3 x 1/10 is 0.3 because it represents one tenth of 3, while 3 x 10 is 30 as it increases the value of 3 tenfold. Powers of ten and negative exponents demonstrate that each step in exponent changes the scale of the number by a factor of ten.
The reason why 3 x 1/10 is less than 3 x 10 is due to the values being multiplied by 3. When multiplying 3 by 1/10, you are essentially taking one tenth of 3, which gives you 0.3. However, when multiplying 3 by 10, you are increasing 3 tenfold, which results in 30.
To understand the scale, considering that each positive power of 10 is ten times bigger than the previous one, for instance from 3.2 to 3.2 x 10, and each negative power is ten times smaller, like from 3.2 to 3.2 x 1/10 . Powers of ten and their associated exponents allow us to easily compare and calculate with vastly different magnitudes, and this concept underlies the multiplication comparisons posed in the initial question.
PLEASE HELP I WILL GIVE BRAINLIEST PLEASEEEE HELP ME
Answer:
perpendicular bisector
15 − b × d ÷ c
for b = 1, c = 6, and d = 18.
Answer:
This is simple. And, you best not be cheating either.
15 - 1 x 18 / 6
1x18 = 18
18/6 is 3.
15 - 3 = 12
12 is the answer.
Step-by-step explanation:
What is the GCF of 12 and 7
Answer:
The GCF of 7 and 12 is 1.
Answer:
Step-by-step explanation:
GCF of 12 and 7 = 1
If there is no common factor then , GCF will be 1
A new club sent out 164 coupons to boost sales for next year's memberships. They provided 3 times as many to potential members than to existing members. How many coupons did they send to existing members?
Answer:
123 coupons.
Step-by-step explanation:
Divide the total of 164 coupons by 4. 164/4 = 41
Find the amount of coupons sent by multiplying 41 by 3. 41 x 3 = 123
The answer is 123 coupons. (123/164 = 3/4)
ASAP!What are the vertical asymptotes of the function f(x) = the quantity of 3x plus 9, all over x squared plus 4x minus 12?
A) x = −6 and x = −2
B) x = −6 and x = 2
C) x = 1 and x = −2
D) x = 1 and x = 2
Answer:
C
Step-by-step explanation:
Answer:
B) x = -6 and x = 2
Step-by-step explanation:
[tex]\frac{3x+9}{x^{2}+4x-12}[/tex]
can be rewritten as
[tex]\frac{3x+9}{(x+6)(x-2)}[/tex]
because
-2 · 6 = -12
-2 + 6 = -4
so thats why the denominator is (x+6)(x-2)
A vertical asymptote is where the denominator equals 0, so,
-6 + 6 = 0
2 + -2 = 0
So the Answer is:
B) x = -6 and x = 2
Ben’s driving test had 40 questions and he correctly answered 12 more than he missed. How many questions did he miss?
Answer:
He missed 14 questions
Step-by-step explanation:
Total = Right + Miss ⇒ t = r + m
Right = Miss + 12 ⇒ r = m + 12
t = 40
Since t = r + m and r = m + 12 then:
t = m + 12 + m
t = 2m + 12
40 = 2m + 12
28 = 2m
m = 14
Final answer:
Ben missed 14 questions.
Explanation:
To find the number of questions Ben missed, we can create an equation using the information given.
Let x represent the number of questions Ben missed.
We know that Ben correctly answered 12 more than he missed, so the number of questions he answered correctly can be represented as
x + 12.
Since the test had 40 questions, we can set up the equation:
x + (x + 12) = 40.
Simplifying this equation, we get
2x + 12 = 40.
Solving for x, we subtract 12 from both sides to get
2x = 28,
and then divide both sides by 2 to get
x = 14.
Therefore, Ben missed 14 questions.
Find k, the constant of proportionality, for the data in this table. Then write an equation for the relationship.
They equation needs to be in the form y=kx
K=
Equation:
Answer:
see explanation
Step-by-step explanation:
The equation of proportionality is
y = kx ← k is the constant of proportionality
k = y ÷ x, thus
k = 160 ÷ 25 = 320 ÷ 50 = 480 ÷ 75 = 640 ÷ 100 = 6.4
and
y = 6.4x ← equation of proportionality
How do you find a variable to 4-2(v+9)=26
Answer:
V=20
Step-by-step explanation:
Simplify both sides of the equation.
4−2(v+9)=26
4+(−2)(v)+(−2)(9)=26(Distribute)
4+−2v+−18=26
(−2v)+(4+−18)=26(Combine Like Terms)
−2v+−14=26
−2v−14=26
Step 2: Add 14 to both sides.
−2v−14+14=26+14
−2v=40
Step 3: Divide both sides by -2.
−2v
−2
=
40
−2
v=−20
Please Help! Given the right triangles ABC and ABD, what is the length of segment BC, in units?
Answer:
20 units
Step-by-step explanation:
Consider right triangle ABD. In this triangle,
[tex]BD=37\ un.\\ \\AD=19+16=35\ un.[/tex]
By the Pythagorean theorem,
[tex]BD^2=AD^2+AB^2\\ \\37^2=35^2+AB^2\\ \\AB^2=37^2-35^2=(37-35)(37+35)=2\cdot 72=144\\ \\AB=12\ un.[/tex]
Consider right triangle ABC. In this triangle,
[tex]AC=16\ un.\\ \\AB=12\ un.[/tex]
By the Pythagorean theorem,
[tex]BC^2=AB^2+AC^2\\ \\BC^2=16^2+12^2\\ \\BC^2=256+144=400\\ \\BC=20\ un.[/tex]
A student plots a system of equations on graph paper.
Answer:
AStep-by-step explanation:
Please help with math, The closest I got was 11/4 for the answer but its obviously not right, please get back as soon as you can!
Answer:
D
Step-by-step explanation:
1 1/4 + 3/4 + 2/4 + 1/4
1+1+ 3/4
2 3/4
Tell whether the sequence is arithmetic. If it is, what is the common difference? -19,-11,-3,5,...
Every next number is incremented by 8 from the previous number hence the sequence is arithmetic and the common difference is 8.
Hope this helps.
Answer:
The given sequence is arithmetic and common difference is 8.
Step-by-step explanation:
Given that :
- 19, - 11, - 3, 5......
Here, a = - 19 ; a is the first term of the series.
Now, For common difference-
d = [tex]t_{2} - t_{1}[/tex] = [tex]t_{3} - t_{2}[/tex] = [tex]t_{4} - t_{3}[/tex]
Let [tex]t_{1} = - 19, t_{2} = - 11[/tex]
d = - 11 - (-19)
= -11 + 19
= 8
Let [tex]t_{3} = - 3, t_{2} = - 11[/tex]
d = - 3 -(-11)
= - 3 + 11
= 8
Let [tex]t_{4} = 5, t_{3} = - 3[/tex]
d = 5 - (-3)
= 8
In each condition common difference d is same therefore the given sequence is arithmetic and common difference d = 8.
Determine the sign of cos pi divided by seven
The sign of cos pi divided by seven is positive
Solution:
Given that we have to determine the sign of cos pi divided by seven
Let us first understand the signs of sine, cosine and tangent by quadrants
In the first quadrant, the values for sin, cos and tan are positive.
In the second quadrant, the values for sin are positive only.
In the third quadrant, the values for tan are positive only.
In the fourth quadrant, the values for cos are positive only.
Determine the sign of cos pi divided by seven
cos pi divided by seven ⇒ [tex]cos \frac{\pi}{7}[/tex]
The angle [tex]\cos \frac{\pi}{7}[/tex] lies in quadrant 1, Where angles are zero (0) to [tex]\frac{\pi}{2}[/tex]
In first quadrant, all trignometric functions are positive
so, [tex]\cos \frac{\pi}{7}[/tex] has positive sign.
Can someone help me with this T-T
Answer:
17 79 017.3.727m92Step-by-step explanation:
My frist store wen you I was a little kid and the most main street from this is
Answer:
Answers are in picture, if you want an explanation for anything, just ask.
Step-by-step explanation:
help.....meh...please.
Answer:
.875 = 875/1,000 = 7/8
The correct answer is D.
What are the values of the regrouped amounts in the multiplication below?
435
x17
3,045
+ 4,350
7,395
A. 2 and 3
B. 20 and 3
C. 200 and 30
D. 2000 and 300
In the multiplication operation of numbers 435 and 173, the regrouped or carried over amounts are 10 (in units place calculation) and 30 (in tens place calculation). Therefore, the answer corresponds to option B: 20 and 3.
In multiplicaton problems, we often need to 'regroup' or carry values. In the multiplication of 435 and 173, regrouping is necessary. Here's how it's done:
We start by multiplying 5 from 435 with 3 from 173, to get 15. We write down 5 and carry over the 1 (or 10 from 15).
Next, we multiply the 5 in 435 with 7 (the tens-place in 173), which equals 35. We add the carry-over 1 to get 36. We write down the 6 and carry over the 3 (or 30).
Finally, we multiply the 5 in 435 with 1 (the hundreds-place in 173). Then add the carried over 3, resulting in 8.
The process is repeated with the remaining numbers in 435.
So for the multiplication above, the regrouped amounts are 10 and 30, corresponding to option B: 20 and 3.
For more such question on multiplication operation visit:
https://brainly.com/question/550188
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Sean read
1
-
5
of a book in
1
1
-
2
hours.
How long will it take Sean to read
1
-
2
of this book?
Enter your answer as a mixed number in simplest form in the box.
Answer:
[tex]3\frac{3}{4}[/tex] hours.
Step-by-step explanation:
Sean read [tex]\frac{1}{5}[/tex] of a book in [tex]1\frac{1}{2}[/tex] hours.
We are asked to determine the time that Sean requires to read [tex]\frac{1}{2}[/tex] of this book.
If the rate of reading the book is assumed to be constant, then we can use the unitary method to find the answer.
Now, Sean reads [tex]\frac{1}{5}[/tex] of a book in [tex]\frac{3}{2}[/tex] hours.
So, Sean reads the total of the book in [tex]\frac{3}{2} \div \frac{1}{5} = \frac{15}{2}[/tex] hours.
Hence, Sean reads [tex]\frac{1}{2}[/tex] of this book in [tex]\frac{15}{2} \times \frac{1}{2} = \frac{15}{4} = 3\frac{3}{4}[/tex] hours. (Answer)
On two investments totaling $7,500, Lydia lost 2% on one and earned 5% on the other. If her net annual receipts were $158, how much was each investment
Lydia invested $ 3100 in investment lost 2 % and invested $ 4400 in investment that earned 5 %
Solution:
Given that on two investment totaling $ 7500
Lydia lost 2% on one and earned 5% on the other
Her net annual receipts were $158
To find: amount invested in both investments
Let Lydia invest $ x in first investment where she lost 2 %
Let Lydia invest $ y in second investment where she earned 5 %
Total investment given = 7500
x + y = 7500 ---- eqn 1
Net annual receipt = 158
5 % y- 2 % x = 158
[tex]\frac{5}{100}y - \frac{2}{100}x = 158[/tex]
0.05y - 0.02x = 158 ------- eqn 2
Let us solve eqn 1 and eqn 2
From eqn 1,
x = 7500 - y
Substitute x = 7500 - y in eqn 2
0.05y - 0.02(7500-y) = 158
0.05y -150 + 0.02y = 158
0.07y = 158 + 150
0.07y = 308
y = 4400
Thus,
x = 7500 - y
x = 7500 - 4400
x = 3100
Thus she invested $ 3100 in investment lost 2 % and invested $ 4400 in investment that earned 5 %
Final answer:
Lydia invested $3,100 at a 2% loss and $4,400 at a 5% gain. A system of equations is set up and solved using substitution to determine the amount invested in each scenario.
Explanation:
To solve Lydia's investment problem, we need to set up a system of equations based on the given information
Total investment is $7,500.
She lost 2% on one investment and earned 5% on the other.
Her net annual receipts were $158.
Let's define:
x = the amount of money invested at a 2% loss
y = the amount of money invested at a 5% gain
The system of equations can be written as:
x + y = 7500 (the total amount invested)
-0.02x + 0.05y = 158 (the net receipts from the investments)
Multiplying the second equation by 100 to simplify the decimals:
-2x + 5y = 15800
Now we can use the method of substitution or elimination to solve for x and y. For this example, we'll use the substitution method:
Solve for y in the first equation: y = 7500 - x
Substitute y into the second equation: -2x + 5(7500 - x) = 15800
Now solve for x: -2x + 37500 - 5x = 15800
Combine like terms: -7x = 15800 - 37500
-7x = -21700
Divide by -7: x = 3100
Substitute x into y = 7500 - x: y = 7500 - 3100 = 4400
So Lydia invested $3,100 at a 2% loss and $4,400 at a 5% gain.
The scale map shows that 5 centimeters =2 kilometers.What number of centimeters on the map represents an actual distance of 5 kilometers?
Answer:
Therefore 12.5 centimeters on the map represents an actual distance of 5 kilometers.
Step-by-step explanation:
Given:
The scale map shows that
5 centimeters =2 kilometers.
To Find:
What number of centimeters on the map represents an actual distance of 5 kilometers?
Solution:
Let 'x' cm be on the map to represent 5 kilometer.
Given:
5 centimeters = 2 kilometers.
Therefore,
x cm = 5 kilometer
Soon Equality of proportion we get
[tex]\dfrac{5}{x}= \dfrac{2}{5}\\ \\x=\dfrac{5\times 5}{2}=\dfrac{25}{2}=12.5\ cm\\\\\therefore x = 12.5\ cm[/tex]
Therefore 12.5 centimeters on the map represents an actual distance of 5 kilometers.
A video game decreased in price from $50 to $45. What was the approximate percent decrease in the price? 0.1% 1% 5% 10%
Answer: 10%
50 is half of 100, so if it decreases 5 dollars from 50, then it has to be 10% of a decrease, or discount.
Hope this helps!
Answer:
10%
Step-by-step explanation:
50-45=5
5/50=1/10=10%
( SHOW WORK NEED IT BY TONIGHT! ) Write a system of equations to describe the situation below, solve using substitution, and fill in the blanks.
Two students in Mr. Kelley's class, Tori and Cora, have been assigned a workbook to complete at their own pace. They get together at Tori's house after school to complete as many pages as they can. Tori has already completed 16 pages and will continue working at a rate of 5 pages per hour. Cora has completed 13 pages and can work at a rate of 8 pages per hour. Eventually, the two students will be working on the same page. How long will that take? How many pages will each of them have completed?
After _ hours, Tori and Cora will have each completed _ pages in their workbooks.
Answer:
1 hour with 21 pages completed for each.
Step-by-step explanation:
First you need to list out what you know.
Tori:
Finished: 16 pgs
Rate: 5 pgs per hr
Cora:
Finished: 13 pgs
Rate: 8 pgs per hr
Now we compose Equations. In an equation we put the rate with the "X" because it is a constant rate of change. The finished amount of pages is our starting point or our y intercept we write it in this format:
y=mx+b
m being the rate of change
b being the initial amount or the starting point
For Tori the equation would be 5x+16 because 5 is our rate of change since she completes 5 pages per hour and 16 is our initial amount since she already completed them.
For Cora the equation would be 8x+13 because 8 is our rate of change since she completes 8 pages per hour and 13 is our initial amount since she already completed them.
we set these equation equal to each other:
5x+16=8x+13
eliminate the 5x on one side to leave the 16 by its self which in this case we subtract 5x to each side and get :
16=3x+13
the we subtract the 13 to leave 3x by its self and subtract 13 on both sides and get :
3=3x
lastly we divide 3 on both sides to isolate x and this would be our hours until they are both working on the same page:
1=x
this gives us 1 which means in 1 hour of working, both Cora and Tori will be working on the same page.
