Solving the example, hope it will help you with better understanding.
Given system:
2c + 3d = 125c - d = 13We need to eliminate one of the variables c or d. Let us eliminate d.
We see the first equation has 3d and the second equation has - d. The coefficients of d are 3 and - 1. If we multiply the second one by 3 it will become - 3, then if we add them up they will cancel, 3d - 3d = 0. By doing this we'll eliminate the variable d and left with variable c in the resulting equation.
Demonstrating how it works:
2c + 3d = 12, we leave it as is
5c - d = 13, we multiply all terms of this by 3, it becomes, 15c - 3d = 39
Now add up the two equations:
2c + 15c + 3d - 3d = 12 + 39, eliminated d17c = 51 solving for cc = 51/17c = 3Now we can find the value of d:
2c + 3d = 122*3 + 3d = 126 + 3d = 123d = 6d = 2Our solution is:
c = 3, d = 2MATH HOMEWORK WHO CAN ANSWER
Answer:
its the 3 one
Step-by-step explanation:
Answer:
See below
Step-by-step explanation:
A. [tex] \angle 4 \: and \angle 6[/tex] - - - (same side interior angles)
B. [tex] \angle 5 \: and \angle 8[/tex] - - - (vertical angles)
C. [tex] \angle 2 \: and \angle 6[/tex] - - - (corresponding angles)
D. [tex] \angle 4 \: and \angle 5[/tex] - - - (alternate interior angles)
I need help on this?
A measuring tape is generally a more precise tool for measuring length than
having a person "step off" the distance.
A. True
B. False
Answer:
a
Step-by-step explanation:
a measuring tape is more precise than measuring by whatever the second method is.
Fire Warden Armband
$7.50 each
$6.50 each
First Aid Armband
$7.00 each
$6.00 each
Which of the following items showed the greatest percentage discount in price for
buying in bulk?
Jackets
Trousers
Rucksacks
Belts
Fire Warden Caps
Submit
© Copyright IBM Corp. 2012, 2021
A student is given three triangles and must determine which triangles are congruent. The student is also told that ∠B = ∠D = ∠Y. Which of the following statements is true?
Answer:
should i do all the questions?
Janet picked x flowers. Rhea picked 48 flowers, which is 19 more than the number of flowers Janet picked. The equation below can
be used to find the number of flowers Janet picked.
I + 19 = 48
Alisa picked 2 times as many flowers as Janet. How many flowers did Alisa pick?
A. 29 flowers
B. 58 flowers
C. 67 flowers
D. 77 flowers
HELP ASAP I WILL NARK THE RIFHR ANSWER AS BRAINLIST!!!!!
Answer:
B
Step-by-step explanation:
48-19=29x2=58 so yeah thats how you do dat
What is the equation for the line in slope intercept form
Answer:
y = 12x + 6
Step-by-step explanation:
y-intercept (c)= 6
m= 12
therefore, y=mx+c
y=12x + 6
what is 12x^2 + 16x^3
Answer:
4x^2(3+4x)
Step-by-step explanation:
You work as a telemarketer and need to report to your boss the percentage of your weekly calls that result in sales
If 23 of your 177 calls last week resulted in sales, approximately what percentage should you report to your boss?
07%
O 8%
13%
15%
0 23%
During this pandemictl the sales of alcohol increased in Linda's stop shop from 120 boxes to 150 boxes. What is the precent of increase?
Answer:
30/120 *100
Step-by-step explanation:
which is 25 percent
The difference between double a number and 4 is 16
Answer:
2x - 4 = 16
Step-by-step explanation:
'the difference' shows that its subtraction so u have to put a - in the equation
'double' means 2 and since you dont know the value of 'a number' you replace it with a variable like x. combine them and you get 2x
so far it should look like 2x -
4 is equal to 4 so just put a 4 in front of the subtraction sign
it'll look like 2x - 4 now
'is 16' basically means is equal to 16 so now ur equation should look like:
2x - 4 = 16
if you wanted to solve that u could add 4 to both sides then divide both sides by 2 and get x = 10
Answer:
x = 10
Step-by-step explanation:
2x - 4 = 16
2x = 20
x = 10
Hope that helps!
