find last years salary if, after 6 percent raise, this years salary is $33,920
Last year's salary is $32000
Step-by-step explanation:
We will use the linear equations to solve the given problem
Let x be the last years salary
then
0.06x will be the raise in the salary
This year's salary is $33920
So,
[tex]x+0.06x=33920\\1.06x=33920[/tex]
Dividing both sides by 1.06
[tex]\frac{1.06x}{1.06}=\frac{33920}{1.06}\\=32000[/tex]
Hence,
Last year's salary is $32000
Keywords: Percentage, Linear equations
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Match each scientific notation with the appropriate number
Answer:
wheres the answer choices
Which of the following linear equations matches the graph?
y = 1/x
y = 1/3 x
y = 3x
y = -x
y = x
Answer:
y=x
Step-by-step explanation:
Answer:
y = x
because it's at 1y axsis, and 1x axsis
I need help!! Can you please make t the subject
Answer:
t=3
Step-by-step explanation:
Solve for x
-16 = 8x/5
x=-25 3/5
x=10
x=-10
Answer:
x = -10
Step-by-step explanation:
-16 = 8x/5
-80 = 8x
x = -10
Find the annual rate of interest. Principal = 4600 rupees, Period = 5 years, Total amount = 6440 rupees, Annual rate of interest = __%
The annual rate of interest per year is 8%
Solution:
Given:- Principal (p) = 4600 rupees, Time –Period (t) = 5 years, Total amount(A) = 6440 rupees
First we will calculate the Interest and then using formula of simple interest we will calculate the rate of interest
Interest = Amount – Principal
Interest = 6440 – 4600 = 1840
Now using the formula of simple Interest and on putting values we get,
[tex]\text {Simple Interest }=\frac{P \times R \times T}{100}[/tex]
Where "P" is the principal and "R" is the rate of interest per annum and "T" is the time period
[tex]1840=\frac{4600 \times R \times 5}{100}[/tex]
[tex]\begin{aligned} \mathrm{R} &=\frac{1840 \times 100}{4600 \times 5} \\\\ \mathrm{R} &=\frac{1840}{230} \\\\ \mathrm{R} &=8 \% \end{aligned}[/tex]
Hence, the required rate of interest per year is 8%
Answer:
The annual rate of interest per year is 8%
Solution:
Given:- Principal (p) = 4600 rupees, Time –Period (t) = 5 years, Total amount(A) = 6440 rupees
First we will calculate the Interest and then using formula of simple interest we will calculate the rate of interest
Interest = Amount – Principal
Interest = 6440 – 4600 = 1840
Now using the formula of simple Interest and on putting values we get,
Where "P" is the principal and "R" is the rate of interest per annum and "T" is the time period
Hence, the required rate of interest per year is 8%
Let me know if it is correct! Thank you. :)
Step-by-step explanation:
Evaluate -6+(-12) =(-6).
Cancelling out both the -6 we get 12=0 which is not true, hence the equation is incorrect.
Special right triangles: decimal answers
Answer:
h=11.3 and c=8(or 8.1 depending on what you do first)
Step-by-step explanation:
so we do the same thing like last time and 8√2 rounded is 11.3, and 7/√3, or 7√3/3 is 4( 4.04 gets rounded down). now we multiply by two because of the theorems and get 8(if this is wrong then try 8.1 because the answer differs depending on what you do first.)
Can someone help me answer this?
Given the function f(x)= x^2+7x+10 / x^2+9x+20
Describe where the function has a hole and how you found your answer.
We need to simplify the function by factoring the numerator and the denominator. Plug the excluded values into the simplified function to find the hole.
Answer:
The function f(x) has a hole at point x = - 5.
Step-by-step explanation:
We are given a function as
[tex]f(x) = \frac{x^{2} + 7x + 10}{x^{2} + 9x + 20}[/tex]
Now, we have to describe where the function has a hole.
Now, [tex]f(x) = \frac{x^{2} + 7x + 10}{x^{2} + 9x + 20}[/tex]
⇒ [tex]f(x) = \frac{(x + 5)(x + 2)}{(x + 4)(x + 5)}[/tex]
Therefore, the common factor of the numerator and denominator is (x + 5).
Now, (x + 5) = 0
⇒ x = - 5
Therefore, the function f(x) has a hole at point x = - 5. (Answer)
By factoring and simplifying the function f(x)=(x^2+7x+10)/(x^2+9x+20), we find a hole at x=-5. This is because -5 was an excluded value in the original function, but does not cause the denominator to be zero in the simplified function.
Explanation:The given function is f(x) = (x^2+7x+10) / (x^2+9x+20). To find where the function has a hole, we need to factor both the numerator and the denominator. We also must exclude any values of x that would cause the denominator to be zero as these are undefined in the function.
The numerator factors into (x+2)(x+5), and the denominator into (x+4)(x+5). If we simplify, the x+5 term will cancel out, leaving us with f(x) = (x+2)/(x+4).
Originally, x could not be equal to -4 or -5, as these would make the denominator zero. In the simplified function, only x=-4 causes the denominator to be zero. But since x=-5 was an excluded value in the original function, that indicates there is a 'hole' at x=-5 on the function.
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harvey the wonder hamster can run 3 1/6 km in 1/4 hour. harvey runs at a constant rate.
find his average speed in kilometers per hour.
___ kilometers per hour
please help lol.
Answer:
38/3 km per hour
Step-by-step explanation:
3 1/6=19/6
1/4=0.25
(19/6)*4=38/3
Mr. Martin’s math test, which is worth 100 points, has 29 problems. Each problem is worth either 5 points or 2 points. Let x be the number of questions worth 5 points and let y be the number of questions worth 2 points. x + y = 29, 5x + 2y = 100 How many problems of each point value are on the test?
$700 invested at 8% compounded quarterly after a period of 4 years
Answer:
$960.95
Step-by-step explanation:
The question is about finding the final amount after 4 years of a $700 investment with 8% interest, compounded quarterly. This can be solved using the compound interest formula.
Explanation:The subject of your question pertains to compound interest in mathematics. Given the parameters, we want to find the amount after 4 years when $700 is invested at an interest rate of 8%, compounded quarterly. To solve this, we can use the compound interest formula, A = P(1 + r/n)^(nt), where 'A' is the amount of money accumulated after n years, including interest, 'P' is the principal amount (the initial amount of money), 'r' is the annual interest rate (in decimal form), 't' is the time the money is invested for in years, and 'n' is the number of times that interest is compounded per year. Plugging the values in, we get A = $700(1 + 0.08/4)^(4*4) which gives us the total amount after 4 years.
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Death Valley, located in California, is the lowest place in North America. It is 282 feet below sea level, or -282 feet. Mount McKinley in Colorado is the highest place in North America. Its elevation is approximately -71.76 times the elevation of Death Valley. What is the approximate elevation of the Mount McKinley?
-20,236.32 feet
20,236.32 feet
-3.93 feet
3.93 feet
Answer:
20,236.32
Step-by-step explanation:
because (-282) * (-71.76) = 20,236.32
Answer:
20236.32 feet
Step-by-step explanation:
-282*-71.76=20236.32
Which fuction is positive for the entire interval [-3, -2 ]
Answer:
f(x) = |x| or f(x) = x² etc.
Step-by-step explanation:
There are several functions that gives positive value for entire interval [-3,-2].
Like the function, y = |x| , where if you put any negative value of x, the resulting output of the value of y is always positive. Therefore, for domain of [-3,-2] the range of the function will be [3,2]
Again, the function y = x², where if you put any negative number as a value of x, the corresponding value of y will be always positive.
