Answers
Answer:
Pretty sure it is C
Step-by-step explanation:
Related Questions
Factor as the product of two binomials
(x^2 - 10x + 21)
Answers
Answer:
Step-by-step explanation:
x^2-10x+21
(x-7)(x-3)
find the 2 numbers that when multiplied make the last number or +21 and when combined make the middle number of -10. -7*-3 = 21 and -7+-3=10
Answer:
(x - 7)(x - 3)
Step-by-step explanation:
Given
x² - 10x + 21
Consider the factors of the constant term (+ 21) which sum to give the coefficient of the x- term (- 10)
The factors are - 7 and - 3 , since
- 7 × - 3 = + 21 and - 7 - 3 = - 10, thus
x² - 10x + 21 = (x - 7)(x - 3) ← in factored form
What is the rate of change of y with respect to x for 25x-4y=50
Answers
Answer:
The rate of change is y with respect to x is [tex]\frac{25}{4}[/tex]
Step-by-step explanation:
Given
[tex]25x - 4y = 50[/tex]
Required
Determine the rate of change of y w.r.t x
[tex]25x - 4y = 50[/tex]
First, make y subject of formula
[tex]4y = 25x- 50[/tex]
Divide through by 4
[tex]y = \frac{25x}{4} - \frac{50}{4}[/tex]
[tex]y = \frac{25x}{4} - 12.5[/tex]
Next, we differentiate the above w.r.t to x
The result of the differentiation is the solution to the question
[tex]y' = 1 * \frac{25x^{1-1}}{4} -0[/tex]
[tex]y' = 1 * \frac{25x^0}{4}[/tex]
[tex]y' = 1 * \frac{25*1}{4}[/tex]
[tex]y' = \frac{25}{4}[/tex]
Hence, the rate of change is y with respect to x is [tex]\frac{25}{4}[/tex]
By calculating derivative of y with respect to x we got rate of change of y with respect to x for 25x-4y=0 is 25/4
What is derivative?Rate of change of a function with respect to a variable is called derivative of that function with respect to that variable .
Here given relation is 25x-4y=0
[tex]\Rightarrow 4y=25x\\\\\Rightarrow y=\frac{25x}{4}[/tex]
We have to calculate rate of change of y with respect to x so we will calculate derivative of y with respect to x.
we can calculate derivative of y with respect to x as
[tex]\frac{dy}{dx}= \frac{d}{dx} (\frac{25x}{4})\\\\[/tex]
As 25/4 is constant we can take it out from derivative function as it is
[tex]\frac{dy}{dx}= (\frac{25}{4})\frac{dx}{dx}\\\\[/tex]
And we know derivative of a variable with respect to itself is 1
so
[tex]\frac{dy}{dx}= (\frac{25}{4})\times 1\\\\ \frac{dy}{dx}= \frac{25}{4}[/tex]
By calculating derivative of y with respect to x we got rate of change of y with respect to x for 25x-4y=0 is 25/4
To learn more about derivative visit: https://brainly.com/question/25081524
make a the subject of this formula:
p=n^2+a/n+a
Answers
Step-by-step explanation:
we multiply both sides by the denominator on the right to eliminate fraction, so we have..
p*(n+a)= (n²+a/n+a)*n+a
so we have
p(n+a)= n²+a
so opening the bracket on the left hand side we have,
p*n+p*a
pn+pa
so,
pn+pa= n²+a
so collecting like terms we have,
pn-n²= a-pa
so removing a from the equation on the right hand side we have,
pn-n²=a(1-p)
dividing both sides by the equation in the bracket on the right hand side, we have..
pn-n²/(1-p)= a
a = pn-n²/1-p
or
a = n(p-n)/1-p
Evaluate 2y²(x + y) when x = 1 and y = 5.
Answers
Answer:
300
Step-by-step explanation:
Evaluate 2 y^2 (y + x) where x = 1 and y = 5:
2 y^2 (y + x) = 2×5^2 (1 + 5)
Hint: | Evaluate 1 + 5.
1 + 5 = 6:
2×5^2×6
Hint: | Evaluate 5^2.
5^2 = 25:
2×25×6
Hint: | Multiply 2 and 25 together.
