Answers
Answer:
B
Step-by-step explanation:
Related Questions
What is the x - and y - intercepts of -3y = 7x - 21
Answers
Answer: x-intercept = (3,0); y-intercept = (0,7)
Step-by-step explanation:
-3y = 7x - 21
y = -7/3 x + 7 (divide both sides by -3)
y-intercept = (0,7) (y = mx + b; b is always y-intercept)
0= -7/3 x + 7 (plug in 0 for y to get x-intercept)
-7/3x = -7 (subtract 7 from both sides)
x = 3 (divide both sides by -7/3)
x-intercept = (3,0)
A 5 foot tall person walks away from a 12 foot tall lamppost at a constant rate of 4 feet per second. What is the rate that the tip of the shadow moves away from the lamppost when the person is 9 feet away from the pole?
Answers
Solution :
Given :
The height of the person is 5 foot.
The height of the lamppost is 12 foot.
Speed of the person away from the lamppost = 4 ft/s
Let the distance of the tip of the shadow of the perosn to the pole at t seconds after the person started walking away from the pole be d(t).
By similarity of the triangles, we see that
[tex]$\frac{12}{d}=\frac{5}{x}$[/tex] .................(i)
Here x is the distance from the person to the tip of the shadow. As it is given the speed of the person is 4 ft/s, then the distance of the person from the pole 4t. So we have,
x = d - 4t .............(ii)
Putting (ii) in (i) and solving for d is
d(t) = 6.85 t
So now if we derive d(t), we will get the wanted rate of the tip of the shadow.
∴ d'(t) = 6.85 ft/s
Solve the simultaneous equations
2x + 5y + 11 = 0
3x - y-8= 0
Answers
Answer:
x = 1[tex]\frac{12}{17}[/tex], y = -2[tex]\frac{15}{17}[/tex]
Step-by-step explanation:
2x + 5y + 11 = 0 --- Equation 1
3x - y - 8 = 0
15x - 5y - 40 = 0 --- Equation 2
Equations 1+2: 2x + 5y + 11 + 15x - 5y - 40 = 0 + 0
17x - 29 = 0
17x = 29
x = 29 ÷ 17
x = 1[tex]\frac{12}{17}[/tex]
Substitute x = 1[tex]\frac{12}{17}[/tex] into Equation 1:
2x + 5y + 11 = 0
2(1[tex]\frac{12}{17}[/tex]) + 5y + 11 = 0
3[tex]\frac{7}{17}[/tex] + 5y = -11
5y = -11 - 3[tex]\frac{7}{17}[/tex]
= -14[tex]\frac{7}{17}[/tex]
y = -14[tex]\frac{7}{17}[/tex] ÷ 5
y = -2[tex]\frac{15}{17}[/tex]
What match the decimal with its equivalent percent.
0.0402
Answers
Answer:
The answer would be 4.02% or simply 4%
Step-by-step explanation:
When you have a decimal like 0.0402 for example you move the decimal point to the right twice to get the percentage. Another example would be if you had the decimal 0.08 you would have the percentage 8%. Hope this helped!! If you have the time please mark brainlest?
how to tell if a sequence is arethmetic
Answers
Answer:
If you take any number in the sequence then subtract it by the previous one, and the result is always the same or constant then it is an arithmetic sequence. The constant difference in all pairs of consecutive or successive numbers in a sequence is called the common difference, denoted by the letter d.
Step-by-step explanation:
28. Which graph shows the solution to the inequality-2x+4362
Answers
Answer:
yes
Step-by-step explanation:
nhjgfdshfcvg hbjbhvggvfcrd
Which ordered pairs in the form (x, y) are solutions to the equation
7x−5y=28?
Answers
Answer:7x + -5y = -28
(-4, _)
(1, _)
(_, 14)
Step-by-step explanation:
Based on the story details, what do you know about Meera?
Answers
Answer:
is there a pic or sum sort Imao
Step-by-step explanation:
Answer:
Answer: A
Explanation it is well thought out and it the most logical
Step-by-step explanation:
The answer is 13 because she will not have enough to make 14.
Answers
Answer:
ok??
Step-by-step explanation:
Which is the better buy?
20 pounds of pet food for $14.99 or 50 pounds of pet food for $37.99?
Answers
If you could help me that will be amazing
Answers
Answer:B
Step-by-step explanation:first subtract 2x from
3x+2=2x+4 Both sides .subtract 2 from
-2 -2 Both sides.after divide 1x from 1x
1x+2=4 To cancel 1.divide 2 and 1.then
-2 -2 You will get 2.
1x=2
1 1
X=2
11d + 5f - 21d + 5 - 8
Answers
Answer:
d = -0.3 + 0.5f
Step-by-step explanation:
please help me answer this (and show steps)
thank you!
Answers
Answer:
it's easy hope I could help
Step-by-step explanation:
the -3 goes on the y line
4/3 goes on the positive side so on the y and x
Janice works at a lab with a huge circular particle accelerator. It has a radius of 2 miles. What
is the accelerator's diameter?
Answers
ILEGIT NEED HELP BADDDDDDD
Answers
Please restore my faith in humans and try to understand this concept
in a class of c children there are 16 boys what fraction of the class are boys
Answers
Answer:
16/c of the class are boys
Step-by-step explanation:
If there are a total number of children, c, and 16 of them are boys, you are going to put the total number of children on the bottom of the fraction as the denominator and put the number that are boys on top of the fraction as the numerator.
(I hoped this helped)
Answer:
Step-by-step explanation:
if the number of the children is c and we have 16 boys
the fraction will be c/16
which function represents the graph?
Answers
Answer:
y=3sin(x)
Step-by-step explanation:
The best way to check if it's right is to use a graphing calculator. The negative trigonometric functions are going upwards from 1pi to 2pi and the positive ones are going downwards from 1pi to 2pi. Since the cos sign is shifted two units left, we can assure that 3sin(x) gives the most accurate answer.
The cost of 18 notebooks at store j is $22.50. The notebooks at store j are all same price. The cost of notebooks at store k is shown on the graph below
Answers
Answer:
Where is the graph?
Step-by-step explanation:
22.50/18= 1.25
1.25 for each
please help. What is the solution to the system of equations below?
y = 3x – 2
X + y = 6
Answers
Answer:
A. (2,4)
Step-by-step explanation:
use the substitution method.
for the second equation, subtract x on both sides to get y = 6-x
substitute that into the first equation
6 - x = 3x - 2
add x on both sides: 6 = 4x-2
add 2 on both sides: 4x = 8
divide by 4: x = 2
y = 6-2 = 4
Answer:
A. (2, 4)
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Solving systems of equations using substitution/eliminationSolving systems of equations by graphingStep-by-step explanation:
Step 1: Define systems
y = 3x - 2
x + y = 6
Step 2: Solve for x
Substitution
Substitute in y: x + 3x - 2 = 6Combine like terms: 4x - 2 = 6Add 2 to both sides: 4x = 8Divide 4 on both sides: x = 2Step 3: Solve for y
Define original equation: x + y = 6Substitute in x: 2 + y = 6Subtract 2 on both sides: y = 4Step 4: Graph systems
Check the solution set.
help please and thankyou
Answers
Answer:
6
Step-by-step explanation:
By angle bisector property:
[tex] \frac{x}{8} = \frac{3}{4} \\ \\ x = \frac{3 \times 8}{4} \\ \\ x = 3 \times 2 \\ \\ x = 6[/tex]
Evaluate [(30 + 6) − 32] ÷ 9 ⋅ 2
Answers
Hope this helps!
Also can I please have Brainliest?
Only if I'm right of course...
Answer:
6
Step-by-step explanation:
Which expression is equivalent to 9x5 + 3x
3x(4x4 – 3x2)
?
A.48x9 – 24X6 +9x5 +9x4
B.48X9 +9X5-9x4
C.48x +36x5
D.48X9 - 72x7 +36x5
Answers
Answer:
i think the answer is B or D
evaluate 2 - (-4) + 3 + (-6) - (-2)
Answers
Answer:
5
Step-by-step explanation:
2 + 4 +3 - 6 +2
5
plz mark me brainliest
how do you find y-intercept of the line of a graph
Answers
Answer:
If you know what the formula y = mx +b is, then you know that mx is the slope and b is the y-intercept.
Let`s suppose the equation is y = 2x + 1. The line should be intersecting with the coordinate (0, 1) on it`s way across.
The y axis will ALWAYS be the vertical line. Whatever coordinate the line crosses on the y-axis is the y-intercept.
The y-intercept can also be a negative number.
Hope that helps. If you have any questions just comment them.
David is buying a cheese wheel priced at $14 before tax. The store charges 8% sales tax.
What is the total price, including tax, David pays for the cheese wheel?
Answers
Answer:
$15.12
Step-by-step explanation:
1. Find the total amount of sales tax. This can be done by multiplying the before tax price by the sales tax percentage.
14 x 8% = 1.12
2. Add the sales tax amount back to the price.
14 + 1.12 = $15.12
Please answer this for me!!!
Answers
Answer:
i can't answer because i dont see the whole problem
Step-by-step explanation:
130/5=26 per ticket
Explain 40 times 50 using mental math
Answers
Answer:
2000
Step-by-step explanation:
40 x 50 = 2000
(-13)x...x(-13)35 times
Answers
Answer: 5915 e m s t x ^2 I
Step-by-step explanation: Hope this help if not sorry I wasted your time
"
Use the following graph to determine the solution(s) of:
y= x^2- x - 6
Answers
Answer:
-2 and 3
Step-by-step explanation:
The x-intercepts or where the graph cuts the x-axis represents the zeros of y = x² - x - 6.
Thus, the zeros are -2 and 3. This is where the graph cuts the x-axis.
Therefore, the solutions of the graph are -2 and 3.
I need help
Help please
22 points
Answers
Answer:
$22.7325
Step-by-step explanation:
12.99 * 1.75 = 22.7325
pls mark brainliest
