Solve the system by substitution.
1. y= 7x
x − 7y = -48

Answers

Answer 1

Screen Shot of answer

source:Mathwa.y

Solve The System By Substitution. 1. Y= 7x X 7y = -48
Answer 2

Answer:

x=1

y=7

Explaination:

y=7x---------(1)* *First equation

x-7y=(-48)----(2)* *Second equation

Put (1)* into y on (2)*

x-7(7x)=(-48)

x-49x=(-48)

-48x=(-48)

48=48x

48÷48=x

1=x or x=1--------(3)* *Third equation

Put (3)* into (1)*

y=7(1)

y=7

feel free to ask me


Related Questions

Multiply. Write your answer as a fraction in simplest form.

−1(45)=

NO LINKS PLEASE !!!!!!!!!!!!!!!!!!
if you do i will report your answer

Answers

Answer:

no worries :)

Step-by-step explanation:

Answer:-45

Step-by-step explanation:

Martha ordered 3 cheesecakes. She will cut each cake into fourths. How many pieces of cake will she have?

Answers

12 because there are 3 cakes and cutting each into 4..... 3x4=12

You put $200 in a savings account. The account earns 2% simple interest
per year. What is the interest earned after 5 years? (*hint: just the
interest, NOT the total)
Use the formula I = p.r.t

Answers

Answer:

interest total after 5 years is $20.82

Step-by-step explanation:

Find 2x^3-x^3+4x+7 divided by x+3

Answers

Answer:

(x^3+4x+7)/(x+3)

Step-by-step explanation:

you just combine the like terms on the top and put it in a fraction. let me know if that helped.

PT=y,TR=x+3,QT=2y,TS=3x-1 I'm confused and u really need help. My teacher isn't the greatest and wasn't much help.

Answers

Answer:

y=10, x=7

Step-by-step explanation:

Since the diagonals of a parallelogram bisect each other, PT should be equal to TR and QT should be equal to TS. So, y=x+3 and 2y=3x-1. Multiplying the first equation by 3 gives you 3y=3x+9. Using elimination to subtract these two equations gives you y=10. And since y=x+3, substitute y=10 there. 10=x+3, x=7.

*update* Don't answer, I solved it already.
1) Given the equation y = 35(0.57)^x

a) Does this equation represent growth or decay? ______Decay_________

b) What is the rate of growth or decay? _______43%________ (in percent)
1-0.57=0.43 100x0.43=43%
c) What is the initial value? _____35________

d) Evaluate for x = 3
y=(35)(0.57)^(3)
=(35)(0.185193)
=6.481755

Answers

Answer:

1) Given the equation y = 35(0.57)^x

a) Does this equation represent growth or decay? ______Decay_________

b) What is the rate of growth or decay? _______43%________

1-0.57=0.43 100x0.43=43%

c) What is the initial value? _____35________

d) Evaluate for x = 3

y=(35)(0.57)^(3)

=(35)(0.185193)

=6.481755

Write an expression showing the sum of a number H and a number W minus 11​

Answers

Answer:

h+w-11

Step-by-step explanation:

Answer:

H+W-11

Step-by-step explanation:

The speed of a truck, s, must be no less than 34 miles per hour.

Answers

Answer:

s = ≥34

Step-by-step explanation:

The speed of the  truck, s, must be no less than 34 miles per hour

is s ≥ 34.

What are inequalities and their types?

Inequality is a relation that compares two numbers or other mathematical expressions in an unequal way.

The symbol a < b indicates that a is smaller than b.

When a > b is used, it indicates that a is bigger than b.

a is less than or equal to b when a notation like a ≤ b.

a is bigger or equal value of an is indicated by the notation a ≥ b.

Given, The speed of a truck, s, must be no less than 34 miles per hour.

Therefore, The speed of the truck must be greater than or equal to 34 miles per hour.

So, The inequality that represents this context is,

s ≥ 34.

learn more about inequalities here :

https://brainly.com/question/28823603

#SPJ2

I’m about to spam questions if you can answer them please do .

Answers

Answer:

id say anything between 15 to 30 i dont have the stuff i need to answer this 100% accurately

Step-by-step explanation:

Answer:

50

Step-by-step explanation:

90 plus 40 ,then you subtract it from 180

A man wants to build around water fountain with diameter, d = 11.28 feet. The man is trying to put up a fence around the build with some wire. What is the length of the wire that the man needs to complete the task?


Answers

Answer:

35.44

Step-by-step explanation:

2 times pi times radius.

Ayudapor favor con estas materia

Answers

Answer:

Step-by-step explanation: 27 - = 8.7 9 x = 1 x 5

angle A and angle B are complementary angles. If m angle A = (6x – 8)° and m
angle B = (5x + 21)°, then find the measure of angle B.

Answers

Answer: B = 56 degrees

Step-by-step explanation: Complementary angles add up 90 degrees. So we will set both of the equations equal to 90 degrees and then solve from there.

6x+8+5x+21=90

1. Simplify 5x + 6x and 21 - 8

11x+13=90

 

2. Subtract 13 from both sides.

11x=90-13

 

3. Simplify 90-13 to 77.

11x=77  

4. Divide both sides by 11.

x = 77/11

​    

5. Simplify 77/11 to 7

 x=7

Now we have to take the value of x and substitute it back into B = (5x+21)

1. Substitute

B = (5(7)+21)

B = 35 +21

B = 56

HOPE THIS HELPS :)


A survey taken by 1,000 students at a school asked whether they played school sports. The table below
summarizes all 1,000 responses from the students surveyed.
Males
Females
312
220
Play a school sport
Do not play a school sport
?
216
How many of the males surveyed responded that they do not play a school sport?
252
688
109
468

Answers

Answer is 252 have a good day

Hey guys!
Please help me out with these questions. Tmrw I have an exam... Will mark BRAINILIEST for the answer explaining proper steps. If I sound rude, please forgive me, I'm just stressed out.....

Thanks ​

Answers

Answer:

Step-by-step explanation:

Write an expression, in its simplest form, for the volume of this cuboid

Answers

Answer:

[tex]V=10x^2+35x+15[/tex]

Step-by-step explanation:

Given that,

Length = (2x+1)

Width = (x+3)

Height = 5

We need to find an expression for the volume of this cuboid . The formula for the volume of cuboid is given by :

[tex]V=lbh[/tex]

So,

[tex]V=(2x+1)\times (x+3)\times 5\\\\=(2x+1)\times (5x+15)\\\\=10x^2+30x+5x+15\\\\=10x^2+35x+15[/tex]

So, the volume of this cuboid is equal to [tex]10x^2+35x+15[/tex].

pls pls pls help me giving brainlist

Answers

Answer:

The first one is a similie

second is a metaphor

Step-by-step explanation:

like ice means like a hatred glare

the hug is a a good thing thats

happens on a bad dat

Answer:

simile

the referee was angry

metaphor

they have a lot of love for each other

Step-by-step explanation:

please mark me branliest

A veterinarian office conducted a survey of the weight of dogs that came in for physicals. 55, 37, 8, 50, 60, 50, 48 Find the outlier:​

Answers

Answer:

8

Step-by-step explanation:

The outlier is the puece of data that is very different from the rest. If all of the numbers in this data were to be put on some sort of visualization, most of the numbers would be in a clump, while the 8 would be far from the clump.

the answer is 8 because when you plot the data it is the one really far away that skews the data

solve by substitution y=3x+5 and y=x+1

Answers

Answer:

x= -2 y= -1

Step-by-step explanation:

To solve by Substitution you would make this equation equal to each other x+1=3x+5 from there you would solve for x subtract x on both sides. and subtracting 5 from both sides 2x= -4 then divide by 2 to get x by itself x=-2 since we now found what the value of x is you can now plug in x into one of the origunal equations and get your answer for y which is y=-1

Jon is taking a 625 mile trip. On the first day, he drove 183 miles.

How many more miles does he have to drive?


Answers

Answer:

442

Step-by-step explanation:

625-183=442

The more miles he have to drive is 442miles.