2×25 = 50:
50×6
Hint: | Multiply 50 and 6 together.
50×6 = 300:
Answer: 300
please answerrrr, its not that hard i dont think lol, i j dont know it :)
Answers
Not a function.
It's conic section parabola. It's just a relation.
Jada earns twice as much money per hour as Diego. Diego earns twice as much money per hour as lin. Select all the graphs that could represent how much Jada, diego, and lin earn for different amounts of time worked.
Answers
Answer:
1 and 3Step-by-step explanation:
Let functions be
Jada = f(j)Diego = f(d)Lin = f(l)As per given ratios:
f(d) = 2f(l)f(j) = 2f(d) ⇒ f(j) = 4f(l)The smallest slope belongs to f(l), greater - f(d), the greatest - f(j)
Possible graphs reflecting the functions are graph 1 and graph 3
someone please help !!!
Answers
Explanation: I multiplied
Matilda is selling hand-painted vases at a craft fair. She will
have to pay $200 to rent a booth at the fair. The cost of the
paint and other materials to create each vase is $5.50. She is
going to sell each vase for $14.00.
Part 1. Write an inequality to represent the situation in which
Matilda makes a profit. You must define any variable(s) you
use.
Part 2. How many vases must Matilda sell to make a profit?
Explain your reasoning.
Answers
Answer:
14x>200+5.5, She must sell 15 or more vases
Step-by-step explanation:
14x>200+5.5
14x>200+5.5
14x>205.5
x>14.68*
She must sell 15 or more vases
*You round up because you cannot sell a partial vase
Answer:
14v > 200 + 5.50v, she will have to sell 24 vases to make a profit
Step-by-step explanation:
It costs $5.50 PER VASE for materials, so you would subtract this from what she sells each vase for. 14 - 5.50 = 8.50. She makes an $8.50 profit per vase sold. We can write 8.50n > 200 to show her profit margin minus the booth fee. If she sold 24 vases, she would be making a profit and this would represent the lowest amount of vases she can sell to make a profit. We can write the inequality 24 ≤ n to show that she can sell 24 vases or more to make a profit.
14n > 200 + 5.50n
336 > 332, true
n > 23
Hope This Helps!
write in slope form 2y = 24
Answers
Answer:
y = 12
Step-by-step explanation:
The equation of the expression is given as;
2y = 24
We are to write in slope form';
In slope form, an equation is expressed as;
y = mx + c
where y and x are the intercept
m is the slope
c is the intercept
Now to write 2y = 24 in intercept form, we have;
2y = 24
divide both sides by 2;
y = 12
Which piecewise function is shown in the graph?
Answers
Answer:
The piecewise function is shown in the graph is
f(x) = -0.5x + 1, x < 0 2x - 2, x ≥ 0 ⇒ AStep-by-step explanation:
At first, you must find the equation of each line
The form of the equation of the line is f(x) = m x + b, where
m is the slope of the line which = Δy/Δxb is the y-intercept which is the y-coordinate of the point of intersection between the line and the y-axisFrom the graph
∵ The line to the left intersects the y-axis at point (0, 1)
∴ b = 1
∵ The line passes through points (0, 1) and (-2, 2)
∴ Δx = -2 - 0 = -2
∴ Δy = 2 - 1 = 1
→ Use them to find the value of m
∵ m = Δy/Δx
∴ m = [tex]\frac{1}{-2}[/tex]
∴ m = -0.5
→ Substitute the values of m and b in the form of the equation above
∴ f(x) = -0.5x + 1
∵ The domain of the function is the values of x
∵ The line starts with an empty circle
→ That means x = 0 does not belong to the domain
∴ The sign of inequality is < without equal
∴ The domain of f(x) is x < 0 ⇒ all values less than 0
∵ We have only one answer has f(x) = -0.5x + 1, x < 0
∴ The graph represents the first answer A
∴ The piecewise function is shown in the graph is
f(x) = -0.5x + 1, x < 0 2x - 2, x ≥ 0Answer:
a
Step-by-step explanation:
Help asap
A local hamburger shop sold a combined total of 555 hamburgers and cheeseburgers on Saturday. There were 55 more cheeseburgers sold than hamburgers. How many hamburgers were sold on Saturday?
