Marlene purchased 20 stamps at the post office for $8.40. What is the cost of one stamp?
Answer:
they were .42¢ a piece I think this is right
The cost of one stamp will be $0.42.
What is Division method?Division method is used to distributing a group of things into equal parts. Division is just opposite of multiplications. For example, dividing 20 by 2 means splitting 20 into 2 equal groups of 10.
Given that;
Marlene purchased 20 stamps at the post office for $8.40.
Now,
Since, The cost of 20 stamps = $8.40
Hence, The cost of 1 stamp = $8.40 / 20
= $0.42
Thus, The cost of 1 stamp = $0.42
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-9 + 5y - 7y + 3y = ?
Answer:
-9 + y
Step-by-step explanation:
For this problem, you have to combine like terms.
-9 is the only number that doesn't have a variable.
5y, -7y, 3y have all the the same variables, so we'll combine those.
5y - 7y = -2y
-2y + 3y = 1y
Solution: -9 + y
Help me on this plsss
Answer:
tried my best 2 help
Step-by-step explanation:
2.circumference = pi x diameter
c = pi x (8x2)
c= 50.2654824574
3. when measuring physical objects,
4. to find the length around an object such as your waist when buying a top ???? couldnt think of anything else
The heights of the three tallest boys in a fifth–grade class are 1.575 m, 1.526 m, and 1.474 m. Which is one of the three boys' heights rounded to the nearest hundredth of a meter?
answers
1.57 m
1.48 m
1.52 m
1.47 m
Answer:
D. 1.47
Step-by-step explanation:
Answer:
1.47
Step-by-step explanation:
Noah already has $10.50, and he earns $3 each time he runs an errand for
his neighbor. Noah wants to know how many errands he needs to run to
have at least $30.*
what is the inequality?
Answer:
3e + 10.50 ≥ 30
Step-by-step explanation:
Fwam answered 142 questions correctly on his multiple choice science final that had
a total of 200 problems. What percentage of questions did Fwam answer correctly on
the final exam?
Answer:
71%
Step-by-step explanation:
Percentage Chart
X is what percent of 200?142 is71% of 200143.26 is71.63% of 200144.64 is72.32% of 200146.02 is73.01% of 200
Brenda wants to attach a string of beads along the circular bottom edge of the lampshade shown
below. The diameter of the bottom of the lampshade is 16 centimeters.
About how many centimeters long should Brenda make the string of beads?
Answer:
its 50
Step-by-step explanation:
if y varies direckly as x and y =12 when x = 4, find y when x = 12.
a lesson starts at 2:30 it lasts for 55 minutes. when does the lesson end
Answer:
it ends in 3:25
Step-by-step explanation:
2:30+0:30=3:00
55-30=25
3:00+0:25=3:25
3:25
The distance from the ladder to the end of the side is 5 ft. The distance from the top of the ladder to the bottom is 13 ft long! HOW TALL IS IT? WILL MARK BRAINLIEST
Answer:
12 ft
Step-by-step explanation:
Note that you have a right triangle here, with hypotenuse 13 ft, and base 5 ft. Using the Pythagorean Theorem, we find the height of the upper tip of the ladder as follows:
(13 ft)^2 = y^2 + (5 ft)^2. Then y^2 = 144 ft^2, and y =height= 12 ft
I need help like actual help
Answer:
look at the explanation
Step-by-step explanation:
hey hey. i’ll help you. sorry if this is long. :)
okay so let’s think about this. there’s a lot of extra information that we don’t need so let’s get rid of everything up to ”7 years”.
now.. she works 40 hours per week right? and she makes $2.13 per hour. so now that we have that, let’s think what 40 x $2.13 is. if you do the math right you should get 85.2 or $85.20. so that’s in one week, but then in a typical week sheserves 75 tables that have an average bill of $4q. so now that we have those numbers, we take 41 x 75 then add it to our weekly number. so we multiply the two together and we get 3075. not 30.75 but $3075.00! so take that and add it to 85.20.. you should get 3160.2, or $3160.20. but then typically an 18% tip, so let’s go back to the number before (41) and find what 18% of 41 is.
18% of 41 is 7.38 or in this case, $7.38. so once we have that, you’re gonna want to multiply 7.38 by 75 to get that total. if you do that you should get 553.5
okay.. now we have all the numbers we need. we’re already basically done, we just need to add the tips to the other total!
$3160.20 + $553.50 = $3713.70
so in a week, she makes $3713.70
i hope this helped you! good luck!
Answer:
Answer vary :
$85.20
Step-by-step explanation:
i did it on the question thing comments. And I’m super positive it’s right.
What is the value of sin 43° to the nearest ten-thousandth?
Answer:
0.6819
Step-by-step explanation:
The value of sin 43° to the nearest ten-thousandth will be 0.682
Sine functionIn trigonometry, the sine function can be defined as the ratio of the length of the opposite side to that of the hypotenuse in a right-angled triangleThe sine function sin x is one of the basic functions encountered in trigonometryHow to solve this problem?The steps are as follow:
First take calculator and press the sin function buttonAfter entering the sin function button enter the value 43After entering the value 43 press the equal to buttonAnd the answer will be shown on screen will be 0.681999...As in the question stated we have round off to the nearest ten-thousandthSo, the value of sin 43° to the nearest ten-thousandth will be 0.682
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Daniel has saved $120. This is 80% of the money he needs to buy a new skateboard.
a. How much does the skateboard cost?
b. How much more money does he need? Plz help me itd Due TODAY
Answer:
KSNXKSNOWOZKANZKSXKWNXKWBX
plz answer all of them
Answer:
ace
Step-by-step explanation:
Answer:
See attached
Step-by-step explanation:
Solution in the picture
I'm confused, please help. :/
uh i did this wrong so uh just ignore what i said
Answer:
82°
Step-by-step explanation:
Angle C and B equal the measure of angle A so,
143 - 61 = 82
Angle B is 82°
The sinusoidal function f(x)=33sin(7x−π12)+33 models the height, in centimeters, that a valve stem of the a tire is above ground x seconds after the tire begins to rotate.
How long does it take the valve stem to complete one revolution?
Answer:
0.90 seconds
Step-by-step explanation:
We will see that one complete revolution takes (2π/7) seconds.
How long does it take the valve stem to complete one revolution?Here we have the function:
f(x) = 33sin(7x−π/12) + 33
The time needed to do a full revolution is given by the period of the function.
Remember that:
sin(x) = sin(x + 2π).
Then:
sin(7x−π/12) = sin(7*(x + T) −π/12)
Then we must have:
2π = 7*T
Where T is the period.
Solving for T, we have:
2π/7 = T
This means that one complete revolution takes (2π/7) seconds.
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please can someone help me asap i should find the roots (zeros) of this equation:
f(x) = x^4 -6x^3 + 12 x^2 -8 x
please
Answer:
1/2-1/2, 3
Step-by-step explanation:
Notice that the ratio of the first and second terms is the same as that between the third and fourth terms. So this cubic will factor by grouping:
Find the common difference for the given sequence.
1.05, 1.1, 1.15, 1.2, ...
0.5
0.05
0.005
the question is in the photo
Answer:
d is vertical so its 70 b c and a combined is also vertical to e so we have 110
Step-by-step explanation:
what is the sum?
[tex] \binom{3}{5} + \binom{1}{5} [/tex]
Answer:
4/5
Step-by-step explanation:
34 < 5x + 9 < 44
Inequality
Answer:
5 < x < 7
Step-by-step explanation:
- Move all terms not containing x from the center section of the inequality.
25 < 5 x < 35
- Divide each term in the inequality by 5 .
5 < 1x < 7
5 < x < 7
i hope this helps :)
what are the y-intercepts to graph the equation-4x - 3y = 36
Answer:
Y-Int = -12
Step-by-step explanation:
First, I would change the equation to slope intercept form:
-3y = 36 + 4x
3y = -36 - 4x
y = -12-4/3x
y = -4/3x - 12
-12 is the y-intercepts to graph the equation-4x - 3y = 36
What is slope intercept form of line?The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.
The given equation is -4x-3y=36
Now let us convert the given equation to slope intercept form y=mx+b
where m is the slope and b is the y intercept
Isolate the term y
-3y=36+4x
Divide both sides by 3
-y=36/3+4/3x
Multiply both sides by -
y=-12-4/3x
y=-4/3x-12
Slope is -4/3 and y intercept is -12
Hence, -12 is the y-intercepts to graph the equation-4x - 3y = 36
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Triangle A
Triangle B
Which of the following sequences of transformations will carry triangle A onto triangle B?
O A. Rotate triangle A 90° clockwise about (-1,-4), reflect it over the x-axis, and translate it 3 units to the left.
ОВ.
Translate triangle A 1 unit up and 1 unit to the left, rotate it 90° clockwise about the origin, and reflect it over the y-axis.
Answer:
A
Step-by-step explanation
A
Answer:
Do not trust his answer!! its B
Step-by-step explanation:
I did this question and i picked A because the other person said too but it was wrong
PLEASE HELP, WILL MARK BRAINLIEST
write an equation of the line that passes through (-2,0) and is perpendicular to the line y = - 1/3x + 3.
Answer:
(y-0)=-3(x-2)
Step-by-step explanation:
im not sure if this os correct but i tried
HELP ASAP PLEASE! I need to write an equation of the line in slope-intercept form.
Answer:
y=2x-2
Step-by-step explanation:
The slope-intercept form is known as y=mx+c
y= the y coordinate
m= the gradient/slope
x= the x coordinate
c= y intercept
The y intercept is when the line crosses the y axis. The graph shows the y intercept is (0,-2). This means our value of c is -2.
Now we must find the value of m. The value of m is the slope of the graph. I usually figure out the slope by doing the change in y / change in x (by counting along how many squares). The change in y is two squares up and the change in x is one square along.
Therefore, the gradient would be 2/1. This equals 2 (so m=2).
Now, we can easily substitute these values into the equation given earlier. Therefore, the equation would be y=2x-2.
What type of triangle (right, obtuse, acute) do the angles 5,5,5 form?
Answer:
acute
Step-by-step explanation:
5 is lower than a 90* angle
if this is wrong I'm very sorry.
Find f^-1(x) where
f(x) = 3x + 2 / x
Answer:
denoted interchange solve
Step-by-step explanation:
y= (2-x)/3 Let f(x) be denoted by y, thus y= -3x+2 Now interchange x and y, it becomes x= -3y+2 Solve for y, y= (2-x)/3 This is f^(-1) x
a. True/False
To complete the square on the left side of the equation x2 - 6x = 9,
you must subtract the number 9 from both sides.
Answer:
True
Step-by-step explanation:
[tex]x^{2} -6x=9[/tex]
subtract [tex]9[/tex] from both sides
[tex]x^{2} -6x-9[/tex]
plz mark me brainliest. ;)
The binomial (x+2) is a factor of ?
1). 2x^{2} -5+3
2). x^{2} +5x+18
3). x^{3} +5x^{2} + 18
4). x^{3} +5x+18
Answer:
4). [tex] x^{3} +5x+18 [/tex]
Step-by-step explanation:
The binomial (x+2) is a factor of [tex] x^{3} +5x+18. [/tex]
Since, (x + 2) is a factor.
So, x = - 2 is a root
Plug x = - 2 in [tex] x^{3} +5x+18 [/tex]
We find:
[tex] x^{3} +5x+18 [/tex]
[tex] =(-2)^{3} +5(-2)+18 [/tex]
[tex] =-8 - 10+18 [/tex]
[tex] = - 18+18 [/tex]
[tex] = 0 [/tex]
Since, at x = - 2 the value of the expression [tex] x^{3} +5x+18 [/tex] becomes zero.
Therefore, (x + 2) is a factor of [tex] x^{3} +5x+18 [/tex]
Please answer ASAP!!
6.7.30
What is the perimeter of parallelogram WXYZ? It’s not 25 I’ve tried that.