The number of hours should be 2.
Given that,
There is the cost of $13 plus there is $2 per hour.And, the amount paid is $17.Here we assume the number of hours be x.Based on the above information, the equation is as follows:
2x + 13 = 17
2x = 17 - 13
2x = 4
x = 2
Therefore we can conclude that the number of hours should be 2.
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In 2001 there were 2,900,000 pupils in a primary school and by 2004 number had increased to 4200000 what was the percentage increase give your answer to the nearest whole number
Answer:
4.2M - 2.9M= 1300000
1.3/2.9x100= 44.83%
Answer:
59%
Step-by-step explanation:
2900000÷4200000× 100
Solve - 4x + 2 > 26.
Help please.
Simplify: 5i/ 3 + 2i
Answer:
10+15i/13
Step-by-step explanation:
This question is about complex numbers.
so,
in this type of questions we have to multiply this fraction by the conjugate of the denominator
conjugate of the denominator is 3-2i
1) 5i(3-2i)/(3+2i)(3-2i)
2) 15i-10i^2/9-4i^2 ( we know that i^2 = -1 )
3) 15i+10/9+4
4) 15i+10 / 13
20x2 y(x2 - y2) and 35xy?(x - y)
lcm
Answer:
Correct option is
HCF of 20 and 35 = 5
HCF of x2yandxy2=xy
HCF of (x2−y2),i.e.,(x−y)(x+y)
and (x−y)=(x−y)
∴ReqdH.C.F=5xy(x−y)
Step-by-step explanation:
hiiii ur so cute
Betsy wanted to find out if people in her town would purchase lemonade from a lemonade stand set up on the corner of Sycamore and 10th Street Out of 2546 families in the town, she found 15
to survey by assigning a number to each family and using a random number generator to choose a number. Out of the families surveyed, 12 families said that they would purchase the lemonade,
and 3 families said that they would not.
A friend of hers said that her survey results would not be significant. Why would they not be?
AO The survey was only done in one town instead of in multiple towns.
B. Only 20% of the people surveyed would not purchase from a lemonade stand.
c. A random number generator could not choose the correct families to participate
D. Betsy did not survey enough people in her town.
Answer:
I think it is D
Step-by-step explanation:
What fraction is 1.64 equal to?
Answer:
41/25
Step-by-step explanation:
Sam bought 8 new trading cards to add to his collection. the next day his dog ate half of his collection. there are now only 40 cards left. how many cards did sam start with?
Answer:
(8 + A) = 80 / 2 =40
A=72
Step-by-step explanation: Simple if sam bought 8 trading cards he obviously had some to start with and if half of that was 40 then the complete set was 80 and 80 - 8 is 72.
select the correct answer
which of these mappings is a function
Answer:
B. X
Step-by-step explanation:
the other functions have same x and different y which makes them non existant
Aimee deposited $250 into a savings account with the simple interest of 6% per year.
After 4 years, how much money, in total, will she have in her account?
Answer:
Step-by-step explanation:
Interest=principal*rate*time/100
Interest=240$
Amount= principal + interest
Amount=$490
How to write a book report plz help
Answer:
[tex]name \: of \: the \: book \\ auther \: of \: book \\about \: auther \: shortly \\ content \: of \: the \: book \\ comparison \: with \: any \: social \: issue \\ relevence \: of \: that \: in \: present \: days \\ important \: peoples \: thoughts \: about \: that \: book \\ ur \: opinion \: about \: it \\ i \: hopethis \: helps \: you[/tex]
Answer:
Depends on the level, you are writing!! Check the pictures below.
