if (a, -12) is a point on the graph of y=x^2-7x, what is a?
If so, you can insert that y = -12 and solve for a which will equate to x.
[tex]-12=x^2-7x[/tex]
[tex]x^2-7x+12=0[/tex]
[tex](x-3)(x-4)=0\implies a_1=3,a_2=4[/tex]
So a could be 3 or 4 (has two solutions).
Hope this helps.
What is the absolute value of –8? Use the number line to help answer the question.
A number line going from negative 8 to positive 8. A point is at negative 8.
–16
–8
8
16
Answer:
The absolute value is 8
Step-by-step explanation:
the absolute value of a number is always going to be positive. if you have a negative number and need the absolute number, you just put the opposit of the number.
Answer:
The absolute value is 8
John solved the follow problem incorrectly. What was his mistake? What is the correct answer?
Johns work:
(-1 1/5) divided by 2/3.
(-1 1/5) x 3/2 = -1 3/10.
Your Work, Your Explanation:
Answer:
He didn't turn the proper fraction to an improper fraction.
-1 1/5 = -6/5
-6/5 * 3/2
-18/10
-1 8/10
Lindsey Smith was the top scorer in a women's professional basketball league for the 2006 regular season, with a total of 867 points. The number of two-point field goals that Lindsey made was 66 less than double the number of three-point field goals she made. The number of free throws (each worth one point) she made was 36 less than the number of two-point field goals she made. Find how many free throws, two-point field goals, and three-point field goals Lindsey Smith made during the 2006 regular season. How many free throws, 3 pointers, and 2 pointers did she make?
Answer:
Kindly check explanation
Step-by-step explanation:
Given that :
Total point = 867
Let :
number of 3 point goals = p
Number of 2 point goals = 2p - 66
Number of 1 point goals = (2p - 66) - 36 = 2p - 102
Hence,
3p + 2(2p - 66) + 2p - 102 = 867
3p + 4p - 132 + 2p - 102 = 867
3p + 4p + 2p - 234 = 867
9p - 234 = 867
9p = 867 + 234
9p = 1101
p = 122.33
2 pointer = 2p - 66
2(122.33) - 66 = 178.67
1 point = 2p - 102
2(122.33) - 102
= 142.67
Note: you may need to recheck the parameters given, because the expected result should be whole numbers
3x + 5 - (5x + 8) = -4x - 7
Answer:
Standard form:
2x + 4 = 0
Factorization:
2(x + 2) = 0
Solutions:
x = −4 /2 = −2
Answer:
x = -2
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
3x+5−(5x+8)=−4x−7
3x+5+−1(5x+8)=−4x−7(Distribute the Negative Sign)
3x+5+−1(5x)+(−1)(8)=−4x−7
3x+5+−5x+−8=−4x−7
3x+5+−5x+−8=−4x+−7
(3x+−5x)+(5+−8)=−4x−7(Combine Like Terms)
−2x+−3=−4x−7
−2x−3=−4x−7
Step 2: Add 4x to both sides.
−2x−3+4x=−4x−7+4x
2x−3=−7
Step 3: Add 3 to both sides.
2x−3+3=−7+3
2x=−4
Step 4: Divide both sides by 2.
[tex]\frac{2x}{2} = \frac{-4}{2}[/tex]
x = −2
Determine the slope of the line that contains the point T(6,2) & V(8,5)
Answer:
3/2
Step-by-step explanation:
We can use the slope formula
m = ( y2-y1)/(x2-x1)
= ( 5-2)/(8-2)
= 3/2
What is the first step to solve for n
in the following equation?
3n - 7 = 30
Group of answer choices
Add 7 to both sides
Multiply both sides by 3
Divide both sides by 3
Subtract 7 from both sides
Zander is comparing the height and weight of his friends and family members. He'd like to create a data display to see if there is a relationship between his friends' height and weight. Below is the scatter plot he designed.
A scatter plot labeled Height and Weight is shown. The x-axis is labeled Height (in inches) and has tick marks ranging from 0 to 80, separated by increments of 10. The y-axis is labeled Weight (in pounds) and has tick marks ranging from 0 to 250, sepa
Explain, using complete sentences, whether or not this is the most appropriate format for representing this data and why. If it is not the best format, explain which format should have been used instead. (5 points)
Answer:
I believe it is a good representation because it shows the differences in the heights to the weights.
Answer:
No, I don't believe this is the most appropriate format, the scatter plot is good but the weight section is not labeled correctly, the dollar signs don't belong, they are irrelevant to weight and height. And the height section should be changed to feet instead of inches, it would just make more sense.
True or False: An isosceles triangle is a triangle with no two sides the same length
Answer:
False
Step-by-step explanation:
An isosceles triangle does have at least two equal sides
I hope this helps
if you could, feel free to mark me Brainliest it would be much appreciated :D
what’s the answer i need help
Find the slope and y intercept of the line. Graph the line.
-3x - 5y = 5
HELP FAST I GIVE BRAINLIEST
The equation below shows the area of a trapezoid, A, with a height of 9 cm, and one base 35 cm.
A = 9 over 2 (b + 35)
Which of the following formulas correctly solves for the other base, b?
b - the other base;
A = 9/2 ( b + 35 ) / * 2 ( we will multiply both sides of the equation by 2 )
2 A = 9 ( b + 35 )
b + 35 = 2 A / 9
b + 35 - 35 = 2 A / 9 - 35
b = (2 A / 9 ) - 35
Answer: B ) b = 2 multiplied by A over 9 - 35
Hope this helps pls give me brainliest
Answer:
B = 2 multiplied by A over 9 - 35
Step-by-step explanation:
ion know
A taxi charges an initial fee of $1.50 plus $2.00 per miles
Which equation can be used to find the total cost in dollars, y, for trip that is x miles?
Solve the equation. Write a reason for each step
Answer:6. -6 is the answer
Step-by-step explanation:add 10 to -10 and -40 and bring down 5x since -10 and 10 cancel out you have to cross it out and have -30 from -40 +10 and now 5x=-30 you have to divide 5 on each side and that would give you -6
Which expression shows
(36+6) in in the form of
c(a+b), where c is the greatest common factor of 36 and 6
The GCF of 6 and 36 is 6.
36/6 = 6
6/6 = 1
Write the equation with the GCF outside the parentheses and the multiples inside:
Rewrite as 6(6+1)
Answer:
36/6= 6
6/6= 1
Step-by-step explanation:
sorry but i cant explain it but all i know is the answer
The Li family is going hiking. The distance from their car can be found using the function d(t) = 3t + 1, where d is the miles away from their car and t is in hours that they have hiked. If d(t) = 7, what is the value of t and what does it represent?
A. t = 2, the Li family has been hiking for 2 hours
B. t = 22, the Li family has been hiking for 22 hours.
C. t = 2, the Li family is 2 miles away from their car.
D. t = 22, the Li family is 22 miles away from their car.
Answer:
A
Step-by-step explanation:
d(t)=3t+1 but d(t)=7
distance*time=3*time+1
so d(t)=7 is the same as
d(t)=3(2)+1
meaning that you hiked for 2 hours.
What is the domain and the range
Answer:
The Domain is X and Range is Y
Step-by-step explanation:
Top values are domain and bottom values are Range
A train travels at a constant rate of 45 miles per hour.
What is the distance in miles, that the train travels in t hours?
112.5 miles.
Step-by-step explanation:
For 2.5 hours multiply 45 by 2.5= 112.5 miles. I hope this is right!
Find the x−and y−intercepts.
−5x − 4y = 20
The x−intercept is ____
.
The y−intercept is ____
Answer:
x-intercept(s): (−4,0)(-4,0)
y-intercept(s): (0,−5)
Step-by-step explanation:
To find the x-intercept, substitute in 0 for y and solve for xx. To find the y-intercept, substitute in 0 for x and solve for y.
A influencer gains the same number of followers at a constant rate. Every 7 days, the influencer gains 630 followers. How many followers should the influencer gain after 25 days?
90 followers
630 followers
2500 followers
2250 followers
HURRY PLEASE!!!
Solve the compound inequality:
3x + 1 <-5 OR 2x -5> 7
Answer:
x < -2
x > 6
Step-by-step explanation:
use a number line if u need a visual
What is 2/3 divided by 1/4
Answer:
I got 8/3...............
Gary saved dimes and nickels at a ratio of 5:7. Then, he saved 20% more dimes and 3 times the number of nickels. If he had 540 dimes and nickels altogether in the end, how many more nickels then dimes did he have?
Answer:
Step-by-step explanation:
Gary saved dimes and nickels at a ratio of 5:7.
5/12 = Dimes
7/12 = Nickels
Then, he saved 20% more dimes and 3 times the number of nickels.
If he had 540 dimes and nickels altogether in the end, how many more nickels then dimes did he have?
Let the number of dimes = x
Let the number of nickels = y
Total number of dimes and nickels = 540
Three less than twice a number is 15.
What is the number?
a. = −6
b. = 6
c. = −9
d. = 9
Answer:
3-2x=15
Step-by-step explanation:
add 3 to both sides makes -2x=18. divide -2 from both side gets the answer x=-9, so the answer is C, -9
Write the equation of the parabola in vertex form.
vertex (4,4), point (3, -1)
Answer:
[tex]y=-5(x-4)^2+4[/tex]
Step-by-step explanation:
Equation of the Quadratic Function
The vertex form of the quadratic function has the following equation:
[tex]y=a(x-h)^2+k[/tex]
Where (h, k) is the vertex of the parabola, and a is a coefficient different from zero.
The vertex is located at (4,4).
Substituting the coordinates of the vertex, the equation of the function is:
[tex]y=a(x-4)^2+4[/tex]
The value of a will be determined by using the given point (3,-1).
[tex]-1=a(3-4)^2+4[/tex]
Operating:
[tex]-1=a(1)+4[/tex]
Solving:
[tex]a=-5[/tex]
The equation of the graph is:
[tex]\boxed{y=-5(x-4)^2+4}[/tex]
whhhhhhhhhhhhhhyyyyyyyyyyyyyyyyyyy
Answer:
[tex]3x^{2}[/tex]
100x – 200 > 40x - 80
X ?
Lol
Answer:
x>2 here u go kenma :)
Step-by-step explanation:
100x-200>40x-80
60x-200>-80
60x>120
x>2
how do you solve 8 = 3r - 1
add 1 to both sides then divide by 3. the answer should be r=3
Answer:
r=3
Step-by-step explanation:
First, you would add 1 to both sides so:8+1=3r-1+1 so that gives you 9=3r.
Then, you divide 3 from both sides. 9/3=3r/3 so that gives you r=3
5.012121212
rational or irrational?
Answer:
it is rational
Step-by-step explanation:
if it is not able to be a fraction it is irrational, but it can be turned into a fraction so therefore it is a rational.
Hope this helped
A salesperson makes 18% commission on every TV sold. If the salesperson sold four TV’s at $885 each, how much commission did they make?
Answer:
They made a $531 commission.
Step-by-step explanation:
The given is:
The price of each TV is $885The commission is 18% on every TV soldThe salesperson sold 4 TV'sWe need the value of the commission
Let us find the commission of every TV, then find the total amount of all
∵ The price of each TV is $885
∵ The commission is 18 %
→ Find 18% of $885
∴ The commission on every TV = 885 × 15%
∴ The commission on every TV = 885 × 15/100
∴ The commission on every TV = $132.75
∵ The salesperson sold 4 TV
∴ The commission on them = 4 × 132.75
∴ The commission on them = $531
They made a $531 commission.
Answer: $637.20
Step-by-step explanation:
Each TV is $885
do 885 · 18% or 885 · 18/100
that is 159.3
multiply that by the amount of TVs sold (4)
159.3 · 4 = 637.2
$637.20