Substitute the 1 for each equation to get the total amount of pages completed in 1 hour:
5(1)+16
5+16
21 pages for Tori
8(1)+13
8+13
21 pages for Cora
Done
In one hour both Tori and Cora will have done 21 pages
Find an equation for the perpendicular bisector of the line segment whose endpoints are -7,-2 and 5,4
The equation of the perpendicular bisector of the line segment whose endpoints are (-7 , -2) and (5 , 4) is y = -2x - 1
Step-by-step explanation:
Let us revise some rules
The product of the slopes of the perpendicular line is -1, that means if the slope of one line is m, then the slope of the other is [tex]\frac{-1}{m}[/tex]The formula of the slope of a line whose endpoints are [tex](x_{1},y_{1})[/tex] and [tex](x_{2},y_{2})[/tex] is [tex]m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]The mid-point of a line whose endpoints are [tex](x_{1},y_{1})[/tex] and [tex](x_{2},y_{2})[/tex] is [tex](\frac{x_{1}+x_{2}}{2},\frac{y_{1}+y_{2}}{2})[/tex]∵ A line has endpoints (-7 , -2) and (5 , 4)
∴ [tex]x_{1}[/tex] = -7 and [tex]x_{2}[/tex] = 5
∴ [tex]y_{1}[/tex] = -2 and [tex]y_{2}[/tex] = 4
- Use the formula of the slope up to find the slope of the line
∴ [tex]m=\frac{4-(-2)}{5-(-7)}=\frac{4+2}{5+7}=\frac{6}{12}=\frac{1}{2}[/tex]
To find the slope of the perpendicular line to the given line reciprocal it and change its sign
∵ The slope of the given line = [tex]\frac{1}{2}[/tex]
∴ The slope of the perpendicular line = -2
∵ The perpendicular line is a bisector of the given line
- That means the perpendicular line intersect the given line
at its midpoint
∵ The mid point of the given line = [tex](\frac{-7+5}{2},\frac{-2+4}{2})[/tex]
∴ The mid point of the given line = [tex](\frac{-2}{2},\frac{2}{2})[/tex]
∴ The mid point of the given line = (-1 , 1)
Now we wand to find the equation of the line whose slope is -2 and passes through point (-1 , 1)
∵ The form of the equation is y = mx + b, where m is the slope
and b is the y-intercept
∵ m = -2
- Substitute the value of m in the form of the equation
∴ y = -2x + b
- To find b substitute x and y in the equation by the coordinates
of a point on the line
∵ Point (-1 , 1) lies on the line
∴ x = -1 and y = 1
∵ 1 = -2(-1) + b
∴ 1 = 2 + b
- Subtract 2 from both sides
∴ -1 = b
- Substitute the value of b in the equation
∴ y = -2x + (-1)
∴ y = -2x - 1
The equation of the perpendicular bisector of the line segment whose endpoints are (-7 , -2) and (5 , 4) is y = -2x - 1
Learn more:
You can learn more about the equations of the perpendicular lines in brainly.com/question/9527422
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25. Paulo's family arrived at the reunion at
8:30 A.M. How long do they have before
the trip to Scenic Lake Park?
DATA
Trip to Scenic
Lake Park
10:15 A.M. to 2:30 P.M.
Slide show
4:15 P.m. to 5:10 P.M.campfire 7;55p.m.to 9;30p.m
26. How much longer is dinner than the
Paulo's family has 1 hour 45 minutes before the trip to Scenic Lake Park.
To find out how long Paulo's family has before the trip to Scenic Lake Park, we will determine the amount of time between their arrival and the start of the trip.
Paulo's family arrived at the reunion at 8:30 A.M. The trip to Scenic Lake Park starts at 10:15 A.M.
Here's how to calculate the difference between these two times manually:
1. Convert both times to a 24-hour format (if needed):
- Paulo's family arrival time: 8:30 A.M. is already in the morning, so it stays the same.
