6 erasers cost $6.60.
Which equation would help determine the cost of 3
erasers?
Answers
Answer:
answer is a
Step-by-step explanation:
u just look at 6 and 6.60 thats 1 and 10 every eraser but for 3 its 1.30
Related Questions
Please help with this, Thank You.
Answers
Answer:
[tex]x = 12[/tex]
Step-by-step explanation:
[tex]3x + 9 = 5x - 15[/tex]
[tex]2x = 24[/tex]
[tex]x = 12[/tex]
D is Midpoint of CE
C = (-5,?) D = (3,10) E = (?,8)
Answers
C = (-5,12) E = (11,8)
Step-by-step explanation:
The difference between -5 and 3 is 8, so add 8 to the midpoint (3), and it's 11
The difference between 10 and 8 is 2, so add 2 to the midpoint (10), and it's 12
simplify √(x^2-10x+25) if -5≤x<5
Answers
[tex]\\ \rm\Rrightarrow \sqrt{x²-10x+25}[/tex]
[tex]\\ \rm\Rrightarrow \sqrt{x²-5x-5x+25}[/tex]
[tex]\\ \rm\Rrightarrow \sqrt{x(x-5)-5(x-5)}[/tex]
[tex]\\ \rm\Rrightarrow \sqrt{(x-5)(x-5)}[/tex]
[tex]\\ \rm\Rrightarrow \sqrt{(x-5)^2}[/tex]
[tex]\\ \rm\Rrightarrow\pm (x-5)[/tex]
Solution set(for x-5)
{-10,-9,-8,-7,-4,-3,-2,-1,0}for 5-x
{0,-1,-2,-3,-4,-5,-6,-7,-8,-9,-10}Answer:
First, simplify the expression under the square root sign by factoring:
[tex]\implies x^2-10x+25[/tex]
[tex]\implies x^2-5x-5x+25[/tex]
[tex]\implies x(x-5)-5(x-5)[/tex]
[tex]\implies (x-5)(x-5)[/tex]
[tex]\implies (x-5)^2[/tex]
Therefore:
[tex]\implies \sqrt{x^2-10x+25}=\sqrt{(x-5)^2}[/tex]
[tex]\implies \sqrt{x^2-10x+25}=\pm(x-5)[/tex]
[tex]\implies \sqrt{x^2-10x+25}=|x-5|[/tex]
As the domain is -5 ≤ x < 5, then:
[tex]\implies y=-x+5[/tex]
and the range is 0 < y ≤ 10
Estimate 17.26+4.556 by first rounding each number to the nearest tenth. I need help
Answers
Answer:
21.9
Step-by-step explanation:
When rounding to the nearest tenth, we are rounding to 1 decimal place.
If the number in the hundredth place is 5 or more, we round up.
If the number in the hundredth place is less than 5, we round down.
17.26 rounded to the nearest tenth is 17.3
as 6 is in the hundredth place, so we round 2 tenths up to 3 tenths.
4.556 rounded to the nearest tenth is 4.6
as 5 is in the hundredth place, so we round 5 tents up to 6 tenths.
Therefore, 17.3 + 4.6 = 21.9
Which expression is equivalent to startfraction (2 m n) superscript 4 baseline over 6 m superscript negative 3 baseline n superscript negative 2 baseline endfraction? assume m not-equals 0, n not-equals 0.
Answers
The equivalent expression of [tex]\frac{(2mn)^4}{6m^{-3}n^{-2}}[/tex] is [tex]\frac{(2mn)^4}{6m^{-3}n^{-2}}[/tex]
How to determine the equivalent expression?The expression is given as:
[tex]\frac{(2mn)^4}{6m^{-3}n^{-2}}[/tex]
Evaluate the expression on the numerator
[tex]\frac{16m^4n^4}{6m^{-3}n^{-2}}[/tex]
Divide 16 by 6
[tex]\frac{8m^4n^4}{3m^{-3}n^{-2}}[/tex]
Apply the law of indices
[tex]\frac{8m^7n^6}{3}[/tex]
Hence, the equivalent expression of [tex]\frac{(2mn)^4}{6m^{-3}n^{-2}}[/tex] is [tex]\frac{(2mn)^4}{6m^{-3}n^{-2}}[/tex]
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How many 4-digit numbers are neither multiples of 2 nor multiples of 5?
