Answers
Answer:
u = -10
Step-by-step explanation:
Hope this helps! I pray that you get it right and that I get brainliest plzzzz. Thanks!!
Related Questions
PLEASE HELP ME on #57 WITH ALL WORK SHOWN!!
Tmr is my exam pls help...
Answers
=========================================================
Explanation:
Recall that quadratic form is ax^2+bx+c.
So we need an x^2 term followed by an x term, then a constant at the end.
It may not look it, but the given equation is nearly in quadratic form.
Rewrite 9^(2x) as (9^x)^2
We get this equivalent equation (9^x)^2 - 2*(9^x) - 3 = 0
From here, let's make w = 9^x. Replace every copy of '9^x' with 'w' and we end up with this new simpler equation: w^2 - 2w - 3 = 0
From here we can use the quadratic formula or factor. I'll factor.
w^2 - 2w - 3 = 0
(w - 3)(w + 1) = 0
w-3 = 0 or w+1 = 0
w = 3 or w = -1
---------------------
Now we use these values of w to find x
If w = 3, then,
w = 9^x
3 = 9^x
log(3) = log(9^x)
log(3) = x*log(9)
x = log(3)/log(9)
x = log(3)/log(3^2)
x = log(3)/(2*log(3))
x = 1/2
At the last step, we have the log(3) terms cancel.
Repeat for w = -1
w = 9^x
-1 = 9^x
log(-1) = log(9^x)
We run into a problem. The log of any negative number is not a real number output. In other words, 9^x is never negative. Raising any positive number to a real number output leads the result to be positive. Take a look at the graph of y = 9^x to confirm this.
In short, w = -1 is extraneous so it doesn't lead to any x value solution.
So only w = 3 is useful.
Ultimately, the only solution is x = 1/2.
Graph each function. State the domain and range.
f(x)={(-x-2 if x>0),(-x if x<=0):}
Please help me will give brainillest is work is shown. thank you !!!
Answers
9514 1404 393
Answer:
see attached
Step-by-step explanation:
For values of x less than zero, the graph of the function is a graph of the line
y = -x
Because the function is defined by this expression at x=0, there will be a solid dot at the end of the line there, at (0, 0).
__
For values of x greater than 0, the graph of the function is a graph of the line
y = -x -2
This line has the same -1 slope as before, but has a y-intercept of -2. The function is not actually defined as (0, -2), so there is an open circle at the end of the line there.
Mini muffins are also sold at Muffin Mart. Each mini muffin is sold for $0.35. Diego has $3.00 for mini muffins. How many mini muffins can he buy with $3.00? *
Answers
Answer:
I agree with both.
Step-by-step explanation:
If it's $3 per dozen that would be $0.25 per muffin because
3÷ 12 = 0.25
And if Andre has $2 than he can only afford 8 muffins because
0.25 x 8 = 2
And if Elena wants 16 muffins
16 x 0.25 = 4
So she will have to pay $4.
Hope this makes sense and helps!
△JLK∼△PQR. Find the value of x.
Answers
Answer:
x = 30 is the answer
Step-by-step explanation:
proportions
42.5 subtract 7.32? Please help me with his question?
Answers
Step-by-step explanation:
42.4
-
7.32
----
move the decimal
42.40
07.32
-------
35.08
Linda had a previous balance of $1,000 and made an on-time credit card payment of $800. She has a credit line of x dollars and made purchases totaling y dollars. Write an algebraic expression that represents her current available credit.
Answers
Answer:
[tex]x-200+y[/tex]
Step-by-step explanation:
We can determine the algebraic expression that represents her current available credit by first finding her new balance using the formula:
Previous balance - Payments + Total Purchases = New balance
where, previous balance = $1000; payments = $800; total Purchases = y
New balance = [tex]1000-800+y[/tex]
Next, to find her Credit balance or current available; we use the formula; Credit line - New balance
where credit balance = x; new balance = [tex]1000-800+y[/tex]
Current available credit = [tex]x-200+y[/tex]
Please answer, fifteen pts!
8x -4 < -36.
Please explain/show work!
