Answer:
The number he thought of was 13
Step-by-step explanation:
Revers the problem
3.5 * 3 = 10.5
10.5 - 4 = 6.5
6.5 * 2 = 13
The number was 13 if Toby thinks of a number less than 15. He divides it by 2 and then he adds 4.
What is a linear equation?It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
It is given that:
Toby thinks of a number less than 15. He divides it by 2 and then he adds 4.
Let the number be x:
From the question:
Revers the problem
x =(3.5×3 - 4)×2
x = (10.5 - 4)×2
x = 6.5×2
x = 13
Thus, the number was 13 if Toby thinks of a number less than 15. He divides it by 2 and then he adds 4.
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Now suppose you buy a stock for $3,500. It decreases in value by 3% and then rises 8%. To the nearest cent, what is the new value of the stock now?
The new value of the stock after the percentage decrease and increase is $3666.60.
What is the new value of the stock?Percentage is the fraction of an amount expressed as a number out of hundred. Percentage is a measure of frequency.
Value of the stock after the decrease = (100 - 3) x $3500 = $3395
alue of the stock after the increase = (100 + 8) x 3395 = $3666.60
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A computer valued at $6500 depreciates at a rate of 14
.3% per year. Determine the value of the computer
after 5 years.
Answer:
A depreciation of 14.3% leaves you with 85.7%, right? Each year's value is 85.7% of the tear before.
So, 6500(0.857)3 = $4091.25
PLEASE HURRY NEEDED ASAP
Answer:
1: Is a function
2: Isnt a function
3: Is a function
4: Isnt a function
Reminder: Functions CAN"T have the same x values but different y values!!!!
Have a great day!!
Please rate and mark brainliest!!
Answer:
Sorry, all I know is the first one is a function.
Step-by-step explanation:
It's linear, and passing the vertical line test because it only has a point on each part of the x-axis, if you were to graph it.
Write your answers using set notation.
Answer:
domain = {-8, -6, 8}
range = {-4, -1, 0, 8}
Step-by-step explanation:
The domain is the set of first numbers of the ordered pairs. The range is the set of second numbers. We generally like to have the elements of a set arranged in order, with duplicates eliminated.
domain = {-8, -6, 8}
range = {-4, -1, 0, 8}
A triangle has sides with lengths of 63 miles, 64 miles, and 85 miles. Is it a right triangle? Yes or no?
Answer:
no it is not a right angled triangle.
Step-by-step explanation:
forthetra
Find the height of a triangular pyramid with a volume of 13 m and a base area of 7 m
Answer:
h = 0.79591836734694 m
Step-by-step explanation:
h = height
s = slant height
a = side length
P = perimeter of base
e = lateral edge length
r = a/2
V = volume
L = lateral surface area
B = base surface area
A = total surface area
Find the measure of the missing angle in this isosceles triangle.
The measure of the missing angle(a) in the isosceles triangle(two sides and angle equal) is 70 degrees.
What is an Isosceles triangle?
An Isosceles triangle is a triangle that has two of it sides equal to each other and two of it angles equal to each other.
The base angle of an isosceles triangle are equal. Therefore, let's find angle a in the triangle.
55 + 55 + a = 180
Recall the sum of angle in a triangle is 180 degrees.
110 + a = 180
subtract 110 from both sides
110 - 110 + a = 180 - 110
a = 70 degrees
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A bag contains 30 cookies: 9 vanilla, 9 chocolate, and 12 oatmeal. What is the probability that a chocolate is randomly selected
Answer:
30% for chocolate
Step-by-step explanation:
9÷30= 30% 0.3 vanilla
9÷30=30% 0.3 chocolate
12÷30=40% 0.4 oatmeal
The probability of choosing chocolate is 0.30.
What is the probability?Probability means possibility. It is a branch of mathematics that deals with the occurrence of a random event.
Number of total cookies = 30
Number of vanilla = 9
Number of chocolate = 9
Number of oatmeal = 12
The probability that chocolate is randomly selected is;
Probability of choosing a chocolate = Number of chocolate / Number of total cookies
Probability of chosen a chocolate = 9 / 30
Probability of chosen a chocolate = 3 / 10
Probability of chosen a chocolate = 0.30
Hence, the probability of choosing chocolate is 0.30.
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The price of gas increased from $2.20 per gallon on Monday to $2.31 per gallon on Tuesday. What is the percent of increase?
Adi drew a circle with a radius of 10 cm. What is the area of the circle? Use 3. 14 for pi
Answer:
314
Step-by-step explanation:
This is because the area is r^2*3.14
p-p-p-q-q-q =?
its urgent
Hey there!
Let's combine like terms:
p-p-p-q-q-q
p-p-p=-p
-p-p-q-q-q
-p-3q
Remember, like terms are from the same "family"
So p's are from the p family, and q's are from the q family.
Hope everything is clear.
Let me know if you have any questions.
#LearningDoesn'tEnd
Find the missing dimension of the cone.
