Answer:
B
Step-by-step explanation:
ita only b .............
The equations that are equivalent to (5x + 6)2 = 3-(4x +12) is (5x+6)2=−4x−9.
Option B is correct.
The very first thing to do is to solve the expression in the given question.
SO,
(5x + 6)2 = 3-(4x +12)
Open brackets
10x + 12 = 3 - 4x - 1210x + 12 = -4x - 9Collect like terms
10x + 4x = -9 - 1214x = -21x = -21/14
Now, we will solve each of the given options to determine which one corresponds to the solution to the expression above.
Starting with Option (a)
5x + 6 = 3 - (4x + 12)
Open brackets
5x + 6 = 3 - 4x - 125x + 6 = -4x - 95x + 4x = -9 - 69x = -15x = -15/9Option (a) is incorrect
b.
(5x + 6 )2 = -4x - 9
Open brackets
10x + 12 = -4x -9Collect like terms10x + 4x = -12 -914x = -21x = -21/14Option (b) is correct
(c.)
52x + 3 = 3 - (4x + 12)
Open brackets
52x + 3 = 3 - 4x - 1252x + 3 = -4x - 952x + 4x = -9 - 356x = - 12x = -12/56x = -3/14Option (c) is incorrect
(d)
(5x + 6)2 = -4x + 15
Open brackets
10x + 12 = -4x + 1510x + 4x = -12 + 1514x = 3x = 3/14Option (d) is incorrect
(e)
5x + 6 = -8x - 18
Collect like terms
5x + 8x = -18 - 613x = - 24x = -24/13Option (e) is incorrect
Therefore, we can conclude that the correct equation equivalent to the given expression in the question can be seen in Option b.
Learn more about algebraic expression here:
https://brainly.com/question/11227332?referrer=searchResults
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 :))
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 :)
How do you know the square root of 17 exponent 2 is equal to 17
Answer:
√17 = q × q = q2
Step-by-step
The square root of 17 in mathematical form is written with the radical sign like this √17. We call this the square root of 17 in radical form. The square root of 17 is a quantity (q) that when multiplied by itself will equal 17.
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.
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
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)
Solve 3x – X + 2 = 12. (1 point)
100
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
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
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:
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
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
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
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
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
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 :)
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 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:
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
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.
Express as a simple fraction in lowest terms
18
OK
42
Answer:
3/7 is the answer. It is 3 over 7
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
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
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
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)
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
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