Answers
Answer:
There were 250 hamburgers sold on Saturday.
Step-by-step explanation:
∵ A local hamburger shop sold a combined total of 555 hamburgers
and cheeseburgers on Saturday
→ Assume that the shop sold x hamburgers
∵ The shop sold x hamburgers
∵ There were 55 more cheeseburgers sold than hamburgers
→ That means the number of cheeseburgers is greater than the
number of hamburger by 55
∴ The shop sold x + 55 cheeseburgers
∵ The shop sold 555 burgers
→ Add the two types of burgers and equate the sum by 555
∴ x + x + 55 = 555
∴ 2x + 55 = 555
→ Subtract 55 from both sides
∴ 2x + 55 - 55 = 555 - 55
∴ 2x = 500
→ Divide both sides by 2 to find x
∵ [tex]\frac{2x}{2}[/tex] = [tex]\frac{500}{2}[/tex]
∴ x = 250
∵ x represents the number of hamburgers
∴ There were 250 hamburgers sold on Saturday.
А ____________ is a comparison of two quantities by division.
A. Unit Rate
B. Rate
C. Ratio
Answers
Answer:
Rate
Step-by-step explanation:
When you have two quantities and place one over the other, i.e. miles/hour, you get a rate, such as a rate of change .
If -3d + 5 = -3 , then 3d - 9 =
Answers
Answer:
-3d+5=-3 is d=8/3
3d-9 is (d-3)
Step-by-step explanation:
what calculates the slope of a line from two coordinate points from that line?
Answers
Answer:
The slope of a line characterizes the direction of a line. To find the slope, you divide the difference of the y-coordinates of 2 points on a line by the difference of the x-coordinates of those same 2 points .
4y - 9 - 6y = 2(y + 5) - 3 solve for y
Answers
Write the slope intercept
Answers
Answer:
It would be 2x -5=y
Step-by-step explanation:
The equation for the two points is 2x -5=y so the slope intercept would be 2x -5=y
what is the lcm for 10 and 5
Answers
Answer:
15
Step-by-step explanation:
10 and 5 can go in 15.
You could also use 5.
Answer:
10
Step-by-step explanation:
The mass of the copper cube is 90 grams, the mass of the gold cube is 193 grams, and the mass of the silver cube is 105 grams. Which shows the metals in order from the lowest density to the greatest density?
Answers
Answer: copper, silver, gold
Step-by-step explanation:
Answer:
copper siver gold
Step-by-step explanation:
i had this question too
Which number is equivalent to 46/3?
Answers
Answer: 15.3 (with a repeating bar over the 3)
Answer:
15.3333
Step-by-step explanation:
i think it is that because its reocurring
An adult ticket to a school play cost $5 and a student ticket cost $3. $460 dollars was collected and 120 tickets were sold. How many student tickets were sold?
Answers
5(x + y = 120)
5x + 5y = 600
Use elimination subtraction
-2y = -140
y = 70
There are 70 student tickets
Steven charges the following for repairing washing machines:
£24 call-out charge + £14 for each half-hour he spends on the repair
if a repair costs a customer £66, how long did it take?
Answers
66 - 24 = £42
42 / 14 = 3 hours
A rancher raises five as many cows as horses. If he has 168 cows and horses, how many cows does he have? Complete the equations below, and then use substitution to solve. Let c represent the number of cows and h represent the number of horses Equation 1: c=_h Equation 2: c+h=_
Answers
Answer:
There are 28 horses and 140 cows
Step-by-step explanation:
Given
Animals: Cows and Horses
Represent Cows with c and Horses with h
For the first equation, we complete it as thus:
[tex]c = 5h[/tex]
This is so because there are 5 times as many c as h
The second equation will be completed as:
[tex]c + h = 168[/tex]
This is so because the total animals are 168
So, we have:
[tex]c = 5h[/tex]
[tex]c + h = 168[/tex]
Substitute 5h for c in the second equation
[tex]c + h = 168[/tex]
[tex]5h + h = 168[/tex]
[tex]6h= 168[/tex]
Solve for h
[tex]h = 168/6[/tex]
[tex]h = 28[/tex]
Recall that:
[tex]c = 5h[/tex]
[tex]c = 5 * 28[/tex]
[tex]c = 140[/tex]
Hence, there are 28 horses and 140 cows
If 500g of a material goes through four half-lives, how much material will be left? Round to two decimal places.
A. 125g
B. 62.5g
C. 250g
D. 31.25g
Answers
I might be wrong.
whats the answer im stuck ( -___-)
Answers
Answer:
(6r+7)+(13+7r)=13r+20
(13-1/2r)-(1-r)=12-1/2r
(-8-r)+(2r-4)=-12+r
Last one is r-13/6
Step-by-step explanation:
What is the equation of the line that has a slope of -6/5 and goes through the point (5, -4)?
Answers
y=-6/5x+2
Explanation:
Our equation will be in slope intercept form: y=mx+b . Here’s what the variables mean:
Y=the y-coordinate
M=the slope
X=the x-coordinate
B=the y-intercept (the point on the line that intercepts the y-axis)
We already know m, the slope, and that is -6/5. Plugging this in, our equation so far looks like this:
y=-6/5x+b
All we need to find now is the value of b, and we can do that by plugging in the x and y coordinates of the point (5,-4).
y=-6/5x+b
-4=-6/5(5)+b
-4=-6+b
Add 6 to both sides
-4+6=-6+b+6
2=b
Now, after plugging this in, the equation of the line would be y=-6/5x+2.
I hope this helps!
What is 1.19047619048 as a fraction
Answers
Answer: 1.19047619048 as a fraction equals 119047619048/100000000000
Step-by-step explanation: To write 1.19047619048 as a fraction you have to write 1.19047619048 as numerator and put 1 as the denominator. Now you multiply numerator and denominator by 10 as long as you get in numerator the whole number.
1.19047619048 = 1.19047619048/1 = 11.9047619048/10 = 119.047619048/100 = 1190.47619048/1000 = 11904.7619048/10000 = 119047.619048/100000 = 1190476.19048/1000000 = 11904761.9048/10000000 = 119047619.048/100000000 = 1190476190.48/1000000000 = 11904761904.8/10000000000 = 119047619048/100000000000
Answer:
119047619048/100000000000
Step-by-step explanation:
To write 1.19047619048 as a fraction you have to write 1.19047619048 as numerator and put 1 as the denominator. Now you multiply numerator and denominator by 10 as long as you get in numerator the whole number. And finally, we have: 1.19047619048 as a fraction equals 119047619048/100000000000
45 Minutes+35 minutes+35 minutes=
Put it in hour and minutes not just minutes
Answers
Answer:
1 hour 55 minutes
Step
Answer:
1:55..
Step-by-step explanation:
The point-slope form of the equation of the line that passes through (-5, -1) and (10,-7) is
Y+ 7 = -
-- (x-10). What
is the standard form of the equation for this line?
O 2x - 5y = -15
2x - 5y = -17
2x + 5y = -15
2x + 5y = -17
Save and Exit
Answers
Answer:2x-5y=-15
Step-by-step explanation:
Human cells come in a wide variety of shapes and sizes. The
mass of an average human cell is 2 x 10-11. Write this number in
standard form.
Answers
Answer:
2
Step-by-step explanation:
boris's super metal detector not only helped him win the science fair but also helped him find $6.20 in nickels and dimes yesterday morning. If boris found 14 more dimes than nickels, how many nickels did he find
Answers
Answer:
32 Nickels
Step-by-step explanation:
Given
Coins: Nickels (N) and Dimes (D)
$0.05 = 1 nickel and $0.10 = 1 dime
So, the amount implies:
[tex]0.05N + 0.10D = 6.20[/tex]
The number of coin implies:
[tex]D = 14 + N[/tex]
Required
Determine the number of nickels found
Substitute 14 + N for D in [tex]0.05N + 0.10D = 6.20[/tex]
[tex]0.05N + 0.10(14 + N) = 6.20[/tex]
[tex]0.05N + 1.4 + 0.10N = 6.20[/tex]
Collect Like Terms
[tex]0.05N + 0.10N = 6.20 - 1.4[/tex]
[tex]0.15N = 4.8[/tex]
Solve for N
[tex]N = 4.8/0.15[/tex]
[tex]N = 32[/tex]
Hence, he found 32 nickels