Volume = 118π ft3
2/3 ft
h =_ft
The height of the cone with a volume of 1/18π ft³ is: 1.5 ft.
What is the Volume of a Cone?Volume of a cone = 1/3πr²h, where, h = height of cone, and r = radius of the cone.
Given the following:
Volume = 1/18 π ft³Diameter = 2/3 ftRadius = (2/3)/2 = 1/3 ftHeight (h) = ?Plug in the values into the volume formula:
1/18π = 1/3π(1/3)²h
1/18π = 1/3π(1/9)h
1/18π = (πh)/27
Divide both sides by π
1/18 = h/27
Cross multiply
27 = 18h
27/18 = h
h = 1.5
Therefore, the height of the cone with a volume of 1/18π ft³ is: 1.5 ft.
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Mar 31, 2:56:59 PM
Ryan needed to get his computer fixed. He took it to the repair store. The technician
at the store worked on the computer for 3.75 hours and charged him $192 for parts.
The total was $398.25. Which equation could be used to represent
the context if x represents the cost of labor per hour?
What is the value of the expression shown?
3
(1)
(1/3)³ = 1³ / 3³ = 1/27
1/27
kgfgkjhgbkjyhgbjtg
which equation is equivalent to the expression (-2x to the power of two) (3x to the power of 5)?
A. 6x to the power of 7
B. -6x to the power of 10
C. 6x to the power of 10
D. -6x to the power of 7
Answer: pretty sure the answer is D
Step-by-step explanation:
How many seconds are in 3 minutes?
There are 60 seconds in one minute.
Complete the table.
Answer:
1 min- 60 secs
2 mins- 120 secs
3 mins- 180 secs
Step-by-step explanation:
If one minute equals 60 seconds then you would times 60 seconds by the number of minutes.
1x60=60
2x60=120
3x60=180
Giving Brainliest
A spy realizes his cover is blown and flees toward his secret evacuation spot at a speed of 60 mph. Two hours later, a special agent in a helicopter starts chasing the spy. The special agent travels the same route at a speed of 90 mph.
A What distance does the spy cover in t hours?
B What distance does the special agent cover in t hours?
C How fast is the distance between them reducing
D How far apart are the spy and special agent when the chase begins?
E How long does it take the special agent to catch the spy?
F At what speed should the special agent chase the spy if the evacuation spot is 240 miles from the setting point
The distance covered by the spy in t hours will be 60t while the special agent's distance is 90t.
How to calculate the distance?The distance covered by the spy in t hours will be calculated thus:
= 60 × t
= 60t
The distance covered by the special agent in t hours will be:
= 90 × t
= 90t
The difference in the distance between them every hour will be:
= 90t - 60t
= 30t
The distance between the spy and special agent when the chase begins will be:
= (2 × 60mph) - 0
= 120m - 0
= 120m
The time taken to catch the spy will be:
120 + 60t = 90t
90t - 60t = 120
30t = 120
t = 120/30 = 4
The special agent will catch the spy in 4 hours.
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Answer:
A: 60t
B: 90t
C: 30 mph
D: 120 miles away
E: 4 hours
F: 120 mph
Step-by-step explanation:
The area of the squared garden is 625 sq. m, what is its perimeter ? (Ans: 100 m)
Answer: Area of square = a*a(where a is length of one side) Putting value a x a=625 cm2 a= 25 Perimeter will be 4 x a 4 x 25 = 100 cm
Step-by-step explanation:
[tex]\sf\huge\underline{Given:-}[/tex]
Area of the square field [tex]\sf{= 625 m^2}[/tex]
[tex]\sf\huge\underline{To\: Find:-}[/tex]
[tex]\rightarrow[/tex] Perimeter of the square garden.
[tex]\sf\huge\underline{Formula \:Used:-}[/tex]
Area of square [tex]\sf{= side^2}[/tex]
Perimeter of square [tex]\sf{= 4×side}[/tex]
[tex]\sf\huge\underline{Solution:-}[/tex]
As we know,
[tex]\rightarrow[/tex] Area of square [tex]\sf{= side^2}[/tex](putting the given value of area)
[tex]\rightarrow[/tex] [tex]\sf{Side^2}[/tex] [tex]\sf{= 625}[/tex]
[tex]\rightarrow[/tex] [tex]\sf{Side}[/tex][tex]\sf{= \sqrt{625}}[/tex]
[tex]\rightarrow[/tex][tex]\sf{Side}[/tex][tex]\sf{= 25cm}[/tex]
So, From here we got the side of the square garden that is, 25cm.
Now,
[tex]\rightarrow[/tex]Perimeter of square [tex]\sf{= 4×side}[/tex](Putting the value of side)
[tex]\rightarrow[/tex] Perimeter of square [tex]\sf{= 4×25}[/tex]
[tex]\rightarrow[/tex]Perimeter of square [tex]\sf{= 100cm}[/tex]
Therefore, perimeter of the square garden = 100cm.
The diagram below shows how much time Antoine spends doing different activities each day. How many hours does Antoine sleep in a day?
Your missing the diagram. Thus, I will try my best to help
Answer/Step-by-step explanation:
Given;
The diagram below shows how much time Antoine spends doing different activities each day.
How many hours does Antoine sleep in a day?
Solve;
To find how many hours does Antoine sleep in a day;
24 hour × percent of hour sleep = Hours sleep in a day
The sleeping hours = 24h × % = Hour
If you still do not understand please shown the diagram!
~Learn with Lenvy~
PLEASE HELP ASAP 30 POINTS!!!!!!!!!
Answer:
$11.25
Step-by-step explanation:
multiply 15 by 25% which is .25
15 * 0.25 = 3.75
minus 3.75 from 15
15 - 3.75 = 11.25
AYUDA ES PARA HOY ayudaaaaaaaaaa
Answer:
The answer is 12
Step-by-step explanation:
Select the correct answer. robin randomly selects a number between 1 and 20. what is the probability that the number selected is the square of a natural number? a. b. c. d. e.
The probability that the number selected is the square of a natural number will be [tex]\frac{1}{5}[/tex].
What is probability?Probability means possibility. It deals with the occurrence of a random event. The value of probability can only be from 0 to 1.
Its basic meaning is something is likely to happen. It is the ratio of the favorable event to the total number of events.
P is the probability
F(E) is the favorable event
T(E)is the total event
The probability is found as;
[tex]\rm P = \frac{F(E)}{T(E)} \\\\ \rm P = \frac{4}{20)} \\\\ \rm P = \frac{1}{5}[/tex]
Hence the probability that the number selected is the square of a natural number will be [tex]\frac{1}{5}[/tex].
To learn more about the probability link is given below.
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Answer:
Option D is the correct answer
Step-by-step explanation:
D. [tex]\frac{1}{5}[/tex]
A school needs to buy new notebook and desktop computers for its computer lab. The notebook computers cost $300 each, and the laptop computers cost $350 each. How much would it cost to buy 18 notebooks and 12 desktop computers? How much would it cost to buy nn notebooks and dd desktop computers?
Answer:
$9,600
Step-by-step explanation:
notebook computer : $300
laptop computer : $350
18 x 300 = 5,400
12 x 350 = 4,200
4,200 + 5,400 = 9,600
There are 8 fluid ounces in 1 cup...
Answer: 4 cups
Step-by-step explanation:
First, convert the 6 cups of water to fluid ounces:
6 cups (8 fluid ounces / 1 cup) = 48 fluid ounces.
Then, since each bowl took 4 fluid ounces, and there are 4 bowls, the total fluid ounces used must be 16.
Thus, if there was 48, and 16 were used, 32 fluid ounces must be left. Convert this to cups by dividing by 8 and getting 4 cups.
Can someone please help me
Answer:
Hence corre ctophon is (A)
Need Help! Given the drawing, what would the value of x need to be in order for it to be true that m || n ?
Answer:
13
Step-by-step explanation:
The theorem is that for a line bisecting two parallel lines, the oposite angles are equal. Hence, you can formulate the equation 4x+18 = 7x-21, which solves to 13.
Maggie makes a scale drawing of a deck. The scale for the actual deck to the scale drawing is 7ft to 1in. The dimensions of the deck are 28ft by 17.5ft. What are the dimensions of the deck in the drawing? show your work.
Answer:
4 inches by 2.5 inches
Step-by-step explanation:
The scale factor is 7 feet/1 inch.
This can be written as 7'/1" or as 1"/7'
28 feet converts to (28')*(1"/7') = 4"
17.5 feet converts to (17.5)*(1"/7') = 2.5"
The drawing dimensions are 4 inches by 2.5 inches.
Answer:
Step-by-step explanation:
Ashley ate Mexican food 4 out of 7 days on her vacation. If her vacation was 35 days, how many days did she eat Mexican food?
31
21
20
28
The number of days Ashley ate Mexican food while on vacation is 20 days.
How many days did Ashley eat mexican food?
The first step is to determine the fraction of the number of days Ashley atae Mexican food. In order to do this, divide 4 by 7
4/7.
The second step is to multiply 4/7 by 35
4/7 x 35= 20 days
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can y’all please helpppp , i’ll give brainliest
[tex]\qquad\qquad\huge\underline{\boxed{\sf Answer☂}}[/tex]
The y - coordinate of a point lying on that function is represented by f(x) for each value of x, so let's find the corresponding value of x, when f(x) = 0
In the given case, y - coordinate of two points is equal to zero. hence we will get two distinct values of x
that is :
[tex]\qquad \sf \dashrightarrow \: x = - 2 \: \: and \: \: x = 4[/tex]
What strategies can I use to help me understand and represent real situations involving linear relationships?
Answer:
"Different representations (written descriptions, tables, graphs, and Linear functions may be used to represent and generalize real situations. Slope and y-intercept are keys to solving real problems involving linear relationships. "
Step-by-step explanation: