using elimination, which variable would you choose to cancel out in the following system. explain your choice
Answers
Answer:
The x-variable
Step-by-step explanation:
if the first equation is multiplied by 3. The second one multiplied by 2, then. x-variable will be cancelled out
Related Questions
50% of 50% of x. PLEASE HELP I WILL GIVE BRAINLIEST
Answers
Answer:
25. 50 percent of 50 is 25 divided by 2.
Step-by-step explanation:
step1:Our output value is .50.
step2:we represent the unknown value with x
step3: from step1 above,.50=100%
step4: similarly,x=50%
step5: This results in a pair of simple equation:
.50=100%(1)
x=50%(2)
step6:by dividing equation 1 by equation 2 and noting that both the RHS(right hand side)of both equations have the same unite(%);we have
.50. 100%
____. = ____
x. 50%
step7: again,the reciprocal of both sides gives
x. 50
___ =. ___
50. 100
°x=0.25
therefore,50%of.50 is 0.25
Sasha uses 6.1 pints of white paint and blue paint to paint her bedroom walls. 2/5 of this amount is white paint, and the rest is blue paint. How many pints of blue paint did she use to paint her bedroom walls?
Answers
Answer: 3.66 pints of blue paint.
Step-by-step explanation:
She used 2/5 of the total number of pints to paint white.
That number in pints is:
= 2/5 * 6.1
= 2.44 pints of white
The number of pints used to paint blue is therefore:
= 6.1 - 2.44
= 3.66 pints of blue paint.
Evaluate 10f+⅔(4d+7)-8
Answers
Answer:
9.3 simplified should be 3 if this isn't the answer then I don't know what is anymore because I just wasted my time if its wrong ;-;
Step-by-step explanation:
also I cant put the explanation sorry it says it has a link or inappropriate words in it when it doesn't.
9.3 divided by 3 is 3 so sense that isn't a fraction or anything i guess 3 is the answer in not to sure-
Answer:
8/3d +10f +-10/3
Step-by-step explanation:
let f(X)=x^2+2 and g(X)=1-3x
Answers
Answer:
1. y = x2+2
2. g = (-3x+1)/x
Step-by-step explanation:
1. No explanation
2.
Let's solve for g.
gx=1−3x
Step 1: Divide both sides by x
gx /x = −(3x+1 )/x
g = (-3x+1)/x
Hope it helped!
0.2(3k+1)=-0.4-(-0.2-0.1K)
Answers
Answer:
k=−0.8
Step-by-step explanation:
Start with the equation: 0.2(3k+1)=-0.4-(-0.2-0.1K)
Use distributive property on each side of the equation. For the left side, distribute 0.2 into 3k and 1, and for the right side, distribute -1 into -0.2 and -0.1k. (We use a -1 because the negative sign on the outside of the parenthesis is equivalent to -1)
(0.2)(3k) + (0.2)(1) = 0.6k + 0.2
(-1)(-0.2) + (-1)(-0.1k) = 0.2 + 0.1k
New equation: 0.6k + 0.2 = -0.4 + 0.2 + 0.1k
Now we can combine like terms on the right side. (-0.4 and 0.2)
0.6k + 0.2 = 0.1k - 0.2
Now to get rid of k on one side, we can subtract 0.1k from the right side.
(0.6k - 0.1k) + 0.2 = (0.1k - 0.1k) - 0.2
0.5k + 0.2 = -0.2
Now we need to get 0.5k by itself, so we'll subtract the 0.2 on both sides.
0.5k + (0.2 - 0.2) = (-0.2 - 0.2)
0.5k = -0.4
To get k by itself, we must divide both sides by 0.5.
(0.5k / 0.5) = (-0.4 / 0.5)
k = -0.8
Isaiah earns $60 per week mowing lawns in the summer and shoveling driveways in the winter. He invested $220 in equipment. How long will it take him to earn $860? Find the equation and solve.
Answers
Answer:
18 weeks
Step-by-step explanation:
Create an equation where x is the number of weeks he works
60x - 220 will represent his profit, since he gets $60 a week but spent $220 in equipment.
Set this equal to 860, then solve for x, to find when he will earn $860
60x - 220 = 860
60x = 1080
x = 18
So, it will take him 18 weeks to earn $860
what is the answer to this 5(a+b)-a-b
Answers
Answer: 4a + 4b
Step-by-step explanation: distribute the 5 and combine like terms. It would distribute to 5a + 5b -a -b which simplifies to 4a + 4b.
Answer:
4a + 4b
have a great day!!
The diameter of a circle is 4 ft. Find its area to the nearest tenth.
Answers
Answer:
.09ft^2
Step-by-step explanation:
Answer:
12.6 ft^2
Step-by-step explanation:
90 out of 120 students like pizza. what percent of students did not like pizza?
Answers
Answer:
25%
Step-by-step explanation:
90/120=0.75
1-0.75=0.25
0.25x100= 25%
Is the following shape a square? How do you
know?
Answers
Answer:
B
Step-by-step explanation:
Answer:
no the sides are not congruent aka B
Step-by-step explanation:
The reading levels of a random sample of elementary students are represented by the dot plot.
Which decimal is the best approximation of the mean reading level for this group of students?
Select one:
2.7
1.5
2.3
1.9
Answers
Step by step example
I NEED THE ANSWER ASAP PLEASE
A small dog gets fed 3/4 cups of dog food twice a day. Using d for the number of days and f for the amount of food in cups, write an equation relating the variables. Use the equation to find how many days a large bag of dog food will last if it contains 210 cups of food.
Answers
Answer:
f=1.5⋅d or equivalent. The bag will last 140 days since 210÷1.5=140.
Step-by-step explanation:
Jocelyn estimates that a piece of wood measures 5.5cm. If it actually measures 5.62 cm, what is the percent error of Jocelyn’s estimate?
Answers
Answer:
2.14% error
Step-by-step explanation:
Use the percent error formula:
| (observed - expected) / expected | x 100
Plug in the observed and expected values:
| (observed - expected) / expected | x 100
| (5.5 - 5.62) / 5.62 | x 100
Calculate:
= 2.14% error
So, the percent error of Jocelyn's estimate is 2.14%
Rex puts $5,000 in a savings account with a simple
interest rate of 2.5%. How much interest does Rex
carn after 2 year's
Answers
Answer:
Rex earns $250 in interest after 2 years.
Step-by-step explanation:
Aubrey finished 2/9 of a project on Monday and 1/4 of the project of Tuesday. How much of the project has Aubrey completed?
Answers
Answer:
17/36
Step-by-step explanation:
We have to find a common denominator, so the first common denominator for 4 and 9 is 36. 9x4=36, so we multiply 2 by 4, which equals 8. 4x9-36, so we multiply the 1 by 9, and get 9. Then we add the numerators, 8 and 9, and get 17. So it's 17/36
what is 4h divided by 5?
Answers
5.30085603 × 10-34 m2 kg / s
Answer:
5.30085603 × 10-34 m2 kg / s
Step-by-step explanation:
calcule o valor x na equação do 1° grau: 16x-21=x+9
Answers
Answer:
16x-21=x+9
15x=30
x=2
eu acho que e nao sei mais o outro cara respondeu ali
Step-by-step explanation:
A price used to be £40, but is now £50.
What is the percentage increase?
Answers
Answer:
25%
Step-by-step explanation:
MP= 40
SP= 50
Change(increase) = 10
Change (increase) precentage = 10 / 40 x 100 = 25%
I hope im right!!
Answer:
25 percent
Step-by-step explanation:
£40 is the old price and £50 is the new price. In this case we have a positive change (increase) of 25 percent because the new value is greater than the old price.
Hope it helps
Please mark me as the brainliest
Thank you
What is the name of the circle that has radius ?
A
B
C
Answers
HELP!!! pls with this question !
Answers
Answer:
B
Step-by-step explanation:
the graph should start at negative five not four
An artist makes paperweights in the shape of square pyramids. The paperweights are filled with yellow sand. How much sand does the artist need to fill this paperweight?
Answers
Answer:
Step-by-step explanation:
-8(5m-7.4)
NEED ASAP
Answers
Answer:
-40m = 59.2
Step-by-step explanation:
simplify
Answer:
-40m + 59.2
Step-by-step explanation:
Distribute
-40m + 59.2
If you're solving for m then set the equation equal to 0 and solve.
-40m + 59.2 = 0
-40m = -59.2
m = 37/25
Item 15 Fill in the blank so that the ordered pair is a solution of y=12x+2. ( , 14)
Answers
Answer:
(1, 14)
Step-by-step explanation:
If you substitute the 14 in;
14 = 12x+2
-2 -2
12 = 12x
/12 /12
1 = x
does anyone know this ?
Answers
Answer:
an = 24(2/3) - n
Step-by-step explanation:
please help asap.....
Answers
Answer:
B
Step-by-step explanation:
As we know when factoring in complete from when it is given to us like this we erase one of the double terms, in this case is x+9 so after erased, it is
5x-7(x+9)
which basically is (5x-7)(x+9)
So that is the answer, thank you .
Answer:
(x=9)x (5x-7)
Step-by-step explanation:
There are 10 cards. Each card has one number between 1 and 10, so that every number from 1 to 10 appears once.
In which distributions does the variable X have a binomial distribution?
Select each correct answer.
When a card is chosen at random without replacement three times, X is the number of times an even number is chosen.
When a card is chosen at random with replacement multiple times, X is the number of times a card is chosen until a 5 is chosen.
When a card is chosen at random with replacement five times, X is the number of times a prime number is chosen.
When a card is chosen at random with replacement six times, X is the number of times a 3 is chosen.
Answers
Answer:
Hence , the answer is A and D .
Answer:
the first one and last one is the correct answer
Step-by-step explanation:
I only have 70 pointsssssssss
Answers
Answer:
5
Step-by-step explanation:
The equation given is put in slope intercept form
y = mx + b
where m = slope and b = y intercept
the number before the x represents the slope (m) , Because 5 is the number before the x, 5 is the slope
Answer:
5
Step-by-step explanation:
Question 1
(n - 3)(2n + 6)
18n2 - 45n + 25
Answers
18n2-45n+25
8n-18n2-45n+25
8n-18n2
8-45n=37
37+25=62
Answer:
36n^4−324n^2−45n+25
Step-by-step explanation:
please I need your help
Answers
Answer:
the volume would change since the object is heavier
Step-by-step explanation:
I can't see other steps and the more the mass and the area of the object the more volume ots take up
Answer: Increasing and decreasing the mass of a substance will also effect the volume and it will increase and decrease the volume whether the mass is increased or decreased
Step-by-step explanation:
which expression is equivalent to the expression shown below? -1/2(-3/2x+6x+1)-3x
Answers
Answer:
3 2 − 6 − 1
2
− 3
Step-by-step explanation: