Answer:
The correct answer is A
Step-by-step explanation:
20% x 12 = 2.4
2.4 + 12 = 14.4
20% x 8 = 1.6
1.6 + 8 = 9.6
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Solve the system of equations using the substitution method. X + 3y = -4 x= - 4y
Answer:
x: -16
y: 4
Step-by-step explanation:
Find x so that x, X +2, X'+3 are the first three terms of a geometric sequence. Then find the 5" term of the
sequence.
Answer:
The fifth term is -1/4.
Step-by-step explanation:
We know that the first three terms of the geometric sequence is x, x + 2, and x + 3.
So, our first term is x.
Then our second term will be our first term multiplied by the common ratio r. So:
[tex]x+2=xr[/tex]
And our third term will be our first term multiplied by the common ratio r twice. Therefore:
[tex]x+3=xr^2[/tex]
Solve for x. From the second term, we can divide both sides by x:
[tex]\displaystyle r=\frac{x+2}{x}[/tex]
Substitute this into the third equation:
[tex]\displaystyle x+3=x\Big(\frac{x+2}{x}\Big)^2[/tex]
Square:
[tex]\displaystyle x+3 = x\Big( \frac{(x+2)^2}{x^2} \Big)[/tex]
Simplify:
[tex]\displaystyle x+3=\frac{(x+2)^2}{x}[/tex]
We can multiply both sides by x:
[tex]x(x+3)=(x+2)^2[/tex]
Expand:
[tex]x^2+3x=x^2+4x+4[/tex]
Isolate the x:
[tex]-x=4[/tex]
Hence, our first term is:
[tex]x=-4[/tex]
Then our common ratio r is:
[tex]\displaystyle r=\frac{(-4)+2}{-4}=\frac{-2}{-4}=\frac{1}{2}[/tex]
So, our first term is -4 and our common ratio is 1/2.
Then our sequence will be -4, -2, -1, -1/2, -1/4.
You can verify that the first three terms indeed follow the pattern of x, x + 2, and x + 3.
So, our fifth term is -1/4.
You saved 20% off of the original price. The original price was $60. How much was your saving
Answer:
$12
Step-by-step explanation:
Helloo!! I really need help on this. Thank you! I’ll mark brainly.
Rise/Run
5/4
You go to the point farthest to the left and count up. This will be your Rise. Then you count over to the point on the right. This will be your Run.
Find the area of the prism pls help!!
Answer:
The pdf wont work
Step-by-step explanation:
cant help
A parking garage charges $5 for the first hour, $10 for up to 2 hours, and $12 for the entire day. Let G be the dollar cost of parking for t hours
Answer:
Cost is G for t hours =[tex]\left \{ {5t for{t=0 <t<2} \atop 12 for{t >2}} \right.[/tex]
Step-by-step explanation:
According to question parking garage takes
5$ for 0 to 1hr
10$ for 0 to 2hr and
12$ for 0 to 24hr
Let t be the time for which car is parked in garage and the total cost is G then
G =[tex]\left \{ {5t for{t=0 <t<2} \atop 12 for{t >2}} \right.[/tex]
therefore cost is G =[tex]\left \{ {5t for{t=0 <t<2} \atop 12 for{t >2}} \right.[/tex]
The cost of parking a car for 5 hours is required.
Cost of 5 hours will be $25.
The cost of parking for each hour = $5
The cost of parking for entire day = $120
Let [tex]t[/tex] be the number of hours
[tex]G[/tex] be the total cost.
The function will be
[tex]G(t)=5t[/tex]
The cost at 5 hours will be
[tex]G(5)=5\times 5=25[/tex]
So, cost of 5 hours will be $25.
Learn more:
https://brainly.com/question/22136086
What is the measure of Zx?
Angles are not necessarily drawn to scale.
х
41°
- Z
o
2=
0
Answer:
the answer its 49
Step-by-step explanation:
simple math just subtract 90-41 and you will get 49
Please help what is 21 divided by 3 x 10 + 66.86 SIMPLIFIED please and thank you
Answer:
70/x
Step-by-step explanation:
Answer:
136.86 or 137
Step-by-step explanation:
21÷3x10+66.86
here's what I did...
as simplified its: 137
Write 5 pounds for $2.49 as a unit rate. Round to the nearest hundredth
Answer:
5 pounds = $2.49
1 pound = $2.49 ÷ 5 = $0.50 (nearest hundredth)
Answer: $0.50/pound
Step-by-step explanation:
what is the length of the hypotenuse?
Answer:
10
Step-by-step explanation:
c²=b²+a²=100
so
c=10
jjthj
What is the equation of the line that passes through the point (1, 3) and is perpendicular to the line 2x+3y=15?
The equation of the line that passes through the point(1, 3) and is perpendicular to the line 2x + 3y = 15 is y = 3 / 2x + 3 / 2.
How to find the equation of a line perpendicular to another?The line passing through (1, 3) is perpendicular to the equation 2x+3y=15.
Therefore,
y = mx + b
where
m = slopeb = y-interceptHence,
3y = -2x + 15
y = -2 / 3 x + 5
For line to be perpendicular it must follow the following rules;
m₁m₂ = -1
m₁(-2 / 3) = -1
-2m₁ = -3
m₁ = 3 / 2
Therefore, the equation can be found as follows:
3 = 3 / 2(1) + b
3 = 3 / 2 + b
b = 3 - 3 / 2
b = 6 - 3 / 2
b = 3 / 2
Hence,
y = 3 / 2x + 3 / 2
learn more on equation of a line here: https://brainly.com/question/21511618
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The time required for a trip of a certain distance in a car varies indirectly as the rate the car travels. A trip took 18 hours traveling at 50 miles per hour. How long would this trip take if the car was traveling at 75 miles per hour?
Answer:
The answer is 12.
Step-by-step explanation:
If you multiply 18 by 50, you would get how long the trip is, which is 900 miles. Then, divide 900 by 75, you would then get the answer of 12. The trip would take 12 hours at 75 mph.
Cindy is x years old. Andy is twice Cindy’s age. Sue is 3 years younger than Cindy. Write a simplified expression for the sum of their ages
Answer:
4x-3
hope this helps
how many square units is the area of the rectangle
Answer:
-30m^11n^5
Step-by-step explanation:
the length of a rectangle is width times length (or base times height).
5m^7n^3 times -6m^4n^2 = -30m^11n^5
I hope this helped, please give brainliest if this is correct! Thank you!
need a quick answer for finding this please
Answer:
58°
Step-by-step explanation:
65+57+x=180 [SUM OF INTERIOR ANGLE OF TRIANGLE]
x=180-57-65
x=58°
If 1 meter is equivalent to 3.28 feet, then approximately how many meters are in one mile?
Answer:
1609.8
Step-by-step explanation:
Answer:
1609.34
Step-by-step explanation:
1 meter = 3.28 feet
1 mile = 5280 feet
A system of equations has 1 solution. If 4x – y = 5 is one of the equations, which could be the other equation?
y = –4x + 5
y = 4x – 5
2y = 8x – 10
–2y = –8x – 10
Answer:
The answer is y=4x-5
A system of equations has 1 solution. If 4x – y = 5 is one of the equations, which could be the other equation?
y = –4x + 5
y = 4x – 5
2y = 8x – 10
–2y = –8x – 10
–2y = –8x – 10
Help Me pls i need this done by 11:59 pm
Answer:
11 or 22 would be one of your answer i believe it is 11 though
Step-by-step explanation:
mark me brainly have an amazing day
sparkles and love
☆*: .。. o(≧▽≦)o .。.:*☆
Which figures have rotation symmetry?
Select each correct answer.
Answer:
the answers are the x and the star (or just B and C)
Step-by-step explanation:
How do I know? I just know...
JK
Rotational semetry is if one shape looks the same, even fliped in a sort of way.
Answer this please tell me if I’m correct
the area of a triangle is 30cmsquare find the base if the altitude exceeds the base by 7 cm
Answer:
5 cm
Step-by-step explanation:
Area= 1/2 base×altitude
let base be x cm hence altitude = x+7 cm
30 = 1/2 (x) (x+7)
60= x^2 + 7x
x = 5 or - 12
but measurements can't be in negative form hence -12 is discarded. Thus x= 5 cm
x= base hence base = 5cm
Answer:
base = 5 cm
Step-by-step explanation:
The area (A) of a triangle is calculated as
A = [tex]\frac{1}{2}[/tex] bh ( b is the base and h the altitude )
let base be b then h = b + 7
Given A = 30, then
[tex]\frac{1}{2}[/tex]b(b + 7) = 30 ( multiply both sides by 2 to clear the fraction )
b(b + 7) = 60 ← distribute left side
b² + 7 = 60 ( subtract 60 from both sides )
b² + 7 - 60 = 0 ← in standard form
(b + 12)(b - 5) = 0 ← in factored form
Equate each factor to zero and solve for b
b + 12 = 0 ⇒ b = - 12
b - 5 = 0 ⇒ b = 5
However, b > 0, thus b = 5
That is the base is 5 cm
7p-5=6p+8 what is the answer to that
Answer:
p=13
Step-by-step explanation:
PLZ HELP ASAP
Tina has a pet sitting business. She charges a flat service fee of $30, plus $20 per day for each animal. If one of her customers spent less than $170 on one animal, which of the following inequalities could be used to solve for x, the number of days the customer paid for pet sitting?
A.
$20x < $170
B.
$20x + $30 < $170
C.
$20x < $200
D.
$20x - $30 < $200
Answer:
Option B: $20x + $30 < $170 is the correct answer.
Step-by-step explanation:
Given that:
Service fee of Tina's business = $30
Per day charges = $20
Number of days = x
Customer's budget = less than $170
According to given statement;
20x + 30 < 170
Hence,
Option B: $20x + $30 < $170 is the correct answer.
Help! Now Please! Explain!
Answer:
83
Step-by-step explanation:
you go up so it is positive. it's up 83 so the number is 83.
Step-by-step explanation: The keyword is up. Since we're talking about integers and the keyword is up, the number is positive.
Therefore, the answer is 83, or say it like this, positive 83.
For example: Start at 0. Then go up by 83. (That's why there is a number line.
I
- 2y = -12
2x + 9y = 2
Answer:
I need more clarification for anythng else, this is the best i can do
Step-by-step explanation:
Simplify arccos(sin50°).
Answer:
what kind of question is that lol
An abstract painting
is a square of side
96 cm, and shows
three circles that
touch each other
and the sides of
the square. The top
two circles have the
same radius. What is
the radius of the third
circle?
Answer:
the same as the others
you dont know the first two im not smart srry
Step-by-step explanation:
Find the slope of the line passing through the points (-6,2), (0,-6).
A-6
B. 2
C. -4/3
DO
E-3/1
C. -4/3
[tex]slope = \frac{(y _{2} - y _{1}) }{(x _{2} - x _{1} )} \\ = \frac{( - 6 - 2)}{(0 -( - 6)} \\ = \frac{ - 8}{ 6} \\ = - \frac{4}{3} [/tex]
there are 2 questions pls answer fast
In a certain code the word CASH is coded as FDVK and the word MONEY is coded as PRQHB.
What would the word RETURNS be coded as ?
a. UHWROKP
b. UHWXUQV
c. OBQROKP
d. UHWXUQP
11M + N – P = 12
Which of the following values for M , N , P would make the above number sentence true ?
a. M = 6, N = 6 , P = 6
b. M = 7, N = 6 , P = 1
c. M = 11, N = 0 , P = 1
d. M = 10, N = 11 , P = 12
Answer:
Q1: B. UHWXUQV
Q2: None of these answers equal 12 so I'll just tell you the answers for all of them in case you mistyped.
a. 66
b. 82
c. 120
d. 109
Im assuming you meant 120. If so, your answer is c.
For fx), evaluate the following:
a. (0)
b. (6)
Answer:
a. f(0) = 4
b. f(6) = 8
Step-by-step explanation:
Let us solve the question
∵ f(x) = x + 4 if x < 5 ⇒ First part
→ That means if x less then 5 we will use this part of f(x)
∵ f(x) = 8 if 5 ≤ x < 7 ⇒ Second part
→ That means if x = 5 or greater than 5 and less than 7, we will use
this part of f(x)
∵ f(x) = 2x - 1 if 7 ≤ x ≤ 10 ⇒ Third part
→ That means if x equal 7 or greater than 7 and less than 10 or equal 10,
we will use this part of f(x)
a. The value of f(0)
∵ x = 0
∵ 0 < 5
→ That means we will use the first part of f(x)
∵ f(x) = x + 4
∴ f(0) = 0 + 4
∴ f(0) = 4
b. The value of f(6)
∵ x = 6
∵ 6 is between 5 and 7
→ That means we will use the second part of f(x)
∵ f(x) = 8
→ It means the value of f(x) is 8 for any values of x from 5 to less than 7
∴ f(6) = 8