Answers
8x < -36 + 4 <=>
8x < -32 <=>
x < -32/8 <=>
x < -4
40.54-29.63
Math problem
Hey
Answers
Answer:
10.91
Step-by-step explanation:
40.54-29.63= 10.91
BRAINLIEST ARE ALWAYS APPRECIATED :)
Answer:
10.91
Step-by-step explanation:
40.54
- 29.63
_______________
10.91
PLS HELP TON OF POINTS AND BRAINLIEST
Answers
Answer:
sss axiom
Step-by-step explanation:
Answer:
wa pow
Step-by-step explanation:
find the inverse of this function and verify by using the composition of functions
f(x)= -3/x-3
Answers
Answer:
f(x)^-1 = 3x-3/x
Step-by-step explanation:
f(x) =-3/x-3
y= -3/x-3
x=-3/y-3
-3= (y-3)x
-3= xy-3x
-xy=-3x + 3
y= -3x +3/x
y= 3x-3/x
f(x)^-1 = 3x-3/x
why is b the answer ???????????????????/
Answers
Answer:
Step-by-step explanation:
its b cuz when u replace any value of x from B to the equation, the value of y satisfies the values of y in B. For instance
y = 4 * -3 + 2
= -10
the value of y is -10 which satisfies the value of y in B but when u use a value of another table suppose A it would be,
y = 4 * 7 + 2
= 30
but the value y corresponding to the value of x we used is not 30
HOPE IT HELPED
Enter a range of values for x.
Answers
What is the length of BC, given that figure ABCD is a rectangle?
PLZ Help
Answers
What is the value of the expression
s(8-2)/t
when s=0.5 and t= 2
A 0.5
B 1
C 1.5
D 2
Answers
Answer:
C. 1.5
Step-by-step explanation:
replace the values in the equation with the values given.
Answer:
I think it will be C. 1.5
evaluate: 1: 80-4(2)divided by 8. 2: 92.3-(3.2 divided by 0.4) x 2(3) 3: {(2(3) x2.5) divided by 1/2} + 120. 4: [20+(2.5x3)]-3(3). 5: [(2x 10(0)) divided by 1/3] +8
Answers
Cari is searching online for airline tickets. Two weeks ago, the cost to fly from Boston to Denver was $225. Now the cost is $300. What is the percent increase? What would be the percent increase if the airline charges an additional $50 baggage fee with the new ticket price?
Answers
Answer:
33.33% increase. 55.56% increase.
Step-by-step explanation:
this is kinda confusing can someone help explain!!
Answers
Answer: all i can say is this for an edu guess
2 6 and 4 would be 40 or 30
3 5 and 7 would be 110 or 120
8 would be 20 or 10
also this was the first answer
Answer:
0
Step-by-step explanation: Angle 1 and 3 would be equal to 110 degrees because they are vertical
Angle 2 would be 70 degrees because a straight line is 180 degrees so you do 180 - 110 to get 70 degrees for angle 2
Angle 4 would be the same as angle 2 since they are vertical so angle 4 is 70 degrees
Angle 5 is corresponding to 1 so they will have the same angle
Angle 6 is corresponding to 2 so they will have the same angle
Angle 7 is vertical to 5 so they will have the same angle
Angle 8 is vertical to 6 so they will have the same angle
Angle 1 - 110
Angle 2 - 70
Angle 3 - 110
Angle 4 - 70
Angle 5 - 110
Angle 6 - 70
Angle 7 -110
Angle 8 -70
Lol sorry this took long to type hope this helps dude ! ^-^
plz help me with this i´ll cashapp you 10$
Answers
Answer:
B, C, D, F, H, J, K
Step-by-step explanation:
all those that I put are right I promise
hope this helped
Answer:
ABC = DEF
CBA = FED
B = E
C = F
A = D
AB = ED (actually, AB = DE ;w;)
AC = DF
CB = FE
Step-by-step explanation:
Solve the following problem. Choose the correct answer. Fairhaven Church buys four tires for its van. Each tire is priced at $43.95. The tire store offers churches a 3.5% discount. How much does Fairhaven Church pay in all? The church pays $ total.
Answers
Answer:
169.65
Step-by-step explanation:
43.95x4= 175.80 175.80x3.5=6.15 175.80-6.15=169.65
On one particular day, Jamal arrived late to find four other co-workers waiting for him to arrive. They were unable to do other work because they had made arrangements to have their position covered and to work with Jamal on a special project. Nothing could be done until he got there. The other workers earned wages as followed: Derek earns $10.00/hr; Sam earns $11.80/hr; Penny earns $11.00/hr and Zachary earns $13.00/hr. How much was lost in unproductive wages because Jamal arrived 15 minutes late?
Answers
Answer: $11.45
Step-by-step explanation:
Arriving 15minutes late simply means 15/60 = 1/4 of the wages has been lost. We then multiply 1/4 by each person's wage. This will be:
Derek = 1/4 × $10.00
= $2.50
Sam = 1/4 × $11.80
= $2.95
Penny = 1/4 × $11.00
= $2.75
Zachary = 1/4 × $13.00
= $3.25
The amount lost will be:
= $2.50 + $2.95 + $2.75 + $3.25
= $11.45
What is 2/5 ÷ 1/10 = ?
Answers
Write an equation in slope-intercept form of the line that passes through (0,6) and (3, -3).
Please help :(
Answers
Answer:
y=-3x+6
Step-by-step explanation:
(y-y1)=m(x-x1)
m=(y2-y1)/(x2-x1)
m=(-3-6)/(3-0)
m=(-9)/(3)
m=-3
(choose whichever point for the first formula, i will be using(0,6))
(y-6)=-3(x-0)
y-6=-3x
y=-3x+6
PLEASE HELP!! WILL GIVE BRAINLIEST PLUS 30 POINTS IF CORRECT!!
Answers
Simplify (9.5)(−2)(−5). (1 point)
Answers
Answer:
95
Step-by-step explanation:
I hope this help
(-19)×(-5)
Which point is located at
2.15?
PLEASE HELP IN 30 MINUTES
Answers
Answer:
it is a
Step-by-step explanation:
Answer:
a
Step-by-step explalan
Jeff bought 1.5 pounds of pork and 2.5 pounds each of beef and chicken. What was the total cost of the meat Jeff bought? Type of Meat Cost per Pound Beef $5.99 Chicken $4.79 Pork $3.64 Drag the numbers to complete the statement about what you need to find. Numbers may be used once, more than once, or not at all. 3.5231.52.514 Find the total cost of pounds of beef, pounds of chicken, and pounds of pork.
Answers
Answer:
$32.41
Step-by-step explanation:
Given that:
[tex]\begin{center}\begin{tabular}{ c c }Type of Meat & Cost per pound \\Beef & \$5.99 \\Chicken & \$4.79\\Pork & \$3.64\\\end{tabular}\end{center}[/tex]
Amount of pork bought by Jeff = 1.5 pounds
Amount of beef bought by Jeff = 2.5 pounds
Amount of chicken bought by Jeff = 2.5 pounds
Cost of number of pounds of each type of meat bought by Jeff can be calculated by multiplying the number of pounds by the cost of each type per pound.
Cost of pork for 1.5 pounds = 1.5 [tex]\times[/tex] 3.64 = $5.46
Cost of beef for 2.5 pounds = 2.5 [tex]\times[/tex] 5.99 = $14.975
Cost of chicken for 2.5 pounds = 2.5 [tex]\times[/tex] 4.79 = $11.975
Total cost = Cost of pork + Cost of beef + Cost of chicken = 5.46 + 14.975 + 11.975 = $32.41
Round to the nearest whole number
74.64
Answers
what is the greatest factor (GCF) of 66 and 22
Answers
Answe
22 is your answers ....
Hey guys i need help asap, here’s the problem (j-5)(5)
Answers
Answer:
5j-25
Step-by-step explanation:
Answer:
5j - 25
Step-by-step explanation:
Distribute #5 among j and -5
ILL MARK AS BRAINLESS PLS HELP
Answers
Answer:
5765/574
Step-by-step explanation:
there u go lol