Step-by-step explanation:
Can anyone plz ans it correctly I will mark as brainliest plz ans it correctly
1. ∠AGH
Alternate angle — ∠DHG
Corresponding angle — ∠CHF
Co-interior angle — ∠GHC
Vertically opposite angle — ∠EGB
2. ∠CHG
Alternate angle — ∠BGH
Corresponding angle — ∠AGE
Co-interior angle — ∠AGH
Vertically opposite angle — ∠FHD
3. ∠DHG
Alternate angle — ∠AGH
Corresponding angle — ∠BGE
Co-interior angle — ∠HGB
Vertically opposite angle — ∠CHF
4. ∠BGH
Alternate angle — ∠CHG
Corresponding angle — ∠DHF
Co-interior angle — ∠GHD
Vertically opposite angle — ∠AGE
Round your answer to the nearest hundredth
Answer:
∠ B ≈ 64.62°
Step-by-step explanation:
Using the cosine ratio in the right triangle
cosB = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{BC}{AB}[/tex] = [tex]\frac{3}{7}[/tex] , then
∠ B = [tex]cos^{-1}[/tex] ([tex]\frac{3}{7}[/tex] ) ≈ 64.62° ( to the nearest hundredth )
An airplane heads in the direction of N25°E at 325 mph. A tailwind is blowing in the direction N40°W at 50 mph. What is the actual velocity of the plane?
A) 315.786 mph
B) 349.084 mph
C) 438.064 mph
D) 121860.018 mph
In order to fully understand the actual velocity of the airplane bearing, we've carefully drawn out the sketch.
From the image below, by applying the cosine rule to calculate the actual velocity of the plane from the starting point, we have:
b² = a² + c² - 2ac Cos B
where;
a = 50 mph c = 325 mph∠B = 65° + 50° = 115°b² = (50² + 325²) - (2 × 50 × 325 × Cos 115°)
b² = 2500 + 105625 - (32500 × (-0.4226))
b² = 108125 - (-13734.5)
b² = 121859.5
[tex]\mathbf{b =\sqrt{121859.5 }}[/tex]
b = 349.08 mph
Therefore, we can conclude that the actual velocity of the airplane from its starting point is 349.08 mph.
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calculate the total surface area of the give cuboid
Navigate 6 plus negative 2
-8 is the answer
Step-by-step explanation:
hope it will help you
The perimeter of Stephanie’s triangle is half the perimeter of Juan’s triangle. Juan’s triangle is shown. Write a numerical expression to describe the perimeter of Stephanie’s triangle.
The perimeter of a triangle is the sum of all side lengths of the triangle. The numerical expression for the perimeter of Stephanie's triangle is: [tex]\frac 12 \times 25[/tex]
Let the sides of Juan's triangle be x, y and z. So:
[tex]x = 5 \\ y = 8\\ z = 12[/tex]
The perimeter (J) of Juan's triangle is calculated by adding all sides.
So:
[tex]J =x +y +z[/tex]
This gives:
[tex]J =5 + 8 + 12[/tex]
[tex]J =25[/tex]
From the question, we understand that:
The perimeter (S) of Stephanie's triangle is half that of Juan.
This means that:
[tex]S = \frac 12J[/tex]
Substitute 25 for J
[tex]S = \frac 12 \times 25[/tex]
Hence, the numerical expression for the perimeter of Stephanie's triangle is: [tex]\frac 12 \times 25[/tex]
Read more about perimeters at:
https://brainly.com/question/11957651
find x if b is the midpoint of the line AC.
AB=6x-6 and BC=72
Answer:
[tex]if \: b \: is \: the \: mid \: point \: then \: \\ ab = bc \\ then \: 6x - 6 = 72 \\ 6x = 72 + 6 \\ 6x = 78 \\ x = \frac{78}{6} \\ x = 13 \\ thank \: you[/tex]
This question is simply about division of line segments.
x = 13
We see that point B is the mid point of line AC. This means that;
AB = AC
Now, since AB = 6x - 6 and BC = 72Thus, 6x - 6 = 72
Add 6 to both sides to get;
6x = 78
divide both sides by 6 to get;
x = 13
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Y=DB-3 solve for d. These equations are still tricky for me.
Which expression is equivalent to(2^3)^-5
Answer:
23
Step-by-step explanation:
Answer:
1/32
Step-by-step explanation:
First you must multiply the 3 and the -5 because the -5 is out of the parenthases. then you will get 2^-15. You cannot have a negative exponent so you chance it to 1/2^15. Then simplify to get the answer
Perform the indicated operation.Perform the indicated operation.
-50
-95
-20
none of the above
PLEASE HELP ASAP!!!!
[tex]Hello[/tex] [tex]There![/tex]
Quite easy...
It's -20.
Hopefully, this helps you!!
P.S I love late points.
:>
[tex]AnimeVines[/tex]
At the end of a snowstorm, Katherine had 18 inches of snow on her lawn. The temperature then increased and the snow began to melt at a constant rate of 2.5 inches per hour. Assuming no more snow was falling, how much snow would Katherine have on her lawn 4 hours after the snow began to melt? How much snow would Katherine have on her lawn after t hours of snow melting?
After 4 hours of snow melting, there would be 8 inches of snow with the rate of 2.5 inches per hour Katherine would have on her lawn and after t hours the snow would be = 18 - 2.5*t inches.
In this question, the amount of snow melted is required to calculate to know the amount of snow on the lawn, can be calculated by:
the melted amount = rate of melting × timeGiven:
The total amount of snow = 18 inches
Rate of melting = 2.5 inches
Time = 4 hours
Solution:
The amount melted needs to be calculated first in order to find left snow, therefore, putting values in the formula mention above,
the melted amount = rate of melting × time
the melted amount = 2.5 × 4 inches
the melted amount = 10 inches
Then the final amount would have on the lawn = starting amount−melted snow
= 18−10 inches
= 8 inches
Part b) Snow after t hours:
Starting amount= 18 inches
Melted snow= inches per hour×t
= 2.5×t
= 2.5t
Final amount = starting amount−melted snow
= 18 -2.5t
Thus, the correct answer is - 8 inches and 18 -2.5t
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An airplane travels due east 75 miles and then due north 65 miles. How far is the airplane from its starting point? Round to the nearest hundredth of a mile.
I will mark brainliest
Answer:
99.25 milesStep-by-step explanation:
The straight line from the starting point forms a hypotenuse of the right triangle with the legs 75 and 65 miles. Use Pythagorean.
The distance is:
[tex]\sqrt{75^2+65^2} = \sqrt{9850} = 99.25[/tex] miles (rounded)Using Pythagorean theorem
[tex]\\ \rm\longmapsto H^2=P^2+B^2[/tex]
[tex]\\ \rm\longmapsto H^2=75^2+65^2[/tex]
[tex]\\ \rm\longmapsto H^2=9850[/tex]
[tex]\\ \rm\longmapsto H=\sqrt{9850}[/tex]
[tex]\\ \rm\longmapsto H=99.247[/tex]
[tex]\\ \rm\longmapsto H=99.25miles[/tex]
Evaluate the following expresslon: -2|9|.
18
-11
-18
11
Answer:
-18
Step-by-step explanation:
The absolute value is only on the 9, and the absolute value of positive 9 is positive 9. Multiply by negative 2 and you get -18.
we are 5 red marbles a blue marbles and travel marbles in a bag separate rows are performed with the results and table what is the experiment property of randomly during green marble red pen blue 1228a what is the experiments of purposive random drawing green apple by does it sell it for profit of randomly drawn a green marble see what would you expect to happen if Mars has an experiment performed explain your reasoning using complete sentences
Answer:
elon musk
Step-by-step explanation:
he is a god on earth who drinks apples while eating tables in the milk ecosystem when hulk killed superman in washington-nigeria.
276.4 rounded to the nearest tenth
Answer:
This is the nearest tenth already.
Answer:
276.4 rounded to the nearest tenth = 276.4
Step-by-step explanation:
round 276.4 to the nearest tenth, leaving only one number after the decimal point, then you have come to the right post.
See the attachment for more examples
Find the value of x.
[tex]180^o-130^o=50^o\\\\90^o+50^o=140^o\\\\x=180^o-140^o\rightarrow\boxed{x=40^o}[/tex]
A large power plant generates 7.1 gigawatts of electrical power.
A large power plant generates_watts of electrical power. (Use the multiplication symbol in the math palette as needed)
8. Raul made four of his truck payments late and
was fined four late fees. The total change to his
savings from late fees was -$40. How much was
the one-time late fee?
Round to the nearest thousand. 5,568
Answer:
Round to the nearest thousand.
5,568
= 5,000
Round to the nearest thousand
5,568
= 5,000
If P={2,3,4} and Q={1,5} find and represent it in set builder form
Step-by-step explanation:
Solution,
P={2,3,4}
P={x:x ∈ N between 1 and 5}
Q={1,5}
Q={x:x ∈ factors of 5}
I hope you were asking for the same answer .
I hope it helped U
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