Answer:
Step-by-step explanation:
We know that the system of equations
a
1
x+b
1
y=c
1
a
2
x+b
2
y=c
2
has infinitely many solutions, if
a
2
a
1
=
b
2
b
1
=
c
2
c
1
Here, a
1
=2,b
1
=3,c
1
=4,a
2
=k+2,b
2
=6,c
2
=3k+2.
Therefore, the given system of equations will have infinitely many solutions, if
k+2
2
=
6
3
=
3k+2
4
⇒
k+2
2
=
6
3
and
6
3
=
3k+2
4
⇒
k+2
2
=
2
1
and
2
1
=
3k+2
4
⇒k+2=4 and 3k+2=8
⇒k=2 and k=2
⇒k=2
Hence, the given system of equations will have infinitely many solutions, if k=2.
en un restaurante se usan 70 gramos por cada porción de arroz por persona.Si un día se preparan 4760 gramos de arroz ¿cuántas porciones se obtendrán?
Queremos saber cuantas porciones de arroz se preparan dado que conocemos cuantos gramos de arroz se utilizan.
Se prepararon 68 porciones.
Lo que sabemos en principio es que, por cada porción de arroz, se necesitan 70 gramos de arroz.
Sabemos que en total se utilizan 4,760 gramos de arroz. Para saber cuantas porciones se prepararon, hay que tomar el cociente entre la cantidad total utilizada y lo que se usa para cada porción.
Esto nos da:
4,760g/70g = 68
Es decir, se prepararon 68 porciones.
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Hello. . .
I need help please. . .
answers/w explanation. ✅
Nonsense answers, or answers that's not the question I ask for will be reported.
Answer:
x = 1 , y = 4
Step-by-step explanation:
I am assuming you're looking for what x and y are? If so, then we know that
DC and AB equal each other, so
4x + y = 8
CB and AD equal each other, so
2x + y = 6
We have two equations that cannot be solved on their own, so we must solve them as a system of equations. One process to solve is elimination.
4x + y = 8
2x + y = 6
we can multiply the second equation all by -1 to make the y's cancel out and give us x. so,
4x + y = 8
-1(2x + y) = 6
4x + y = 8
-2x -y = -6
now solve them vertically. we get:
2x = 2
and so x = 1.
Now that we found x, we must find y. Using any of the two equations froom above, we can substitue our x value of 1 into it to find y. I will use the first one.
4x + y = 8
4(1) + y = 8
4 + y = 8
y = 8 - 4
y = 4
so our x is 1 and y is 4.
hope this helps! (:
A lab technician has 40 gallons of a 15% iodine solution. How many
gallons of a 40% iodine solution must he add to make a 20% iodine solution?
Please show work!!
The quantity of a 40% iodine solution that must be added to 40 gallons of a 15% iodine solution to make a 20% iodine solution is: 10 gallons.
According to the question;
We are required to determine how many gallons of a 40% iodine solution must he add to make a 20% iodine solution.Let gallons of a 40% iodine solution to be added be; x gallons.
Therefore, the total gallons of a 20% iodine solution obtained is; (40+x) gallons.
By mass balance of iodine in each solution;
(15% of 40) + (40% of x) = (20% of (40 + x))(0.15 × 40) + 0.4x = 0.2x + 80.2x = 2x = 10 gallons.In essence; 10 gallons of a 40% iodine solution must be added to make a 20% iodine solution.
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If y=6 when x=2 over 3 find x when y=12
Answer:
4/3 or 1 1/3
Step-by-step explanation:
So if y = 6, when x = 2/3. Then, x would equal 1 and 1/3, because 12 is twice the amount of 6, so you'd also multiply 2/3 by 2.
(To multiply a whole number by a fraction, first multiply the whole number by the numerator and then divide that by the denominator. For example: 2 × 2 = 4, since you can't really divide 4 by 3 it would stay as is, but you can turn it to a mixed number. 4/3 is the same as 1 whole and an extra 1/3, or in other words 1 1/3).
Hope this helped :)
Help help help help help help help help help
Answer:
subtract 20 from both sides
Step-by-step explanation:
1. To find the answer, let's actually try solving the equation first and find the 2nd step.
2. (Solving)
Step 1: Distribute 2 to each term.
[tex](2)(x)+(2)(10)=60[/tex] [tex]2x + 20 = 60[/tex]Step 2: Subtract 20 from both sides.
[tex]2x + 20 - 20 = 60 - 20[/tex] [tex]2x = 40[/tex]3. Since we got that the second step was "subtract 20 from both sides," the answer is subtract 20 from both sides.
Activity:theresa's mother ask her to buy dressed chicken if a kilo of dressed chick cost
Step-by-step explanation:
450/180= 2.5 kilos
it is a one to one relationship
f(x)=x/180
where x is the amount given to her
Read the statement below and then select the idea that can be inferred from the statement.
Toxicity is high in cities. HELP FASSSSSSSST!!!!!
Environmental scientists help keep the air safe.
Temple University is near Philadelphia.
There is some lead in drinking water.
There are more factories in the city than in the country.
Ground soil can become poisoned with lead.
Answer: I would say 4
Step-by-step explanation:
Answer:
There are more factories in the city than in the country.
Step-by-step explanation:
Hope this helps!
Question number eight.
Answer:
true
Step-by-step explanation:
a to there powe8 and a to the power1
PLEASE PLEASE PLEASEEE HELP ILL GIVE U 50 POINTS AND BRAINLIEST :D
Answer:
See belowStep-by-step explanation:
#22Find the difference:
6.48×10⁷ - 2.15×10⁷ = (6.48 - 2.15)×10⁷ = 4.33×10⁷ people#23Find the ratio:
2.15×10⁷ / 2.95×10⁶ = 21.5/2.95 = 7.28 people / mi²#24Find the ratio:
1.3×10⁹ / 6.48×10⁷ = 130/6.48 = 20 timesProfit and loss. Help plz
Answer:
351 minus 316 I think
Step-by-step explanation:
okay so you will do 351 minus 316 and ur answer is 35 so her profit is 35 dollars also known as 35$ I hope this helped!!
Name the part of AKTH.
TS is a(n) [blank].
PLEASE PLEASE HELP !!!
Answer:
I'm pretty sure that's an angle.
Step-by-step explanation:
3x - 5y = 4, -2x + 6y = 18 (system of equations)
Answer:
(x, y) = (57/4, 31/4)
Step-by-step explanation:
-2x + 6y = 18
-2x = 18 - 6y
x = -9 + 3y
3(-9 + 3y) - 5y = 4
-27 + 9y - 5y = 4
4y = 31
y = 31/4
x = -9 + 3(31/4) = 57/4
Answer:
Step-by-step explanation:
-5y=4-3x
y=(4/-5)-(3/-5x)
2x+6y=18
6y=18-2x
y=18/6-(2/6x)
y=y
(4/-5)-(3/-5x)=18/6-(2/6x)
0.93x=3.8
x=3.8/0.93
x=4.09
sub 4.09 for the 3x-5y=4
which will give you y=1.65
sub 4.09 for -2x+6y=18
which will give you y=4.36
ANSWER THIS ASAP PLEASE !
Simple the answer is: n=14
क
Where on the coordinate plane is the point (-85, 52) located?
O Quadrant 4
O Quadrant 2
Quadrant 3
O Quadrant 1
Next >
Previous
Answer:
quadrant 2 you're welcome :-)
Answer:
Quadrant 2
Step-by-step explanation:
Since the x coordinate is negative, it must in quadrant 2 or 3
Since the y coordinate is positive, it must in quadrant 1 or 2
It must be in quadrant 2
Simplify the numerical expression:
(0.05)(-0.25)
A) -0.0125
B) 0.0125
C) -1.25
D) 1.25
Answer:
A) -0.0125
Step-by-step explanation:
-1/80 (fractional form)
Under which angle conditions could a triangle exist? Check all that apply.
3 acute angles
2 acute angles, 1 right angle
1 acute angle, 1 right angle, 1 obtuse angle
1 acute angle, 2 obtuse angles
2 acute angles, 1 obtuse angle under which angle conditions could a triangle exist? Check all that apply.
3 acute angles
2 acute angles, 1 right angle
1 acute angle, 1 right angle, 1 obtuse angle
1 acute angle, 2 obtuse angles
2 acute angles, 1 obtuse angle
Answer:
The answer in short is A,B and E
Step-by-step explanation:
Answer:
3 acute angles
2 acute angles, 1 right angle
2 acute angles, 1 obtuse angle
Step-by-step explanation:
What is 45% of 345? Please help me I’m failing math
Answer:
155.25
Step-by-step explanation:
Answer:
155.25
Step-by-step explanation:
Since 45% is equal to 0.45, simply multiply 0.45 x 345 and youll get 155.25
3x - 5y = 4
-2x + 6y = 18
Answer:
From 1st eqn .,
3x=4+5y
X=4+5y/3
From 2nd eqn ..,
-2x+6y=18
-2(4+5y/3)+6y=18
-8+10y/3 +6y=18
-8+10y+18y/3=18
-8+28y/3=18
-8+28y=54
28y=54+8
y=62/28
y=31/14
Therefore the value of y is 31/14
Again,
Putting the value of y in ..
X=4+5y/3
=(4+5*31/14)/3
=(211/14)/3
=211/42
Step-by-step explanation:
So the value of X and y is 31/14 &211/42 respectively.
Plz mark me brainest .
Answer:
x=14:25;convert to whole number 14:y=7:75; convert to whole number is 7
Step-by-step explanation:
using determiner method {x=3and-2;y=5and6}=4and18; solution cross multiple 3×6-5×6=general determiner is 28; to solve for x exchange for the number for x with the number outside which is 4;18
I don't understand this question can someone help me with this please, please explain!! and thank you for the help!! If u dont know try your best :D
Answer for 33 = 1, 3, 11, 33.
This is because all of those numbers divide into 33 evenly / are factors of 33.
Answer for 93 = 1, 3, 31, 93
This is because all of those numbers divide into 93 evenly / are factors of 93.
