can someone tell me the answers pls ill give brainlist and points i have to solve each system by substitution pls answer and if your not gonna help pls don’t type anything it wastes my points:/
Answers
Since we're given y, we can substitute y into the first euqation...
-2x+3(3x+4)=19
-2x+9x+12=19
7x=7
x=1
hope this helps :D brainliest pls
Related Questions
I need 5
This is the picture..
Answers
Answer:
What are the options?
CPCT?
The weight of 4 eggs is shown. Identify the constant of proportionality of total weight to number of
eggs.
The weight of 4 eggs is 188 g
Answers
Answer:
47g
Step-by-step explanation:
A store at the mall is having a sale of 30% off all coats, "c". The expression 0.7c describes the discounted price in dollars for a coat. Which expression also describes the discounted price in dollars, for a coat?
A. 0.7c
B. c - 0.7c
C. c - 0.3c
D. c - 0.3
Answers
Answer:
c
Step-by-step explanation:
If the number of bacteria in a colony doubles every 27 hours and there is currently a population of 2,000 bacteria, what will the population be 54 hours from now?
Answers
starts at 2,000
27 hours: 4,000
54 hours: 6,000
Gabe needs to cut an 8-foot piece of plywood into 16 equivalent pieces for a fence.
Answers
Answer:
0.5 ft or 6 in
Step-by-step explanation:
Simply do 8/16, each piece is half a foot (6 inches) long
Answer:
6 inches.
Step-by-step explanation:
First, we know that 8 feet is equal to 96 inches.
96/16 = 6.
So 6 inches per fence post.
Hope this helps!
Ellie bought 10 packages of cat food and 8 packages of dog food. Each package of cat food contained 9 cans, and each package of dog food contained 5 cans. How many more cans of cat food than dog food did Ellie buy?
Answers
10x9=90
8x5=40
90-40=50
Ms. Gonzales is investing $17000 at an annual interest rate of 6%
compounded continuously. How much money will be in the account after
16 years? Round your answer to the nearest hundredth (two decimal
places).
Answers
Answer:
$30444.41
Step-by-step explanation:
→ Work out compound interest
(100 + 6) ÷ 100 = 1.06
→ Multiply the amount by the money
17000 × 1.06
→ Find how many years it is for
17000 × 1.06¹⁰ = 30444.41
A bookcase contains these books. 36 cookbooks 17 autobiographies
39 novels 22 reference books One book is selected at random from the bookcase. Based on the information, which statement is true?
A The book is twice as likely to be a cookbook as a reference book.
B The book is just as likely to be a novel as it is to be an autobiography or a reference book.
C. The book is more likely to be a cookbook than a novel.
D. The item is half as likely to be a reference book as a novel.
Answers
Answer:
A
Step-by-step explanation:
Someone please help me, use a variable to represent the situation, and solve the equation using inverse operations.
The length of an average toucan is about two thirds the length of an average macaw. Toucans are
about 24 in. long.
Answers
Answer:
36 in
Step-by-step explanation:
T= toucan
M= macaw
T= 2/3M
T= 24
24= 2/3M
72=2M
36= M
Length of macaw be x
24=2/3(x)2x=72x=72/2x=36inPlease help fast!
Solve 2/3x-1/5>1
X>?
Answers
Answer:
x > 9/5
Step-by-step explanation:
2/3 x - 1/5 > 1
15 × 2/3x - 15 × 1/5 > 15 × 1
10x - 3 > 15
10x > 18
x > 18/10
x > 9/5
R and S represent positive integers on a number line
and R< S. Which of the following could be the
positions of R and S?
Answers
Answer:
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
S is greater than R and they say they are both postive so it has to be on the right side of zero on the number line
Can sides of a triangle have lengths 1, 13, and 14 ???
Answers
Answer: Yes it can!
Step-by-step explanation:
This is called a scalene triangle, where all 3 sides are different lengths.
Which number line shows the solution to the inequality 4x + 5 >9?
Answers
Answer:
C.
Step-by-step explanation:
Last night, Jasmine and her family went out for dinner. The questions below came up on their way to the restaurant or during the meal. Decide whether or not each question is a statistical question. Select all that apply.
●How far are we from the restaurant?
●How long will it be until we get there? ●Would you rather have burgers or pizza?
●How much should we leave for the tip? ●What was the most frequently ordered dish in the restaurant this evening?
●Did you like the pizza tonight?
●Which table's bill was the highest?
●How many people were sitting at each table this evening?
Answers
A statistical question is a question where the data collected can vary.
Ex. Statistical - "How old are the students in my class?" The data can vary based on which student you ask.
The following questions are statistical:
●Would you rather have burgers or pizza?
●How much should we leave for the tip?
●Did you like the pizza tonight?
●How many people were sitting at each table this evening?
These questions can vary based on who you ask or where you look
I hope this was helpful! =)
Pls give answers to these I will mark branliest
Answers
Answer:
I can answer the first 5 for you :)
1: 1,019,536
2: 892,850
3:20,215,692
4:274,728
5:227,376
Have a great day!!!!
What is the difference between the number of solutions for a two-step equation and for a two-step inequality
Answers
Answer:
A two-step equation is something like:
A*X + B = C
In this case, like in a linear equation, we have only one solution that can be found as:
A*X = C - B
X = (C - B)/A
In the case of a two-step inequality, we have something like:
A*X + B > C
Solving this we get;
A*X > C - B
X > (C - B)/A
In this case, any value of X that is larger than (C - B)/A is a solution, so in this case, we have infinite solutions.
