Answer:
Step-by-step explanation:
BAR CHART
Hope this helps
plz mark as brainliest!!!!!!!
Two and three fifths of a number equals −26 . What is the number?
Answer:
-10
Step-by-step explanation
-26 x 2 3/5 = -10
-10 x 2 = -20
3/5 of -10 is -6
-20 - 6 = -26
The number is 10.
What is an Equation?An equation is a mathematical statement that is formed when two algebraic expressions are equated using an equal sign.
Let the number is n,
The equation formed from the statement is
(2 3/5 ) * n = -26
(13/5 ) * n =26
n = 26 * 5 / 13
n = 10
To know more about Equation
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Nick mowed about 5/8 of the school lawn yesterday. He mowed another 1/4 of the lawn this morning. How much is left to mow? *Write your answer as a decimal.
Answer:
1/8 of the lawn is left to mow. As a decimal this would be 0.125.
Step-by-step explanation:
Convert 1/4 to eighths, by multiplying the whole fraction by 2. The fraction would thus be 2/8. Add 5/8 and 2/8 and you know that he has mowed 7/8 of the yard, which means he now has 1/8 left to mow.
what are the solutions to the equation (x-6)(x+8)=0?
Answer:
x = 6, -8
Step-by-step explanation:
If (x - 6)(x + 8) = 0, that would imply that either (x - 6) or (x + 8) would equal zero. Using this, we can find that solving the two equations:
x - 6 = 0
and
x + 8 = 0
would yield the two solutions to the equation.
x - 6 = 0
Add 6 to both sides of the equation.
x = 6
So one of the solutions would be x = 6.
x + 8 = 0
Subtract 8 from both sides of the equation.
x = -8
So the other solution would be x = -8.
The two solutions are x = 6 and x = -8.
I hope you find my answer and explanation to be helpful. Happy studying.
Answer:
x = 6 or x = –8
Step-by-step explanation:
What are the zeros of the function g(x) = (x – 3) (x + 2) (x – 4)?
Answer:
x=3, x=-2, x=4
Step-by-step explanation:
You can tell because the x is just going to be the additive inverse of the already given number. I hope this helps!
Which graph shows a function with a range of all real numbers greater than or equal to –1?
Answer:
b
Step-by-step explanation:
edge2020
find the exact value of cos A in simplest radical form?
Answer:
cosA = 7/8
Step-by-step explanation:
cos∅ = adjacent over hypotenuse
cosA = 14/16
cosA = 7/8
PLEASE HELP IM IN A HURRY
What is the area of the figure composed of a parallelogram, a square, and a rectangle?
Answer:
The area of the figure composed of a parallelogram, a square and a rectangle is 126 in².
Step-by-step explanation:
Hope I could help!
Sarianna is saving up to but a pet lizard. The lizard costs $12.35, the food costs $8.40, and the cage costs $26. If she has $20,
how much more money does she need to save?
Answer:
26.75
Step-by-step explanation:
6. Find the value of x:
Answer:
Step-by-step explanation:
The lines are parallel.
Therefore
3x + 6 = 4x - 12 Add 12 to both sides
3x + 6 + 12 = 4x Combine
3x + 18 = 4x Subtract 3x from both sides.
18 = 4x - 3x
18 = x
Step-by-step explanation:
the ans is given.the ans is 18.
Mrs. Cook is a teacher whose salary is $23,125 for a 185-day school year. In Mrs. Cook's school district, substitute teachers are paid at a rate of $90 per day. If a substitute is paid to teach Mrs. Cook's class in her absence one day, how much less does the school district pay in salary by paying a substitute teacher instead of paying Mrs. Cook for that day? *
Answer:
$90
Step-by-step explanation:
Off course the school district will pay in salary by $90 less.
How do you break apart the factor 42 using place value?
Hey there!☺
Let's break apart 42.
The 4 is in the tens. The 2 is in the ones.
Place Value starting from Thousands
Thousands Hundreds Tens Ones
_________ ________ ____ _____
4 2
So this is how we break up numbers using place value.
Hope this helps!
The number can be broken apart from the factor 42 using the place value as 40 + 2 here 4 is in the tens place and 4 is in the one's place.
What is the number?A number is a mathematical entity that can be used to count, measure, or name things. For example, 1, 2, 56, etc. are the numbers.
It is given that:
The number is 42.
As we know,
The arithmetic operation can be defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has a basic four operators that is +, -, ×, and ÷.
42 = 40 + 2
42 = 4x10 + 2x1
Thus, the number can be broken apart from the factor 42 using the place value as 40 + 2 here 4 is in the tens place and 4 is in the one's place.