Therefore, for domain of [-3,-2] the range of the function will be [9,4] (Answer)
8x4
3x4
4x6
10x4
4x5
4x3
4x3
I can't really give an explanation, since it's just multiplication, so here are the answers:
1. 32
2. 12
3. 24
4. 40
5. 20
6. 12
7. 12
7th grade math help thxs
Answer:
a is 7.5
b is 67.5
c is 100
d is let me think on d
Answer:
a is 7.5
b is 67.5
c is 100
d is for every 7.5
3 pounds of bananas cost 1.5. what is the constant of proportionality that relates the cost in dollars ,y, to the number of pounds of bananas ASAP
Answer:
$0.5
Step-by-step explanation:
formula ; y = kx
where ; y = $1.5
x = 3 pounds of bananas
k = constant of proportionality
Step 1. Do the equation based on the data given
y = kx
$1.5 = k3
Step 2. Compute the mathematical equation. Divide both sides by the coefficient of 3.
$1.5 = k3
3 3
k = .5
Answer; $0.5 is the constant of proportionality cost in dollars per pound of banana.
Answer:
0.25
Step-by-step explanation:
Have a nice day <3
Given that sin=2/5 and cos<0. Find the rest of the trigonometric functions
Answer:
[tex]\cos x=-\dfrac{\sqrt{21}}{5}\\ \\\tan x =-\dfrac{2}{\sqrt{21}}\\ \\\cot x=-\dfrac{\sqrt{21}}{2}[/tex]
Step-by-step explanation:
Given
[tex]\sin x=\dfrac{2}{5}\\ \\\cos x<0[/tex]
Use formula:
[tex]\cos^2x+\sin ^2x=1\\ \\\cos^2x+\left(\dfrac{2}{5}\right)^2=1\\ \\\cos^2x=1-\dfrac{4}{25}\\ \\cos^2x=\dfrac{21}{25}\\ \\\cos x=\pm \dfrac{\sqrt{21}}{5}[/tex]
Since [tex]\cos x<0,[/tex] then
[tex]\cos x=-\dfrac{\sqrt{21}}{5}[/tex]
By definition,
[tex]\tan x =\dfrac{\sin x}{\cos x}=\dfrac{\frac{2}{5}}{-\frac{\sqrt{21}}{5}}=-\dfrac{2}{\sqrt{21}}\\ \\ \\\cot x=\dfrac{1}{\tan x}=\dfrac{1}{-\frac{2}{\sqrt{21}}}=-\dfrac{\sqrt{21}}{2}[/tex]
If you could marry, anyone in the world. Who would it be?
Answer:
I would marry Ino from Naruto
Step-by-step explanation:
Plz mark brainliest
Answer:
my bestfriend jaheim
Step-by-step explanation:
write down in terms of n an expression for the nth term -7,-12,-17,-22,-27
The expression for the nth term of the given sequence -7, -12, -17, -22, -27 is -7 - 5(n-1).
Explanation:The given sequence is -7, -12, -17, -22, -27. In this sequence, each term is obtained by subtracting 5 from the previous term. So, we can write the expression for the nth term as:
-7 - 5(n-1)
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Debnil has 6 teaspoons of salt. The ratio of teaspoons to tablespoons is 3:1 How many teaspoons does Debnil have?
A. 1/18
B. 1/2
C. 2
D.18
This is an incomplete question, here is a complete question.
Debnil has 6 teaspoons of salt. The ratio of teaspoons to tablespoons is 3:1 How many tablespoons does Debnil have?
A. 1/18
B. 1/2
C. 2
D.18
Answer : The correct option is, (C) 2
Step-by-step explanation :
As we are give that Debnil has 6 teaspoons of salt.
The ratio of teaspoons to tablespoons is 3 : 1.
It means,
if he has 3 teaspoons then he has 1 tablespoons
if he has 1 teaspoons then he has [tex]\frac{1}{3}[/tex] tablespoons
So,
if he has 6 teaspoons then he has [tex]6\times \frac{1}{3}=2[/tex] tablespoons
Therefore, Debnil have 2 tablespoons of salt.
The number of tablespoons that debnil has is;
C: 2
Ratio ProportionWe are told that;
Number of teaspoons of salt = 6Ratio of teaspoons to tablespoons = 3:1Thus, if the total spoons is x. Then;
¾x = 6
Thus;
x = (4 × 6)/3
x = 8 spoons
Thus, number of tablespoons she has = 8 - 6 = 2
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What is the inverse of the function h(x) = 5/2x + 4
[tex]h^{-1}(x) = \frac{2x-8}{5}[/tex]
Step-by-step explanation:
Given function is:
[tex]h(x) = \frac{5}{2}x+4[/tex]
In order to find the inverse:
Replacing h(x) with y
[tex]y = \frac{5}{2}x+4[/tex]
Replacing x with y and y with x
[tex]x = \frac{5}{2}y+4[/tex]
Solving for y
[tex]x = \frac{5}{2}y+4\\x - 4 = \frac{5}{2}y+4-4\\x-4 = \frac{5}{2}y\\y = \frac{2}{5}(x-4)\\y = \frac{2x-8}{5}[/tex]
Replace y with h^(-1)(x)
[tex]h^{-1}(x) = \frac{2x-8}{5}[/tex]
Hence,
[tex]h^{-1}(x) = \frac{2x-8}{5}[/tex]
Keywords: Inverse, Functions
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Clare wants to mail a package that weighs 4 1/2 ponds what could be its volume in liters
Answer:
The volume in liters is 2.041165665 liter.
Step-by-step explanation:
Given : Clare wants to mail a package that weighs [tex]4\frac{1}{2}[/tex] pounds.
To find : What could be its volume in liters ?
Solution :
We know that,
Pound (lb) is a unit of Weight used in Standard system.
Liter (l) is a unit of Volume used in Metric system.
To convert 1 pound into liter is
1 pound (lb) = 0.45359237 liter (l)
[tex]4\frac{1}{2}[/tex] pounds in simpler fraction is [tex]\frac{9}{2}[/tex]
Converting into liter,
[tex]\frac{9}{2}[/tex] pound (lb)=[tex]\frac{9}{2}\times 0.45359237[/tex] liter (l)
[tex]\frac{9}{2}[/tex] pound (lb) = 2.041165665 liter (l).
Therefore, the volume in liters is 2.041165665 liter.
(5 x 2) + (5 x 4) = 5 x (2 + 4)
Which picture represents this equation?
A) A
B) B
C) C
D) D
Answer:
Step-by-step explanation:
Wheres the picture?
The equation (5 x 2) + (5 x 4) = 5 x (2 + 4) showcases the distributive property in mathematics where two different expressions yield the same result.
The equation (5 x 2) + (5 x 4) = 5 x (2 + 4) is a demonstration of the distributive property in mathematics.
(5 x 2) + (5 x 4) can be simplified as 10 + 20 = 30.
5 x (2 + 4) can be simplified as 5 x 6 = 30.
Hence, both sides of the equation result in the same value, displaying the equality of the expression.
olivia has read 143 pages of a 220 -pages novel find the percent
Answer:
65%
Step-by-step explanation:
Cross, multiply and divide method has saved my life with these problems, heres how to do it.
Set up like this:
143 x
------- = -------
220 100
Multiply 143 by 100, then divide that by 220.
x= 65, so she has read 65%
Final answer:
Olivia has read approximately 65% of her 220-page novel by reading 143 pages.
Explanation:
To calculate the percent of the novel that Olivia has read, we use the formula: (number of pages read ÷ total number of pages) × 100%. Olivia has read 143 pages of a 220-page novel. Therefore, the calculation is (143 ÷ 220) × 100%, which simplifies to approximately 65%.
The steps to solve the problem are given below:
Step 1: 143 / 220 = 0.65
Step 2: 0.65 x 100 = 65%
So, Olivia has read about 65% of the novel.
In a video game green gems are worth 5 points and blue gems are worth 10 points. Eric collects 25 gems and earned 160?points form his gems. Find how many green gems and how many blue gems Eric collected.
Eric collected 18 green gems and 7 blue gems.
Step-by-step explanation:
Let,
Green gems = x
Blue gems = y
One green gem = 5 points
One blue gem = 10 points
According to given statement;
x+y=25 Eqn 1
5x+10y=160 Eqn 2
Multiplying Eqn 1 by 5;
[tex]5(x+y=25)\\5x+5y=125\ \ \ Eqn\ 3[/tex]
Subtracting Eqn 3 from Eqn 2;
[tex](5x+10y)-(5x-5y)=160-125\\5x+10y-5x-5y=35\\5y=35[/tex]
Dividing both sides by 5;
[tex]\frac{5y}{5}=\frac{35}{5}\\y=7[/tex]
Putting y=7 in Eqn 1;
[tex]x+7=25\\x=25-7\\x=18[/tex]
Eric collected 18 green gems and 7 blue gems.
Keywords: linear equations, subtraction
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Eric collected 18 green gems and 7 blue gems. This conclusion is reached by forming and solving a system of linear equations based on the problem's conditions related to the total number of gems and their respective point values.
Explanation:This question deals with a system of equations, defined by the value of the gems and the total number of gems. Here, let's represent green gems as 'g' and blue gems as 'b'.
The two equations formed from the problem are as follows: g + b = 25 (since Eric collected 25 gems) and 5g + 10b = 160 (since green gems are worth 5 points each and blue ones 10, yielding a total score of 160).
To solve it, we need to isolate one of the variables: first, multiply the first equation by 5: 5g + 5b = 125. Then subtract this equation from the second equation, so we get 5b = 35, which simplifies to b = 7.
Substitute b = 7 into the first equation to get g = 25 - 7 = 18. Therefore, Eric collected 18 green gems and 7 blue gems.
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What are the next two terms in the sequence?
2, 14, 26, 38, ...
Answer:
50, 62
The drawing will help
Answer:
50, 62Step-by-step explanation:
[tex]a(1)=2\\\\a(2)=a(1)+12=2+12=14\\\\a(3)=a(2)+12=14+12=26\\\\a(4)=a(3)+12=26+12=38\\\\a(5)=a(4)+12=38+12=50\\\\a(5)=a(5)+12=50+12=62[/tex]
If you want the formula.
It's an arithmetic sequence with the first term 2 and common difference 12.
The explicit formula of an arithmetic sequence:
[tex]a(n)=a(1)+(n-1)d[/tex]
d - common difference
Substitute:
[tex]a(n)=2+(n-1)(12)[/tex] use the distributive property
[tex]a(n)=2+12n-12[/tex]
[tex]a(n)=12n-10[/tex]
The length of a rectangle is 3 cm greater than its width. the area of the rectangle is 180 cm². find the length and the width.
Answer:
L=15 W=12 15*12 = 180
Step-by-step explanation:
W*L = area
W*(W+3) = 180
Do the distributive
W^+3 W-180=0
Find 2 numbers that when multiplied ,the result is -180
and when added the result is 3
- 12* 15 = -180
-12 +15 = 3
Find the slope of the line that contains (3, -4) and (7, -2).
Answer:
The slope is 1/2.
Step-by-step explanation:
m=(-2-(-4))/(7-3)=(-2+4)/4=1/2
Erin loves to play sports! She has earned 333 tennis trophies, 444 basketball trophies, 777 soccer trophies, and 111 volleyball trophy.
What is the ratio of Erin's tennis trophies to soccer trophies?
The ratio of Erin's tennis trophies to soccer trophies is 3/7.
What are the ratio and proportion?The ratio is the division of the two numbers.
For example, a/b, where a will be the numerator and b will be the denominator.
Proportion is the relation of a variable with another. It could be direct or inverse.
As per the given,
She has earned 333 tennis trophies, 444 basketball trophies, 777 soccer trophies, and 111 volleyball trophies.
The ratio of tennis trophies to soccer = 333/777
3/7(111/111) = 3/7
Hence "The ratio of Erin's tennis trophies to soccer trophies is 3/7".
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