Simultaneous equations:
1) 3x + 2y = 23
2x - y = 6
2) 3x - 3y = 9
2x + y = 12
3) 4x + 2y = 34
3x + y = 21
(if you could answer with workings out that would be great)
Answers
Answer:
1)x=5 y=4
2)y=2 x=5
3)y=12 x=3
Step-by-step explanation:
hope that helps!
Related Questions
the seventh grade math classes are going on a field trip. The field trip will cost $6 per student. write an expression to find the cost of the field trip all the students in 7th grade. what is the total cost is 150 students go on the trip?
Answers
Step-by-step explanation:
8zjia5aksoo999oiyj9999999999999999999999999
Answer: 150 x 6 = 900
Step-by-step explanation:
if there are 150 students going on the field trip, and it costs 6 dollars for each student, 150 x 6 would give you the total cost, which is 900 dollars
Solve the system by substitution.
x= -5y - 6
5x – 3y = -2
What’s is the solution?
Answers
The value of x is -1 and value of y is -1.
What is Equation?Two or more expressions with an Equal sign is called as Equation.
The given equations are
x+5y=-6...(1)
5x – 3y = -2...(2)
Multiply equation 1 with 5
5x+25y=-30..(3)
Subtract equation 2 and equation 3
5x-3y-5x-25y=-2+30
-28y=28
Divide both sides by 28
y=-1
Now plug in y value in equation 1
x=5-6
x=-1
Hence, the value of x is -1 and value of y is -1.
To learn more on Equation:
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Identify the slope, x-intercept, and y-intercept.
I 1.y=x+5
2. y = - 4x
3. -2x + 3y = 12
Answers
2.) slope is -4 and y intercept is 0 x intercept is 0
3.) slope is 2/3 and y intercept is 4 x intercept is -6
Hope this helps
Any languages have what some consider a significant limitation: they lack a gender-neutral third-person singular pronoun. When using a pronoun to refer to a person, speakers must either specify a gender or say something like "he or she." Not only can this be cumbersome, but it means that there is no good pronoun choice when a person's gender is unknown to the speaker. Sweden addressed this problem in 2015 by adding a new pronoun—hen—which refers to a person without specifying a male or female gender. Hen does not replace the Swedish pronouns han, meaning "he," or hon, meaning "she"; it simply adds another option. Thus, Swedes now have their choice of three,
Answers
Answer:
Its the answer where it says address I did it on ixl
Step-by-step explanation:
Can someone please helpppppppp
Answers
Answer:
first one
Step-by-step explanation:
hhhhjnbbbnhhh
Katrina is asked to simplify the expression Negative 3 a minus 4 b minus 2 (5 a minus 7 b).
She writes: Negative 3 a minus 4 b minus 2 (5 a minus 7 b) = negative 3 a minus 4 b minus 10 a + 14 b
Answers
Answer:
It's C
Distributive property
Step-by-step explanation:
(Solving equations by addition)
Can somebody plz help answer these questions like what to solve it. Thanks :D
WILL MARK BRAINLIEST WHOEVER ANSWERS FIRST
Answers
x = 6
2.) 4
3.) 5
4.) 7
5.) 5
A group of friends were working on a student film that had a budget of $1300. They used $546 of their budget on props. What percentage of their total budget did they spend on props?
Answers
Answer:
42% is the right answer
Step-by-step explanation:
Pam borrowed $0.45 from her friend Tina for five days to buy candy bars. Represent the amount that pam borrowed as the product of two rational numbers then determine how much pan owes her friend!!!!! PLEASE HELP IM GIVING 50 points
Answers
Answer:
2.25
Step-by-step explanation:
2.25 is a rational number sq root of 2.25 is = 1.5 and we can also write 1.5 in p/q form =15/10 so it is a rational number.
Draw a number line diagram and write an expression to represent this situation: “On Tuesday at lunchtime, it was 29° C. By sunset, the temperature had dropped to 16° C.
Answers
Answer:
not you cheating Maddison (its kaliya)
Step-by-step explanation:
but the answer is the temperature dropped 15.6 degrees from the high that day which was 8 degrees
so the sum is: 8-15.6= -7.6
And that means the low temperature on Tuesday night was - 7.6 degrees
Answer:
Step-by-step explanation:
but the answer is the temperature dropped 15.6 degrees from the high that day which was 8 degrees
so the sum is: 8-15.6= -7.6
And that means the low temperature on Tuesday night was - 7.6 degrees
Step-by-step explanation:
xkjs
5/4 - 1/4 what is it!!!
Answers
Answer:
4/4 or 1
Step-by-step explanation:
Answer:
It's 1
Step-by-step explanation:
a right rectangular prism has a square base with a side length of 3 inches. the height of the prism is 81/4 inches. what is the volume of the prism
Answers
Answer:60 3/4
Step-by-step explanation:you multiply 81/4 times 3 and get 243/4 so you divide 243 divided by 4 and the answer is 60 3/4
If the time is 2:12 pm then how many minutes ago did the time turn to noon
Answers
Answer:
132min (mark brainliest?)
Step-by-step explanation:
noon = 12pm
2:12pm - 12pm = 2 hours and 12 min
2 hours *( 60 min) = 120 min
120 min + 12 min = 132 min
Solve:
-28.5 -0.356 =
Answers
Answer:
-28.856
Step-by-step explanation:
Solve the equation 30t-4=1 for t.
Answers
Answer
[tex]1/6[/tex]
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
The answer is A
P.S i am emo
help!! -4x=36 and pls show the work! thank youu
Answers
Answer:
x=-9
Step-by-step explanation:
x=36/-4=-9
Answer:
-9
Step-by-step explanation:
-4x=36
36/-4=-9
x = -9
-4(-9)=36
Hello!! Please help me!!!! I will give you brainleist if I can!! Thank you!!! ❤ and you can flip the image!! ✨❤
Answers
Answer: Your answer will be Option three
Step-by-step explanation: Because she ate 1/3 the rest of the cake.
Have a brilliant day- your friend Lily ^_^
Help need answers quick (unprofessional behavior and wrong answers will get reported)
Answers
Answer:
step 2 is the answer. when you start the question it's already in pemdas order. 48÷6 equals 8 then multiply it by the other 8 then you can add that quotient to the 10 which is 74 then subtract it by 7 and you get 67. step 2 goes the wrong way and ads the 8 with the 10 before multiplying the 8 by the 8 making everything go in wrong turns.
There is a central angle of 90 degrees. What fraction is the sector made by that central angle of the whole circle?
Answers
Answer:
270
Step-by-step explanation:
[tex]360 - 90 = 270[/tex]
Help what do I fill in!?!
Answers
Answer:
6 AND 8
Step-by-step explanation:
[tex]\sqrt{\frac{2}{2}[/tex]
Answers
Square root of 1 is 1
The following table contains the rate of commission, number of items sold,
and cost of each item for four different salespeople.
Salesperson
Rate of
commision
Number of
items sold
Cost of
each item
Felix
7.25%
9
$60
Helen
7.50%
12
$50
Reid
8.25%
10
$40
Sidney
7.75%
6
$90
Assuming that each salesperson earned commission on all items he or she
sold, who earned the most in commission?
Answers
Answer:
Helen
Step-by-step explanation:
Just did test
Both Felix and Sidney earned the same amount of commission, which is $39.15.
Helen earned the most commission, which is $45.00.
What is an expression?An expression contains one or more terms with addition, subtraction, multiplication, and division.
We always combine the like terms in an expression when we simplify.
We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.
Example:
1 + 3x + 4y = 7 is an expression.com
3 + 4 is an expression.
2 x 4 + 6 x 7 – 9 is an expression.
33 + 77 – 88 is an expression.
We have,
To calculate the commission earned by each salesperson, we need to multiply the rate of commission by the total sales amount.
The total sales amount is the product of the number of items sold and the cost of each item.
For Felix:
Commission = (Rate of commission) x (Total sales amount)
= 7.25% x (9 x $60)
= $39.15
For Helen:
Commission = (Rate of commission) x (Total sales amount)
= 7.50% x (12 x $50)
= $45.00
For Reid:
Commission = (Rate of commission) x (Total sales amount)
= 8.25% x (10 x $40)
= $33.00
For Sidney:
Commission = (Rate of commission) x (Total sales amount)
= 7.75% x (6 x $90)
= $39.15
Therefore,
Both Felix and Sidney earned the same amount of commission, which is $39.15.
Helen earned the most commission, which is $45.00.
Learn more about expressions here:
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Emily deposited $5,000 into a savings account 6 years ago. The simple interest rate is 3%. How much money did Emily earn in interest? *
Answers
Answer:
$900
Step-by-step explanation:
First, converting R percent to r a decimal
r = R/100 = 3%/100 = 0.03 per year,
then, solving our equation
I = 5000 × 0.03 × 6 = 900
I = $ 900.00
The simple interest accumulated
on a principal of $ 5,000.00
at a rate of 3% per year
for 6 years is $ 900.00.
BRAINLISEST TO FIRST CORRECT ANSWER
Raul bought enough flour to make four loaves of bread. If he uses the same amount of flour to make rolls instead, how many rolls can Raul make?
recipe - amount of flour needed
bread - 1 1/2 cups per loaf
muffin - 1/3 cup per muffin
rolls - 1/4 cup per roll
Answers
Austin has an action figure collection of 500 action figures. He keeps 435 of the action figures on his wall. What percentage of Austin's action figure collection does he keep on his wall?
Answers
Answer:
87%
Step-by-step explanation:
First do part over whole which is 435over500 then multiply part by 100 and them divide that answer by the whole. Leading you to 87%
Can somebody help me with this question.
Answers
1 15/8+ 1 10/8=
help me
Answers
Answer:
5 1/8
Step-by-step explanation:
1 [tex]\frac{15}{8}[/tex]
+ 1 [tex]\frac{10}{8}[/tex]
2 [tex]\frac{25}{8}[/tex] = 2 + 3 [tex]\frac{1}{8}[/tex] = 5 1/8
Question 1 ?
Question 2 ?
Question 3 ?
Question 4 ?
Question 5 ?
Question 6 ?
Answers
2. 39
3. 90
4. 33
5. 33
6. 22
Answer: 1. 51 2. 39 3. 90 4. 33 5. 33 6. 22
Step-by-step explanation: the person above me answers are correct i just put my answers cause i just wasted my time doing them so i thought to just put my answer too.
determine if the point (4,7) is a solution to the system of equations shown below. Justify your yes/no answer.
y=2x-1 and y=1/2x+5
Answers
Answer:
The point (4,7) is a solution to the system of equations.
Please also check the attached graph.
Step-by-step explanation:
Given the system of equations
[tex]y=2x-1[/tex]
[tex]y=\frac{1}{2}x+5[/tex]
Let us solve the system of equations using the elimination method
[tex]\begin{bmatrix}y=2x-1\\ y=\frac{1}{2}x+5\end{bmatrix}[/tex]
Arrange equation variables for elimination
[tex]\begin{bmatrix}y-2x=-1\\ y-\frac{1}{2}x=5\end{bmatrix}[/tex]
subtracting the equations
[tex]y-\frac{1}{2}x=5[/tex]
[tex]-[/tex]
[tex]\underline{y-2x=-1}[/tex]
[tex]\frac{3}{2}x=6[/tex]
now solving [tex]\frac{3}{2}x=6[/tex] for x
[tex]\frac{3}{2}x=6[/tex]
Multiply both sides by 2
[tex]2\cdot \frac{3}{2}x=6\cdot \:2[/tex]
Simplify
[tex]3x=12[/tex]
Divide both sides by 3
[tex]\frac{3x}{3}=\frac{12}{3}[/tex]
Simplify
[tex]x=4[/tex]
For [tex]y-2x=-1[/tex] plug in x = 4
[tex]y-2\cdot \:4=-1[/tex]
[tex]y-8=-1[/tex]
Add 8 to both sides
[tex]y-8+8=-1+8[/tex]
Simplify
[tex]y=7[/tex]
Therefore, the solution to the system of equations is:
(x, y) = (4, 7)
Hence, the point (4,7) is a solution to the system of equations.
Please also check the attached graph.
Simplify 5x ax 5 x a
Answers
Answer:2.a
Step-by-step explanation: