Let's see what to do buddy...
____________________________
Reminder:
[tex](a + b)(a - b) = {a}^{2} - {b}^{2} [/tex]
So we need to just Multiply above equations like this :
[tex]x + y = 70[/tex]
[tex]x - y = 40[/tex]
[tex](x + y)(x - y) = 70 \times 40[/tex]
[tex] {x}^{2} - {y}^{2} = 2800 [/tex]
____________________________
And we're done.
Thanks for watching buddy good luck.
♥️♥️♥️♥️♥️
PLZ HELP ASAP WILL MARK BRAINIEST
(x−5)/2 + (x−1)/8 = (x−3)/4 + (x−4)/3
solve for x!!
Answer:
x= 13
Step-by-step explanation:
Select all of the zeros of the function f(x)=(3x−4)(x+2).
(I NEED TO SHOW MY WORK SO PLEASE SHOW HOW YOU GOT THE ANWSER)
Select all that apply:
4
2
43
− 43
− 2
− 4
Answer:
The zeros of the function are x = 4/3 or x = -2
Step-by-step explanation:
To find the zeros of the function, we set f(x) to zero
Thus;
(3x-4)(x + 2) = 0
3x - 4 = 0
or x + 2 = 0
3x = 4 or x = -2
x = 4/3 or x = -2
Given f(x) = 2x2 -x + 3, find f(-2).
Answer:
is 2x2 multiplying them or is x the letter ?
Step-by-step explanation:
if multiplying: 4-(-2)+3 = 11
if the letter: 2(-2)2-(-2)+3 = -3
hope this helped :))
Casey is using a recipe that requires 23cups of flour for every 2 cups of milk. If Casey uses 5 cups of milk, how many cups of flour are needed?
Answer: 57.5
Step-by-step explanation:
To solve this problem, you need to multiply the number of cups of flour per cup of milk times 5.
Step 1: Find how many cups of flour per cup of milk.
23/2 = 11.5 cups of flour per cup of milk
Step 2: Multiply the cups of flour per cup of milk, times the 5 cups of milk.
11.5 * 5 = 57.5 total cups of flour
With the equation 3z+3=2z+6
Answer:
z = -3
Step-by-step explanation:
Simplifying
3z + -3 = 2z + -6
Reorder the terms:
-3 + 3z = 2z + -6
Reorder the terms:
-3 + 3z = -6 + 2z
Solving
-3 + 3z = -6 + 2z
Solving for variable 'z'.
Move all terms containing z to the left, all other terms to the right.
Add '-2z' to each side of the equation.
-3 + 3z + -2z = -6 + 2z + -2z
Combine like terms: 3z + -2z = 1z
-3 + 1z = -6 + 2z + -2z
Combine like terms: 2z + -2z = 0
-3 + 1z = -6 + 0
-3 + 1z = -6
Add '3' to each side of the equation.
-3 + 3 + 1z = -6 + 3
Combine like terms: -3 + 3 = 0
0 + 1z = -6 + 3
1z = -6 + 3
Combine like terms: -6 + 3 = -3
1z = -3
Divide each side by '1'.
z = -3
Simplifying
z = -3
Answer:
=3z+3=2z+6
=3z-2z=6-3
=z=3
hope you like the answer
please mark the answer as brainliest
saras bike weighs 2.03 kilograms . If 1 kilogram is 2.2 pounds, how much many pounds is saras bike
Answer:
4.5 pounds
Step-by-step explanation:
2.2X2.03=4.466(I rounded to the nearest tenth if that helps)
HELPPPPPPP PLEASEEEEE
Answer:
D
Step-by-step explanation:
The constant of proportionality is 8 as seen by the equation:
y = 8x
8 will constantly be multiplied by x (the number of dollars earned) to solve for y (number of tickets sold)
The number 8 will not change
Therefore, 8 is the constant ot proportionality
BRAINLIEST ANSWER!!
During the summer, you work 30 hours per week at the gas station and earn $8.75 per hour. You also work as a landscaper for $11 per hour and can work as many hours as you want. You want to earn a total of $400 per week. How many hours, t, must you work as a landscaper?
Identify an equation that can be used to answer the question.
A) 30t=400-8.75(11)
B) 8.75+11+400=30+t
C) 8.75t+11t=400
D) 30(8.75)+11t=400
Solve the equation to find the number of hours you must work as a landscaper.
You must work ___ hours as a landscaper.
Answer:
1. 30(8.75) + 11t = 400
2. 12.5 hours
Step-by-step explanation:
1. What is given is you work for 30 hours per week at a gas station for $8.75 an hour. You also work as a landscaper for $11 an hour. You want to a make a total of $400 per week.
30 hours and $8.75 an hour would be equivalent to 30(8.75)
We don’t know how many hours you work as a landscaper but you earn $11 an hour, which is equivalent to 11t
Finally, you want to earn a total of $400 a week, which means the sum equals 400
30(8.75) + 11t = 400
2. 30(8.75) = 262.5
400 - 262.5 = 137.5
137.5 / 11 = 12.5
CAN SOMEONE PLS HELP ME ANYONE ITS ALMOST DUE
Answer:
3x(2+n)+[7+n]
Step-by-step explanation:
The answer is kind of self-explanatory, but think of it this way. If n=5, then the equation would be 3x(2+5)+[7+5]. First we would solve 2+5 which is 7. Then we would do 7+5 which is 12. We are now left with 3x7+5.
40= -1/3(9x+30)+2
Pls solve this in steps and explain
Answer:
-1/3 x 9x -1/3 x 30 + 2
-3x -10 +2
-3x - 8
Step-by-step explanation:
this is a distributive type of problem you distribute the -1/3 to the 9x and the 30 by distribute i mean multiply. if you dont know how to multiply this use the calculator but you multiply it by the 2 pairs of numbers in the parenthesis and then you just add the 2
Please help me guys please
Answer:
i think it is the 4th one
Step-by-step explanation:
yo it would be cool if you would give me brainliest
Sara spent half of her allowance going to the movies. She washed the family car earned 6 dollars. What is her weekly allowance if she ended with 15 dollars?
The answer for this question would be 7
Answer:
18 dollars
Step-by-step explanation:
15-6=9
9x2 (double it because she spent half)18
how many feet should be cut off to make a plank 5 7/8 feet long
Answer:
2 5/8
Step-by-step explanation:
5 7/8 + 2 5/8= 8 1/2
Answer:
3 4/8 or 3 1/2
Step-by-step explanation:
2. What is the variable in this expression? 4y-5
Answer:
y
Step-by-step explanation:
A variable is a letter that holds the place of a number. y in this expression matches that description, so it is the variable.
PLS HURRY!!!!!!!!
The members of set A are the integer solutions of the inequality 2x−5≤11 and the members of set B are the integer solutions of the inequality −2x+7≤−9. What is one member of the intersection of A and B?
HOPE IT HELPS YOU!!!
What’s 5x+4y-2x-y simplified
Answer:
Step-by-step explanation:
Solving like terms
3x + 3y
Both have 3 in common so
3(x + y)
Suzi starts her hike at 240 feet below sea level. When she reaches the end of the hike, she is still below sea
level at - 143 feet. What was the change in elevation from the beginning of Suzi's hike to the end of the
hike?
Answer:
383ft
Step-by-step explanation:
Given parameters:
Elevation = 240ft at the start
Elevation at the end = -143ft
Unknown:
Change in elevation:
Solution:
The change in elevation is the difference between the two hiking milestone;
change in elevation = Elevation at the start - Elevation at the end
= 240ft - (-)143ft
= 240 + 143
= 383ft
I NEED HELP!!!!!!!!!!!!!!!!!!!!!!!!!!A 120-inch pipe is cut into two pieces, One piece is three times the length of the other. Find the
length of the shorter piece.
Answer:
the shorter piece is 30 inches.
Step-by-step explanation:
3x + x = 120
4x =120
x =30
Write an equation for the line that is parallel to the given line and passes through the given point . Write the equation of the line in y=mx+b form
y=5x-7;(2,-2)
A parallel line has the same slope as the original equation. Therefore, the slope (m in y=mx+b) will be 5. From there, we can use the point-slope formula and convert it into the slope-intercept formula (y=mx+b).
Point-slope is:
y-y₁=m(x-x₁)
Plug in our known values:
y-(-2)=5(x-(2))
Distribute and set it equal to y:
y+2=5x-10
y=5x-12
Let me know if you have any more questions :)
2x/3+x/2=5/6
Please solve for x as a fraction!
Answer:
the value of x is 5/7 which is in fraction
Answer: x = 5/7
Step-by-step explanation: 2x/3 + x/2 =5/6
To use a least common denominator, divide LCD by the original denominator and multiply the original numerator by the result.
for 2x/3 6÷3=2 2×2x=4x so that becomes 4x/6
for x/2 6÷2=3 3× (invisible) 1 = 3x, so that becomes 3x/6
combine 4x/6 + 3x/6 = 7x/6
Back to the original equation, substituting the calculated term:
7x/6 = 5/6 Multiply both sides by 6 to simplify (6)(7x/6) = (6)(5/6) 6's "cancel"
7x = 5 . Divide both sides by 7 to solve for x 7x/7 = 5/7
x = 5/7
Micheal got 28 out of 33 points on his math test. What percent of the questions did he get correct? Round your answer to the nearest whole number
Answer:
85%
Step-by-step explanation:
Answer:
about 84
Step-by-step explanation:
28/33=84/99
What is the ordered pair representing the y intercept of the line containing he points (4,8) and (2, -4)?
Answer:
(0,-16)
Step-by-step explanation:
Solve 3x – X + 2 = 12. (1 point)
100
can somebody help me with this please? this is NOT cheating, this is an optional practice and i just need help with it
Answer:
ive done the math, and im not sure if i have the correct answer or not, but i have arrived at choice B
Step-by-step explanation:
i apologize sincerely if this is incorrect
What is the slope and y intercept?
Answer:
Slope is 1, or 1/1. The y - intercept is -3, or (0, -3)
Step-by-step explanation:
Just counted the squares on the graph :)
Select all equations that have graphs with the same y-intercept.
A. y = 3x - 8
B. y= 3x -9
C. y= 3x + 8
D. y = 5x - 8
E. y = 2x - 8
F. y = 1/3x -8
Answer:
A, D, E, F
Step-by-step explanation:
They all have the same y-intercept -8.
The formula is like this y = mx + b
m = slope
b = y-intercept
x = input
y = output
You are about to graph the linear equation y=1/4x+8 but you need to determine the scale of the x and y axes first. Select the best option for a scale for both the x-axis and y-axis (one of each). A) x scale of -5 to 5 B) x scale of -15 to 15 C) y scale of 0 to 15 D) y scale of -30 to 30 (10 POINTS AND BRAINLIST IF RIGHT WILL REPORT WRONG ANSWERS)
Answer:
B) x scale of -15 to 15
C) y scale of 0 to 15
Step-by-step explanation:
The change in y-value is 1/4 of the change in x-value, and the y-intercept is 8. That means a y-scale of -30 to 30 would not be well-utilized over a small range of x. (It would take an x-range of about 200 to make much use of that y-scale.)
An appropriate y-scale is one that has 8 near its middle. The corresponding x-scale is then roughly ±4 times half the y-scale. The closest choices are ...
-15 ≤ x ≤ 15 . . . . choice B
0 ≤ y ≤ 15 . . . . . . choice C
HELPPPPP PLEASEEEEEE !!!!!!!A recipe requires x number of cups of flour to produce y number of servings.
Using the table, what is the number of servings per cup of flour?
Answer:
1 cup of flour = 8 servings
Step-by-step explanation:
3/4 cup of flour=6 serving
3/4 / 4/3=6 / 4/3
1 cup of flour = 8 serving
Help please i will be so thankful
Answer:
-5
Step-by-step explanation:
Answer:
the answer is y=m+b
Step-by-step explanation: that is your formula
Express as a simple fraction in lowest terms
18
OK
42
Answer:
3/7 is the answer. It is 3 over 7