Answer:
Stefanie bought 10 erasers.
Step-by-step explanation:
Stefanie bought a package of pencils for $1.75 and some erasers that cost $0.25 each. She paid a total of $4.25 for these items.
Beind "x" be the number of erasers bought, you can express Stepanie's purchases by the equation:
1.75 + 0.25*x = 4.25
Solving:
0.25*x = 4.25 - 1.75
0.25*x = 2.5
x= 2.5÷ 0.25
x=10
Stefanie bought 10 erasers.
Answer:
10 erasers
Step-by-step explanation:
Write and solve a proportion to answer the question.
75% of 124 is what number a
?
Write and solve a proportion to answer the question.
72 is what percent of 45?
Which value is MEAN of the data set?
A)
480
B)
485
500
D)
The MEAN cannot be determined from the available information.
Answer:
500
Step-by-step explanation:
I believe the answer is D) The mean cannot be determined from the available information.
The mean in math means the sum of all the numbers divided by how many numbers there are. There is no information about how many numbers there are nor any information of which numbers exist and which numbers don't.
The data set only tells us the first number, last number, and median-- things a box-and-whisker plot would tell us; perhaps a different way of representing data would work better to help us find the median like a dot plot or a bar graph.
If this is incorrect, please, don't refrain to tell me. Thank you.
Mary is buying a case of water. She spends $7.99 for a case of 24 bottles. What is the unit rate? (Cost for 1 bottle) *
Answer:
so I'm not 100% sure but in these types of questions you are supposed to divide
so you have a pack of 24 bottles for 7.99
so you would do 7.99÷24 = 0.33
then to check it you can multiply
0.33× 24 bottles and it gives you 7.93 which is super close to 7.99 anyway I hope this helps ...
Can you help me with this one to
Answer:
3 and 5 but i dont know what number goes in what picture so just try then try the other way round if its wrong
Step-by-step explanation:
Answer:
Purple Diamond = 2 Green Moon = 7.5 Pink Trapezium = 30
Step-by-step explanation:
T = Pink Trapezium
D = Purple Diamond
M = Green Moon
Line 1 = T = 30 x 1 = 30
Line 2 = (D x D) x (M) = (2x2) x (7.5) = 4 x 7.5 = 30
The key is the weight of the line multiples to 30
Just like graphs do with x/y
If x is horizontal then y is vertical
= x/y we get the gradient which is the same as division or dividing 30/30 = 1 being the base weight amount
and same as 30/7.5 = 4 and simplifying 4 to (2 x 2)that means an easier way to see the number of (2x2) being the base weight = 1 x 2 then 1 x 2 then as we have found 4 its simplification we can divide it into 30 to show 30/4 = 7.5 for the Moon or for (M) above.
The 4 number is simplification and (+ 2 )(+ 2) is its factorization before it turns to 30 to show 30 = (2 x 2 x 7.5) or 2^2 x 7.5 = 30. Etc. Etc.
Which expression is equivalent to – 2( –8v – 4)+6v?
Answer:
-2(-11v-4)
Step-by-step explanation:
The function table below represents the linear function y = 4x – 3. Which answer represents the outputs of the function table
Answer:
Here we can not see the options, so i will answer in a general way.
When we have a function y = f(x), we define:
x as the input
y as the output.
so f(x) is some kind of "machine", in wich we put an input x, and the "machine" does something and returns an output y.
In, this case, we have:
y = f(x) = 4*x - 3
then if we give this function different inputs, we will get different ouputs.
for example, if we use the input x = 0, then the output is:
y = f(0) = 4*0 - 3 = -3
Then if we made a table for inputs and outputs, we will have the data:
[tex]\left[\begin{array}{ccc}inp&out\\x&y\\0&-3\end{array}\right][/tex]
We can rewrite this table in a general way as:
[tex]\left[\begin{array}{ccc}inp&out\\x&4*x - 3\end{array}\right][/tex]
This means that for every input x, the output is always 4*x - 3.
To complete this type of tables, we usually use different values of x, for example here I will use some different ones:
y = f(3) = 4*3 - 3 = 12 - 3 = 9
y = f(10) = 4*10 - 3 = 40 - 3 = 37
y = f(-1) = 4*-1 - 3 = -4 - 3 = -7
Then we will have a table like:
[tex]\left[\begin{array}{ccc}inp&out\\3&9\\10&37\\-1&-7\end{array}\right][/tex]
Concluding, the thing that will always represent the output of our function is: 4*x - 3.
Rounded to the nearest hundredth, what is the positive solution to the quadratic equation 0=2x^2+3x-8? 1.99 2.00
Answer:
1.39
Step-by-step explanation:
Given the quadratic equation :
2x^2+3x-8 = 0
We could apply the quadratic equation formula :
a = 2 ; b = 3, c = - 8
The formula is stated as :
-b±sqrt(b² - 4ac)/2a
To save computation tune, we could use a calculator :
The roots are : - 2.886 ; 1.386
The positive solution rounded to the nearest hundredth is : 1.39
Write the series using summation notation.
-2 +4-8 + 16 - 32
Answer:
Σ (-2)^n
n=1
Hope this helps
Please help asap due in 30 mins please be proper.
Answer:
18sqrt5 or 40.249
Step-by-step explanation:
by pythagorean theorem
Hypotenous^2=altitude^2+base^2
c^2=a^2+b^2
c^2=(18)^2+(36)^2
c^2=324+1296
c^2=1620
taking sqrt root
c=18sqrt5=40.249
Answer:
in right angled triangle BCD
by using Pythagoras law
P²+B²=H²
A²+B²=C²
36²+18²=x²
x=√1620=18√5m
x=18√5 m is your answer
Horace measured a circular lid and found d, the diameter, was 8 inches and C, the circumference, was 25 inches. Which expression represents an approximate value for p?
Horace measured a circular lid and found d, the diameter, was 8 inches and C, the circumference, was 25 inches. Which expression represents an approximate value for pi?
Answer:
pi = 3.125
Step-by-step explanation:
We are given;
Diameter; d = 8 inches
Circumference; C = 25 inches
Formula for circumference of a circle is;
C = πd
We are trying to find the value for pi(π)
Thus; π = C/d
π = 25/8
π = 3.125
The sum of 3 times a number and 6 equals 7.
Answer:
3n + 6 = 7
Hope this helps!
Answer:
3 * n + 6=7
3n+6=7
Step-by-step explanation:
uh khakis
need help ASAP !!!
[tex] \sqrt{6854 \times 6854} [/tex]
Answer:
√{6854×6854}=√6854²=±6854 is your answer
Answer:
[tex]±6854 [/tex]
Step-by-step explanation:
[tex] \sqrt{6854 \times 6854} [/tex]
[tex] \sqrt{ {6854}^{2} } [/tex]
[tex]±6854 .[/tex]
b Two quadrilaterals both have angles 55°, 65°, 95º and 145º
Felix says, 'The two quadrilaterals are similar.
True or false? Explain why.
Answer:
I say true.
Step-by-step explanation:
cuz both of the quadrilaterals have the same angles and all angles equal 360 °
The shaded portion of the bar model in Part A shows 38. What percent is equivalent to 38? Enter the correct answer in the box.
Question:
The shaded portion of the bar model in Part A shows 3/8. What percent is equivalent to 3/8? Enter the correct answer in the box.
Answer:
The equivalent is 37.5%
Step-by-step explanation:
Given
[tex]\frac{3}{8}[/tex]
Required
The equivalent
The model is not shown, but the question can still be solved.
We have:
[tex]\frac{3}{8}[/tex]
Multiply by 100%
[tex]\frac{3}{8} = \frac{3}{8} * 100\%[/tex]
[tex]\frac{3}{8} = 0.375 * 100\%[/tex]
[tex]\frac{3}{8} = 37.5\%[/tex]
1.
The width of a rectangle is 19 centimeters less than double the length.
Let v be length of the rectangle. Write a variable expression for the width.
Answer:
width = 2v - 19
Step-by-step explanation:
Can someone please help?
Answer:
JUST USE THE CALCULATOR DUHHH!!!
I need help with finding x. Can someone help me please?
Answer:
There isn't the picture :c
Find the percent increase. Round to the nearest percent. From 82 books to 144 books The percent increase is
Answer:
Step-by-step explanation:
56%
Cam, Yusef, and Spencer have resolved to drink more water each day. The recommended amount of water per day is 64 ounces.
a. Cam has 10% of the recommended amount of water left to drink before bed. How many ounces of water does she need to drink to reach her goal? Show your work and/or explain your reasoning.
9514 1404 393
Answer:
6.4 ounces
Step-by-step explanation:
10% of 64 ounces is ...
0.10 × 64 = 6.4 . . . . ounces
Cam needs to drink 6.4 ounces to reach the recommended amount.
Write down in terms of n, an expression for the nth term
of the following sequences:
a) 4 1 -2 -5 -8
b) -7 -12 -17 -22 -27
Step-by-step explanation:
This the answer in the photo
Write the equation of the line in fully simplifoed slope intercept form
Answer:
y = -⁵/₃x + 8Step-by-step explanation:
The equation of the line in slope-intercept form: y = mx + b, where m is a slope and b is y-intercept
Slope of line that passes through two given points: [tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]
(0, 8) ⇒ x₁ = 0, y₁ = 8
(3, 3) ⇒ x₂ = 3, y₂ = 3
[tex]\bold{m=\dfrac{3-8}{3-0}=\dfrac{-5}3=-\dfrac53}[/tex]
b = 8
Therefore the equation: y = -⁵/₃x + 8
Monica worked 3.5 hours and is paid $10 per hour. How much did she make in 3.5 hours?
Answer:
She would make $35.
Step-by-step explanation:
If you do 10 x 3.5, you will get the answer of $35.
Answer:
$30
Step-by-step explanation:
She would be getting paid by the HOUR, and she has worked 3.5 hours. If she gets paid every HOUR, that means that she would be paid three times when working 3.5 hours. The answer would be $30.
The person who wrote the question might want $35 dollars as the answer, but logically the answer should be $30.
Andrew cut 24 feet of chain into pieces that were each 1/3ft long. How many of these pieces did Andrew have after cutting the chain?
Answer:
72
Step-by-step explanation:
1/3 ft is 4 inches
24 feet is 288 inches
take 288 and divide it by 4
you get 72, which is the number of pieces of chain Andrew has
What is the simplified form of the following expression?
(N^5)(N^2)
1. N^25
2. N^10
3. N^7
4. N^3
Answer:
3
Step-by-step explanation:
same base multiplying, you add exponents
Answer:
3. N^7
Step-by-step explanation:
When we multiply N^5 and N^2 we keep the base of N and add 5 and 2. Giving us N^7
. The coordinates of a rectangle are (4,2), (4,-3), (-2, -3) and (-2, 2). In square units, what is the area of this rectangle? units
Answer:
24 units^2. :)
what is 1/10 (3n+50)=35?
Answer:
100
Step-by-step explanation:
1/10(3n+50)=35
3n+50=35*10
3n+50=350
3n=350-50
3n=300
n=300/3
n=100
Is negative 40 greater than 12
Answer:
No, 12 is greater than -40
Step-by-step explanation:
Answer: I think your question is: Is negative forty greater than positive 12. It is not greater. Even if it was negative 40 and negative 12 it still would not be greater. Hope this helps :)
Step-by-step explanation:
The bill for car repairs is $425 for parts and labor. The cost of parts is $226 and labor is $36.00 per hour. If h represents the number of hours of labor, which equation can you use to find the number of hours of labor?
Group of answer choices
226 = 425 – 36h
226(h + 226) = 425
36 + 226h = 425
36h + 226 = 425
Answer:
the third one
Step-by-step explanation:
36+ 226h=425, I hope this helps:)
pease help me i really need this
Answer:
2:140
1:70
Step-by-step explanation:
:)
A social networking site currently has 28,000 active members per month,
but that figure is dropping by 5% with every month that passes. How
many active members can the site expect to have in 2 months?