Step-by-step explanation:
subtraction if that wut u askim
2. A set of barbells consist of red and blue discs. Discs with the same color have the same mass. Using a balance,
Lia found that 7 blue discs balance 1 red disc and a 5kg mass, while 2 blue discs and a red disc balance a 4kg
mass. Find the masses of the red and blue discs. (2kg, 1kg)
Let r be the mass of a red disc and b the mass of a blue disc.
7 blues have the same mass as 1 red along with a 5 kg mass, so
7b = r + 5
7b - r = 5
2 blues and 1 red have the same mass as a 4 kg mass, so
2b + r = 4
Solve for b and r . Notice that adding the equations together eliminates r :
(7b - r) + (2b + r) = 5 + 4
9b = 9
b = 1
Then
7 • 1 - r = 5
r = 7 - 5
r = 2
So each red disc has a mass of 2 kg, and each blue disc has a mass of 1 kg.
Determine the slope and y-intercept of a line that passes through the points (-2, 12) and (4, -15).
Step-by-step explanation:
y²-y¹/x²-x¹
(-15)-(12)/4-(-2)
-3/6
=-0.5
y=mx+b
12=-0.5(-2)+b
12=1+b
12-1=b
11=b
The equation of a line is given by:
y = mx + c
where m is the slope of the line and c is the y-intercept.
The slope of the line that passes through the points (-2, 12) and (4, -15) is -27/6
The y-intercept of the line that passes through the points (-2, 12) and (4, -15) is 3
What is an equation of a line?The equation of a line is given by:
y = mx + c
where m is the slope of the line and c is the y-intercept.
Example:
The slope of the line y = 2x + 3 is 2.
The slope of a line that passes through (1, 2) and (2, 3) is 1.
We have,
The equation of a line is y = mx + c.
The slope can be calculated.
Slope = (d - b) / )(c - a)
Where (a, b) and (c, d) are the two points on the line.
The line passes through (-2, 12) and (4, -15)
This means,
Slope = (-15 - 12) / (4 + 2) = -27 / 6
m = -27/6
The line passes through the point (-2, 12).
12 = -27/6 x -2 + c
12 = 9 + c
c = 12 - 9
c = 3
Thus,
The slope of the line that passes through the points (-2, 12) and (4, -15) is -27/6
The y-intercept of the line that passes through the points (-2, 12) and (4, -15) is 3
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Help please I am very confused
The sides of the triangle occur in a ratio of 4 : 7 : 2, so if x is some positive number, then we can write each side's length in terms of x as 4x, 7x, and 2x.
The perimeter is 299 yd, so
4x + 7x + 2x = 299 yd
13x = 299 yd
x = (299 yd) / 13
x = 23 yd
Then the sides of the triangle have lengths of
4x = 4 • 23 yd = 104 yd
7x = 7 • 23 yd = 161 yd
2x = 2 • 23 yd = 46 yd
"Median" here refers to the side length between the shortest and longest sides, so the answer would be 104 yd.
WHY I HHAVE FAT CHIKIN HE DO NOTHIG HE IS REALLY FAT AND HEVY HE MO LAY WGG EITHER TELL ME WHY HOW I MAKE HIM NO FAT
A bouquet contains 6 roses and 9 daisies. This represents 75% of the flowers in the bouquet. How many total flowers are in the bouquet? this is actually confusing me please help
Answer:
20 total flowers
Step-by-step explanation:
9+6=15.
20/4=5
5*3=15
The answer is 20 total flowers.
(HELP!!) Please Factor Completely
- a/6 + 7 = - 14*********************
Answer:
a=126
Step-by-step explanation:
Pressure is force divided by area calculate the force when the pressure is 18N/m^2
Answer:
hi
Step-by-step explanation:
1+1=2
I didn’t pay attention to class cause I had to make my sister lunch today can someone explain what that is ? I’ll give brainlest
Answer:
Definitely not a function.
Step-by-step explanation:
Answer:
Not a function.
Step-by-step explanation:
Its not a function because there are two outputs (i.e. when you draw a vertical line in the diagram, you cross over the curve to times)
A function has ONLY ONE INPUT AND OUTPUT.
What is the commutative and associative propertys?
Answer:
Commutative property: states that the order in which we multiply numbers does not change the product.
Associative property: states that you can add or multiply regardless of how the numbers are grouped (aka parenthesis).
