Answer:
Step-by-step explanation:
y = -x + 2 -------(i)
2x - y = -5 -----------(ii)
Substitute y = -x + 2 in equation (ii)
2x - (-x + 2) = -5
2x + x - 2 = - 5
3x - 2 = -5 {add 2 to both side}
3x -2 + 2 = -5 + 2
3x = -3 { divide both sides by 3}
3x/3 = -3/3
x = -1
Plug in the value of x in equation (i)
y = - (-1) + 2
y = 1 +2
y = 3
Will mark brainliest
At the beginning of an experiment, there are 600 grams of contaminants. Each hour, half of the contaminants are filtered out. How many grams of contaminants remain after 4 hours?
PLEASE SHOW WORK OR I WON'T MARK YOU THE BRAINLIEST
Answer:
37.5
Step-by-step explanation:
If you cut 600 in half 4 times the first time it will be 300 because 600/2 is 300. The second time it will be 150 because 300/2 is 150. The third time it will be 75 because 150/2 is 75. The fourth time it will be 37.5 because 75/2 is 37.5, so that is the answer.
If this helps please give me brainliest. Thx :)
Answer:
37.5 grams of contaminants remain after 4 hours.
Step-by-step explanation:
=600 x 1/2 x 1/2 x 1/2 x 1/2
=600 x 1/16
=37.5
PLEASE HELP ME!!!
I don't understand....
If possible, please explain!
Answer:
55
Step-by-step explanation:
Since this is an isosceles triangle, the angles at the bases of the identical legs must be equal
<A = <C
3x+40 =x+50
Subtract x from each side
3x-x+40 = x+50-x
2x +40 = 50
Subtract 40 from each side
2x+40-40=50-40
2x = 10
Divide each side by 2
2x/2=10/2
x = 5
We want to find <A
3x+40
3(5)+40
15+40
55
Math question down below
Answer:
2 3/8
Step-by-step explanation:
5 1/8 - 2 3/4
= 5 1/8 - 2 6/8
= 4 9/8 - 2 6/8
= 2 3/8
Pls I need this right away if you answer I’ll mark you the brainliest. Pls put how you got your answer too!
Answer:
6 cube/to the 3rd units
Step-by-step explanation:
um idk if this is what you want but yeah
if you spilt it into a 2x2x1 and a 1x2x1 you can count that there are 6 cube units
Answer:6 cubes
Step-by-step explanation:
There are 2 ways that I think you could solve this.
1. First, you could make those 2 missing cubes actual cubes, so then you could find the volume of the cube by doing 2x2x2(length x width x height) and you would get 8 cubes. After that, you would take away the two missing cubes, and you would get 6 cubes.
2. You could also just count the cubes. I counted the two inner cubes and then counted the 4 outer cubes, and got 6 cubes.
Hope this helps!
What is the y-intercept of this function?
f(x) = 2(x - 7)2 - 32
(0,-32)
(0,66)
(0,-7)
(0,17)
Answer:
(0, 66 )
Step-by-step explanation:
To find the y- intercept, let x = 0 and solve for y
f(0) = 2(0 - 7)² - 32
= 2(- 7)² - 32
= 2(49) - 32
= 98 - 32
= 66
The coordinates of the y- intercept are (0, 66 )
report this
what is 79 to the power of 3 x 7 - 3.78
Answer:
4.75486852E32
Step-by-step explanation:
21-3.78=17.22
[tex]79^{17.22}[/tex]=4.75486852E32
A company is hosting an event for its employees to celebrate the end of the year. It asks the employees whether they prefer a lunch event or a dinner event. It also asks whether they prefer a catered event or a potluck. The results are shown in the two-way table.
Answer:
dinner potluck
Step-by-step explanation:
tis a great meal for all them vikings
Which compound inequality is equivalent to the absolute value inequality |b| greater than 6? –6 > b and b > 6 b > –6 or b < 6 –6 < b and b > 6 b < –6 or b > 6
Answer:
The correct inequality is: b< -6 or b > 6
Step-by-step explanation:
The absolute value operator always results in a positive number, in such a way that if b > 0, then |b| = b, while if b < 0, then |b| = -b. With this in mind, let's look at the inequality given:
|b| > 6
This will be true for values of b that are greater than 6 and values of b that are less than -6, due to the absolute value operator. Therefore the compound inequality that represents this situation is:
b< -6 or b > 6
Answer:
I think it is D (and)
Step-by-step explanation:
"Or" means that the b value can be less than -6 or greater than 6
so it could satisfy either one
so if you plug in a value that satifies one of the inequalities (ex: -7)
|-7|>6 and it works!
help me with this please I don't exactly get it
Answer:
P = 40.56 in (ANS)
Step-by-step explanation:
radius = 8/2 = 4 in
semi-circle perimeter = pi * R = 3.14 * 4 = 12.56 in
figure perimeter = 12.56 + 10 + 8 + 10 = 40.56 in (ANS)
Karen has a coupon for $1.52 off any
candy related item. She decides to buy
a package of 9 chocolate bars that
normally costs $10.25. If Karen uses
her coupon, what will the price per
chocolate bar be?
