a. Y = x + 7
-5y + 3x = -13
systems of equations
Answers
Related Questions
1,729 is divisible by 9
a. true
b. false
Answers
A number divided by 3 and then 4 is added to the quotient.the result is 8.find the number
Answers
Answer:
12
Step-by-step explanation:
8-4= 4 So, 4 is the quotient.
4x3= 12 So 12 is the original number
12/3 + 4= 8
Which is the correct Classification of 18
Answers
Answer:
is there something that goes with it or?
Step-by-step explanation:
Jack and beth are selling wrapping paper for a school fundraiser. Customers can buy rolls of plain wrapping paper and rolls of shiny wrapping paper. Jack sold 5 rolls of plain and 8 rolls of shiny for a total of $190. Beth sold of 5 rolls plain and 3 shiny for a total of $90. Find the cost of each roll of wrapping paper
Answers
Answer:
Cost of a roll of plain wrapping paper = $6
Cost of a roll of shiny wrapping paper = $20
Step-by-step explanation:
Let [tex]x[/tex] denotes cost of a roll of plain wrapping paper and [tex]y[/tex] denotes cost of roll of shiny wrapping paper.
Jack sold 5 rolls of plain and 8 rolls of shiny for a total of $190.
[tex]5x+8y=190\,\,\,(i)[/tex]
Beth sold of 5 rolls plain and 3 shiny for a total of $90.
[tex]5x+3y=90\,\,\,(ii)[/tex]
Subtract (ii) from (i).
[tex]8y-3y=190-90\\5y=100\\y=20[/tex]
Put [tex]y=20[/tex] in (ii)
[tex]5x+3(20)=90\\5x+60=90\\5x=90-60\\5x=30\\x=6[/tex]
Therefore,
Cost of a roll of plain wrapping paper = $6
Cost of a roll of shiny wrapping paper = $20
Find the GCF of 14x and 18xy
Answers
Answer:
2x
Step-by-step explanation:
first find the GCF of 14 and 18
2
and then find the GCF of x and x
x
= 2x
hope it's helpful ❤❤❤❤
THANK YOU.
#
The greatest common factor of 14x and 18xy is 2x if the numbers are 14x and 18xy.
What is LCM?It is defined as the common number of two integers, which is the lowest number that is a multiple of two or more numbers. The full name of LCM is the least common multiple.
It is given that:
The GCF of 14x and 18xy
As we know, GCF is the greatest common factor.
The greatest common factor of 14 and 18 or
GCF(14, 18) = 2
And the greatest common factor of GCF of x and xy
= x
the greatest common factor of 14x and 18xy is:
= 2x
Thus, the greatest common factor of 14x and 18xy is 2x if the numbers are 14x and 18xy.
Learn more about the LCM here:
brainly.com/question/20739723
#SPJ2
Alice walks her dog on a 10-foot leash.
While Alice is standing still, what is the
area of space the dog has to roam while
on the leash?
Answers
Answer:
31.4159...feet
Step-by-step explanation:
The area of a circle is 2x radius squaredx pi
Triangles ABC and JKL are similar. What is m
Answers
One triangle equals 180 degrees so you subtract 48 - 180= 132. Then you divide 132 by two because the bottom two angles are equal so 132/2 equals 66
Sorry that was confusing hope this helps!
An 18% tip is left on a $65 dinner bill. 5% tax is added (before tip). What is the total paid?
Answers
Answer: $79.95
Step-by-step explanation:
65 × 0.18 = 11.7
65 × 0.05 = 3.25
11.7 + 3.25 = 14.95
14.95 + 65 = $79.95
The are of a rectangle is 12x² - 8x - 15. The width is (2x - 3). What is the length of the rectangle?
Answers
Answer:
The length of the rectangle is (6x+5)
HELPP IS THIS CORRECT
Answers
Answer:
Looks correct.
Step-by-step explanation:
The lines (absolute value) turn the negatives to positive.
Hope you get it correct!
(i need more characters to send this but yeah you're correct. congrats :) )
What is the slope of the graph of y=12x-19?
Answers
Answer
This equation is given in slope intercept form.
y = mx + b
m represents the slope, so which value in your equation will be the slope?
Step-by-step explanation:
y = mx + b
y = 12x + 19
m = ____
The Henry family drove 276.5 miles on the family vacation. They used 7.9 gallons of gas. How many miles per gallon of gas did they get on the trip?
Answers
Answer:To solve this problem you would have to write 276.5 over 7.9 and divide the numerator and denominator by 7.9 since you want miles per gallon (it should have a denominator of 1 after you divide). When you do this you will get 35, so the Henry family got 35 miles per gallon of gas on the trip.
Step-by-step explanation:
Evaluate (2-3)^4
(4) - 9 = 3.
O -7
O-2
O 1
O 2
Answers
An uber in Los Angeles charges $3.50 per mile and $2 for every person. If taxi cab ride for three people costs $20, how far did the taxi cab travel?
Answers
Answer:
4 miles
Step-by-step explanation:
how do you solve this equation?
Answers
Answer:
[tex]5 \sqrt{2} [/tex]
= 7.071067812
Step-by-step explanation:
hope this helps
can someone answer this asap :))
^^ all i need is the second one shown in the picture, you don’t have to do #1 :)
also can u please show everything step by step so i can understand? thank you!
