, with no marbles left over in each case
Answers
The number that could be divided up either into bags of 18 marbles or into bags of 42 marbles is 126.
How to find that number?
The number that could be divided up either into bags of 18 marbles or into bags of 42 marbles, with no marbles left over in each case, is the lowest common multiple between these two numbers.
By decomposing these numbers as a product of primes, we get:
18 = 2*3*3
42 = 2*3*7
Notice that the first two prime factors are the same, but the third one changes. To get the first common multiple, we need to multiply both numbers by the third factor (the different one) of the other.
We will get:
18*7 = 126
42*3 = 126
Then 126 is the smallest number that can be divided by 18 and 42.
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What is the median of the following distribution?
26, 26, 28, 29, 31, 33, 35, 36, 37, 38, 40, 42, 43, 46, 48
OA. 33
OB. 37
O C. 56
OD. 43
OE. 36
Answers
What is the quadratic regression equation that fits these data?
the answer is:
y = 2. 13x^2 + 0. 13x + 6. 39
hope it helps
Answers
The regression equation of the data values is y = 2.13x^2 + 0.13x + 6.39
How to determine the regression equation?The attached table represents the missing information in the question.
Next, we enter the data values in a graphing technology
Using the graphing technology, we have:
a =2.13; b = 0.13 and c = 6.39
A quadratic regression is represented as:
y = ax^2 + bx + c
So, we have:
y = 2.13x^2 + 0.13x + 6.39
Hence, the regression equation of the data values is y = 2.13x^2 + 0.13x + 6.39
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20 points!!!What is the equation to plug this into a graph?
Answers
t = 0
t = 5
Step-by-step explanation:
(-10t^2+50t)/(t^2+4t+3)
I'm making t into x so its not confusing with the plus sign
(-10x^2+50x)/(x^2+4x+3)
with (x^2+4x+3) :
what 2 numbers when multiplied make 3 and when added make 4 ?
they are 1 and 3
(x+1)(x+3)
(-10x^2+50x)/(x+1)(x+3)
(-10x(x-5))/(x+1)(x+3) =0
(-10t(t-5))/(t+1)(t+3)=0
t = 0
t = 5
Pls help and put equation and work
Answers
Step-by-step explanation:
that is a large gift. wow ! you have a lucky teacher ...
the surface of a block consists of 6 (3 pairs of) areas :
front and back
left and right
top and bottom
you know that the area of a rectangle is length × width ?
so,
front and back are
2× 9×13.5 = 18×13.5 = 243 m²
let and right are also
2× 9×13.5 = 243 m²
top and bottom are
2× 9×9 = 2 × 81 = 162 m²
so, for the whole package you need
243 + 243 + 162 = 648 m²
the money for that amount of wrapping paper alone would be way more than I ever spent on a teacher in my life ...
Triangles
Calculate the perimeter of ABC
Answers
Answer:
40 units.
Step-by-step explanation:
Consider ∆ADC
Perimeter = 26cm (Given)
★ Perimeter of a triangle is the sum of its three sides.
=> AD + DC + AC = 26
Now, from the figure we can see that side AD = DC
Hence we can also write
=> AD + AD + AC = 26
=> 2AD + AC = 26
=> AC = 26 - 2AD ——— ‘1’
Consider ∆ ABC,
Let us consider it's perimeter to be ‘x’.
=> AB + AC + BC = x
Here also we can make out from the figure that side AB = BC
=> AB + AB + AC = x
=> 2AB + AC = x
From ‘1’ substituting AC value, we get
=> 2AB + ( 26 - 2AD ) = x
=> 2AB - 2AD + 26 = x
=> 2( AB - AD ) + 26 = x
=> 2 (7) + 26 = x ( Given )
Therefore perimeter of the ∆ABC (x) = 40
Please solve with explanation
Answers
Real life scenarios of acute angles are:
Sighting a ball from the top of a building at an angle of 55 degrees.The angle between two adjacent vanes of a fan that has 6 vanesWhat are acute angles?As a general rule, an acute angle, x is represented as: x < 90
This means that acute angles are less than 90 degrees.
The real life scenariosThe real life scenarios that involve acute angles are scenarios that whose measure of angle is less than 90 degrees.