Answers
Multiples of 2 end in 0, 2, 4, 6, and 8. There are 9*10*10*5 = 4500 four-digit multiples of 2.
Multiples of 5 end in 0 or 5. There are 9*10*10*2 = 1800 four-digit multiples of 5.
There is redundancy between the two sets of numbers, namely those that end in 0, which are both multiples of 2 and 5. There are 9*10*10*1 = 900 four-digit multiples of both 2 and 5.
Then there are 4500 + 1800 - 900 = 5400 total four-digit numbers that are either multiples of 2 or 5, which means the remaining 4600 numbers are neither multiples of 2 nor 5.
Answer:
3,600
Explanation:
There's nine thousand numbers here, 4,500 of which are even, you will need to subtract mutiples of five from this number, making it even smaller.
subtract the non-even five's (exactly half of the 1800 hundred fives that fit in our little original number, (900!) ) 4,500-900= 3,600. Which should be your answer. :D
Step-by-step explanation:
The table below represents a breakdown of food costs for Robert, a traveling
salesman. How much did he spend in total for food on Friday?
A. $45.94
B. $40.80
C. $42.56
D. $41.23
Answers
The amount that he spend in total for food on Friday will be $ 40.80. Then the correct option is C.
What is the addition of the numbers?The sum is also know as addition.
The table below represents a breakdown of food costs for Robert, a traveling salesman.
The amount that he spend in total for food on Friday will be
→ 13.30 + 10.76 + 16.74
→ $ 40.80
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Answer:
44.98
Step-by-step explanation:
look at the image below lol
Answers
Answer:
1.7.
Step-by-step explanation:
2x^3 + 9x^2 - 2x + 8 = 40
Substituting values for x in the range 1 to 2:
when x = (1.1):
f(1.1) = 2(1.1)^3 + 9(1.1)^2 - 2(1.1) + 8 = 19.32.
x = 1.3:
f(1.3) = 25.004
F(1.5) = 32
F(1.6) = 36.032
F(1.7) = 40.436 which is just greater than 40.
So the root is between 1.6 and 1.7.
f(1.65) = 38.19
Therefore the root is > 1.65 and < 1.7
and to 1 DP it is 1.7.
juan went to the sporting goods store. he spent $14 on a batting glove. he spent half of the remaining money on a football. later, he spent $2 on a sports drink. if he had $10 left, how much money did juan take to the sporting goods store? how much did he spend on the football?
Answers
Answer: 38 dollars
Step-by-step explanation:
work in reverse (include dollar sign in your answer, I can't get it on my keyboard)10 + 2 = 1212 x 2 = 2424 + 14= 38A 30cm ruler sometimes measures inches on the other side.
How many feet are approximately same as 30cm ?
1inch = 2.5cm
1foot = 12inches
Answers
1inch = 2.5cm
∆ 30cm
1inch x 30cm \2.5cm =?5cm =2inch
so 30cm=12inchOf the trains that recently pulled into Westford Station, 16 were full and 4 had room for more passengers. What is the experimental probability that the next train to pull in will be full?
Answers
The experimental probability that the next train to pull in will be full is [tex]\rm \frac{4}{5}[/tex]. Probability is the ratio of the favorable event to the total number of events.
What is probability?Probability means possibility. It deals with the occurrence of a random event. The value of probability can only be from 0 to 1. Its basic meaning is something is likely to happen.
The experimental probability that the next train to pull in will be full is found as;
[tex]\rm P= \frac{Favourable}{Total \ outcomes } \\\\\ P(full)= \frac{16}{16+4} \\\\\ P(full)=\frac{16}{20} \\\\ P(full)= \frac{4}{5}[/tex]
Hence, the experimental probability that the next train to pull in will be full is [tex]\rm \frac{4}{5}[/tex].
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The function is defined over the interval [2, 5]. if the interval is divided into equal parts, what is the value of the function at the right endpoint of the th rectangle?
Answers
The value of the function at the right endpoint of the rectangle is 5 +6k/n.
What is the endpoint about?In the question above;
Th width of the interval is said to be (5 -2) = 3.