Learn more about the number here:
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A balloon flies at 250 ft above sea level. A fish swims at 50 ft below sea level. What is the difference between these elevations?
Answer:
300 ft
Step-by-step explanation:
250 + 50 = 300 ft
Since the fish is below water and the balloon is above water, you have to add them together to get the difference.
(I think. . .)
Which of the following is equal to 4 and 2 over 3 divided by 3 and 1 over 2?
Answer:
Step-by-step explanation:
4+2=6
6/3=2
3+1=4
4/2=2
2/2=1
what is
5x3 divided by 15 + 15 - 15
Answer:
5 × 3 divided by 15 + 15 - 15 = 1.
How many solutions exist for the system of equations in the graph?
One
Two
Three
Four
Answer:2
Step-by-step explanation:
It goes through two points
Answer:
b
Step-by-step explanation:
What is 630.5630.5630, point, 5 in words?
Answer:
630.56
Step-by-step explanation:
example 3.14159 if last 5 or later than 5 then add before number 1
like 3.1416 you can use this number too
Answer:
six hundred thirty and five tenths
Step-by-step explanation:
The sum of two consecutive integers is 125.find the two integers
Answer:
62 and 63
Step-by-step explanation:
125/2= 62.5 (Middle integer or mean of the 2 integers)
That means that the integers are 62 and 63
2. Amy opened a savings account with $152 dollars in the first month. After
the first month, Amy plans on depositing 20 into her account each month.
a. Complete the table showing the balance of her savings account over the course
of several months.
Month Account Balance
Use variable n to write expression
*Please provide a picture of the table next time*
152+ 20n
n is the number of months
after 5 months
152+ 20(5)
=252
after 10 months
152+20(10)
= 352
Each time you need to find the balance for the certain month, replace the n with the number of months.
Hope that helped
The Reviews editor for a certain scientific journal decides whether the review for any particular book should be short (1–2 pages), medium (3–4 pages), or long (5–6 pages). Data on recent reviews indicates that 50% of them are short, 30% are medium, and the other 20% are long. Reviews are submitted in either Word or LaTeX. For short reviews, 70% are in Word, whereas 50% of medium reviews are in Word and 30% of long reviews are in Word. Suppose a recent review is randomly selected.(a) What is the probability that the selected review was submitted in Word format?(b) If the selected review was submitted in Word format, what are the posterior probabilities of it being short, medium, or long? (Round your answers to three decimal places.)shortmediumlong
Answer:
The probability that the selected review was submitted in Word format is 0.56.
Step-by-step explanation:
We are given that Data on recent reviews indicates that 50% of them are short, 30% are medium, and the other 20% are long. Reviews are submitted in either Word or LaTeX. For short reviews, 70% are in Word, whereas 50% of medium reviews are in Word and 30% of long reviews are in Word.
Let the probability that there are short reviews = P(S) = 0.50
The probability that there are medium reviews = P(M) = 0.30
The probability that there are long reviews = P(L) = 0.20
Let W = event that the reviews are submitted in either Word or LaTeX
So, the probability that short reviews are submitted in Word = P(W/S) = 0.70
The probability that medium reviews are submitted in Word = P(W/M) = 0.50
The probability that long reviews are submitted in Word = P(W/L) = 0.30
(a) The probability that the selected review was submitted in Word format is given by = P(W)
P(W) = P(S) [tex]\times[/tex] P(W/S) + P(M) [tex]\times[/tex] P(W/M) + P(L) [tex]\times[/tex] P(W/L)
= (0.50 [tex]\times[/tex] 0.70) + (0.30 [tex]\times[/tex] 0.50) + (0.20 [tex]\times[/tex] 0.30)
= 0.35 + 0.15 + 0.06
= 0.56
Hence, the probability that the selected review was submitted in Word format is 0.56.
(b) Now, if the selected review was submitted in Word format, the posterior probabilities of it being short is given by = P(S/W)
P(S/W) = [tex]\frac{P(S) \times P(W/S)}{P(S) \times P(W/S)+P(M) \times P(W/M)+P(L) \times P(W/L)}[/tex]
= [tex]\frac{0.50\times 0.70}{0.50\times 0.70+0.30\times 0.50+0.20\times 0.30}[/tex]
= [tex]\frac{0.35}{0.56}[/tex] = 0.625
Similarly, if the selected review was submitted in Word format, the posterior probabilities of it being medium is given by = P(M/W)
P(M/W) = [tex]\frac{P(M) \times P(W/M)}{P(S) \times P(W/S)+P(M) \times P(W/M)+P(L) \times P(W/L)}[/tex]
= [tex]\frac{0.30\times 0.50}{0.50\times 0.70+0.30\times 0.50+0.20\times 0.30}[/tex]
= [tex]\frac{0.15}{0.56}[/tex] = 0.268
Also, if the selected review was submitted in Word format, the posterior probabilities of it being long is given by = P(L/W)
P(L/W) = [tex]\frac{P(L) \times P(W/L)}{P(S) \times P(W/S)+P(M) \times P(W/M)+P(L) \times P(W/L)}[/tex]
= [tex]\frac{0.20\times 0.30}{0.50\times 0.70+0.30\times 0.50+0.20\times 0.30}[/tex]
= [tex]\frac{0.06}{0.56}[/tex] = 0.107.
Several psychology majors conducted an experiment around campus, asking students to count backwards from 40 to 0 as fast as possible. From their findings, they concluded that out of every 15 students, only 6 could accurately count backwards in less than 15 seconds. They repeated this experiment with the professors. They discovered that their success rate was 140% of the students' success rate. From the list of participants, they randomly selected 10 students and 10 professors. The probability that 4 students who completed the task were selected is S and the probability that 4 professors who completed the task were selected is R. Find the absolute difference in S and R.
Answer:
Step-by-step explanation:
POINTS:
- Out of every 15 students, 6 were successful in the task.
- The professors' success rate is 140% of the students' success rate.
j
Can anyone please help
[tex]\text{Hi there! :)}[/tex]
[tex]\large\boxed{f'(2) = -\frac{16}{27} }[/tex]
[tex]f'(x) = \frac{(5 + x^{2} )(-2x) - (7 - x^{2} )(2x)}{(5+x^{2})^{2} } \\\\f'(x) = \frac{-10x-2x^{3}- 14x + 2x^{3} }{(5+x^{2})^{2} } \\\\f'(x) = \frac{-24x}{(5+x^{2})^{2} }\\\\ \text{Solve for the derivative at f'(2) using substitution:}\\\\f'(2) = \frac{-24(2)}{(5+2^{2})^{2} } \\\\f'(2) = \frac{-48}{81} \\\\\text{Simplify:}\\\\f'(2) = -\frac{16}{27}[/tex]
Answer:
1) [tex]f'(x)=-\frac{24x}{(5+x^2)^2}[/tex]
2) [tex]f'(2)=-\frac{16}{27}[/tex]
Step-by-step explanation:
So we have the function:
[tex]f(x)=\frac{7-x^2}{5+x^2}[/tex]
And we want to find f'(x).
To do so, we can use the quotient rule.
So, let's take the derivative of both sides:
[tex]\frac{d}{dx}[f(x)]=\frac{d}{dx}[\frac{7-x^2}{5+x^2}][/tex]
Remember that the quotient rule is:
[tex]\frac{d}{dx}[f/g]=\frac{f'g-fg'}{g^2}[/tex]
In our equation, f is (7-x^2) and g is (5+x^2).
So, using the quotient rule, our derivative f'(x) is:
[tex]f'(x)=\frac{\frac{d}{dx}[7-x^2](5+x^2)-(7-x^2)\frac{d}{dx}[5+x^2]}{(5+x^2)^2}[/tex]
Differentiate:
[tex]f'(x)=\frac{(-2x)(5+x^2)-(7-x^2)(2x)}{(5+x^2)^2}[/tex]
Simplify. Distribute in the numerator:
[tex]f'(x)=\frac{(-10x-2x^3)-(14x-2x^3)}{(5+x^2)^2}[/tex]
Distribute:
[tex]f'(x)=\frac{(-10x-2x^3)+(-14x+2x^3)}{(5+x^2)^2}[/tex]
The cubed terms cancel. This leaves:
[tex]f'(x)=\frac{(-10x)+(-14x)}{(5+x^2)^2}[/tex]
Add. So, our derivative is:
[tex]f'(x)=-\frac{24x}{(5+x^2)^2}[/tex]
To find f'(2), simply substitute 2 into our derivative. So:
[tex]f'(2)=-\frac{24(2)}{(5+(2)^2)^2}[/tex]
Multiply and square:
[tex]f'(2)=-\frac{48}{(5+4)^2}[/tex]
Add:
[tex]f'(2)=-\frac{48}{(9)^2}[/tex]
Square:
[tex]f'(2)=-\frac{48}{81}[/tex]
Reduce by 3:
[tex]f'(2)=-\frac{16}{27}[/tex]
And we're done!
3,090 would be represented using
cubes,
flats,
rods, and
units
Answer:
D. units
Step-by-step explanation:
A unit is the system in which a physical quantity is measured. It gives appropriate understanding of what physical quantity has been measured. All physical quantities have specific unit of measurements.
A unit can also represent the smallest part of a measurement. Example 1 unit, 2 units etc.
Since the unit of measurement is not indicated in the question, therefore 3, 090 would be represented using units. So that we have; 3, 090 units.
Write the sum of 5x2 + 2x - 10 and 2x2 + 6 as a polynomial in standard form.
Answer:
7x^2+2x-4
Step-by-step explanation:
a standard form is ax+by=c
5x^2 add 2x^2=7x^2 then -2x but when you have a -10 +6 you get -4 giving you the answer of 7x^2 +2x -4
Answer:
7x^2 + 2x - 4
Step-by-step explanation:
First, combine like terms: Combine 5x^2 and 2x^2, obtaining 7x^2. Include the 2x term (there is no like term for this one) and combine -10 + 6, obtaining -4.
Then the sum of these two polynomials is
7x^2 + 2x - 4
Note: Use " ^ " to indicate exponentiation.
Simpify 3^2 times 3^5
This is equivalent to 2187 if you were to evaluate 3^7 with a calculator.
============================================================
Explanation:
The rule you use is
[tex]a^b*a^c = a^{b+c}[/tex]
When we multiply exponential expressions with the same base, we add the exponents. The base stays the same.
So,
[tex]3^2*3^5 = 3^{2+5} = 3^7[/tex]
If the bases were different, then you cannot use this rule.
Answer:
Ok!
Step-by-step explanation:
So I’m guessing 3^2 means 3x3 basically! If I’m wrong pls correct! Anyways, so you wanna write the equation like so: (3^2) + (3^5). Next, do 3^2 which gets you 9. Then, do 3^5 which gets you 243. I know, it’s confusing haha. Now, add those two together & u get 252! There ya go, hoped it helped (:
Marisol is trying to decide which job to take. She is offered three jobs. The store manager has a salary of $32,500. The
shoe clerk sells an average of $140,000 and is paid $6.00 per hour, with a 15% commission. The department manager
gets paid $16.00 hour. All of the jobs require her to work 8 hours a day for 250 days. Which job will make her the
most money?
Answer:
I think it is the department manager
15×2×4
helppppppppppppppppp
plzzzzzzzzzzzzzzzzzzzz
Answer:
120
Step-by-step explanation:
We can break it up and then solve. 15*2 is 30. 30*4 is 120.
Answer:
120
Step-by-step explanation:
15*2=30
30*4=120
12x+6x^2(3x-2)-8x^2-7x
Answer:
x⋅(2x+1)⋅(2x+3)⋅(3x−2)
Step-by-step explanation:
Equation at the end of step 1
(((12•(x4))+(16•(x3)))-7x2)-6x
STEP
2
:
Equation at the end of step
2
:
(((12 • (x4)) + 24x3) - 7x2) - 6x
STEP
3
:
Equation at the end of step
3
:
(((22•3x4) + 24x3) - 7x2) - 6x
STEP
4
:
STEP
5
:
Pulling out like terms
5.1 Pull out like factors :
12x4 + 16x3 - 7x2 - 6x =
x • (12x3 + 16x2 - 7x - 6)
Checking for a perfect cube :
5.2 12x3 + 16x2 - 7x - 6 is not a perfect cube
1/2s=4s-21 please show steps
Answer:
s = 6
Step-by-step explanation:
Goal is to isolate the variable (s)
1/2s = 4s - 21
Subtract 4s from both sides - this cancels out the 4s on the right side and moves it to the left side
1/2s - 4s = -21
To add or subtract fractions, they must have a common denominator
Convert 4s to a fraction over 2
1/2s - 8/2s = -21
Subtract the numerators and keep the denominators
-7/2s = -21
Remember the goal is to isolate the variable
In order to get rid of the -7/2, we multiply by its reciprocal (which is -2/7)
What we do to one side, we must do to the other (this means multiply by -2/7 on both sides
-7/2s × -2/7 = -21 × -2/7
s = -21 × -2/7
Negative × negative = positive
s = 42/7
Divide 42 by 7
s = 6
Michael can paint 1/2 of a room every 1/3 of an hour. How many rooms can Michael paint in 1
hour?
Answer:
1.5 rooms
Step-by-step explanation:
1/2 x 3
YEET
Answer:
Yeet
Step-by-step explanation:
Yeet yeet yeet, yeet yeet. :D
Answer:
Yes, my kind sir.
Step-by-step explanation:
Too bad its not really lazer. if it is you put this in a vid.