Answer:
1) composite: 1, 3 , 11 , 33
2) composite 1, 3, 31, 93
Step-by-step explanation:
1) We know that 33 is divisible by 3 because the whole value is equal to 6, and the last digit is a 3.
2) We know that 93 is divisible by 3 because the last digit was 3, and all of the place values added up to 12, which is also divisible by 3.
-kiniwih426
I WILL GIVE BRAINLIEST. PLEASE ANSWER ILL GIVE A LOT OF POINTS
To graph a straight line only 2 points are required
although 3 points are better (in case of error with other 2 .)
To find the y-intercept let x = 0 : hence y = - 5 ie (0 , - 5 )
To find the x-intercept let y = 0 : hence -x - 5 = 0 so x = - 5
ie ( - 5 , 0 )
These 2 points will allow the line to be drawn but a 3rd
is preferable. Choose any value for x and evaluate y.
choose x = 2 : then y = - 2 - 5 = - 7 ie (2 , - 7 )
Plot these 3 points: (0 , - 5 ) , (- 5 , 0 ) and (2 , - 7 ) and
draw a straight line through them .
Here is the graph of y = - x - 5
graph{-x-5 [-20, 20, -10, 10]}
Answer:
Y=3x-5
Step-by-step explanation:
According to her running log, Ariana averaged 4 miles per week last month and 75% less this month. How much did she average this month?
Answer:
She averaged 3 miles per week this month.
Step-by-step explanation:
You just take 75% of 4 and get 3.
Use simple interest to find the ending balance
1) a supermarket sells articles during the festival seasons with a 10% discount. find the new price of the following articles.
i) A CFL bulb if the marked price is Rs. 280
ii) A bunion if the marked price is Rs. 650.
iii) A gas cooker if the marked price is Rs. 7500
Answer:
252, 585, 6750
Step-by-step explanation:
We have to think that the regular price represents 100% and we need 10 of 10% to make an 100%. So if we divide the regular price by 10 will get our 10%.
i) A CFL bulb if the marked price is Rs. 280
10 % of 280 is 280/10 = 28
discounted price is 280 -28 = 252
ii) A bunion if the marked price is Rs. 650.
10 % of 650 is 650/10 = 65
discounted price is 650 -65 = 585
iii) A gas cooker if the marked price is Rs. 7500
10 % of 7500 is 7500/10 = 750
discounted price is 7500 -750 = 6750
Darren made strawberry jam and raspberry jam. He made enough strawberry jam to fill 3 3/8 jars. If he made 3 5/6 times as much raspberry jam as strawberry jam, how many jars will the raspberry jam fill? Write your answer as mixed number
Answer:
Harry would have made 1 and 1/2 jars of raspberry jam
Step-by-step explanation:
Hope this helps
Raspberry jam can fill [tex]12\frac{15}{16}[/tex] jars when the quantity of raspberry jam is [tex]3\frac{5}{6}[/tex] times as strawberry jam .
Given, that strawberry jam has filled 3 3/8 jars.
Multiplication: It is the basic mathematical operation among division, addition and subtraction.
The number of jars of strawberry jam is [tex]3\frac{3}{8}[/tex] jars.
The number of jars of raspberry jam is [tex]3\frac{5}{6}[/tex] times of the number of jars of strawberry jam.
So,
[tex]3\frac{3}{8} \times 3\frac{5}{6}[/tex]
[tex]= \frac{27}{8} \times \frac{23}{6}\\ \\= 207/16\\\\= 12\frac{15}{16}[/tex]
The number of jars of raspberry jam is [tex]12\frac{15}{16}[/tex] .
Learn more about multiplication, here:
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Please help :)
40 percent of the leaves are still green. If there are 12,000 total leaves, how many are no longer green?
Answer: 7200
Step-by-step explanation:
40 percent of leaves are green so 60 percent of leaves are no longer green.
there are 12000 total leaves so [tex]\frac{60}{100}[/tex] × [tex]12000[/tex] = 7200
please give me a brainliest answer
Athena's credit card has an APR of 16.99%. If her current monthly balance, before interest, is
$1,567.32, what amount will she be charged for interest?
O $26.63
O $22.19
O $45.00
O $31.19
Which of the following equations have infinitely many solutions?
Choose all answers that apply:
A
- 10x - 10 = -10x + 10
B
10x - 10 = -10x - 10
C
- 10x - 10 = -10x - 10
D
10x – 10 = -10x + 10
Answer:
10
Step-by-step explanation:
that is the answer because its her choice
I need an answer and I’m offering a lot!!
Given: angle 8 and angle 6 are corresponding
angles. Identify the transversal.
someone buys a chair in sale for 435.60 dollars. its is a reduction of 12% from the the original price. what is the original price... the amswer is 495 dollars but i need someone to explain it
100%=(435.60÷88)x100
which is 495.
Answer:
Step-by-step explanation:
435,60:12%
last 2 guyss !!!! tysm
First one is a rotation 90° clockwise
Second one is B. 134°
Answer:
A 90° clockwise
B 134°
