Answer:
11/20
Step-by-step explanation:
To solve for n, we need to isolate all the n variables in one side, of this equation. Then proceed the operations
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ITS NOT A SCAM I COULDN"TCOPY THE IMAGE
Reid earns $9.00 per hour painting furniture and has already earned $22.50. The number of hours, x, for which Reid painted can be found using the equation 22.50=9x.
How many hours did Reid paint?
Answer:
2.5 hours or 2 hours and 39 min
Step-by-step explanation:
22.50/9
answer this and ill give you brainliest
Meg conducted a survey of four school cafeterias to find the number of students who like sandwiches for lunch. The results of her survey are recorded in the table below:
School Cafeteria Survey
School Total Number of Students
in the Cafeteria Number of Students
Who Like Sandwiches
A 38 12
B 48 9
C 26 10
D 24 8
Which school has the greatest percentage of students who like sandwiches for lunch?
School A
School B
School C
School D
Answer:
B
Step-by-step explanation:
Hope this helped
Answer:
B Since it has the most and in the question it says which school has the greatest percent
Use GEMS to evaluate the expression when x=5
3x - (-2 + 4x)
PLEASE HELP!
Answer:
how to get gems?
Step-by-step explanation:
y − 18 = 6(2 − 3y + 10) + y
Solve for y
Answer: y = 5
Step-by-step explanation:
Let's solve your equation step-by-step.
y−18=6(2−3y+10)+y
Step 1: Simplify both sides of the equation.
y−18=6(2−3y+10)+y
y+−18=(6)(2)+(6)(−3y)+(6)(10)+y(Distribute)
y+−18=12+−18y+60+y
y−18=(−18y+y)+(12+60)(Combine Like Terms)
y−18=−17y+72
y−18=−17y+72
Step 2: Add 17y to both sides.
y−18+17y=−17y+72+17y
18y−18=72
Step 3: Add 18 to both sides.
18y−18+18=72+18
18y=90
Step 4: Divide both sides by 18.
18y 90
18 = 18
y = 5
PLS HELP I DONT KNOW THE ANSWERSSSS
Answer:
1 - proper fraction
2 - mixed number
3 - equivalent fractions
4 - improper fraction
5 - denominator
6 - numerator
Step-by-step explanation:
Answer:
1. proper fraction
2. mixed number
3. equivalent fraction
4. improper fraction
5. denominator
6. numerator
Step-by-step explanation:
A wealthy businessman invests $10,000 and expects a 6.62% rate of return annually. How
many years will it take the investment to reach $15,000 in value?
Answer:
3
Step-by-step explanation:
It would take.him.about 3 years
The table lists selected values of Sam's walking speed, in kilometers per hour (km/h), and his corresponding
pulse, in beats per minute (bpm). There is a linear relationship between Sam's speed, x, and his pulse, f(x).
Which of the following equations describes f(x)?
9514 1404 393
Answer:
(C) f(x) = 5x +57
Step-by-step explanation:
Heart rate increases as speed increases, so only equations with a positive x-coefficient are of interest. It is pretty easy to see that ...
f(x) = x+57
doesn't give ...
f(4) = 77
However, the other reasonable choice is ...
f(x) = 5x +57
which does give f(4) = 77.
4xy+16x≈+40 what is the answer...please hurry
Answer:
X = 10/(y-4)
Step-by-step explanation:
4X(y-4) = 40
X(y-4) = 10
X = 10/(y-4)
Write
3
8
as a decimal.
Enter
Copyright © 2003 - 2020 Acellus Corporation. All Rights Reserved.
Answer:
the answer is 0.375
Step-by-step explanation:
hope this helps
Point J is on line segment IK. Given JK = 2x, I J = 5x, and I K = x + 6,
determine the numerical length of JK.
2
Answer:
JK = 2Step-by-step explanation:
JK = 2x, I J = 5x, and I K = x + 6,
|<-------------- x + 6 ------------------->|
I____________J___________K
5x 2x
x + 6 = 5x + 2x
6 = 7x - x
6 = 6x
x = 6 / 6
x = 1
substitute x=1 to JK
JK = 2x
= 2(1)
= 2
Answer -
JK = 2x, I J = 5x, and I K = x + 6,
--------------------------------------------
x + 6 = 5x + 2x
6 = 6x
x = 6 / 6
x = 1
-------------------------------------------
make the x=1 to JK
JK = 2x
= 2(1)
= 2
What are the Factors of 40
Answer:
1, 2, 4, 5, 8, 10, 20, 40
Step-by-step explanation:
These number can all divide 40
Answer:
1 × 40 = 40.
2 × 20 = 40.
4 × 10 = 40.
5 × 8 = 40. Therefore, the factors in pairs are (1, 40), (2, 20), (4, 10) and (5, 8).
Step-by-step explanation:
These are the factors of 40
A person invests 2000 dollars in a bank. The bank pays 6.25% interest compounded semi-annually. To the nearest tenth of a year, how long must the person leave the money in the bank until it reaches 5900 dollars?
9514 1404 393
Answer:
17.6 years
Step-by-step explanation:
The compound interest formula is useful for figuring this out.
A = P(1 +r/n)^(nt) . . . . . interest r compounded n per year for t years
Filling in the given values and solving for t, we have ...
5900 = 2000(1 +.0625/2)^(2t)
2.95 = 1.03125^(2t) . . . . divide by 2000, simplify
log(2.95) = 2t×log(1.03125) . . . . take logarithms
t = log(2.95)/(2×log(1.03125) . . . . divide by the coefficient of t
t ≈ 17.6
The person must leave the money in the bank for 17.6 years.
Which of the following is the additive inverse of 1/2 ?
2
-2
-1/2
Answer:
-1/2
Step-by-step explanation:
It's the exact opposite. aka the negative version of the number.
Answer:
Step-by-step explanation:
the additive inverse of 1/2 is -1/2
-1/2 + 1/2 = 0
Jaime is 16 years older than Savannah. Ten years ago, the sum of their ages was 60. How old are they now?
Jaime is ____years old, and Savannah is ____ years old.
Answer:
Jaime is _48_years old, and Savannah is _32_ years old.
Step-by-step explanation:
Jaime is 16 years older than Savannah
Ten years ago, the sum of ages = 60.
(60-16)=22
Ten years ago, Jaime=22+16=38y but now Jaime is 48 (38+10)
Ten years ago, Savannah = 22y but now Savannah is 32y (22+10)
hope this helps
A duck population is modeled by
Pn=200⋅(1.02)n
where n is the number of years after the year 2010. How many ducks does the model predict for the year 2025? Round to the nearest whole number of ducks.
Answer:
3060 ducks
Step-by-step explanation:
There are 2 possibilities here. We can plug in 15 for n since 2025 is 15 years after 2010, or we can graph it and find the value.
If we do the first method, we have
[tex]P=200*1.02(15)\\P=3060[/tex]
So the population in 2025 is 3060 ducks.
We can check our answer by graphing on a calculator. If we enter the equation and then use calc>value we can see that when x=15, y=3060.
Hope this helps!
BEST ANSWER WILL BE MARKED BRAINIEST AND AWARDED HIGHEST POINTS\
Give an example of translation symmetry in nature, like when you take a walk outside. (do not use honey hives as an example.)
One example I've seen many times when I walk in the park, or just outside my house, is the pattern on the back of a moth. Here's an example of one. I hope this helps.
Improvements in which area would help reduce the possibility of damage to the environment when using uranium as a fuel?
more-efficient extraction techniques
better control of fusion reactions
stronger-pumping wells
thicker shielding around the reactor
Answer:
Improvements in which area would help reduce the possibility of damage to the environment when using uranium as a fuel?
A.) more-efficient extraction techniques
Step-by-step explanation:
To curb these detrimental effects, it is required to provide more-efficient extraction techniques when using uranium as a fuel.
What are environmental pollutants?Environmental pollutants are substances released into the natural environment that cause negative effects, such as damaging health or inflicting various sorts of damage.
Uranium mining has far-reaching consequences, polluting the environment with radioactive particles, radon gas, water-borne pollutants, and higher concentrations of radiation levels.
To curb these detrimental effects and to improve the possibility of damage caused to the environment, it is required to provide more-efficient extraction techniques when using uranium as a fuel.
Learn more about environmental pollutants here:
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Deshaun made 143 for 11 hours of work. At the same rate, how much would he make for 9 hours of work?
Answer:
117
Step-by-step explanation: 143\11=13
then multiply 13 by 9 and that equals 117
Answer:
143÷11=13 so you take that as how much money he makes an hour and multiply that with 9 which 13×9=117
evaluate 3x(x-2)/ 2x-1 when x=0
PLEASE HELP!!
4 Digit Lock *
Enter 4 digit number code with no spaces
WILL GIVE YOU BRAINLIEST IF CORRECT
Answer:
im guessing?
Step-by-step explanation:
each=4921
which ideas BEST retell the passage?
Answer: add a photo
Step-by-step explanation:
very easy and fast please answer ty
Answer:
8x+40 this is what i got
Step-by-step explanation:
Answer:
x=10
Step-by-step explanation:
If you eat 225% of a pizza, how many pizzas did you eat?
Answer:
Prolly 2 and 1/4 pizza but DON'T quote me on it :(
Step-by-step explanation:
Answer:
2 1/4 Pizzas
Step-by-step explanation:
If 1 pizza is 100% of a pizza you just do simple division to find the answer.
225 / 100 = 2.25 pizzas
A group of 59 randomly selected students have a mean score of 29.5 with a standard deviation of 5.2 on a placement test. What is the 90% confidence interval for the mean score, , of all students taking the test?
Answer:
29.5+/-1.11
= ( 28.39, 30.61)
Therefore, the 90% confidence interval (a,b) =( 28.39, 30.61)
Step-by-step explanation:
Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.
The confidence interval of a statistical data can be written as.
x+/-zr/√n
Given that;
Mean x = 29.5
Standard deviation r = 5.2
Number of samples n = 59
Confidence interval = 90%
z-value (at 90% confidence) = 1.645
Substituting the values we have;
29.5+/-1.645(5.2/√59)
29.5+/-1.645(0.676982337100)
29.5+/-1.113635944529
29.5+/-1.11
= ( 28.39, 30.61)
Therefore, the 90% confidence interval (a,b) =( 28.39, 30.61)
Triangles A B C, D E F, G H I, and J K L are shown. Angles A C B, D F E, H I G, and K L J are right angles. The length of side A C is 14 and the length of side C B is 20. The length of side E F is 8 and the length of F E is 10. The length of H I is 15 and the length of I G is 12. The length of K L is 10 and the length of L J is 7. The lengths of the hypotenuses are not given. Which pairs of triangles are similar? Check all that apply. △ABC ~ △DEF △DEF ~ △GHI △GHI ~ △ABC △GHI ~ △JKL △JKL ~ △ABC
Answer:
B) △DEF ~ △GHI
E) △JKL ~ △ABC
Step-by-step explanation:
i just did the assignment
The pairs of triangles are similar
△DEF ~ △GHI and △JKL ~ △ABC.
What is similarity ?If two triangles have an equal number of corresponding sides and an equal number of corresponding angles, then they are comparable. Similar figures are described as items with the same shape but varying sizes, such as two or more figures.
Given:
AC = 14
BC = 20
DF = 8
FE= 10
HI = 15
IG = 12
KL = 10
LJ = 7
As, In Right Triangle we can use Pythagoras theorem
AB = √14²+ 20² = 24.41
DE= √8²+10²= 12.8
HG= √15²+ 12² = 19.2
KJ= √10² + 7² = 12.2
Then, from the ratio of Corresponding sides we get
△DEF ~ △GHI and △JKL ~ △ABC.
Learn more about similarity here:
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An overcoat is $2,070.How much do you need to pay if you get a 15% discount?
Answer:
You need to pay $1,759.50 if you get a 15% discount.
Step-by-step explanation:
100%-15%=85%
0.85x2,070=$1,759.50
(b) Given one of the zeros of equation 2x³ - 23x + 78x +k=0 is 3/2
Find value k, hence,
solve the equation.
Answer:
k = -55 x - 2 x^3
Step-by-step explanation:
Solve for k:
2 x^3 + 55 x + k = 0
Hint: | Solve for k.
Subtract 2 x^3 + 55 x from both sides:
Answer: k = -55 x - 2 x^3
3/2 is not a Root of this equation - see below, those are the Roots/Zeros.
Solve for x:
2 x^3 + 55 x + k = 0
Divide both sides by 2:
x^3 + (55 x)/2 + k/2 = 0
Change coordinates by substituting x = y + λ/y, where λ is a constant value that will be determined later:
k/2 + 55/2 (y + λ/y) + (y + λ/y)^3 = 0
Multiply both sides by y^3 and collect in terms of y:
y^6 + y^4 (3 λ + 55/2) + (k y^3)/2 + y^2 (3 λ^2 + (55 λ)/2) + λ^3 = 0
Substitute λ = -55/6 and then z = y^3, yielding a quadratic equation in the variable z:
z^2 + (k z)/2 - 166375/216 = 0
Find the positive solution to the quadratic equation:
z = 1/36 (sqrt(3) sqrt(27 k^2 + 332750) - 9 k)
Substitute back for z = y^3:
y^3 = 1/36 (sqrt(3) sqrt(27 k^2 + 332750) - 9 k)
Taking cube roots gives (sqrt(3) sqrt(27 k^2 + 332750) - 9 k)^(1/3)/6^(2/3) times the third roots of unity:
y = (sqrt(3) sqrt(27 k^2 + 332750) - 9 k)^(1/3)/6^(2/3) or y = -((-1)^(1/3) (sqrt(3) sqrt(27 k^2 + 332750) - 9 k)^(1/3))/6^(2/3) or y = ((-1)^(2/3) (sqrt(3) sqrt(27 k^2 + 332750) - 9 k)^(1/3))/6^(2/3)
Substitute each value of y into x = y - 55/(6 y):
x = (sqrt(3) sqrt(27 k^2 + 332750) - 9 k)^(1/3)/6^(2/3) - 55/(6^(1/3) (sqrt(3) sqrt(27 k^2 + 332750) - 9 k)^(1/3)) or x = -(55 (-1)^(2/3))/(6^(1/3) (sqrt(3) sqrt(27 k^2 + 332750) - 9 k)^(1/3)) - ((-1)^(1/3) (sqrt(3) sqrt(27 k^2 + 332750) - 9 k)^(1/3))/6^(2/3) or x = (55 ((-1)/6)^(1/3))/(sqrt(3) sqrt(27 k^2 + 332750) - 9 k)^(1/3) + ((-1)^(2/3) (sqrt(3) sqrt(27 k^2 + 332750) - 9 k)^(1/3))/6^(2/3)
Bring each solution to a common denominator and simplify:
Answer: x = (6^(1/3) (sqrt(81 k^2 + 998250) - 9 k)^(2/3) - 55 6^(2/3))/(6 (sqrt(81 k^2 + 998250) - 9 k)^(1/3)) or x = -((-1)^(1/3) ((sqrt(81 k^2 + 998250) - 9 k)^(2/3) + 55 (-6)^(1/3)))/(6^(2/3) (sqrt(81 k^2 + 998250) - 9 k)^(1/3)) or x = ((-1)^(1/3) ((-1)^(1/3) (sqrt(81 k^2 + 998250) - 9 k)^(2/3) + 55 6^(1/3)))/(6^(2/3) (sqrt(81 k^2 + 998250) - 9 k)^(1/3))
How do you find lower class limit
Answer:
Its the upper limit and lower limit of the class
Someone help please!!!
Answer:
y intercept = -5
slope= 4
equation: y = 4x - 5
EXPLANATION:
FIRST, you must write the formula for a linear graph , which is y = m(x) + c
where y is any y component and x is it's corresponding x component , m is the gradient or slope and c is the constant or y intercept.
SOLUTION:
y = mx + c
finding the gradient (m)
m = y2 - y1
x2 - x1
=( (-1)-(-5) ) ÷ (1-0)
= -1+5 ÷ 1
= 4
Therefore, the slope is 4
finding the y intercept.
y = 4x + c
in the above equation, I substituted the value I had for the slope or the gradient or m.
SO NOW IM ABOUT TO FIND C
TO FIND C, YOU MUST FIRST PICK A CORRESPONDING Y AND X COMPONENT.
I CHOOSE MY Y = 3 and X = 2
Now I'm going to substitute those values into the formula.
(3) = 4(2) + C
since it's an equation with one variable, no need for simultaneous equations.
3 = 8 + c
3-8 = c
-5 = c
SO THATS HOW WE ARRIVED AT -5 AND 4.
WITH THAT, the equation of the line is y = 4x - 5.
I HOPE IT WAS HELPFUL.
Find measure of angle 1
Answer:
each one is a 30° angles in rhombus
Step-by-step explanation: