Algebra help!
If you can also explain that would be appreciated!! If not that's totally okay I just really need the help!!
Answer:
We have the value as;
8x/5
Step-by-step explanation:
Here, we want to get the breakdown of the given expression
We have (x^2 - 9) as (x-3)(x + 3)
So we have;
2x/(x + 3) * (x-3)(x+3)/5 * 4/(x-3)
= 2x * 4/5= 8x/5
The bill for dinner totaled $56 before tax and tip. The restaurant added a 6 percent sales tax. If Sandra wants to include a 16 percent tip calculated on the bill before sales tax is added, what is the total cost of the dinner?
$59.36
$64.96
$68.32
$68.86
Anyone know how to solve this? Im losing brain cells
Answer and Step-by-step explanation:
The answer is A.
y = x + 2 and y = -2x + 4
This is because:
- The graph going from left to right matches the first equation, in which the graph has a slope of 1 and has a y-intercept at (0, 2).
- The graph going from right to left matches the second equation, in which the graph has a slope of -2 (Since it is going from right to left), and has a y-intercept at (0, 4).
#teamtrees #PAW (Plant And Water)
Two opposite numbers are 4 units away from each other. What are the numbers?
Answer: 2 & -2
Step-by-step explanation: it takes 2 units to get to 0 and then 2 more to get to -2
The center of a circle is (0, -8). The radius is 9. What is the equation of the circle? Select all that apply.
A. x2 + (y + 8)2 = 3
B. x2 + (y + 8)2 = 9
C. x2 + (y + 8)2 = 81
D. x2 + y2 + 16y = 17
E. x2 + y2 + 16y = -55
Answer:
x² + (y + 8)² = 81
Step-by-step explanation:
Centre (h,k) = (0,-8)
radius (r) = 9
(x - h)² + (y - k)² = r²
(x - 0)² + (y + 8)² = 9²
x² + (y + 8)² = 81
suppose a city with population 400,000 has been growing at a rate of 8% per year. If this rate continues, find the population of this city in 25 years
pls pls help ASAP ill give brainliest!!!!!!!!!!!!
A training field is formed by joining a rectangle and two semicircles, as shown below. The rectangle is 81m long and 58m wide.
Find the area of the training field. Use the value 3.14 for, and do not round your answer. Be sure to include the correct unit in your answer.
Answer:
12989.9236 m
Hope this helps!!!
Jim gives the cashier a $20 bill at the pharmacy.
Write an equation that relates the change c he gets back in dollars to the cost b, in dollars, of his purchases. Which variable represents the independent variable? How much change does he get back if his purchases total $12.83?
Answer:
b= 12.83
c= 7.17
Variable "c" is independent because it does not change. Jim receives $7.17 back.
The floor of a cargo truck is 22 1/2 square feet. What is the volume of the storage space in cubic feet if the truck is 7 1/5 feet high? Show, label, and explain your work.
Answer:
162 ft^3
Step-by-step explanation:
volume = area of base * height
V = 22 1/2 ft^2 * 7 1/5 ft
Change the mixed numerals into fractions.
V = 45/2 ft^2 * 36/5 ft
Multiply the fractions.
V = 45/2 * 36/5 ft^3
Switch the denominators.
V = 45/5 * 36/2 ft^3
Simplify each fraction.
V = 9 * 18 ft^3
V = 162 ft^3
A product you carry has a shelf life of 90 days. You purchased it September 5. Is it still good December 31?
Answer:
no, 90 days after september 5 is december 4
Step-by-step explanation:
ANSWER: 2790A
Step-by-step explanation: 90,\:5,\:31 =2\cdot \:45 45\:\mathrm{divides\:by}\:3\quad \:45=15\cdot \:3 =2\cdot \:3\cdot \:15 15\:\mathrm{divides\:by}\:3\quad \:15=5\cdot \:3 =2\cdot \:3\cdot \:3\cdot \:5 2,\:3,\:5\mathrm{\:are\:all\:prime\:numbers,\:therefore\:no\:further\:factorization\:is\:possible} =2\cdot \:3\cdot \:3\cdot \:5 =2\cdot \:3\cdot \:3\cdot \:5\cdot \:31 \mathrm{Multiply\:the\:numbers:}\:2\cdot \:3\cdot \:3\cdot \:5\cdot \:31=2790 =2790 \mathrm{Compute\:an\:expression\:comprised\:of\:factors\:that\:appear\:in\:at\:least\:one\:of\:the\:factored\:expressions} =2790A
sin 0 = cos 0 when 0=_____
degrees.
Answer:
0
Step-by-step explanation
Because sin 0 = cos 0 when 0 = 0 degrees because it wouldn't change it would stay the same so it's just 0 cause it's to the 0 power.
Need answers asap please help! :)
Given the function h(x)=-x^2+4x+12, determine the average rate of change of the function over the interval −2≤x≤4.
Answer:
2
Step-by-step explanation:
The average rate of change of h(x) in the closed interval [ a, b ] is
[tex]\frac{f(b) - f(a)}{b-a}[/tex]
Here [ a, b ] = [ - 2, 4 ] , then
f(b) = f(4) = - (4)² + 4(4) + 12 = - 16 + 16 + 12 = 12
f(a) = f(- 2) = - (- 2)² + 4(- 2) + 12 = - 4 - 8 + 12 = 0
Then
average rate of change = [tex]\frac{12-0}{4-(-2)}[/tex] = [tex]\frac{12}{6}[/tex] = 2
13 1/3 of a number is 30. find the number
A. 225
B. 223
C. 456
D. 552
Answer:
a
Step-by-step explanation:
1/3 is one third and times by 30
PLZ HELP To multiply (7x+3)(7x−3),
you can use the pattern:
(a+b)(a−b)=a2−b2.
What are the values of a and b?
Enter your answers in the boxes below.
a=
b=
Answers:
a = 7xb = 3==========================================================
Explanation:
Match up (7x+3)(7x-3) with (a+b)(a-b)
We have
(7x+3) pair up with (a+b)(7x-3) pair up with (a-b)We can see that a = 7x and b = 3
Furthermore, we can say,
(a+b)(a-b) = a^2 - b^2
(7x+3)(7x-3) = (7x)^2 - (3)^2
(7x+3)(7x-3) = 49x^2 - 9
The values of a and b are 7x and 3 respectively
(7x+3) (7x−3)
Using the format
Factorisation(a + b)(a − b) = a² − b²
Therefore,
a = 7x
b = 3
Therefore,
From (a + b)(a − b) = a² − b²
(7x+3) (7x−3) = (7x)² - 3²
(7x+3) (7x−3) = 49x² - 9
learn more on factorisation here: https://brainly.com/question/22190900
work out the circumference of a cirlce with a diameter of 1.8m
Answer:
5.56 m
Step-by-step explanation:
Circumference = 2πr
r is the radius, however the diameter is given. The radius is half the diameter. So the radius is:
1.8 ÷ 2 = 0.9
Circumference = 2 × π × 0.9
= 5.56 m ( in 3 significant figures )
help!! ________________
Answer:
NNNNNNNNNNNOOOOOOOOOOOOOOOOO i won't help you
Step-by-step explanation:
pls help with this math question
Answer:
7:10
Step-by-step explanation:
Answer:
4/1
Step-by-step explanation:
PLEASE HELP MY SIS IS BREAKING DOWN CRYING
Using the function provided, evaluate f(1).
Answer choices
7
3
1
4
Answer:
f(1) = 4
Step-by-step explanation:
f(1) means let x=1 and find the y value at that point on the graph
At x=1 there is an open circle and a closed circle. The open circle means that the function does not have a value at that point, so we use the closed circle
f(1) = 4
How many faces does the following shape have?
Answer:
6 faces. pls mark brainliest
write an equation of the line that passes through the point (0,3) and whose slope is 2
Answer:
y - 2x = 3
Step-by-step explanation:
Use the point-slope formula y - k = m(x - h), with h = 0, k = 3 and m = 2:
y - 3 = 2(x - 0), or
y - 3 = 2x, or
y - 2x = 3
Note that the given point, (0, 3), is the y-intercept of this line, and so we immediately know b in y = mx + b: it is 3.
Can someone help me!!! Which of the following tables represent(s) an exponential function? List
all correct answers.
a.
X| 0, 1, 2, 3
Y| 0, 0, 0, 0
b.
X| 0, 1, 2, 3
Y| 1, 1, 1, 1
c.
X| 0, 1, 2, 3
Y| 2, 4, 8
d.
X|0, 1, 2, 3
Y|1, -1, 1, -1
y
e.
X| 0, 1, 2, 3
y |1, 2, 3, 4
Answer:
C
Step-by-step explanation:
exponential functions multiply
Mark has a bag with different flavors of candy. The bag contains 4 cherry, 3 lemon, 7
watermelon, and 2 grape candies. Which of the following shows the complement of
selecting a grape candy?
7
Answer:
Dum dum
Stu Stu
Step-by-step explanation:
10 points PLEASE HELP
Answer:
170
Step-by-step explanation:
If you look at the other angle it says 20 and a whole circle would be 360 so subtract 360-130 then after that since the angle takes 2 part or however you may say that means u subtract 60 (20+20+20 thee open angle) this means you get 170 (i think im unsure but you can try)
Solve for x if -10x + 67 = 17
A) x=4
B) x= -50
C) x=5
D) x=10
Answer:
x=5
Step-by-step explanation:
First off, you need to subtract 67 from 17 to get the variable alone.
That will leave you with -10x=-50
Then you need to divide -10 and -50,
Two negatives make a positive so
x=5
Answer is C
For a luxury doughnut producer the average selling price is £2. The average variable cost is 40% of the selling price and its fixed cost per day is £300. Calculate total costs per day assuming it produces 400 doughnuts per day.
Answer:
620
Step-by-step explanation:
selling 400 doughnuts means selling 800 £ worth of doughnuts. 800 x 0.4 ( to find 40 percent) = 320, + 300 because the the fixed cost = 620. :)
The total cost per day of producing 400 doughnuts is £620.
The total cost of producing doughnuts is the sum of fixed cost and variable cost. Fixed cost is the constant that remains constant regardless of the amount of doughnuts made. Variable cost is the cost that varies with the number of doughnuts made.
Total cost = fixed cost + variable cost
Fixed cost = £300
Variable cost = average variable cost x number of output
Average variable cost = 40% x £2
= 0.40 x £2 = 0.80
Variable cost = £0.80 x 400 = £320
Total cost = £320 + £300 = £620
A similar question was answered here: https://brainly.com/question/22122701
hey guys plz give me answer fast
Answer:
(ii) 10 (A)
(iii) 45° (B)
(Iv) 3:4 (B)
What is the perimeter of a square whose area is 289 square feet?
A. 17 feet
B. 48 feet
C. 68 feet
D. 73 feet
Answer:72.25
Step-by-step explanation:
What is the approximate area of the shaded sector?
A. 38 cm2
B. 96 cm2
C. 302 cm
D. 603 cm?
Answer:
C. [tex] 302 \: {cm}^{2} [/tex]
Step-by-step explanation:
[tex]Area \: of \: sector = \frac{ \theta}{360 \degree} \times \pi {r}^{2} \\ \\ = \frac{135 \degree}{360 \degree} \times \pi {r}^{2} \\ \\ = \frac{135 }{360 } \times 3.14 \times {(16)}^{2} \\ \\ = \frac{108,518.4 }{360 } \\ \\ = 301.44 \\ \\Area \: of \: sector \approx \: 302 \: {cm}^{2} [/tex]
The table represents an exponential function. What is the multiplicative rate of change of the function? X, 1,2,3,4 Y, 6,4,8/3,16/9