Step-by-step explanation:
I guess it is a circular pool.
the area of a circle is
pi×r²
in our case we know
pi×r² = 78.5
3.14×r² = 78.5
r² = 78.5/3.14 = 25
r = 5 m
Pls help me with this math equation
For F(x)=3x+4 and g(x)= x^2-3x, find g(f(x)).
Answer:
g(f(x)) = 9x² + 15x + 4
Step-by-step explanation:
Given :
⇒ f(x) = 3x + 4
⇒ g(x) = x² - 3x
=============================================================
Solving :
⇒ g(f(x))
⇒ g(3x + 4) = (3x + 4)² - 3(3x + 4)
⇒ g(3x + 4) = (3x)² + 2(3x)(4) + (4)² - 9x - 12
⇒ g(3x + 4) = 9x² + 24x + 16 - 9x - 12
⇒ g(f(x)) = 9x² + 15x + 4
Which of the following is a disadvantage of renewable energy?
A. It creates large amounts of pollution
B. It could be costly to initially switch to.
C. It will not produce enough power to sustain us.
D. It will not run out.
B. It could be costly to initially switch to.
A disadvantage of renewable energy would be It could be costly to initially switch to. Hence option B is true.
Used the definition of renewable energy that states,
Renewable energy is energy that comes from a source that won't run out. They are natural and self-replenishing and usually have a low- or zero-carbon footprint.
Now, Renewable energy sources have numerous advantages, such as being environmentally friendly and sustainable, one of the disadvantages is the initial high cost of transitioning from traditional energy sources to renewable ones.
Since renewable energy sources do not create large amounts of pollution.
Additionally, renewable energy has the potential to produce ample power to meet our needs.
Finally, the fact that renewable energy will not run out is actually an advantage, not a disadvantage.
Hence, Option B is true.
To learn more about Energy visit:
https://brainly.com/question/8101588
#SPJ4
what is 3 x 5 what does it equal
Answer:
3 x 5= 15
Step-by-step explanation:
If you count by 5's like 5, 10, 15, 20
And if you count by 3's: 3, 6, 9, 12, 15
then find the least common multiple and it is 15
Please mark me as the Branlyest ;) Thanks
Answer:
3 x 5 = 15
Step-by-step explanation:
3 + 3 + 3 + 3 + 3 = 15
I hope this helps!
Express the d= rt in terms of the time, t. Use the formula to find the time when the distance is 40 and the rate is 8.
Answer:
5
Step-by-step explanation:
Divide the expression by r on both times; d/r=rt/r. You'll remain with t=d/r.
then substitute t=40/8 which equals to 5.
Find the area of the circle. Use 3.14 for the value of x Round your answer to the nearest tenth. Don’t forget to find the radius first before finding the area.
81.7 in
98.5 in
16 in
326.8 in
Answer:
r = d/2
r = 10.2/2 = 5.1
Area = pi * r^2
Area = 3.14 * 5.1^2
Area = 81.67 in^2
To the nearest 1/10, this is 81.7 in^2
Translate the sentence into an equation.
Nine less then the product of 5 and a number equals 7.
Use the variable x for the unknown number.
Answer:
9 - 5x = 7
Step-by-step explanation:
Nine (9) less (-) then the product (*) of 5*x, equals (=) to 7
9 - 5x = 7
Write the interval(s) over which the function is continuous:
Answer:
See below ~
Step-by-step explanation:
Intervals over which the function is continuous :
Left line :
Left hand limit (LHL) = -∞Right hand limit (RHL) = -2Interval = (-∞, -2)===========================================================
Central line
LHL = -2RHL = 1Interval is : [-2, 1)=============================================================
Right line :
LHL = 1RHL = ∞Interval is : (1, ∞)A 16 oz. sports drink costs 2.39 what is the unit price rounded to the nearest cent
Answer:
$0.15 per ounce
Step-by-step explanation:
Unit price = cost / volume of drink
$2.39 / 16 oz = $0.15 per ounce
Hope this helps
help pleaseeee explain too if you can
Answer:
x=10
y=[tex]10\sqrt{3}[/tex]
Step-by-step explanation:
Since there is a 30 degree angle, it is a special right triangle, 30 60 90 triangle. The shorter leg represents "a," the longer leg represents "a√3", and the hypotenuse represents 2a.
The triangle has a hypotenuse of 20 and we are trying to find x and y. x=10 because x is the opposite side of 30 degrees and x is half of the hypotenuse. y=[tex]10\sqrt{3}[/tex] because we already know the x value and y is opposite of 60 degrees. As mentioned before, the longer leg represents a√3.
Hope this helps and have a good day.