That is the difference between the number of solutions for each case, in a two-step equation we have only one, while in the case of the inequality we have infinite.
A large bag of marbles contains red (R) and blue (B) marbles. Marbles are pulled one at a time, recorded, and placed back in the bag. Estimate the percentage of blue marbles in the bag.
R R R B R R R R R R B R R R B
A. 60%
B. 80%
C. 25%
D. 20%
Answers
Answer: 20%
Step-by-step explanation:
3/15= 1/5= 20%
Which of the following are parallel to
y = 3x – 2
(Choose all that apply)
y = 5 – 3x
Y= 3x
y = 3x – 1
y = 3x – 4
y = -3x
Answers
y = 3x - 1
y = 3x - 4
i’m pretty sure in order for lines to be parallel, they have to have the same slope but different y- intercepts
Answer:
y=3x-1,y=3x-4
Step-by-step explanation:
y=mx+c
where is gradient, parallel lines have same gradient
y=5-3x
=-3x+5
m=-3
y=-3x
m=-3
y=3x-1
m=3 ,the gradient is equal to the original equation
y=3x-4
m=3,the gradient also equal to the given equation
Can anyone help me with #3 and #4 and #6 please I will give brainlist!!
Answers
Answer:
3. 15.02
4. 84.05
6. 4,301
Step-by-step explanation:
I'm not too sure how to explain this, but those are the answers.
A teacher is interested in students' opinions about an upcoming school dance. Which of the following techniques
uses systematic random sampling?
Survey the first 10 students who arrive.
Survey every 10th classroom as the teacher walks down the hallway.
Survey the 10th student arriving at school (with the number 10 being randomly chosen), then survey every 12th
student after that
O Survey the 10th student arriving at school (with the number 10 being randomly chosen), then survey every other
boy and every other girl after that.
Answers
Answer:
think its c but not sure
Step-by-step explanation:
because it repeats its self to get i sample
Answer and Step-by-step explanation: yes it's C i got it right so did the person above me
help I don't understand
Answers
Answer:
Sequence: Reflection over the y-axis, then 1 to the right and 2 down to get the triangle ABC to A'B'C.
Step-by-step explanation:
Have a nice day!
The number of guests, g, coming for dinner
is not 8
Answers
Answer:
g < 8
rip 5 days ago
3. Adam bought 3 pens and 4 pencils for $4.25. Lily bought 2 pens and 6 pencils for $4.50. How much is a pen? a pencil?
Answers
Let x = pen
Let y = pencil
3x + 4y = 4.25
2x + 6y = 4.50
Make both coefficients equal
(3x + 4y = 4.25) * 2
(2x + 6y = 4.50) * 3
6x + 8y = 8.5
6x + 18y = 13.5
Subtract both sides
-10y = -5, y = 0.50
3x + 4(0.50) = 4.25
3x + 2 = 4.25
3x = 2.25, x = 0.75
Pen = $0.75
Pencil = $0.50
helpppp needed
tysm for everyone helping btw :)
i put points at 35 xx
Answers
Answer:
10ft.
Step-by-step explanation:
1yd = 3ft.
3yd = 9ft. + 1ft= 10ft.
Answer:
I think the answer is 3.04800
or just 10ft.
There are 645 students at Tech Middle School, and
20% of the students are th graders, How rising
Students are 7th graders? ?
Answers
Answer:
.20
Step-by-step explanation:
The word percent literally means "Out of 100". With that being said, 20% can be written as a fraction, mixed number or whole number as follows: 1/5 (fraction), 20/100 (mixed number) or .20 (whole number).
If 25 percent of your classmates have cats, and your class has 20 students, how many students have cats? (I have to show my work)
Answers
Answer:
5 students.
Step-by-step explanation:
25% is a quarter of the amount, or 1/4. A quarter of 20 is 5, since 4 times 5 is 20. So 5 students have cats.
hello please help i’ll give brainliest
Answers
5k(k-9)=0 solve for k
Answers
Step-by-step explanation:
5k²-45= 0
5k²= 0 +45
k²= 45/5
k²= 9
or
k = 9/2 = 4.5
A box contains 2 red marbles, 3 white marbles, 4 green marbles, and 1 blue marble find the probability of selecting a white marble in the first draw and a red marble in the second draw
Answers
Answer:
Answers
Selecting a green marble on the second
draw if the first marble is blue.
Answer:
Selecting a white marble on the first
draw and red marble on the second
draw.
Answer:
Selecting a red marbles on both draws.
Answer:
Selecting a red or white on the first
draw and green or blue on the second
draw.
Answer:
Selecting a white marble on the first
draw and a white or blue on the second
draw.
Step-by-step explanation:
Dillon deposited 3/4 of his paycheck
into the bank. The deposit slip shows how much he deposited.($46.50)
Write and solve an equation to find the amount of his
paycheck.
Equation:
Solution:
Answers
Answer:
His paycheck was $62.
Step-by-step explanation:
3/4 x = 46.5
x = 46.5 * 4/3
x = 62
Equation: 3/4 x = 46.5
Solution: x = 62