Sample of the real life scenarios that satisfy the above definition are:
Sighting a ball from the top of a building at an angle of 55 degrees.The angle between two adjacent vanes of a fan that has 6 vanesRead more about acute angles at:
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which represents the inverse of the function f(x)=4x?
Answers
Answer:
h(x) = 1 / 4x
last choice
Step-by-step explanation:
y = 4x becomes x = 4y
we want to solve for y,
divided both sides by 4
x / 4 = 4y / 4
x / 4 = y
Answer:
[tex]h(x) = \dfrac 14 x[/tex]
Step-by-step explanation:
[tex]y = f(x) = 4x\\\\\text{Replace x with y and then solve for y:}\\\\~~~~~x = 4y\\\\\implies y = \dfrac x4\\\\\implies f^{-1}(x) = \dfrac 14x[/tex]
can i have help with this
Answers
Answer:
2^1
Step-by-step explanation:
a^m/a^n = a^(m-n)
so, 2^8/2^7 = 2^(8-7) = 2^1
hope this helps :)
If we observe closely ,
It is in the form of [tex]a^{m}/a^{n}[/tex]
Which is equal to [tex] a^{m-n}[/tex]
Now from given , we get it is [tex]2^{8-7}[/tex] = [tex] 2^{1}[/tex]
Option a is correct
What is the length of EF?
Answers
Answer:
(a) 3.8
Step-by-step explanation:
The Law of Sines can be used to find a missing side length in a triangle where the angles are known and at least one side is given. It tells you the ratio of side lengths is equal to the ratio of the sines of their opposite angles. In effect, longer sides are opposite larger angles.
__
compare anglesThe given side length (DE=3) is opposite given angle F=50°. The unknown side length EF is opposite larger angle D=75°.
compare sidesSince the unknown side is opposite a larger angle than the other angle given, the length of the unknown side will be longer than the side given.
EF > DE
EF > 3
Only one answer choice satisfies this inequality.
EF = 3.8
__
Additional comment
If you want to do the actual computation, we have ...
EF/sin(D) = DE/sin(F)
EF = DE·sin(D)/sin(F) = 3·sin(75°)/sin(50°) ≈ 3.7828
EF ≈ 3.8
In 2003 Exxon Mobil received a contract from the government worth $756,733 while Aerospace received a contract from the government worth $539,517. What was the combined total of their contracts?
Answers
The combined total of their contracts is $1,296,250
How to determine the combined total?The values of the contracts are given as:
Exxon Mobil= $756,733Aerospace = $539,517The combined total is represented as:
Total = Exxon Mobil + Aerospace
Substitute known values
Total = $756,733 + $539,517
Evaluate the sum
Total = $1,296,250
Hence, the combined total of their contracts is $1,296,250
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Active
3
2
D(X)
4 5
de
8
9
TIME REMAINING
50:16
10
Which input value produces the same output value for
the two functions on the graph?
O x=-1
O
x = 0
O
x = 3
O x = 4
what’s the answer
Answers
Answer:If your in FLVS i don't really know because this give really hard things. Wish you luck
Step-by-step explanation:
For a science project, billy observed a chipmunk and a squirrel stashing acorns in trees. the chipmunk hid 3 acorns in each tree. the squirrel hid 4 acorns in each tree. they each hid the same number of acorns, although the squirrel needed 2 fewer trees. you are going to investigate the number of acorns that each animal hid.
Answers
The number of acorns that each animal hid is 48
What is an Equation ?An equation is formed when two algebraic expressions are equated by an equal sign.
It is asked to calculate the number of acorns that each animal hid.
Total number of acorns hid = number of acorns hid per tree * number of trees
Let T be the number of trees chipmunk used
For chipmunk: = 3*T
For squirrel: = 4*(T-4)
As both the animals hid same number of acorns.
3T = 4(T-4)
3T = 4T - 16
16 = T
Therefore the chipmunk hid 16 * 3 = 48 acorns
and the squirrel hid 4(16-4) = 48 acorns.
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what is the standard deviation from the mean
roundest to the nearest tenth
Answers
The standard deviation from the mean of the data with a variance of 36 is: B. 6.
Standard deviation can be described as the average of the distance each of the value lies from the mean of the data.
The standard deviation is the square root of the variance.
Variance of the data is given already as 36.
Standard deviation = √36 = 6.
The answer is B. 6.
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A ball is thrown upward in the air. The height h, in feet, of the ball t seconds
after being thrown can be determined by the equation
h=-16t² + 40t + 4
How long does it take for the ball to hit the ground? Round to one decimal
place.
Answers
By solving a quadratic equation, we will see that the ball hits the ground after 2.6 seconds.
How long does it take for the ball to hit the ground?
Here we need to solve the equation:
h(t) = 0 = -16t² + 40t + 4
This represents that the ball hits the ground.
So we just need to solve that quadratic equation, using the general formula we get:
[tex]t = \frac{-40 \pm \sqrt{(40)^2 - 4*4*(-16)} }{2*-16} \\\\t = \frac{-40 \pm 43.1 }{-32}[/tex]
We only care for the positive solution, which is:
t = (-40 - 43.1)/-32 = 2.6s
So the ball hits the ground after 2.6 seconds.
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Which shows the un-simplified solution for x2 + 8x + 6 = 0?
Answers
Answer:
A) [tex]\displaystyle x=\frac{-8\pm\sqrt{40}}{2}[/tex]
Step-by-step explanation:
We know that the discriminant is [tex]b^2-4ac=(8)^2-4(1)(6)=64-24=40[/tex], so it cannot be B or C.
Also, because [tex]2a=2(1)=2[/tex], then the denominator must be 2, which means that A is the correct un-simplified solution for the quadratic equation.
Answer:
Choice A
Step-by-step explanation:
Let's solve to check.
Given:
x^2 + 8x + 6 = 0
Solution:
We know that,
Let us assume that Quadratic Formula = x[tex] \implies \rm \: x = \cfrac{ { - b±} \sqrt{ {b}^{2} - 4(ac)} }{2a} [/tex]
Here, a = 1b = 8c =6So substitute them:
[tex] \implies \rm \: x = \cfrac{ - 8± \sqrt{ {8}^{2} - 4(1 \times 6)} }{2 \times 1} [/tex]
[tex] \implies \rm \: x = \cfrac{ - 8± \sqrt{64 - 4 \times 6 } }{2} [/tex]
[tex] \implies \rm \: x= \cfrac{ - 8 ±\sqrt{64 - 24} }{2} [/tex]
[tex]\boxed{ \implies \rm \: x = \cfrac{ - 8 ±\sqrt{40}}{2}}[/tex]
Hence, choice A[x = {8±√(40)/2}] shows the un-simplified solution for x2 + 8x + 6 = 0.
27 Solve for x to the nearest tenth: x² + x - 5 = 0.
Answers
Answer:
Step-by-step explanation:
We can use the quadratic formula to get the answer to this
Quadratic Formula: -b +- √b² - 4ac/2a
Once we input A, B, and C into this, and solve any multiplication, we get
x = -1 +- √1 + 20/2
We divide by 2a, which 2a = 2.
-0.5 +- 10.5.
these are the following values of x:
x = 10
x = 11
Pretty sure this is it, hope it helps!
i forgot how to do some maths so i need help: solve 2x + 3 = -1
Answers
-3 = -3
2x = -4
— —
2 2
x = -2
Hope this makes sense and helps :)
Hi student, let me help you out! :)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
We are asked to solve the equation [tex]\pmb{2x+3=-1}[/tex].
[tex]\triangle~\fbox{\bf{KEY:}}[/tex]
The goal is to isolate x.First, subtract 3 from both sides of the equal sign:
[tex]\mathrm{2x=-1-3}[/tex]
[tex]\mathrm{2x=-4}[/tex]
Now, divide both sides by 2:
[tex]\mathrm{x=-2}[/tex]
Hope it helps you out! :D
Ask in comments if any queries arise.
#StudyWithBrainly
~Just a smiley person helping fellow students :)
PLEASE HELP ME! I NEED HELP, THIS IS REALLY IMPORTANT!!!
80 POINT QUESTION
Answers
Answer: A translation left 3 units and up 6 units
In order to find the translation of a shape in the graph.
Take particular one point from the original shape: (0, 2)
Take particular one point from the translated shape: (-3, 8)
Let the translation be (x, y)
Original + Translation = Translated Image
(0, 2) + (x, y) = (-3, 8)(x, y) = (-3, 8) - (0, 2)(x, y) = (-3, 6)This implies the shape has been translated 3 units left and 6 units up.
a concert promoter sold 475 tickets to a rock concert the ticket prices for different seat locations were 10 15 and 20 the total income from the concert was 6300 if the combined number of 10 15 tickets sold was 4 times the number of 20 tickets sold how many 10 tickets were sold
Answers
282.5 of 10 tickets were sold in the rock concert by the promoter
How to determine the number of 10 tickets?To do this, we make use of the following representations:
x represents the 10 ticketsy represents the 15 ticketsz represents the 20 ticketsThe 475 tickets that were sold means that:
x + y + z = 475
The income means that:
10x + 15y + 20z = 6300
Also, we have:
10y = 4z
Divide both sides by 10
y = 0.4z
Substitute y = 0.4z in 10x + 15y + 20z = 6300
10x + 15*0.4z + 20z = 6300
10x + 6z + 20z = 6300
Evaluate the like terms
10x + 26z = 6300
Substitute y = 0.4z in x + y + z = 475
x + 0.4z + z = 475
Evaluate the like terms
x + 1.4z = 475
Make x the subject
x = 475 - 1.4z
Substitute x = 475 - 1.4z in 10x + 26z = 6300
10(475 - 1.4z) + 26z = 6300
Expand
4750 - 14z + 26z = 6400
Evaluate the like terms
12z = 1650
Divide both sides by 12
z = 137.5
Substitute z = 137.5 in x = 475 - 1.4z
x = 475 - 1.4 * 137.5
Evaluate
x = 282.5
Hence, 282.5 of 10 tickets were sold
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Sandra wants to wrap a gift box 6 inches in length, 4 inches in height, and 13 inches in width. How much wrapping paper does Sandra need to buy
Answers
Answer:312
Step-by-step explanation: multiply 6*4*13
Point D is the midpoint of AB and point E is the midpoint of BC. Select all of the statements to the right that must be true.
Answers
Answer + Step-by-step explanation:
» ABC ≅ DBE
» DE // AC
(properties of the mid-segment of a triangle)
» Length of DE = 1/2 length of AC
(properties of the mid-segment of a triangle)
» ∠BDE = ∠DAC
(Corresponding angles)
What is the median of the following data set?
{6, 3, 9, 1, 7}
3
6
8
9
Answers
Answer:
6
Step-by-step explanation:
First order them from least to greatest:
1, 3, 6, 7, 9
The median is 6 because it is the middle value.
Hope this helps! Brainliest would be really appreciated
How was life different for Romans with low incomes and wealthy Romans? Romans living in poverty had few duties and more free time. Wealthy Romans had many responsibilities and few days off. Wealthy Romans relied on servants to run their households. Romans living in poverty were not allowed to work a trade.
Answers
Wealthy Romans relied on servants to run their households.
https://brainly.com/question/16395373
Answer:
The correct answer is Wealthy Romans relied on servants to run their households.
Step-by-step explanation:
I got it right on edge 2022
geometry please answer
Answers
Answer: 8
Step-by-step explanation:
[tex]\frac{180(n-2)}{n}=135\\180(n-2)=135n\\180n-360=135n\\-360=-45n\\n=\boxed{8}[/tex]
What are the factors pair of 32.
Answers
Answer:
1&32 2&16 4&8
Step-by-step explanation:
Factor Pair Pair Factorization
1 and 32 1 x 32 = 32
2 and 16 2 x 16 = 32
4 and 8 4 x 8 = 32
Please help! Giving brainlist!
Answers
Answer:
2
Step-by-step explanation:
The rise is two using the slope formula
rise/run
2/3
2 is the rise
Give brainliest please.
Hope this helps
Answer:
2
Step-by-step explanation:
Remember the rise-run formula
rise ÷ run
The rise is 2, and the run is 3, making this two-over-three.