—
Enter
Answer:
$8.73 per package of candy bars
Step-by-step explanation:
10.25 - 1.52=
What is the simplest form of this expression y2 (3y + 4) + 5y3
Answer:
y2 (3y + 4) + 5y3 :))
Step-by-step explanation:
please give me a good rating lol
Answer:
y2(3y+4)=5y3
Step-by-step explanation:
What is the distance between (-6, 8) and (-3,9)?
Choose 1 answer.
4
6
√10
√15
Answer:
180o 2 + 3 = 180o If the above statements are ... Theorem to Find Distance Geometry Geometry DIRECTIONS: Choose or write the correct answer . ... -8 12 units C√12 units D√74 units 13 units -2 -3 -4 A6 units -5-6 B -7 -8 -9 4.
Step-by-step explanation:
What’s 1 Apple plus 1 apple
Answer:
2apples
Step-by-step explanation:
Dr. Barber needs to pay her employees $15.00 an hour. If she has five
technicians and they each worked 25 hours, how much money in total will Dr.
Barber pay all of the technicians?
Answer:
$1,875
Step-by-step explanation:
$15.00 per hour (multiply by hours)
per technician (multiply by technicians)
so: 15x25=375 then 375x5=1,875
Answer:
$1875
Step-by-step explanation:
First, let's find how many hours the technicians worked
She has 5 technicians, and the each worked 25 hours
We can multiply 5 and 25 to find the total number of hours
5*25=125
Now we know that the technicians worked 125 hours altogether. Now, we need to find how much money that is.
They worked 125 hours, and they are paid $15 per hour
We can multiply 125 and 15 to find the cost
125*15=1875
So, Dr. Barber will pay the technicians $1875 in total
What is the area of the following circle?
Either enter an exact answer in terms of it or use 3.14 for pie and enter your answer as a decimal.
r=1
Answer:
A = 3.14
Step-by-step explanation:
A = πr^2
A = π(1)^2
A = π = 3.14
What is the IQR (interquartile range) for the following data? 7, 9, 13, 4, 18, 3, 9, 10, 15, 8, 2, 6, 9
The IQR (interquartile range) is mathematically given as
IQR=9
What is the IQR (interquartile range)?
Question Parameters:
Sample data 7, 9, 13, 4, 18, 3, 9, 10, 15, 8, 2, 6, 9
Sample size13
Generally, the equation for the IQR (interquartile range) is mathematically given as
IQR=Q3-Q1
Therefore
IQR=37-28
IQR=9
In conclusion, the IQR (interquartile range) is
IQR=9
Read more about Arithmetic
https://brainly.com/question/22568180
Derek uses a 52 inch flat steel bar that weighs 10.4 lbs to make a rack in the garage. Find the weight of a 67-inch steel bar?
Answer:
13.4lbs
Step-by-step explanation:
10.2/52 = 0.2lbs per inch
0.2(67) = 13.4lbs
Using unitary method, the weight of a 67 inch steel bar is 13.4 lbs.
What is unitary method?The formula of the unitary method is to find the value of a single unit and then multiply the value of a single unit to the number of units to get the necessary value.
Weight of 52 inch flat steel bar = 10.4 lbs.
Weight of 1 inch flat steel bar = 10.4/52 = 0.2 lbs.
Weight of 67 inch flat steel bar = 0.2 * 67 = 13.4 lbs.
Learn more about unitary method here
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John is creating a shed in his backyard he wants to use brick for the front side with the door using the given brick how many will he need to cover the front of the shed
Answer:
180 bricks.
Step-by-step explanation:
The dimensions of the front of the shed are 30 x 12.
30 x 12 = 360
The dimensions of the brick are 2 x 1.
2 x 1 = 2.
360/2 = 180.
What is 8(4-x) = 772
8(4-x) = 772
32 - 8x = 772
-8x = 772 - 32
-8x = 740
8x = -740
x = -740/8
x = -92.5
hope it helps!
PLEASE!!!
A survey asks a random sample of 2500 adults in Ohio if they support an increase in the state sales tax from 5.25% to 5.50%, with the additional revenue going to education. Let X denote the number in the sample that say they support the increase. Suppose that 30% of all adults in Ohio support the increase.
9. The standard deviation of X is
a. 22.91.
b. 27.39.
c. 5255.
d. 750.
10. The probability that X is at least 800 is
a. less than 0.0001.
b. about 0.015.
c. 0.025.
d. 0.05.
Answer:
Step-by-step explanation:
a) Total number of people surveyed, n = 2500
Let X denote the number in the sample that say they support the increase. If 30% of all adults in Ohio support the increase, it means that the percentage of all adults in Ohio that did not support the increase is
100 - 30 = 70%
This is a binomial probability because there are only two possible outcomes. Therefore,
Probability of success, p = 30/100 = 0.3
Probability of failure, q = 1 - p = 1 - 0.3
q = 0.7
Standard deviation = √npq
Standard deviation = √(2500 × 0.3 × 0.7) = 22.91
b) The probability that x is at least 800 is expressed as
P(x ≥ 800)
We would determine the probability by using the binomial probability calculator. Therefore,
P(x ≥ 800) = 0.01577
b. about 0.015.
What is the median of the following numbers: 120, 35, 42, 119, 120.5, 99, 72 ? *
Answer:
the median is 99
Step-by-step explanation:
(lowest) 35, 42, 72, 99, 119, 120, 120.5 (highest)
the median is the middle #
the middle # is 99
need help
ASAP will give 20 points!
Answer:
141
Step-by-step explanation:
24 (triangle) + 117 (trapezoid)
Answer:
141
Step-by-step explanation:
Trapezium + triangle
[½ × (16+10) × 9] + [½ × 6 × 8]
117 + 24
141 in²
please help!!!!!!!please and thank you
Answer:
The simplified expression is 5b
The unit of metric measurement used
when measuring the width of your
pencil point.
A. Milliliters
B. Milligrams
C. Millimeters
D. Centimeters
The unit of metric measurement used
when measuring the width of your
pencil point is millimeters
No es sano que los perros tengan en la sangre niveles altos de colesterol. Debido a que una dieta rica en grasas saturadas incrementa el nivel de colesterol, es plausible que los perros domésticos tengan niveles más altos que los perros que pertenecen a una clínica de investigación veterinaria. En consecuencia, los niveles de colesterol “normales” basados en los perros de la clínica pueden ser engañosos. Una clínica comparó perros sanos de su propiedad con perros sanos llevados a la clínica para ser esterilizados. Los estadísticos de resumen de los niveles de colesterol en la sangre (en miligramos por decilitro de sangre) son los siguientes: GRUPO N PROMEDIO S Perros domésticos 26 n= promedio=193 s=68 Perros de la clínica n=23 promedio=174 s=44
Answer:
Le sskua pee yu kenij goj qwe quack zen xids bwebwe gugugaga
which fraction is equal to 1/28?
Answer: 2/56
Explanation: I doubled both sides
Alyssa scored the following scores on her math tests: 92, 98, 89, 85, 91 What is the mean of her test scores? *
10 points
A. 92
B. 91
C. 5
Answer:
B. 91
Step-by-step explanation:
When you add all the test scores you get 455, then you have to divide by how many test scores there were (5) and then you get 91.
Hope this helped! Have a good day!
what is 1000 + 903 efwkfhawrjkarlvkjvheargjdvbejeqbgjvkdsfbwrilcjeabjesbwelvkjabvwelrgkjahfhfwahfsaldkjfasdjfhsakdflsadjfshadjkfsahsaduhfaewsfhiaowsadlkffhsdflksfahflksadfsalslkfdlahsfaweiofwahfesdfdsakfsak;falskhfdsadfojanefwuhrohafdhsd,fesuighfdsdhasfl;sfkdsdguegreffjsafakslfdsdfhfdsaklfawfieow
Answer:
1903
Step-by-step explanation:
Answer:
the answer is 1903
Step-by-step explanation:
Find the value of x. Will mark brainliest.
Answer:
3.625
Step-by-step explanation:
Line segment IK = 35.
This is a parallelogram, in which:
LJ is a line bisector of IK; line Imidpoint = line segment kmidpoint.
IK = (4x + 3) + (4x + 3)
35 = (4x + 3) + (4x + 3)
Simplify. Combine like terms:
35 = 8x + 6
Simplify. Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.
PEMDAS =
Parenthesis
Exponents & Roots
Multiplication
Division
Addition
Subtraction.
First, subtract 6 from both sides:
35 (-6) = 8x + 6 (-6)
35 - 6 = 8x
29 = 8x
Divide 8 from both sides:
(29)/8 = (8x)/8
x = 29/8
x = 3.625
3.625 is your answer.
~
Answer:
X= 8
The reason why X equals 8 is because the gave you the measurement of points I and K. They have created an expression to find points I and K and all they ask you to do is find the value of x.
To find the value of x, think about the measurement of points I and K. The measurements of point I and K equals 35. So we have to substitute a number for x that would make the expression equal 35. This is how I did it, so I thought 4 times what would get me close to 35. Then 4*8 came to my head and that automatically equals 32 and then when you add the three you get 35!
I hope I've helped!
avocados cost $3 per pound. write and graph an equation in two variables that represents the cost of buying avocados.
pleasee hellpp asappp!!!
if possible, whoever answers this can you put a picture of what the graph would look like please and thank you :)
Answer:
y = 3x
Step-by-step explanation:
sorry cant do the graph