Mieko bought 2 gallons of paint. She used 1/4 of the paint in her bedroom, 3 quarts in the hallway, and the rest of the paint in the living room. How many quarts of paint did she use in the living room?
A: 3 Quarts
B. 8 Quarts
C. 10 Quarts
D. 12 Quarts
=======================================================
Explanation:
1 gallon = 4 quarts
2 gallons = 8 quarts
1/4 of 8 quarts = 2 quarts
She used 2 quarts for her bedroom and 3 for the hallway. Therefore, she used 2+3 = 5 quarts total.
That leaves 8 - 5 = 3 quarts for the living room.
Answer:
A: 3 Quarts
Step-by-step explanation:
1 gallon = 4 quarts
1/4 of 2 gallons = 1/4 × 2
= 1/2 gallon
⇒ 1/2 gallon = 2 quarts
Therefore, Mieko used 2 quarts of paint to paint her bedroom.
If she used 3 quarts to paint the hallway, then
⇒ total number of quarts used = 2 + 3 = 5 quarts
As she bought a total of 2 gallons of paint:
⇒ 2 gallons = 2 × 4 = 8 quarts
Therefore the remaining unused paint (to paint the living room) is:
⇒ total paint - used paid = 8 quarts - 5 quarts
= 3 quarts
1.
Joshua and Helen are painting sections of their house this weekend. It will take
3 7/9 gallons to paint the room upstairs. The downstairs room will need 5 1/3 gallons
of paint. If they buy 10 gallons of paint, how much will be left over?
Answer:
8/9 will be left over
Step-by-step explanation:
3 7/9 + 5 1/3= 9 1/9
Now subtract the amount of paint needed by how much paint there is:
10- 9 1/9= 8/9
Therefore, 8/9 will be left over
Hope this helps
what will happen when you solve the problem?( Design brief and investigation).
When a design brief & investigation is used for problem solving, then, the problem will be solved in structured manner.
What is a design brief and investigation?
This is a brief that provides a structured way to apply knowledge and skills to solve problems while the investigation tells how to search for the knowledge that we need.
In conclusion, the problem will be solved in structured manner if we use a design brief & investigation for solving a problem.
Read more about design brief
brainly.com/question/25009327
#SPJ1
how to solve fourier series
For every 5 students it would cost:
36.25 for admission to the museum and
31.50 for lunch
what is the total cost in dollars for admission and lunch for each student?
what is the total cost in dollars for admission and lunch for all 30 students?
1 student:?
30 students:?
Answer: 30 students: $346.5
1 student: $11.55
Step-by-step explanation:
The total cost in dollars for admission and lunch for 30 students is $406.6 and for each student is $13.55.
What is unitary method?
The unitary method is a technique for solving a problem by first finding the value of single unit, and then finding the value the necessary value by multiplying the single unit.
According to the given question
Cost price for five students for taking admission to the museum and lunch is 36.25 and 31.50 respectively.
cost price for one student for taking admission in museum = [tex]\frac{36.25}{5} = $7.25[/tex]
cost price for one student lunch = [tex]\frac{31.50}{5} = 6.3[/tex]
Therefore,
The total cost for each student for the admission and lunch = 7.25+6.3 =
$13.55
And, the total cost for 30 students for admission and lunch = 30×$13.55 =$406.5
Hence, the total cost for admission to museum and lunch for each student is $13.55 and for 30 students is $406.6.
Learn more about unitary method here:
https://brainly.com/question/22056199
#SPJ2
The function, f(x), is plotted below.
Evaluate the following limits:
N
lim f(x)
-1
lim f(x) =
x -1
What is the value of the function at x = 1?
f(1) =
the answer is -2
Yw :D
You are designing a large rectangular fish tank for your tropical fish. The length will be 1 yard 3 inches, the width will be 1.5 feet, and the height will be 20 inches.
Part A
Find the volume of the fish tank in cubic inches.
The volume is
cubic inches.
Part B
Your math teacher tells you that your fish tank will have a capacity of about 976 cups. You have a total of 30 tropical fish. For them to flourish in a fish tank, there needs to be an average of 2 gallons of water for each fish.
Convert 976 cups to gallons.
976 cups equals
gallons.
Answer:
A. 14040 cubic inches
B. 61 gallons
Step-by-step explanation:
The volume of a cuboid is given by the formula ...
V = LWH
__
A.One yard is 36 inches, so 1 yard 3 inches is 36 +3 = 39 inches.
One foot is 12 inches, so 1.5 ft = 1.5×12 = 18 inches.
The volume of the fish tank is ...
V = (39 in)(18 in)(20 in) = 14,040 in³
The volume is 14,040 cubic inches.
__
B.One gallon is 16 cups, so 976 cups is 976/16 = 61 gallons.
976 cups equals 61 gallons.
_____
Additional comment
One gallon is 231 cubic inches, so the volume of the tank is actually about 972 cups, or 60.8 gallons.
The sum of twice a number and 4 times another number is 4. The first number decreased by the
econd number is 5. Find the numbers.
Answer:
4 and -1
Step-by-step explanation:
Let :
First number = xSecond number = yEquations formed :
2x + 4y = 4 ⇒ x + 2y = 2x - y = 5Subtract : Equation 1 - Equation 2
x + 2y - x + y = 2 - 53y = -3y = -1x - (-1) = 5x + 1 = 5x = 4The numbers are : 4 and -1
The width of a rectangle is 4 cm and its perimeter is 26 cm. What is the perimeter of a square has the same area as the rectangle
Answer:
length = 9 cm
Step-by-step explanation:
perimeter = p =26 cm
width = w= 4 cm
perimeter of a rectangle= 2*w+2*L
L= length
so we have:
26 = 2*(4) +2*L
26= 8 +2L
26-8 = 2L
18 = 2L
L= 18/2
L =9 cm = length
Find HK using proportions and Pythagorean theorem
Check the picture below.
Ai Mi just started a running plan where she runs 12 miles the first week and then increases the number of miles she runs by 5% each week. If she keeps up this plan for 12 weeks, how many total miles would Ai Mi have run, to the nearest whole number?
Answer:
267 miles
please vote me brainliest. Thank you.
At the end of 12 weeks, Ai Mi has run 22 miles.
As mentioned in the question, Ai Mi just started a running plan where she runs 12 miles the first week and then increases the number of miles she runs by 5% each week.
What is an exponential function?The function which is in format f(x) =a^x where a is constant and x is variable, the domain of this exponential function lies (-∞, ∞).
here,
Let the total run be x, for 12 weeks
According to the question,
x = 12×(1 + 5%/100)¹²
x = 12(1.05)¹²
x = 21.55
x ≈ 22 miles
Thus, At the end of 12 weeks, Ai Mi has run 22 miles.
Learn more about exponential function here:
brainly.com/question/15352175
#SPJ2
can you please help me i give you extra pointss
Answer:
(2,-2), (4,-2), (1,-4), (6,-4)
pls help i will mark brainlyest
Answer:
∠b=82°
Step-by-step explanation:
143°=∠c+∠b (exterior angle property)
143°=61°+∠b
∠b=143-61
∠b=82°
63. 26 Which expressions are equal to 23 ? 123 126 26 . 33 23 33
Hey there!
(6^3 * 2^6) / 2^3
= (6 * 6 * 6 * 2 * 2 * 2 * 2 * 2 * 2) / 2 * 2 * 2
= (36 * 6 * 4 * 4 * 4) / 4 * 2
= (216 * 16 * 4) / 8
= 3,456 * 4 / 8
= 13,824 / 8
= 1,728
Looking for something that gives you the result of: 1,728
Option A.
12^3
= 12 * 12 * 12
= 144 * 12
= 1,728
Option A. is. possible answer
Option B.
6^3
= 6 * 6 * 6
= 36 * 6
= 216
216 ≠ 1,728
Option B. is incorrect
Option C.
12^6
= 12 * 12 * 12 * 12 * 12 * 12
= 144 * 144 * 144
= 20,736 * 144
= 2,985,984
2,985,984 ≠ 1,728
Option C. is also incorrect
Option D.
2^6 * 2^3
= 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2
= 4 * 4 * 4 * 4 * 2
= 16 * 16 * 2
= 256 * 2
= 512
512 ≠ 1,728
Option D. is also incorrect
Option E.
2^3 * 3^3
= 2 * 2 * 2 * 3 * 3 * 3
= 4 * 2 * 9 * 3
= 8 * 27
= 216
216 ≠ 1,728
Option E. is also incorrect.
Therefore, the answer should be:
Option A. 12^3
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
16. Solve for "X".
a. 6
b. 100
c. 36
Answer:
a
Step-by-step explanation:
6+10+8=24=iscolecles triangle
Answer:
A
Step-by-step explanation:
cosθ = 8/10
θ = arcCos(8/10)
θ =36.87
cot(36.87) = 8/x
1.33 = 8/x
x1.33 = 8
x = 6
Therefore , A is the correct Answer
There are 276 students.
158 of the students are females.
82 of the males enrolled in magic college.
102 of the females enrolled in magic college.
(a) Create the two-way table based on the given data.
(b) What percentage of students were males that went to magic college?
(c) What percentage of females went to magic college?
Step-by-step explanation:
Number of males is
276 - 158 = 118Number of males not enrolled
118 - 82 = 36Number of females not enrolled
158 - 102 = 56(a)
The table based on data is
Enrolled Not enrolled Total
Male 82 36 118
Female 102 56 158
Total 184 92 276
(b)
Percentage of students were males that went to magic college
enrolled male / total students = (use table above)82/276*100% = 29.71% (rounded)(c)
Percentage of females went to magic college
enrolled female / total female = (use table above)102/158*100% = 64.56% (rounded)Answer:
a) see below
b) 29.7% (1 d.p.)
c) 64.6% (1 d.p.)
Step-by-step explanation:
Part (a)
Using the given information to create a two-way table:
[tex]\begin{array}{|l|c|c|c|}\cline{1-4} & \sf Female & \sf Male & \sf Totals\\\cline{1-4} \sf Enrolled & 102 & 82 & \\\cline{1-4} \sf Not\:enrolled & & &\\\cline{1-4} \sf Totals & 158 & & 278\\\cline{1-4}\end{array}[/tex]
Calculations to fill the table:
Total enrolled = 102 + 82 = 184Female not enrolled = 158 - 102 = 56Male total = 278 - 158 = 120Male not enrolled = 120 - 82 = 38Total not enrolled = 56 + 38 = 94Therefore:
[tex]\begin{array}{|l|c|c|c|}\cline{1-4} & \sf Female & \sf Male & \sf Totals\\\cline{1-4} \sf Enrolled & 102 & 82 & 184 \\\cline{1-4} \sf Not\:enrolled & 56 & 38& 94 \\\cline{1-4} \sf Totals & 158 &120 & 278\\\cline{1-4}\end{array}[/tex]
Part (b)
[tex]\sf Percentage=\left(\dfrac{Value}{Total\:value}\right) \times 100[/tex]
Number of students who are male and enrolled = 82
Total number of students = 278
[tex]\begin{aligned} \implies \sf Percentage\:students\:enrolled & = \sf\left(\dfrac{82}{278}\right) \times 100\\& = \sf 29.7\%\:\:(1\:d.p.) \end{aligned}[/tex]
Part (c)
Total number of females enrolled = 102
Total number of females = 158
[tex]\begin{aligned} \implies \sf Percentage\:students\:enrolled & = \sf\left(\dfrac{102}{158}\right) \times 100\\& = \sf 64.6\%\:\:(1\:d.p.) \end{aligned}[/tex]
What is the distance between parallel lines y=x+3 and y=x+1, rounded to the nearest hundredth?\
The distance between two parallel lines y=x+3 and y=x+1 will be equal to
[tex]d=\dfrac{1}{\sqrt{2}}[/tex]
What is parallel lines?The lines which do not intersect to each other and only intersect at infinity are called parallel lines.
Here we have two lines:-
y=x+3
y=x+1
The formula for the distance between two parallel lines is given by:-
[tex]d=\dfrac{|C_1-C_2|}{\sqrt{a^2+b^2}}[/tex]
We have C1=3 C2=1 a=1 b=1 by putting the value in the formula we will get:-
[tex]d=\dfrac{3-2}{\sqrt{1^2+1^2}}=\dfrac{1}{\sqrt{2}}[/tex]
Hence distance between two parallel lines y=x+3 and y=x+1 will be equal to [tex]d=\dfrac{1}{\sqrt{2}}[/tex]
To know more about Parallel lines follow
https://brainly.com/question/16742265
#SPJ1
In a right triangle, a and b are the lengths of the legs and c is the length of the hypotenuse. What is C?
Answer:
C is 6.3
Step-by-step explanation:
We can apply the pythagorean theorum to find C.
A is 2, B is 6
A^2 + B^2 = C^2
2^2 + 6^2 = C^2
C^2 = 40
C = 6.32455532
A certain circuit is properly fused for a 5-horsepower motor. If the motor is to be replaced by several 5/8 horsepower motors, how many motors will the fuses be able to carry?
Answer:
8 motors
Step-by-step explanation:
The fuses can carry one 5 HP motor.
This replaced by n number of 5/8HP motors.
That mean the new values of horsepower is equal to the previous value.
5 = n * 5/81 = n/8n = 8 motorsThe sum of two numbers is -24. if one of them is -12, find the other number.
Answer:
-12
Step-by-step explanation:
Answer:
let the unknown number be 'x'
x + (-12) = -24
x = -24+12
x = -12
1) A bread recipe contains 60g of butter, 40g of salt and 100g of flour.
a) What percentage of the ingredients are salt and flour?
Answer:
Ingredient Percentage=Ingredient Weight/Total Flour x 100%
Step-by-step explanation:
For example, if a formula calls for 60 pounds of water and 100 pounds of flour, the baker's percent would be 60% water. If there are two types of flour being used, the combination of the weight of both flours will be 100%.
