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:/

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

Pls give answers to these I will mark branliest

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?

Can sides of a triangle have lengths 1, 13, and 14 ???

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?

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).

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

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%

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)

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.

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

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:

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

help I don't understand​

Can anyone help me with #3 and #4 and #6 please I will give brainlist!!

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?​

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?

Which number line shows the solution to the inequality 4x + 5 >9?

hello please help i’ll give brainliest

Gabe needs to cut an 8-foot piece of plywood into 16 equivalent pieces for a fence.

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.

I need 5

This is the picture..

The number of guests, g, coming for dinner
is not 8

helpppp needed


tysm for everyone helping btw :)

i put points at 35 xx

Please help fast!

Solve 2/3x-1/5>1

X>?

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?​

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

5k(k-9)=0 solve for k

What is the difference between the number of solutions for a two-step equation and for a two-step inequality

There are 645 students at Tech Middle School, and
20% of the students are th graders, How rising
Students are 7th graders? ?

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.