Answers
the red is y>8x-4, the blue is y>-1/2x+1/2
2x-.25y < 1 is equal to 2x-1/4y < 1
multiply each side by 4:
8x-y < 4
add y to each side:
8x < 4+y
subtract 4 from each side:
8x-4 < y
rewrite:
y > 8x-4
4x+8y > 4
divide both sides by 8:
1/2x+y > 1/2
subtract -1/2x from each side:
y > -1/2x + 1/2
2x – 3y = -5
у = х – 1
y=?
x=?
HELP
Answers
Answer:
Y = 1
X= -1
Step-by-step explanation:
Y is 3 so x is 2 and if y = x then x - 1 would be one and then that would make y = 1
X is 2 - y which is 3 will equal -1
Answer:
Step-by-step explanation:
2x – 3y = -5.........(i)
у = х – 1................(ii)
Multiply equation (ii) by 3,
3у = 3х – 3.......(iii)
Add (i) and (iii)
2x – 3y = -5
+
-3x + 3y = – 3
=
-x = -8
x = 8
put the value of x in eq (ii)
у = х – 1
у = 8 – 1
y = 7
Do mark me as brainly. Thanks
At the beginning of a population study, city had 210,000 people. Each year since, the population has grown by 5.5%. Let t be the number of years since the start of the study. Let y  be the cities population. Write an exponential function showing the relationship between y and t. 
Y=
Answers
Answer:
y = 210,000(1.055)^t
Step-by-step explanation:
Initial population: p = 210,000
Annual growth rate: 5.5% = 0.055
Number of years: t
Population in year t: y
y = p(1 + r)^t
y = 210,000(1 + 0.055)^t
y = 210,000(1.055)^t
What number a is 0.4% of 40?
Answers
Answer:
0.16
Step-by-step explanation:
hope this helps!
Answer:
0.16
Step-by-step explanation:
First let's convert 0.4% to a decimal.
0.4% = 0.004
So, 0.4% of 40 is just 0.004 times 40, which is 0.16.
Let me know if this helps!
What geometric shapes can you draw that have no pairs of parallel sides
a.) parallelogram
b.) isosceles triangle
c.) rhombus
d.) regular octagon
Answers
Answer:
B
Step-by-step explanation:
Isosceles have no parallel sides, there lines go inward into each other.
Answer:
b
Step-by-step explanation:
Simplify
7x^0 y^-2 (2y^4)
A. 14xy^2
B. 9y^2
C. 14/y^2
D. 14y^2
Answers
Answer:
the answer is d
Step-by-step explanation:
7*y^-2*2y^4
D. 14y^2
Step-by-step explanation:
please mark brainliest :)
Maria looked at the nutrition labels for 5 different foods. She recorded the total calories and the calories from fat for each food in a table.
Calories
Calories from Fat
Percent of
Calories
from Fat
60
270
455
130
Food 1
Food 2
Food 3
Food 4
Food 5
125
40
90
25
310
95
Maria wants to identify which foods have a percent of calories from fat that is less than 30%. Select all of the foods that meet this criterion.
Answers
Answer:
food 1 food 3 food 5
Step-by-step explanation:
The graph of y = f(x) is shown below. What are all of the real solutions of f(x) = 0?
Answers
Answer:
x = -4, 4
Step-by-step explanation:
Given graph in the attachment represents the function y = f(x)
Real solutions of the function means all the points where the curve of the graph either touches or crosses the x-axis.
Since, graph of the function touches and crosses at x = -4 and x = 4
Therefore, all real solutions of the function are x = -4 and x = 4
What is the equation of the line shown below?
A. Y=(4/5)x-1
B. Y=-(4/5)x-1
C. Y=(5/4)x-1
D. Y=-(5/4)x-1
Answers
Answer:
B
Step-by-step explanation:0
The negative in front of the -(4/5), means you have to move four spaces back but move five up
hopes this helps~
PLEASE HELP ME I BEG OF YOU IF YOU HELP ME I WILL GIVE YOU BRAINTLIEST JUST PLEASE HELP ME "Julie goes to the sports store and spends $40.50 before tax. She buys a pair of shorts for $21.75 and 3 pairs of socks that each cost same amount. How Much does each pair of socks cost?" Please help me
Answers
23.75/3=7.916 which you would round up to 7.92 so the answer is “about $7.92”
7y - 9 = 3y + 19
a. 7
b. -4
C.
-7
d. 4
Answers
so y=7
What is 10 divided by 1/2?
Answers
Answer:
[tex]20[/tex]
Step-by-step explanation:
1. Use rule: a ÷ b/c = a × c/b.
[tex]10 \times 2[/tex]
2. Simplify.
[tex]20[/tex]
Therefor, the answer is 20.
Jerry is saving his money. He started with $15.00. If he adds $10.00 to his savings
each month, how much will he have saved after 2.5 months?
Answers
Answer:
$40
Step-by-step explanation:
use y = mx + b
y = amount saved = ?
m = amount saved per week = $10
x = time (in months) saving = 2.5
b = money jerry started with = $15
plug in:
y = (10)(2.5)+15
y = $40
Simplify: 10√11(4√6+7) HELPPPP
Answers
Answer:
557.12527151
Step-by-step explanation:
F(t) 2t-3
F(7)=?
What does f(7) equal?
Answers
Answer:
F(7) = 11
Step-by-step explanation:
F(7) = 2(7) -3
= 14 - 3
= 11
Answer:
f(7)=2/7t+-3/7
Step-by-step explanation:
you just have to plug 7 in and put an = sign which makes F(7)=2t-3 then solve