Determine if (-1,2) is a
solution to the system
(2x + 5y = 8
(3x - 2y = 5
Answer:
Not a solution.
General Formulas and Concepts:
Order of Operations: BPEMDAS
Step-by-step explanation:
Step 1: Define
[tex]\left \{ {{2x+5y=8} \atop {3x-2y=5}} \right.[/tex]
(-1, 2)
Step 2: Substitute and Check
Substitute: [tex]\left \{ {{2(-1)+5(2)=8} \atop {3(-1)-2(2)=5}} \right.[/tex]Multiply: [tex]\left \{ {{-2+10=8} \atop {-3-4=5}} \right.[/tex]Combine: [tex]\left \{ {{8=8} \atop {-7=5}} \right.[/tex]We see here that -7 ≠ 5. Therefore, (-1, 2) is not a solution of the systems of equations.
Kevin makes $12 for every car he washes. He wants to go on a trip that will cost $350. He already has saved $120. What is the minimum number of cars he must wash?
Someone please help. I'll mark Brainliest!
Two negative integers have a sum of -7 and a
product of 12. What are the integers?
Separate the answers with a comma.
Answer:
-4, -3
Step-by-step explanation:
I hope this helps! plz give brainliest
Answer:
THAT'S NOT THE ANSWER I PUT IT IN AND GOT IT WRONG!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Step-by-step explanation:
Find the sum.
6(2k – 2) + (7k + 5)
Answer:
Your answer is: 19k - 7
Simplify the expression.
Step-by-step explanation:
Hope this helped : )
Angles of XYZ and ABC are the blank because the triangle are blank and corresponding angles are blank.
Answer:
the answer is your teacher just wanted to draw a triangle and get paid for it.
is a relation that is also a function.
{(1,6), (1,7), (7, 8), (8, 9)}
{(2,3), (3, 2), (2, 4), (4, 2)}
{(0, 1), (0, 2), (0, 3), (0,4)}
|{(1, 1), (3, 2), (6,3), (8,4)}
Answer:
The relation {(1, 1), (3, 2), (6,3), (8,4)} is also a function ⇒ D
Step-by-step explanation:
The relation formed from a set of ordered pairs could be a function if every x-coordinate has only one y-coordinate corresponding to it
Examples:
The relation {(1, 3), (-2, 5), (1, -2)} is not a function because x = 1 has two values of y 3 and -2The relation {(2, -3), (-2, 0), (1, 5)} is a function because x = 2 has only y = -3, x = -2 has only y = 0, and x = 1 has only y = 5Let us check all the relation to find which one is a function
∵ The relation is {(1, 6), (1, 7), (7, 8), (8, 9)}
∵ At x = 1, y = 6 and 7
→ x has two values of y
∴ The relation is not a function
∵ The relation is {(2, 3), (3, 2), (2, 4), (4, 2)}
∵ At x = 2, y = 3 and 4
→ x has two values of y
∴ The relation is not a function
∵ The relation is {(0, 1), (0, 2), (0, 3), (0,4)}
∵ At x = 0, y = 1, 2, 3, and 4
→ x has four values of y
∴ The relation is not a function
∵ The relation is {(1, 1), (3, 2), (6,3), (8,4)}
∵ At x = 1, y = 1
∵ At x = 3, y = 2
∵ At x = 6, y = 3
∵ At x = 8, y = 4
→ Every x has only one value of y
∴ The relation is a function
∴The relation {(1, 1), (3, 2), (6,3), (8,4)} is a function
Find the slope of a line that passes through
(-2,5) and (1,7).
Answer:
-2
Step-by-step explanation:
here is a pic explanation
Simplify 1/4 (15-6) + 3^3 divided by 12
Answer:
Step-by-step explanation:
Use PEDMAS method
P - Parenthesis
E - Exponents
D - Division
M - Multiplication
A- Addition
S -Subtraction
[tex]\frac{1}{4}(15-6) + 3^{3}[/tex] ÷ 12 = [tex]\frac{1}{4}*9+3^{3}[/tex] ÷ 12 {Operation inside parenthesis}
[tex]= \frac{1}{4}*9+27[/tex]÷ 12 {Exponents}
[tex]= \frac{9}{4} + \frac{27}{12}\\\\\\= \frac{9*3}{4*3} + \frac{27}{12} \\\\\\= \frac{27}{12} + \frac{27}{12}\\\\\\=\frac{27+27}{12}\\\\\\=\frac{54}{12}\\\\=\frac{9}{2}\\\\= 4\frac{1}{2}[/tex]
Answer:
the answer is c. 4 1/2
Step-by-step explanation:
I guessed c got it right
is 0.4 greater than or less than 0.127
What is the value of x
Answer:
Do you have a picture of it?
Step-by-step explanation:
I need help finding (x) step by step please:) I will reward you will awarding you as a brainliest if you can do this for me.
Answer:
95°
Step-by-step explanation:
The sum of interior angles in a pentagon is 540°
100° + 145° + 120° + 80° + x = 540°
445° + x = 540°
x = 95°
Steven and Gina each wrote an expression, but only Steven’s expression is equivalent to 4x - 8. What could be Gina’s expression?
Question options:
2(2x - 8)
2(2x - 4)
-(-4x + 8)
4(x - 2)
2(2x - 8) should be Gina's expression as it is not equivalent to 4x - 8.
What is a linear equation?A linear equation is an algebraic equation of degree one. In general, the variable or the variables(in the case of a linear equation in two variables) the variables are x and y.
Given, Steven and Gina each wrote an expression, but only Steven’s expression is equivalent to 4x - 8.
∴ Gina's expressions should be the one that is not equivalent to 4x - 8.
After observing the given options and applying distributive properties we conclude that 2(2x - 8) is Gina's expression as it is 4x - 16.
learn more about linear equations here :
https://brainly.com/question/13738061
#SPJ2
Question 2
Solve for y. Write your answer in slope-intercept form y= mx + b.
6x+2y = -10
Question 3
Answer:
y=-3x-5
Step-by-step explanation:
6x+2y=-10
2y = -6x-10 (you need to isolate the y and so i took 6x and subtracted it from both sides)
y = -6/2x-10/2 ( dont feel like explaining)
divide them (-6/2 and -10/2) to get
y=-3x-5
Hope i helped
Which points are on the line that connects points (0, 4) and (1, 2)? Select all that apply.
A. (3, 1)
B. (-1, 6)
C. (4,0)
D. (0, 2)
E. (2,0)
F. (0.5, 3)
Which statement or statements accurately describe a good way to avoid excessive service fees?
1. Try to deposit money in large batches rather than in small amounts.
II. Try to limit the number of withdrawals you make from out-of-network ATMs.
III. Try to avoid using your debit card online.
a. I and II
b. ll only
c. Ill only
d. I and III
Answer:
b. ll only
Explanation:
Remember, service fees often refer to an amount deducted to pay for the cost of providing particular services, such as ATM service charges, etc.
We can this conclusion because if one decides to deposit money in large batches rather than in small amounts; they will be directly subjecting themselves to excessive charges. Consider, most financial institutions often charge higher fees for larger deposits.
Also, if one decides to avoid using your debit card online they will tend to spend more using traditional cash methods which require increasing the number of one's ATM withdrawal.
However, by trying to limit the number of withdrawals you make from out-of-network ATMs, one saves him or herself of excessive service fees.
Gina tracks the low temperatures for a city over six days. Identify the days colder than-1.75°F. Monday Tuesday Wednesday Thursday Friday -2.5°F -1.9°F 0°F -1.5°F 0.5°F
Answer:
Monday
Tuesday
Step-by-step explanation:
Given the temperature data:
Mon _____ Tue _____ Wed _____ Thur ___ Fri
-2.5°F ___ - 1.9°F _____ 0°F _____ - 1.5°F _0.5°F
Days colder than - 1.75°F
Days colder than - 1.75°F are days whereby the temperature value is less than - 1.75
Hence,
-2.5°F < - 1.75°F = (Monday)
-1.9°F < - 1.75°F = (Tuesday)
Hence, temperature on Monday and Tuesday is colder than - 1.75°F
Answer:
Monday
Tuesday
Step-by-step explanation:
Please help!!! Tony wants to build a fence around his rectangular garden that has
dimensions 20 ft by 35 ft. His fence posts need to be placed 5 ft apart.
How many posts will Tony need to buy?
I
Answer:
22 posts
Step-by-step explanation:
on the side of 20 feet you have 5 fence posts each in including one on each of the corners. On the 35 feet side you would have 8 including the corners, but since the corner posts are done its 6 on each 35 feet side. So you get 5+5+6+6=22
Moises comes up to Juan and tells him, "I bet you $45 I can get more phone numbers than you!". Juan takes Moises up on that bet. If Moises gets 8 phone numbers that week, write an inequality that represents how many phone numbers Juan needs to not lose the bet.
Answer:
[tex]8\leq x[/tex]
Step-by-step explanation:
Given: Moises comes up to Juan and tells him, "I bet you $45 I can get more phone numbers than you!"
Moises gets 8 phone numbers that week
To find: an inequality that represents how many phone numbers Juan needs to not lose the bet.
Solution:
Amount of bet = $45
Number of calls that Moises get that week = 8
Moises wins a bet if he gets more phone numbers than Juan
Let [tex]x[/tex] denotes phone numbers that Juan get.
An inequality that represents how many phone numbers Juan needs to not lose the bet is [tex]8\leq x[/tex]
Joshua plans to buy x pencils and one notebook at the schoolstore. A pencil costs $0.10 and a notebook costs $1.25. Joshua
has $7.00
Iln
Maya has 120 caramel apples to sell. Each caramel apple is covered with one topping. If 2/5 of the caramel apples are covered in sprinkles,
how many caramel apples will have sprinkles?
value of the 6 in 36,282.563?
Answer:
6,000 or 6 hundredths
Step-by-step explanation:
Simplify.
12(3x + 5y) plzzz answer fast
Answer:
36x + 60y
explanation:
Answer:
36 x + 60 y
Step-by-step explanation:
Can someone help please?
Answer:
1) 2<x<10 (the first choice)
2) 17<x<40 (the first choice)
3) x<-1 or x>2 (the second choice)
Step-by-step explanation:
1) 2<x<10...this is another way of representing x<10 and x>2 in an "and" inequality. If you look at 2<x<10 from left to right, it says 2 is less than x and x is less than 10.
2) 17<x<40...this represents x>17 and x<40 in an "and" inequality as well. If you look at 17<x<40, it reads 17 is less than or equal to x and x is less than 40.
3) x<-1 or x>2...the signs are greater than or equal to because the dots are closed on the number line. Also, this is not an "and" inequality. This is actually an "or" inequality. You can mainly tell because the lines are shaded opposite ways and do not intersect.
I hope this helped!! Good luck on your assignment and have a wonderful day :3
Point Slope Form : y - y1 = m(x- x1) Write the equation of the line described that passes through (-8,-5), parallel to y = -3x + 9
Answer:
y + 5 = -3(x + 8)
General Formulas and Concepts:
Point-Slope Form: y - y₁ = m(x - x₁)
x₁ - x coordinate
y₁ - y coordinate
m - slope
Slope-Intercept Form: y = mx + b
m - slope
b - y-intercept
Parallel Lines always have the same slope but different y-intercepts.
Step-by-step explanation:
Step 1: Define
Given (Parallel Line): y = -3x + 9
Point (-8, -5)
Step 2: Find variables
Slope m of parallel lines = -3
Step 3: Find parallel line equation
y₁ = -5
x₁ = -8
m = -3
y + 5 = -3(x + 8)
If ΔABC ≅ ΔDEF, what is the length of AB?
Answer:
AB=24ft
Step-by-step explanation:
3x+6=4x
6=4x-3x
6=x
AB=3x+6
AB=3(6)+6
AB=18 + 6
AB=24
Which of the following represents a function
1
X
6
-51 8 1
1 1723 171
10.1) (3,2), (8,3), (2,2), (34)
Write an equation for a line that is perpendicular to y = 2x + 7.
Answer:
y = -[tex]\frac{1}{2}[/tex]x + 5
Step-by-step explanation:
A perpendicular line is the negative reciprocal of the original, it doesn't matter what the y intercept is.
i need this now please help me please !!
Area = 81 pi mi2
Circumference = 18 pi mi
8 x (30 + 2) = (8 x ___) + (8 x 2)
Answer:
30 is the right one Hope this helps you Stay happy and safe Do mark as brainliest ✌️Answer:
30
Step-by-step explanation:
8 x (30 + 2) = (8 x 30) + (8 x 2)
We need to use distributive property.
Hope this helps!
What is the distance between points (6, 2) and (4, 1) to the nearest tenth
Answer:
Distance is 2.2.
Step-by-step explanation:
Use the Pythagorean theorem.
[tex]Distance=\sqrt{(6-4)^{2} +(2-1)^{2} } =\sqrt{4+1} =\sqrt{5}=2.23[/tex]