So, the width of one of n parts of it = 3/n
To solve for the differences that exist between the left end point of the interval and the value of x at the right end of the k-th rectangle, one can say that:
k·(3/n) = 3k/n
Note that the value of x at shows the point of difference added to the interval's left end and thus it will be: 2 + 3k/n
Therefore, the value of the function for the value of x will be:
f(2 +3k/n) = 2(2 +3k/n) +1 = (4 +6k/n) +1
= 5 +6k/n
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How would I work this one out?
Answers
Answer:
See below
Step-by-step explanation:
each term is the sum of the two before it
2 3 5 8 13 21 34
Please help me:( The question is the line y=mx+c passes through the point (3,4) and is perpendicular to the line y+2x=4. Find m and c.
Answers
Answer:
m = [tex]\frac{1}{2}[/tex] , c = [tex]\frac{5}{2}[/tex]
Step-by-step explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
given
y + 2x = 4 ( subtract 2x from both sides )
y = - 2x + 4 ← in slope- intercept form
with slope m = - 2
given a line with slope m then the slope of a line perpendicular to it is
[tex]m_{perpendicular}[/tex] = - [tex]\frac{1}{m}[/tex] = - [tex]\frac{1}{-2}[/tex] = [tex]\frac{1}{2}[/tex] , then
y = [tex]\frac{1}{2}[/tex] x + c ← is the partial equation
to find c substitute (3, 4 ) into the partial equation
4 = [tex]\frac{3}{2}[/tex] + c ⇒ c = 4 - [tex]\frac{3}{2}[/tex] = [tex]\frac{5}{2}[/tex]
y = [tex]\frac{1}{2}[/tex] x + [tex]\frac{5}{2}[/tex] ← equation of line
with m = [tex]\frac{1}{2}[/tex] and c = [tex]\frac{5}{2}[/tex]
Cecilia bought 24 bottles of juice that each contained 12 fluid ounces of juice. How many pints of juice did she buy?
Answers
Answer:
it 288
Step-by-step explanation:
if u multiply 24x12 it gives you 288 hope this help you
Sydney walked 3/4 mile on Monday
5/8 mile on Tuesday, and 1/2 mile on
Wednesday. How far did she walk
Monday through Wednesday?
A 1 1/2 mi
B 1 3/4 mi
C 1 7/8
D 2 1/4
Answers
3/4= 6/8
5/8= 5/8
1/2 = 4/8
6+5+4 = 15
15/8= 1 7/8
So the answer is C
work out the height of this triangle with a base,B=2.1mm and an area of, A=39.06mm squared
Answers
Answer:
37.2mm
Step-by-step explanation:
A = ½bh
h = (2A)/b
h = (2(39.06))/2.1
h = 78.12/2.1
h = 37.2mm
(Screenshot included need answer quick assignment due today) Select the graph that matches the equation y = 8
5
10
x + 9.
Answers
Answer:
C
Step-by-step explanation:
Since the y-intercept is 9 look at the graphs and see which one has the point (0,9) and its gonna be the answer
Help me Please!!!!! I need it!!!!
Answers
Answer:
-3125
Hope this helps!!
Explanation:
-2x + 4y = 12
5x - 2y = 10
To answer please type altogether with no spaces. For example if your answer is negative three positive four, type (-3,4)
Answers
Answer:
(4,5)
Step-by-step explanation:
-2x + 4y = 12
5x - 2y = 10
make them both set to y
4y = 2x + 12 -> y = 1/2x + 3
2y = 5x - 10 -> y = 5/2x - 5
since they're both equal to y, they are equal to each other
1/2x + 3 = 5/2x - 5
2x = 8
x = 4
plug it back in to get y
y = 1/2 (4) + 3
y = 5
Help pls
Two digits of the 6-digit number X = 345 * 8* are missing. Fill in the missing digits
so that the number obtained is the smallest possible number that is divisible by 45.
Find X.
Answers
The smallest possible number that is divisible by 45 when the blanked place of the number is filled is 345285.
What is the divisible rule of 9 and 5?The divisible rule of 9 and 5 are:
Divisible rule of 9- When the addition of all number is divisible by 9, then that number also divisible by 9.Divisible rule of 5- When a number has a digit 0 or 5 in the last of it, then that number also divisible by 5.Two digits of the 6-digit number are missing.
[tex]X = 345 * 8*[/tex]
The smallest possible number from this is divisible by 45. The factors of 45 are 9 and 5.
[tex]45=9\times5[/tex]
Thus, the 6-digit number which is divisible by 45, must be divisible by 9 and 5.
To be divisible with 5, the number has 0 or 5 in last. So the numbers can be,
[tex]X = 345 * 85\\X=345 * 80[/tex]
For first number, when the blank is filled with number 2 to make sum 9 and for second the blank number should be 7. Thus, the numbers,
[tex]X = 345 285\\X=3457 80[/tex]
Thus, the smallest possible number that is divisible by 45 when the blanked place of the number is filled is 345285.
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What is the product of 0 and any number?
Answers
Answer:
It will always be 0 because the rule is anything times 0 is 0
Answer:
0
Step-by-step explanation:
Hey there!
The product of any number and 0 is zero
To explain why this is, just think of it visually
So lets say we are visually explaining 7 x 3
Here is a visual explanation
There are 7 strawberries
You take 7 more strawberries
You take 7 more strawberries again
This means that you are taking 7 strawberries 3 times thereby forming the equation, 7 x 3
Now lets say a numeber [tex]x[/tex] times zero is equal to what
Well we can visualize this again
There are [tex]x[/tex] strawberries in a group
You are taking zero of those groups
Meaning there are no groups
So if there are no groups
There are no strawberries
Meaning [tex]x[/tex] times zero is zero
Since [tex]x[/tex] is any number, the statement, the product of 0 and any number is 0 is true
This is why the product of 0 and any number is 0
Is y=x(x+3) a linear function?
Answers
Step-by-step explanation:
No. If you distribute the 'x', you get:
[tex]y = {x}^{2} + 3x[/tex]
The function is quadratic due to the exponetial term of x^2
Zendaya has $700 to spend at a bicycle store for some new gear and biking outfits. assume all prices listed include tax. she buys a new bicycle for $242.33. she buys 3 bicycle reflectors for $7.17 each and a pair of bike gloves for $33.68. she plans to spend some or all of the money she has left to buy new biking outfits for $77.40 each. write and solve an inequality which can be used to determine xx, the number of outfits zendaya can purchase while staying within her budget.
Answers
Answer:
she could buy 5 outfits
Step-by-step explanation:
you multiply 7.17 by 3 = 21.51
700 - 21.51 = 678.49
678.49 - 242.33 = 436.16
436.16 - 33.68 = 402.48
402.48 divided by 77.40 = 5
The average age of 3 girls is 17years 4month. the average age of 2 of them is 17years 3month. how old is the third girl
Answers
Answer:
1 month oldStep-by-step explanation:
17.4-17.3=.1
that would be 1 moth
if jane has 3 pars and take 3 pars how many pars would she had left
Answers
Answer:
0 pars
Step-by-step explanation:
3-3=0
...........what’s -12/2 simplified
Answers
Answer:
= -6
Step-by-step explanation:
-12/2
= -6
Step by Step explanation= -12/2= -6
If f(x) => x2 +6, what is the value of f(8)?
Answers
Answer:22
Step-by-step explanation: since f(8) so x=8
substitiuting x in 2x+6
f(8)= 2x8+6=22
so f(8)=22
Hope this helps! :)
0.7x-3.2=1.7
WHAT IS THIS
Answers
Answer:
1.7
Step-by-step explanation: Combine multiplied terms into a single fraction
Answer: Heyaa! ~
Your Answer for X = 7
Step-by-step explanation:
How to solve:
Combine multiplied terms into a single fractionFind common denominatorCombine fractions with common denominatorHopefully this helps you! ^
Select all ordered pairs that correspond to input-output pairs for the function y = 3x - 2.
(-2, 0)
(-1, -5)
(0, -2)
(2, 3)
(-3, -11)
Answers
Answer:
(-1, -5)
(0, -2)
(-3, -11)
Step-by-step explanation:
y = 3x - 2.
→ 3×(-2)-2=-8 ≠0 ⇒(-2, 0) doesn’t correspond to input-output pairs for the function
→ 3×(-1)-2=-5 ⇒(-1, -5) corresponds to input-output pairs for the function
→ 3×(0)-2=-2 ⇒(0, -2) corresponds to input-output pairs for the function
→ 3×(2)-2=4≠3 ⇒(2, 3) doesn’t correspond to input-output pairs for the function
→ 3×(-3)-2=-11 ⇒(-3, -11) corresponds to input-output pairs for the function