- Trip start time: 10:15 A.M. is also in the morning, so it stays the same.
2. Calculate the hours remaining:
- From 8 A.M. to 9 A.M. is 1 hour.
- From 9 A.M. to 10 A.M. is another hour.
- From 8:30 A.M. to 10 A.M., they have a total of 1 hour and 30 minutes.
3. Calculate the additional minutes remaining:
- From 10:00 A.M. to 10:15 A.M. is an additional 15 minutes.
4. Add the additional minutes to the total time calculated:
- They already have 1 hour and 30 minutes, and we add another 15 minutes to this.
- So, the total time they have before the trip is 1 hour and 45 minutes.
Therefore, Paulo's family has 1 hour and 45 minutes of free time before the trip to Scenic Lake Park starts.
4x-1=2x+11
what is the value of x and what are the steps?
Answer:
x=6
Step-by-step explanation:
4x-1=2x+11
4x-2x-1=11
2x-1=11
2x=11+1
2x=12
x=12/2
x=6
Two equivalent fractions of 4/7
Answer:
8/14 and 12/21
Step-by-step explanation:
Just multiply numerator and denominator by the same number, e.g., 2 and 3 to get above.
Answer:
8/14 and 12/21
Step-by-step explanation:
If Point (3, 4) is reflected over the x-axis, what are the new coordinates?
(A.) (-4, -3)
(B.) (3, -4)
(C.) (-3, -4)
(D.) (-4, 3)
Answer:
If (3, 4) is reflected over the x-axis, the new coordinates are (3, -4).
The correct answer is B.
In the reaction of hydrogen with iodine
Answer:
HI hydrogen iodide
Step-by-step explanation:
H2(gas)+I2(gas)---------->2HI(gas)
Answer:
I don't really know what you were asking; would you mind please clarifying? :)
Step-by-step explanation:
From what I'm guessing from the question is, "Iodine, and hydrogen combine to form hydrogen iodide. In the reverse reaction, hydrogen iodide decomposes back into hydrogen and iodine."
Did that help?
An office building is 20 feet taller than twice the height of a bank building. If the office building is 320 feet tall, how tall is the bank building?
A. 150 feet
B. 160 feet
C. 180 feet
D. 300 feet
Plus explication thanks!
Answer: A the bank building is 150 feet tall.
Step-by-step explanation:
If you subtract 20 from 320 then you get 300 then divide that by 2 you get 150.
-4,4 dilated by a scale factor of 5
Answer:
(-20,20)
Step-by-step explanation:
Given coordinates are (-4,4).
Also, we need to dilate by a scale factor of 5.
The term dilation refers to changing the value of coordinate by a scale factor.
If the coordinate is said [tex](x,y)[/tex] and it is going to be dilated by a scale factor [tex]'k'[/tex].
Then the new coordinate will be (kx, ky).
So,
[tex](-4,4)\\\\k=5\\\\(-4\times5,4\times5)=(-20,20)[/tex]
The coordinate [tex](-4,4)[/tex] after dilated by a scale factor [tex]5[/tex] will be [tex](-20,20)[/tex]
Freshly frozen yogurt is the popular place in town. Saturday is their busiest night. The ratio of number of cones to the number of cones to the number of cups sold is 6:5 however on Sunday night the ratio of the number of cones to the number of cups is 4:1 if freshly frozen yogurt sold 42 cones on Saturday night how many cups did it sell on Saturday night?
Answer:
On Saturday night it had sold 35 numbers of cups.
Step-by-step explanation:
On the Saturday night the ratio of the number of cones to the number of cups sold is 6 : 5 in Freshly frozen yogurt however on Sunday night the ratio of the number of cones to the number of cups is 4 : 1.
Now, if the Freshly frozen yogurt sold 42 cones on Saturday night then in the ratio of 6 : 5, it sold cups [tex]\frac{5}{6}[/tex] times the number of cones.
Therefore, on Saturday night it had sold [tex]42 \times \frac{5}{6} = 35[/tex] numbers of cups. (Answer)