Find intervals of which
Answer:
Step-by-step explanation:
( - ∞, - 7), (-3, 5)
Need help please!! Due tomorrow
Answer:
i got A but im not sure if its correct
Describe the slope of the line then find the slope helpp plss :)
Answer:
Slope = -1
Step-by-step explanation:
Brainlist please
Answer:
Step-by-step explanation:
Once you have two points, you can describe the line with:
[tex]y = mx + b \\where\\\\m = \frac{y_2-y_1}{x_2-x_1}[/tex]
our two points are (-2, 3) and (3, -2)
calculate m:
[tex]m = \frac{3-(-2)}{-2-3} = \frac{5}{-5} = -1[/tex]
the slope is negative
A bus covers 270 km distance in 6hrs i) Find the speed of the bus in the km/per hr ii) how many kilometer does it travel in 9hrs at the same speed? (Unitary method)
Answer:
Distance=Speed×Time
When speed is 40 kmph
Distance traveled by car =40×9
=360 km
When speed is 60 kmph
Time taken to complete the journey =
60
360
=6 hours
Answer:
270 ÷ 6 = 45
45 x 6 = 270
45 x 9 = 405
The answer is 405
Hope it helped❤️
What is 1872.072 rounded to the nearest hundredth?
Answer:
1872.07
Step-by-step explanation:
The hundredth place is the second digit after the decimal (.).
The 1872 will always be the same since it is hundredth and not something else like tens or hundreds.
1872....
So since the hundredth place is the second digit after the decimal, you can find that the second digit is 7.
4 or less don't round up, 5 or more round up
Since the next digit is 2, it is 4 or less, so don't round up, so you cut off the 2, hence the 1872.07
EDIT: Aha I need my sense of humor back... brb
Answer: 1872.07
Step-by-step explanation: 7 is in hundredth place so we take the number that comes after it and round up or down since it 2 we round down to 0 then add it to 7.
7+0= 7 so 7 stays the same (because numbers from 1-4 round to zero and numbers from 5/9 round to 1)
4x^4 + 9x^3 - 3x^2 - 18x - 10
Jose needs $75 to pay for the monthly subscriptions for Hulu, Netflix,
Disney, and HBO GO. His mother agrees to pay him $5 an hour for raking
leaves in addition to his $10 allowance. What is the minimum number of
hours that Jose must rake leaves to earn enough money to pay for both
subscriptions?
Answer:13 hours
Step-by-step explanation:if you get paid your allowance then wrok for 13 hours-13x5=65+10=75
Factor x^3 - 6x^2 + 11x - 6 with steps shown
Factor the expression
3−2−52+5+6=0
for the function of F defined by f (x) = x + 8. what is the value of x when f (x) = 10
Answer:
x = 2
Step-by-step explanation:
f(x) = x + 8
f(x) = 10
10 = x + 8
minus 8 from the both sides
10 - 8 = x
2 = x
x = 2
(04.06 LC)
Identify the type of sequence shown in the table below and select the appropriate response. (5 points)
n f(n)
1 48
2 −96
3 192
4 −384
5 768
a
Arithmetic sequence; common difference is 96
b
Arithmetic sequence; common difference is −144
c
Geometric sequence; common ratio is 3
d
Geometric sequence; common ratio is −2
Answer:
d Geometric sequence; common ratio is −2
Step-by-step explanation:
Identifying Sequences
There are two possible types of sequences to choose from, Arithmetic and Geometric.
The arithmetic sequences are identified because each term is obtained by adding or subtracting a fixed number to the previous term. This number is called the common difference.
In the geometric sequences, each term is found by multiplying (or dividing) the previous term by a fixed number, called the common ratio.
The given sequence is:
48, -96, 192, -384, 768,....
To identify the type of sequence, we could try subtracting the second term from the first, the third from the second, etc. If those differences were constant, it would be an arithmetic sequence.
In this case, it's not necessary because the sign of the terms is alternating. It can only be possible with geometric sequences with a negative common ratio.
Dividing the second by the first term:
r = -96 / 48 = -2
Dividing the third by the second term:
r = 192 / -96 = -2
The rest of the divisions of successive terms lead to the same common ratio, thus, the answer is:
d Geometric sequence; common ratio is −2
what is the value of q in the equation 4/5q = 32
Answer:
40
Step-by-step explanation:
4/5 * q = 32
First you divide 4/5 by itself so you can eliminate it from the equation and then you have to divide 32 by 4/5 n when you do that you get 40. So q = 40.
1 point
A manufacturing plant has 60
supervisors. If 27 of the supervisors are
men, then
O 45% are women
55% are men
55% are women
O 75% are men
O 75% are women
Answer:
55% are women
Step-by-step explanation:
27÷60= 0.45
0.45x100=45
100-45=55
45% men
55% women
There are 55% are women if the manufacturing plant has 60 supervisors. If 27 of the supervisors are men, option third is correct.
What is the percentage?It is defined as the ratio of two numbers expressed in the fraction of 100 parts. It is the measure to compare two data, the % sign is used to express the percentage.
We have:
A manufacturing plant has 60 supervisors. If 27 of the supervisors are men.
The number of women = 60 – 27 = 33
The percent of women = (33/60)×100
= 0.55×100
= 55%
Thus, there are 55% are women if the manufacturing plant has 60 supervisors. If 27 of the supervisors are men, option third is correct.
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Find the slope from the pair of points. (-5, -1) (5,-4)
Answer:
-3/10
Step-by-step explanation:
-4--1= -3
5--5= 10
2/3 of a class are girls what is ratio girls to boys in the class
Answer:
2:1
Step-by-step explanation:
2:3=1:3
as product of extremes = product of means
(2)(3):(1)(3)
6:3
2:1
100 middle school students take a survey that asked them About there fruit Preferences 37 out of 100 students said they prefer pineapple to peaches how would you write this amount as a percentage
Answer:
37%
Step-by-step explanation:
First, we need to know that 1 student equals 1 percent.
If 37 students chose pineapple, than it would be 37%
(Some times, you have lets say... 75 students, so you would do 75, subtracted from 74 (Or one less), to get how much one student is.)
Given that events A and B are independent with P(A)=0.3P(A)=0.3 and P(A\cap B)=0.216P(A∩B)=0.216, determine the value of P(B)P(B),
Answer:
0.72
i got it wrng and this was the correct answer
Step-by-step explanation:
A roller coaster at an amusement park rises to a height of 196 feet above the ground. So far, it has risen 36% of this height. To estimate the height the roller coaster has risen so far, Jake did the following.
1. Rounded 36% to 40%
2. Rounded 196 to 200
3. 10% of 200 is 20
4. 20 (4) = 80
5. 36% of 196 is about 80
However, Jake’s estimate was too high by almost 10 feet. Why was his estimate off by so much?
He made a computation error.
He rounded the percent up to 40% and the number up to 200.
He made a rounding error, and should have rounded 196 down to 100.
He should have rounded the percent down to 30% and the number down to 190.
Answer:
Step-by-step explanation:
196*36%=70.56 feet
He rounded the percent to 40% and the number to 200.
Answer:
He rounded the percent up to 40% and the number up to 200.
Step-by-step explanation:
I got it right on my test
7 - 0.65r + 3 there is no options all you have to do is simplify
Answer:
What caused the differences in their behavior? The food coloring in cool water remained at the bottom of the container. ... The behavior of the food coloring was caused by the movement of heat through the water and the formation of convection currents. The warmer water is less dense, so it rises to the surface.
Step-by-step explanation:
Answer:
10 - .65r
Step-by-step explanation:
you just have to combine like terms, in this case the whole numbers. 7 + 3 = 10 so yup
PLEASE HELP
Which of the following are ordered pairs for the given function?
Select all that apply.
f(x) = 1 + x
(1, 2)
(3.3)
0 (0, 2)
(1, 0)
(0,1)
9514 1404 393
Answer:
(1, 2)
(0, 1)
Step-by-step explanation:
The function tells you the second number of the pair will be one more than the first number of the pair. That is, the pair will be ...
(x, 1+x)
Appropriate choices are ...
(1, 2)
(0, 1)
4. Divide, using synthetic division: 16x^3 +80x^2+x+5/x+5
Part l: Show the proper setup of the problem, placing coefficients and divisors
in their proper places (4 points)
Part II: Carry out the division problem, and write the quotient in proper
polynomial notation. (6 points)
Answer:
Step-by-step explanation:
x+5=0
x=-5
-5) 16 80 1 5
| -80 0 -5
____________
| 16 0 1 | 0
quotient=16x²+1
Remainder=0