Answer:
x = 3
Step-by-step explanation:
5x + 3 = 3x + 9
subtract 3 on both sides (cancels out 3) (inverse operation)
5x = 3x + 6
subtract 3x on both sides (cancels out 3x) (inverse operation)
2x = 6
divide both sides by 2 (isolates x) (simplifies)
x = 3
distributive −2x(−10x+1)
Answer:
[tex]20x^{2} -2x[/tex]
Step-by-step explanation:
Multiply using the distributive property.
Answer:20x-2x is the answer..
Mark brainliest
Plzzz follow hope u like it
ILL GIVE BRAINLIEST. HELP ASAP. What is the greatest common factor in the two terms of the expression 3x - 2y?
Kylie's family took a road trip to the Grand Canyon, Kylie fell asleep 42% of the way through the trip. If the total length of the trip was 600 miles, how many miles had they travelled when Kylie fell asleep?
Question 4
Which of the following statements is true (read each carefully!):
.
The square root of 30 is between 6 and 7.
• The square root of 41 is between 5 and 6.
The square root of 14 is between 3 and 4.
• The square root of 27 is between 14 and 15.
Answer:
The square root of 14 is between 3 and 4.
Step-by-step explanation:
The answer would be that because the square root of 14 is 3.74165738677. HOPE THIS HELPS! CAN I HAVE BRAINLIEST?!
Express the number 0.00001038 in scientific notation
HELP ASAP I WILL MARK BRAINLEST
Internet Usage The number of hours people in the United States
spent using the Internet each year from 1998 to 2001 can be
modeled by the function f(x) 5 26.4x 1 54.4 where x is the number
of years since 1998.
a. Graph the function and identify its domain and range.
b. Find the number of hours that people spent on the Internet
in 2000. Explain how you found your answer.
c. When did people spend about 120 hours per year on the
Internet? Explain how you found your answer.
Answer:
Look in picture
Step-by-step explanation:
Functions can be represented on graph and as equation.
The domain and the range of the function are [0,3] and [54.4,133.6]The number of hours spent in 2000 is 107.2People spend about 120 hours per year in 2001The function is given as:
[tex]f(x) = 26.4x + 54.4[/tex]
(a) The graph, domain and range
See attachment for the graph of [tex]f(x) = 26.4x + 54.4[/tex]
The function represents years from 1998 to 2001.
This means that:
[tex]x = 0[/tex] in 1998 and [tex]x =3[/tex] in 2001
So, the domain is: [tex][0, 3][/tex]
From the graph;
[tex]x = 0 \to f(x) = 54.4[/tex]
[tex]x = 3 \to f(x) = 133.6[/tex]
So, the range is [tex][54.4,133.6][/tex]
(b) Number of hours spent in 2000
First, we calculate x.
[tex]x = 2000 - 1998[/tex]
[tex]x =2[/tex] i.e. 2 years since 1998
So, we have:
[tex]f(x) = 26.4x + 54.4[/tex]
[tex]f(2) =26.4 \times 2 + 54.4[/tex]
[tex]f(2) =107.2[/tex]
(c) When people starts to spend 120 hours.
We have:
[tex]f(x) = 26.4x + 54.4[/tex]
Substitute 120 for f(x)
[tex]120 = 26.4x + 54.4[/tex]
Collect like terms
[tex]26.4x = 120 - 54.4[/tex]
[tex]26.4x = 65.6[/tex]
Solve for x
[tex]x = \frac{65.6}{26.4}[/tex]
[tex]x = 2.48[/tex]
Round 2.48 to the smallest integer greater than 2.48
[tex]x = 3[/tex]
This represents the number of years, since 1998.
So, the actual year is:
[tex]Year =1998 + 3[/tex]
[tex]Year = 2001[/tex]
Hence, people spend about 120 hours per year in 2001
Read more about functions and graphs at:
https://brainly.com/question/18806107
Write a rule that would allow you to test whether (x,y) is on line ℓ.
Answer:
We have a line L.
Remember that in two dimensions, we can write a line as:
y = a*x + b
where a is the slope and b is the y-axis intercept.
For a line that passes through the points (x1, y1) and (x2, y2), the slope can be written as:
a = (y2 - y1)/(x2 - x1).
And then using one of these points, we can find the value of b.
Then wen we got the equation for the line:
y = a*x + b
We can input a point (x, y)
And see if the equality is true, then the point belongs to the line L.
What is the value of 6/x +2c^2, when x= 3?
O 8
O 11
O 14
20
Answer:
the answer is 11
Step-by-step explanation:
dont know
Please help me please I feel like crying cause I can't do it...
Answer:
1. 39
2. 15
3.329
4. 16
5. 300
Step-by-step explanation:
Just divide the first two numbers and then multiply the quotient by the last number. You'll be ok, you've got this, keep your head up!
1. 52/4 = 13 and 13 x 3 = 39
2. 45/9 = 5 and 5 x 3 = 15
3. 470/10 = 47 and 47 x 7 = 329
4. 10/2.5 = 4 and 4 x 4 = 16
5. 125/2.5 = 50 and 50 x 6 = 300
You go to the store and notice the people standing in line. 7 adults and 4 children. If this ratio stays the same and there 55 people in the store. how many would be children?
Answer:
20
Step-by-step explanation:
7+4=11
11*5= 55
4*5=20 :)
The number of children and adults will be 35 and 20, respectively.
What are ratio and proportion?A ratio is a group of sequentially ordered numbers a and b expressed as a/b, where b is never equal to zero. When two objects are equal, a statement is said to be proportional.
You go into the store and observe the folks in queue. There are 7 adults and 4 children. If this ratio remains constant and there are 55 people in the store.
7x / 4x = constant
Then the equation is given below.
7x + 4x = 55
11x = 55
x = 11
Then the number of adults is given as,
7x = 7 (5) = 35
Then the number of children is given as,
4x = 4 (5) = 20
The number of children and adults will be 35 and 20, respectively.
More about the ratio and the proportion link is given below.
https://brainly.com/question/14335762
#SPJ2
Trisha wants to buy a computer for $775. She already has $275 saved and earns $100 a week babysitting. Write an inequality that could be used to determine how many weeks she would have to work to afford the computer. Use w to represent the number of weeks.
Answer:
she would be able to Oxford its if she worked for 5 weeks
What is 40009,547+24719,783? I need to know now
Answer:
64729,330
You add the numbers together using place value.
Maya claims that 8n is the number of dots in figure n. Kiana claims that the number of dots in figure n is given by 4(n+1)
Consider the square arrangements below in relation to the girls' expressions, where n represents the figure number.
Determine whether Maya, Kiana or both girls are correct in their given expressions. Justify your response.
The evaluation of your response will be based on the following criteria.
Answer:
Answer:
Kaya's answer is correct.
Step-by-step explanation:
The number of dots in successive figures are
8, 16, 24.
So Kaya's solution 8n is correct.
When n = 1, first square = 8*1 = 8 dots
n = 2: second square = 8*2 = 16
n = 3, 3rd square = 8*3 = 24.
If I have interpreted Kianna's formula correctly
for n = 1, then the number of dots = 2(1+ 1)^2 - 2(1 - - 1)^2
= 0.
Which of the points shown is on the y-axis?
Jill is using a map of her town to determine how far the park is from school. The map does not have a scale, but Jill knows her school is 3 miles from home. On the map, the distance between home and school measures 1.5 inches. If the park is 2.5 inches from the school on the map, what is the actual distance in miles?
Answer:
The answer is five miles.
Step-by-step explanation:
Here’s one way to solve this problem.
First, write the ratio of the known distance on the map to the corresponding actual distance, one point five inches over three miles.
Next, choose a variable, such as d, to represent the unknown distance between the school and the park.
Then, write the ratio of the distance from the park to the school on the map to the corresponding actual distance, two point five inches over d miles.
Next, write a proportion equating the two ratios.
Now, cross multiply.
Finally, divide both sides by one point five to arrive at the actual distance, five miles.
So, the actual distance between the park and the school is five miles.
Answer:
5 miles!
Step-by-step explanation:
Hope this is helpful ^>^
Please help me my mums gonna kill me if I fail this assignment.
I`ve been working all day and don´t understand how to solve it
Answer:
17 in,3 in, and 19in
so the third answer
Step-by-step explanation:
Renee is simplifying the expression (7) (13/29) (1/7).She recognizes that 7 and 1/7 are reciprocals, so she would like to find their product before she multiplies by 13/29. Which property will allow Renee to do this without changing the value of the expression
A- associative property
B- commutative property
C- distributive property
D- identity property
Answer:
commutative property
Step-by-step explanation:
Answer:
c\
Step-by-step explanation:
distributive property
Help this is a major grade help ASAP plzzz 17 points
Answer:
y= 15x+225
Step-by-step explanation:
Answer:
D. y = 15x + 225
Step-by-step explanation:
x would be the amount of prints. y is the total price. So doing this math equation would get you the total price, or y.
mrs marvel bought some t-shirts. she gave 1/2 of them to coach nine, 2 of them to mrs. lewis and kept 5 to herself. how many t-shirts did she buy?
Answer:
14
Step-by-step explanation:
assuming that the shirts in the question are the only shirts bought, 2+5 is 7, and the other half would also be 7, making it 14
Use the following sequence to:
9, 5, 1, -3, -7, ...
A) Identify the parts for the sequence:
Common Difference "d" =
ai =
ao =
B) Write the recursive form for the sequence.
an = an-1
an =
C) Write the explicit forms for the sequence.
+ (n - 1)
Simplified: an =
D) Find a31. Show work on your paper.
a31
Step-by-step explanation:
A) d = a2-a1 = 5-9 = - 4
_________________
distance be tween (5,-8) and (5,2) on the coordinate plane
Answer:
10 is the distance
Step-by-step explanation:
d = square root (x2-x1)^2 + (y2-y1)^2
(5-5)^2 = 0
(2-(-8))^2 = 100
0 + 100 = 100
square root 100 = 10
Write the standard form of the equation of the line that passes through (-2, -3) and (2, -5).
the slope is 6-2/2-(-2)=4/4=1
point slope form: y-6=1(x-2)
slope-intercept form: y=x+4
Standard form: -x+y=4 change to x-y=-4
Hope that had helped
Have a nice day :)
DUE IN 5 MINS PLEASE HELP
PLSSSS
You work in the packing department of Regal China You can pack a crate of dishes in 20 minutes. How many crates can you pack In 4 hours?
Answer:
12
Step-by-step explanation:
you can pack one pack in 20 min
there are three 20 min in one hour
multiply three times the four hours and you get 12
can you help me the question is what would happen if the inches was one how much would the days be
Answer: 1.75 Days
Step-by-step explanation: I don't really know how to explain this?
Tell me if this was helpful :D
Convert 120 inches to feet.
Answer:
10 feet
Step-by-step explanation:
12 inches = 1 foot
120/12 = 10
10 feet
Answer:
10 foot.
Step-by-step explanation:
120 divided by 12
The gardener mows your lawn in $9 and earns $45. Write and solve an equation to find the number of hours of the gardener worked
All I need is the equation plz help.
Answer:
45/9=__
Step-by-step explanation:
Please mark me brainliest
4(x – 5) +3x =15 solve the equation
Answer:
x = 3.57
Step-by-step explanation:
4x - 20 + 3x = 15
4x + 3x = 15+20
7x = 25
x = 3.57
Pam wants to make a new banner for the school in the parking lot. If her banner starts at 3 feet tall and 4 feet wide; and she wants to enlarge it by a factor of 7, what are her final measurements
Answer:
21 feet tall and 28 feet wide
Step-by-step explanation:
A mile is 5, 280 feet long. A certain indoor gym has a running track for which 12 laps around the track is equivalent to 1 mile. Explain how you can use partial quotients to determine
how many feet long the track is
X
Hint
1 of 2
Dividing by partial quotients means subtracting multiples of the divisor from the dividend until there is nothing left to subtract.
First, I would use
and subtract
Then I would use
X
in order to decrease the dividend to 0.
Adding the partial quotients
and
gives the whole-number quotient,
The track is 440 feet long.
Answer:
440 feet
Step-by-step explanation:
The relationship between mile and feet is given as:
1 mile = 5280 feet.
The length of 12 laps around the track is equivalent to 1 mile:
12 laps = 1 mile
Dividing both sides by 12 and simplifying:
12 laps / 12 = 1 mile / 12
1 lap = (1/12) mile
This means that the relationship between the length of the track and feet is given as:
Length of track = (1/12) × 5280 feet
Simplifying the expression:
Length of track = 440 feet
an integer is choose from 20 to 30 what is probability of its a prime number
Answer: 20%
Step-by-step explanation:
We have to find out how many prime numbers there are from 20 to 30.
There are only 23 and 29. We have to make a fraction out of 2 over 10.
The fraction can be: [tex]\frac{2}{10}[/tex]
[tex]\frac{2}{10}[/tex] can be written as a percent as 20%.
The answer is 20%