The equation h(t) = -16t^2? + 32t + 128 models the path of a ball thrown in the air from the top of a building. After how many seconds does the ball reach its maximum
height?
Answer:
1 second
Step-by-step explanation:
The number of seconds for the ball to reach the maximum height is t = 1 s
What is a function rule?The function rule is the relationship between the input or domain and the output or range. A relation is a function if and only if there exists one value in the range for every domain value.
A function is a relation from a set of inputs to a set of possible outputs where each input is related to exactly one output.
Given data ,
Let the function be represented as A
Now , the value of A is
f ( x ) = -16t² + 32t + 128
The function h(t) gives the height of the ball at time t. The maximum height occurs at the vertex of the parabolic path, which is given by the formula:
t = -b / (2a)
where a = -16 and b = 32 are the coefficients of the quadratic term and the linear term, respectively.
Substituting these values into the formula, we get:
t = -32 / (2(-16)) = 1
Therefore, the ball reaches its maximum height after 1 second
Hence , the function is solved
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The triangles shown are similar. Which side of triangle PQR corresponds to side LN in triangle MNL? Triangle L N P. Side L N is 12, N M is 10, M L is 14. Triangle P R Q. Side P R is 28, R Q is 24, Q P is 20. RQ PQ PR LM
Answer:
The side on triangle PQR that corresponds to side LN in triangle MNL is side QR.
Step-by-step explanation:
Triangle PQR is a dilated version of triangle LMN, specifically a dilation of 2, since LN = 12, the corresponding side to it on triangle PQR is side QR because it is twice as big as side LN, which is the dilation value for converting triangle LMN to triangle PQR.
The side of triangle PQR corresponds to side LN in triangle MNL will be QR.
What are similar triangles?Similar triangle are those which have two pairs of interior corresponding angles are equal or two pairs of corresponding sides are in proportion.
We have,
Two triangles as shown in the given figure,
Now,
Using triangle similarity rule,
i.e.
Sides are in equal proportion,
i.e.
[tex]\frac{LM}{PR} =\frac{MN}{PQ} =\frac{LN}{QR}[/tex]
So,
Put values of sides ,
[tex]\frac{14}{28} =\frac{10}{20} =\frac{12}{24}[/tex]
i.e.
[tex]\frac{1}{2} =\frac{1}{2} =\frac{1}{2}[/tex]
So,
All sides in proportion according to the question,
Now,
The side which is in proportion to side LN is QR.
Hence, we can say that the side of triangle PQR corresponds to side LN in triangle MNL will be QR.
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HELP PLEASE I need the answer now, I will give 100 points to whoever answers first!!!
Answer:
1) c. 1,208 ft
2) a. 20 squares
Step-by-step explanation:
sin∅=24/25, find the cos
Answer:
θ=2πn1 + arcsin(24/25), n1 ∈ Z or θ=2πn2 +π−arcsin(24/25) , n2 ∈ Z
Step-by-step explanation:
Hope this helps
Step-by-step explanation:
sin A = 24 / 25
as we know that :
sin ² A + cos ²A = 1
cos ²A = 1 - sin²A
cos ²A = 1 - ( 24/25) ²
cos² A = 1 - 576 / 625
cos ²A =. 625 - 576 / 625
cos ² A. =. 49 / 625
cos A =. √ 49/ 625
cos A = 7 / 25
plz mark my answer as brainlist plzzz .
I hope you will find it useful .
plz it took a really great effort .
Tess and Alice are both on the swim team. Last practice, they each swam laps for the same amount of time, but Tess finished more laps. This weekend, they're swimming the same number of laps at a swim meet. Who will likely finish first?
Answer:
the answer is tess
Step-by-step explanation:i did it
The person that will likely finish first is: Tess.
What is Comparison factor?Factor comparison is a systematic and scientific way of job appraisal that assesses jobs based on a number of characteristics rather than the job as a whole. The goal of factor comparison is to assign monetary worth to the various components of each employment role.
First, Tess and Alice swam laps for the same amount of time, but Tess finished more laps.
Second, they are swimming the same number of laps at a swim meet.
As, Tess finished more laps then Alice so he is always ahead of Alice.
In second time again Tess will finish more laps comparison to Alice.
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Mrs. Wilson bought 2 boxes of candy for the party. After filling the pinata and the candy dish, she had ⅚ of a box left. If she split the remaining candy into 10 goodie bags, how much of a box of candy did she put in each bag?
Answer:
Mrs Wilson put 1/12 of the box of candy in each goodie bag
Step-by-step explanation:
5/6 is kinda hard to divide into 10 pieces left like it is, so we turn 5/6 into 10/12 (they're both the same)
Then from here, it's easy
10/12 and 10 goodie bags
So 1/12 goes into each one
What is the relationship between 28 and 24? Select the TWO answers
that apply.
PLSSSSSSS HELP ME WITH THESE FOUR QUESTIONS (•‿•)
Answer:
1. C
2. A
3. C
4. A
Step-by-step explanation:
what is the answer ?
Answer: cot
Step-by-step explanation: cos
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sin
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cos
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Combine
cos
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cos
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sin
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)
.
cos
(
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sin
(
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Convert from
cos
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sin
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cos
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sin
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cot
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John plans to buy a computer that is worth R11 500 cash.
Determine how much John will pay if the computer store offers a discount of
12 % on the cash price.
%
Answer:
cool how much he got
Step-by-step explanation:
the radius of circle C is 10cm. if measure of arc AB is 60, what is the of sector ACB
Find dy/dx using logarithmic differentiation.
y = (3 + x)^4/x , x>0
Explain how to use patterns or sequences to determine the last digit of the number 7N, where N is the four-digit year of your birth.
If one face of a cube has an area of 6 in2, what is the total surface area of the cube?
Answer:
216..................
find the missing angle
Answer:
129
Step-by-step explanation:
Answer:
129
Step-by-step explanation:
YURR HELP FA MAH SISTA OUT WITH FA HER HOMEWORK if you don't know what I am saying I am saying hey help my sister with her homework
Answer:
yurrrrr
Step-by-step explanation:
ion know what to put...
Answer:
yurrrrrrrrrrrrrrrr bet
Step-by-step explanation:
HELP PLZ!!!! I will give brainlest
Mr. Olejnik's son is going for a bike ride on his new bike. The cold weather has the tires deflated. Normal pressure is between 35 psi and 60 psi. (50 is ideal). The back tire is currently at 18 psi. If Mr. Olejnik increase the tire pressure by 250%, will this be too much?
Help Please :)
Answer:
Step-by-step explanation:
2.5*18 = 45
So, the answer would be
Yes, this is in the range between 35 psi and 60 psi.
I'm a Clay student, are you too? :) Good luck!!
Pl help it’s for a grade
Answer:
A,d,e not sur tho
Step-by-step explanation:
Answer:
[tex]r^{2}+6r+9=(r+3)^{2} \\m^{2}-10m+25=(m-5)^{2}[/tex]
Step-by-step explanation:
Only !
Which expression is undefined?
Answer:
C. 4/0
Step-by-step explanation:
You can't divide 4 by 0.
A. you would have gotten -0.5
B. you would have gotten 0
D. you would have gotten 0
Hope this help!! :)
Answer:
C. [tex]\frac{4}{0}[/tex]
Step-by-step explanation:
you cannot divide by zero, therefore option C is the correct choice because [tex]\frac{4}{0}[/tex] means 4 ÷ 0.
if 0 was the numerator, like in [tex]\frac{0}{4}[/tex] or 0 ÷ 4, the answer would be 0 because 0 divided by 4 is 0. this can be kind of confusing at times, but just remember that as long as 0 is the denominator in a fraction (meaning the 0 is under the fraction bar), the answer will always come out as undefined because you can't divide by 0.
i hope this helps! have a great day <3