We have given that,Jon is taking a 625 mile trip.On the first day, he drove 183 miles.

We have to find the how many more miles does he have to drive.

What is the formula for the total miles drive?

Total distace mile drove =mile drove first day+Remaining drove in miles

So we can write it as,

Total distance  miles-Miles drove first day= Remaining miles

Total distance=625

first day distance=183

Remaining distance

=625-183

=442

Therefore the remaining distance is 442miles.

To learn more about the distance visit:

https://brainly.com/question/23848540

Solve for x
(3x-15) & (2x+7)

Answers

Answer:

for the first one X=-5

for the second one it's a fraction so look at the picture

Find the lateral area and surface area of the following figure
Round to the nearest hundredth if necessary

Answers

Answer:

lateral surface area of cone =πrl=3×8.5π=80.11in²

total surface area of cone =πr(r+l)=π×3(3+8.5)=108.38in²

What should be done first to evaluate the expression?

6 + 8 ÷ 4 + (4 × 5)²

Answers

Do the parentheses first :) ʕ•ᴥ•ʔ

Answer:

First, follow the first step in PEMDAS so you would do the parenthesis first followed by exponents, multiplication, division, addition, then subtraction

Step-by-step explanation:

6 + 8 ÷ 4 (4*5)^2

6 + 8 ÷ 4 + 20^2

6 + 8 ÷ 4 + 400

6 + 2 + 400

= 408

5. (5 points) You have a jar full of jelly beans. You will randomly pick 2 jelly beans without replacement.The probability that you choose 2 green jelly beans is 14/95 and the probability of drawing one green jelly been is 2/5 . what is the probability of picking a second green, given the first was green?

Answers

Answer:

7/19

Step-by-step explanation:

In order to find the probability that two events happen in a sequence you simply have to multiply the probability of each individual event together. Since the probability of the sequence is given to us as well as the probability of drawing the first green jelly bean, this means we need to divide the first probability by the probability of the sequence to get the probability of the second event. Basically, reversing the process. Dividing two fractions, we simply divide the numerators by each other and then the denominators by one another.

[tex]\frac{14 / 2}{95 / 5} = \frac{7}{19}[/tex]

Therefore, the probability of picking the second green jelly bean is 7/19

Help! The picture is with it to see the question

Answers

Answer:

8

Step-by-step explanation:

sqrt8*sqrt8 = sqrt8^2 = 8

At Mr. Clark's shop, his employees work 20 hours each week and
earn $7 per hour. He uses this expression to find the
total weekly payroll for n employees.
7. (20. n)
Which is an equivalent expression that can be used to find the
total weekly payroll?
B
A 7. (20 − n)
(7 • 20).
с 20 · (n + 7)
D (n + 20) • 7

Answers

Answer:

B if there is an N at the end or beginning of it, Not sure if it cut off or not.

Step-by-step explanation:

Well you would need to do 20(7) to get 140, then multiply that to N. I would say B because I'm assuming you're missing out on some part of it, if it is N at the beginning or end then it is B.

Write a short definition of "photosynthesis"

Answers

Answer:

Photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.

Step-by-step explanation:

I hope this helps if it does can i get brainlist

photosynthesis is a process that occurs in plants. it is used to convert sunlight into sugar for the plant in order to create chemical energy. this energy is used to help the plant make glucose ! hope this helped ♡

how do i solve for x and y?

Answers

Answer:

X= 8 and y= 138

Step-by-step explanation:

IF ANS IS CORRECT COMMENT BACK FOR EXPLANATION

la suma de los cuadrados de dos numeros​

Answers

what? i’m confusedd?

7. What is the slope of a line that passes through the
origin and (-3,-2)?

Answers

Answer:

Step-by-step explanation:

( 0, 0) and (-3 , -2)

Slope = Change in y ÷ change in x

          [tex]= \frac{-2-0}{-3-0}\\\\=\frac{-2}{-3}\\\\=\frac{2}{3}[/tex]

English alphabets ....letters ?

Answers

Step-by-step explanation:

a e I o u y are all vowels if that helps

aeiou (somtimes y) ... not sure what the question is
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