Nina is correct,
Hope this helped
XD XD XD XD XD
I need help on this problem by tonight please help I will leave a picture in here
Answer:
3. irrational
4. rational
5. rational
6. natural, whole, integer, rational
Step-by-step explanation:
Out loud. Find the solution to the expression in the easiest way:
2 14/49 - (7 3/85- 3 35/49)
Answer:
-88/85
Step-by-step explanation:
2 14/49=112/49
7 3/85=598/85
3 35/49=182/49
------------------------
112/49-(598/85-182/49)
112/49-1976/595
-88/85
1 5/8÷(−1 3/5) please help
Answer:
-65/64
Step-by-step explanation:
1 5/8/(-1 3/5)
1 5/8=13/8
-1 3/5=-8/5
(13/8)/(-8/5)
(13/8)(-5/8)
-65/64
Lisa bought six dog toys. Each dog toy costs the same amount. She spent a total of $10.50. Write an expression that represents the situation. Use d to represent the cost of each dog toy.
Answer:
Each dog toy costs $1.75.
Step-by-step explanation:
6x=10.5
x=10.5/6
x=1.75
Mrs. Smith needed to split 28 students into 4 equal groups for the race. Which step could help her to work 30 divided by 3?
(A) (27 divided by 9) + (9 divided by 3)
(B) (24 divided by 4) + (4 divided by 4)
(C) (21 divided by 3) + (9 divided by 3)
(D) (20 divided by 4) + (10 divided by 4)
Answer:
Procedure in option C only works.
Step-by-step explanation:
We have to select the process in which Mrs. Smith can help her to work 30 divided by 3.
(A) (27 divided by 9) + (9 divided by 3) = 3 + 3 = 6
But (30 ÷ 3) = 10 ≠ 6
(B) (24 divided by 4) + (4 divided by 4) = 6 + 1 = 7 ≠ 10
(C) (21 divided by 3) + (9 divided by 3) = 7 + 3 = 10
(D) (20 divided by 4) + (10 divided by 4) = 5 + 2.5 = 7.5 ≠ 10
So, procedure in option C only works. (Answer)
Again, we can prove the procedure in the following way:
[tex]\frac{30}{3} = \frac{21 + 9}{3} = \frac{21}{3} + \frac{9}{3}[/tex]
{Which is the distributive property of division}
what is the greatest common factor of 12, 40 and 68
Answer:
4 is the greatest
Step-by-step explanation:
write the solution in set builder notation
-2(2x+8)>-16-4x
Good evening ,
Answer:
The set of solutions is IR
Step-by-step explanation:
-2(2x+8)>-16-4x ⇌ -4x-16>-16-4x
Any x∈IR verify the inequality
then The set of solutions is IR.
:)
What is the relationship between the ratios? 5/8 and 8/10 Drag and drop to complete the statement.
The ratios are proportional or not proportional
Answer:
NOT PROPORTIONAL
Step-by-step explanation:
The given two fractions are: [tex]$ \frac{5}{8} $[/tex] and [tex]$ \frac{8}{10} $[/tex].
Proportional fractions are those which have the same value when to reduced to the simplest form.
Consider two fractions [tex]$ \frac{p}{q} $[/tex] and [tex]$ \frac{x}{y} $[/tex].
We say they are proportional if [tex]$ p : q = x : y $[/tex].
Or, if [tex]$ py = qx $[/tex] then we can say the fractions are proportional.
Here the fractions are: [tex]$ \frac{5}{8} $[/tex] and [tex]$ \frac{8}{10} $[/tex].
LHS: 5 X 10 = 50.
RHS: 8 X 8 = 64.
Clearly they are not equal. So, we can say these two fractions are not proportional.
What is the equation of the line that all inverses reflect across?
So if you're asked to graph a function and its inverse, all you have to do is graph the function and then switch all x and y values in each point to graph the inverse. Just look at all those values switching places from the f(x) function to its inverse g(x) (and back again), reflected over the line y = x.
The equation of the line across which all inverses reflect is y = x. This reflection principle applies to linear functions, hyperbolas, and other mathematical relations where inverses can be found by interchanging the roles of x and y.
The equation of the line that all inverses reflect across is y = x. This is because when you are finding the inverse of a function, you swap the x and y variables, thus mirroring the original function across the line y = x. If you have a linear function in the slope-intercept form (y = mx + b), and you find its inverse, assuming the function is one-to-one and therefore has an inverse, you would essentially swap the x and y coordinates, resulting in the equation of its inverse. This process reflects each point of the original function across the line y = x.
As an example, for a line with an equation y = -x + 1, the inverse when reflected across the line y = x would result in swapping x and y to get x = -y + 1, which when solved for y, gives the inverse function's equation. Conversely, for a function expressed in another form, such as a hyperbola or a set of simultaneous linear equations, the principle is the same: to find the inverse, interchange the roles of the dependent and independent variables. For instance, a hyperbola described by y = a - b/x could have its inverse derived by interchanging x and y, leading to the inverse relation x = a - b/y.
What is the number of the terms of geometrical sequence if its first, fourth and the last term is equal to 2, 54 and 486 respectively.
Answer:
The number of terms of the G.P. is 6
Step-by-step explanation:
Let the G.P. has first term a, common ratio r and the number of terms n.
The G.P. has first term 2, so a = 2.
Now, the fourth term is 54 i.e. ar³ = 54
⇒ 2r³ = 54
⇒ r³ = 27
⇒ r = 3
Now, the last term i.e. the nth term is= [tex]ar^{n - 1} = 486[/tex]
⇒ [tex]2 \times 3^{n - 1} = 486[/tex]
⇒ [tex]3^{n - 1} = 243 = 3^{5}[/tex]
Hence, (n - 1) = 5
⇒ n = 6
So the number of terms of the G.P. is 6 (Answer)
√6(7+√2)
Please solve and list steps
√6(7+√2)
Use the distributive property:
√6 * 7 + √6 * √2
Move the 7 to the left:
7 * √6 + √6 * √2
Use the product rule for radicals on √6 * √2
7 * √6 + √(6*2)
Simplify:
7√6 + √12
Rewrite 12 as 2^2*3
7√6 + √(2^2*3)
Pull terms out from under the radical for final answer:
7√6 + 2√3
An 8-ft-by-10-ft rug leaves 1 ft of the bedroom floor exposed an all four sides. Find the perimeter of the bedroom floor.
To find the perimeter of the bedroom floor, subtract the rug's length and width from the floor's length and width. Then, use the formula 2(length + width) to calculate the perimeter. The perimeter of the bedroom floor is 64 ft.
Explanation:To find the perimeter of the bedroom floor, we need to subtract the length and width of the rug from the length and width of the floor. The length of the floor is 10 ft and the rug leaves 1 ft exposed on each side, so the length of the rug is 8 ft. Similarly, the width of the floor is 8 ft and the rug leaves 1 ft exposed on each side, so the width of the rug is 6 ft. Therefore, the perimeter of the bedroom floor is 2(10 ft + 8 ft) + 2(8 ft + 6 ft) = 2(18 ft) + 2(14 ft) = 36 ft + 28 ft = 64 ft.
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Sal is saving for a new bike that will cost him $150. He currently has $35 and can save $23 per week. How many weeks will it take him to earn enough money for the bike?
Let w equal the number of weeks that Sal saves his money. Select an equation and solution that matches this situation.
23w+35=150; Sal will have enough money in 5 weeks.
23w+35=150; Sal will have enough money in about 8 weeks.
150−23w=w; Sal will have enough money in 24 weeks.
35w+23=150; Sal will have enough money in about 5 weeks.
35w+23=150; Sal will have enough money in about 138 weeks.
[A] 23w + 35 = 150 ; Sal will have enough money in 5 weeks.
We can see 35 as the starting value since he already has that amount when he started saving up money. We can subtract it (150 - 35 = 115). Then we can divide (115 / 23 = 5). It took Sal 5 weeks to save enough money for the bike. The first option makes the most sense because the expression can be solve to find how many weeks he save up his money.
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The table below shows the numbers of tickets sold at a movie theater on Friday.
NUMBER OF TICKETS SOLD
Day
Adult Tickets
Children's
Tickets
1,678
976
Friday
Saturday
The number of each type of ticket sold on Saturday is described below.
• Adult tickets—2 times as many as the number of adult tickets sold
on Friday
• Children's tickets-3 times as many as the number of children's
tickets sold on Friday
Complete the table above to show the numbers of tickets sold on Saturday.
What is the total number of tickets sold over these two days?
Answer:
Number of Adult's tickets sold on Saturday = 3,356
Number of Children's tickets sold on Saturday = 2, 928
Total number of tickets sold over these two days is 8,938.
Step-by-step explanation:
Here, the number of tickets sold on FRIDAY:
Adult Ticket sold = 1,678
Children's Tickets sold = 976
So, the total number of tickets sold on Friday
= Sum of ( Adult + Children's ) tickets = 1,678 + 976 = 2,654 .... (1)
The number of tickets sold on SATURDAY:
Adult Ticket sold = 2 times the number of adult tickets sold on Friday
= 1,678 x 2 = 3,356
Children's Tickets sold = 3 x the number of children's tickets sold on Friday.
= 976 x 3 = 2, 928
So, the total number of tickets sold on Saturday
= Sum of ( Adult + Children's ) tickets = 3,356 + 2,928 = 6, 284 .... (2)
Now, the total number of tickets booked in these two days :
Sum of tickets booked on (Friday + Saturday)
= 2,654 + 6, 284 = 8,938
Hence, total number of tickets sold over these two days is 8,938
If the radius of a circle with an area of 11.5 inches squared is multiplied by 6, what is the area of the new circle?
69 in squared
207 in squared
216.66 in squared
414 in squared
Answer:
The correct answer is D. 414 in squared.
Step-by-step explanation:
1. Let's review the information given to us for solving the question:
Area of the first circle = 11.5 inches ²
2. Let's calculate the area of the new circle, given that the radius of the first circle is multiplied by 6.
Area of the first circle = 11.5 inches ²
Let's find the radius:
π * r² = 11.5
r² = 11.5 / 3.1416
r² = 3.66055513
r = 1.91 inches
The first circle has a radius of 1.91 inches
So, the radius of the second circle is 1.91 * 6 = 11.48 inches
Area of the second circle = π * r²
Area of the second circle = 3.1416 * 11.48²
Area of the second circle = 3.1416 * 131.79
Area of the second circle = 414.03 inches ²
Area of the second circle = 414 inches ² (Rounded to the nearest whole number)
The correct answer is D. 414 in squared.
An item is regularly priced at $50.It is now priced at a discount of 80% off the regular price. What is the price now?
If the item is 80% off than the sale price is only 20% of the original price.
So, 20% x $50 = $10
WILL GIVE 15 POINTS!
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Which situations can be simulated using this spinner? Select three options.
Predicting the gender of a randomly chosen art teacher if 1 of 3 art teachers is female
Predicting the gender of a randomly chosen history teacher if 12 of 15 history teachers are female
Predicting the gender of a randomly chosen biology teacher if 8 of 12 biology teachers are female
Predicting the gender of a randomly chosen chemistry teacher if 4 of 9 chemistry teachers are female
Predicting the gender of a randomly chosen health teacher if 2 of 4 health teachers are female
There are 6 sections on the spinner
Answer:
Step-by-step explanation:
- Predicting the gender of an arbitrarily picked craftsmanship educator if 1 of 3 workmanship / art instructors is female .
- Predicting the gender of a haphazardly picked science / biology instructor if 8 of 12 biology educators are female .
- Predicting the gender of a haphazardly picked health educator if 2 of 4 health instructors are female .
Answer:
1/3 8/12 2/4
Step-by-step explanation:
Because they involve 6
you deposited 500 in an account that pays 3.25 annual interest compounded monthly. About how long does it take for the balance to quadruple?
Answer:
42 years, 9 months
Step-by-step explanation:
Using the compound interest formula Accrued Amount = P (1 + r/n)^(nt)
where Accrued amount (A) which is quadruple the initial deposit
A = 4 x 500 = $2000
P = principal; $500
r = 3.25% = 0.0325
t = number of years
n = number of times interest is compounded = 12 for monthly
Therefore
2000 = 500 (1 + 0.0325/12)^(12t)
Therefore
(1.002708)^12t = 2000/500
(1.002708)^12t = 4
finding the log of both sides
12t x log 1.002708 = log 4
12t x 0.001174 = 0.6021
12t = 0.6021/0.001174
12t = 512.83
t = 512.83/12
t = 42.7
which is estimated as 42 years, (0.7 x 12 = 9) months
hence it takes about 43 years to quadruple the deposit
The number of years it will take to be the amount by quadruple will be 42.7 years.
What is compound interest?Compound interest is applicable when there will be a change in the principal amount after the given time period.
As per the given,
The total amount will be,
A = 4 × 500 = $2000
Principle amount P = $500
Rate of interest r = 3.25% = 0.0325
The time period is t.
n = number of times interest is compounded
n = 12
By compound interest formula,
2000 = 500 [tex](1 + 0.0325/12)^{12t}[/tex]
(1.002708)^12t = 2000/500
(1.002708)^12t = 4
Take logs on both sides,
12t × log 1.002708 = log 4
12t × 0.001174 = 0.6021
12t = 0.6021/0.001174
12t = 512.83
t = 512.83/12
t = 42.7
Thus, the time period will be 42.7 years.
Hence "The number of years it will take to be the amount by quadruple will be 42.7 years.".
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In the xy coordinate plane, the slope of a line is 4 and it passes through the point (1, 3). Find the equation of a line that is parallel to the given line and passes through the point (3, 1)
Answer: Y=-1 or Y=-1+4
Step-by-step explanation:
Use the formula y2- y1 over x2-x1 so it should look like this 1-3 over 3-1 which is -2 over 2 then you divide that which is -1 and if you have to find one all you have to do is use one point label which is x and y so I pick (1,3) so you put 3=-1(1) once you have that you multipy so -1 times 1 is -1 so your gonna add 1 to the -1 and the three the -1 cancel out because it is a zero pair 3+1 is 4 so B=4To find the equation of a line parallel to the given line and passing through a specific point, we can use the point-slope form of a linear equation.
Explanation:To find the equation of a line that is parallel to the given line and passes through the point (3, 1), we need to use the fact that parallel lines have the same slope. Since the given line has a slope of 4, the parallel line will also have a slope of 4. Using the point-slope form of a linear equation, we can write the equation as:
y - y1 = m(x - x1)
Plugging in the values from the given point (3, 1) and the slope (4), we get:
y - 1 = 4(x - 3)
Simplifying the equation, we have:
y - 1 = 4x - 12
y = 4x - 11
Therefore, the equation of the line that is parallel to the given line and passes through the point (3, 1) is y = 4x - 11.
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What is the expression for add g to 4, then subtract 5 from the result?
Answer:
g+4-5
Step-by-step explanation:
because the plus would go first anyways.
Write an explicit furmula for the question below
40 points!!!!!!!!!!!!!
Answer:
aₙ = a₁ . 5⁽ⁿ⁻¹⁾
Step-by-step explanation:
The first term in the sequence is a₁ = 6.
a₂ = 30. a₃ = 150.
We see that each consecutive term is multiplies by 5 to arrive at the next term.
That is: a₂ = 30 = a₁ . [tex]$ 5^{2 - 1} = 5 $[/tex] = 6.5 = 30.
Similarly, a₃ = 150 = 6 [tex]$ \times $[/tex] [tex]$ 5^{3 - 1} = 5^2 = 25 $[/tex]
Generalizing this, we have:
aₙ = a₁ . [tex]$ 5^{n - 1} $[/tex]
This is called the recursive formula of the sequence.
There are 6 lollies in a packet
A teacher buys 25 packets and divides them equally amping her students
Each student gets 4 lollies and there are 22 lollies left over.
How many students are there altogether?
Answer:
5
Step-by-step explanation:
Answer:
32
Step-by-step explanation:
multiply 25×6 =150
subtract 150-22 = 128
128÷4
32
7 more than a number is -3
Answer:
4
Step-by-step explanation:
7-3 pretty much
Answer: x=-10
Step-by-step explanation:
let x be that number
so, 7+x=-3
subtract 7 on both sides and...
x=-10
Alex buys 5 DVDs. Each DVD costs $9. If Alex receives a $2 discount on each DVD, what is the total amount of money alex apends? Write an expression that matches the words
Answer:
The total amount of money Alex spends on 5 DVD = $ 35.
Step-by-step explanation:
Total number of DVD purchased by Alex = 5
The cost of each DVD = $9
So, the total cost of purchasing 5 DVD = 5 x ( csot of 1 DVD)
= 5 x ( $ 9) = $ 45
Now , the discount if 1 DVD = $ 2
So, the total discount of 5 DVD = 5 x ( Discount on1 DVD)
= 5 x ($ 2) = $ 10
⇒ The total amount Alex spends
= Total cost of 5 DVD - Discount on 5 DVD
= $ 45 - $ 10 = $ 35
Hence, the total amount of money Alex spends on 5 DVD = $ 35.
A motorboat leaves a harbor and travels at an average speed of 15 mph
toward an island. The average speed on the return trip was 10 mph. How far was the
island from the harbor if the total trip took 5 hours?
Answer:
30 miles
Step-by-step explanation:
We know
D = RT
Where
D is the distance
R is the rate
T is the time
Towards Island:
R = 15
Let time be x
So, we can write:
D = 15x
Return from Island:
R = 10
Let time be y
So, we can write:
D = 10y
Also, total time is 5 hours, so we can write:
x + y = 5 [equation 2]
Now, since the distance for both legs of the journey is equal, we can write:
Distance 1 = Distance 2
15x = 10y
Now we replace this equation with equation 2, so we get:
Equation 2: x + y = 5 or x = 5 - y
15x = 10y
15(5 - y) = 10y
75 - 15y = 10y
75 = 25y
y = 75/25
y = 3
Distance 2 = D = 10y
Replacing y with 3, we get:
D = 10y
D = 10(3)
D = 30
So, the distance to island is 30 miles
x-4y=-21
8y-x=45
Solve the system
(X,y)=
Answer:
[tex]\displaystyle (3, 6)[/tex]
Step-by-step explanation:
{x -4y = −21
{8y - x = 45
_________
[tex]\displaystyle \frac{4y}{4} = \frac{24}{4} \\ \\ [/tex]
[tex]\displaystyle y = 6[/tex][Plug this back into both equations above to get the x-coordinate of 3]; [tex]\displaystyle 3 = x[/tex]
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Five math questions
1.) 7+5 > 6+2
2.) g ≥ 8
3.) s = -2, -8
4.) from the middle and beyond (best way i can answer)
5.)
b < 11 = The board is shorter than 11 cm
b > 11 = The box contains more than 11 books
b < 12 = There are fewer 12 beetles in a jar
b > 12 = The building is taller than 12 ft.
Answer:
1. 6 times 5
2. 7/6 simplified
3. 4 times 13
4. 45 divided by 1 1/6
5. 10 as a proporation
Step-by-step explanation:
help ASAP!
The dinner check was $85.00. If Tyler gave the waiter a 20% tip, how much was the tip?
The dinner check was $85.00. If Tyler gave the waiter a 20% tip, how much did Tyler spend in total?
Answer: The tip is $17. The total amount he paid is $102.
Step-by-step explanation: 85 times .2 gets the tip, then you add that sum to the subtotal.
In triangle ABC mzA -45, mzB = 40", and a = 7. Which equation should you
solve to find b?
Answer:
Option A. [tex]\frac{sin(45\°)}{7}=\frac{sin(40\°)}{b}[/tex]
Step-by-step explanation:
we know that
Applying the law of sines in the triangle ABC
[tex]\frac{sin(A)}{a}=\frac{sin(B)}{b}[/tex]
substitute the given values
[tex]\frac{sin(45\°)}{7}=\frac{sin(40\°)}{b}[/tex]
[tex]b=\frac{7}{sin(45\°)}sin(40\°)\\\\b=6.4\ units[/tex]
calculate the Ek of a car which has a mass of 1000 kg and is moving at the rate of 20 m/s
The kinetic energy (Ek) of the car with a mass of 1000 kg moving at a speed of 20 m/s is calculated using the formula Ek = 0.5 * m * v². Substituting the given values, we find the kinetic energy to be 2.00 x 10⁵ Joules.
Explanation:To calculate the kinetic energy (Ek) of a car with a given mass and speed, you can use the formula Ek = 0.5 * m * v², where m is the mass, and v is the speed. In this case, the mass (m) of the car is 1000 kg, and the velocity (v) is 20 m/s.
Substituting the given values into the formula, we have Ek = 0.5 * (1000 kg) * (20 m/s)². This simplifies to Ek = 2.00 x 10⁵ J (Joules), which is the kinetic energy of the car.
It's important to note that kinetic energy always has units of Joules in the International System (or SI), and it represents the energy that an object has due to its motion.
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