Answer:
$45 - (357.50 - 155) / 4.5
Step-by-step explanation:
First, we have to deduct the amount for parts ($155) by the total ($357.50). Once we find the difference ($202.5), we can now divide it by the amount of hours (4.5). This leaves us with the answer, $45.
A rowing team rowed 90 miles while going with the current in the same amount of time as it took to row 10 miles going against the current. The rate of the
current was 4 miles per hour. Find the rate of the rowing team in still water.
Answer:
5mph
Step-by-step explanation:
Let speed of boat in still water is s.
Distance proportional to speed
90/10 = (s+ 4)/(s - 4)
=> 9s - 36 = s + 4
=> 8s = 40
=> s= 5 mph
:-)
In parallelogram LMNP is shown at the right, m angle MLN=32 degrees, m angle NLP=x^2, m angle MNP=12x degrees, and angle MNP is an acute angle. Find m angle NLP. The picture of the shape is down below.
Answer: 16 degrees
Step-by-step explanation:
Simple maths question... i just don't understand how to do it
Answer:
Cut the prism into 2 parts like the picture below
Name the upper part A, and the lower part B
Calculate the volume of part A:
12 - 8 = 4 cm
4 * 5 * 6 = 120 [tex]cm^{3}[/tex]
Calculate the volume of part B:
15 * 8 * 6 = 720 [tex]cm^{3}[/tex]
Volume of the whole prism:
Volume of part A + volume of part B
120 + 720 = 840 [tex]cm^{3}[/tex]
Answer:840 cm squared
Step-by-step explanation:
4/5 to 3/5 percent of decrease
Which expression is equivalent to n + n - 0.18n? *
4 points
A) 1.18n
B) 1.82n
C) n - 0.18
D) 2n - 0.82
Answer:
b) 1.82n
Step-by-step explanation:
n + n - 0.18n
2n - 0.18n (combine like terms)
1.82n
Hope this helps!
i love mathhhhhhhhhhhhhhhhh
Explain Exponential growth and decay?
Answer:
Exponential growth is a mathematical development based on an exponential function that grows indefinitely. Exponential decay occurs in mathematical functions where the rate of change decreases and must thus reach a limit, which is the horizontal asymptote of an exponential function.
Please answer with steps
|3+5x|
----------- =4
9
Answer:
x=4.5, 36/9
step by step explanation: First we find what 4 wholes is (36) and than we see what we are multiplying x by (8) to solve for x we divide 8 by 36 you should get 4.5 now we plug the number into the eqation to see if we were correct.
Zalia meets her friend at the science museum to see a special exhibition. The admission to the museum is $12. 50 per person plus tax. Zalia pays for herself and her friend. They have lunch at the museum’s cafe. Zalia has a sandwich for $5. 95, an apple for $1. 25 and a drink for $1. 69. She is charged tax and also tips her server 15%. If tax is 7. 25%, how much did Zalia pay all total for her day at the science museum? a. $41. 43 b. $37. 68 c. $36. 35 d. $24. 27 Please select the best answer from the choices provided A B C D.
Zalia paid all total for her day at the science museum is $41.43 including all taxes and tips and other expenses.
It is given that
Admission to the museum = $12.50 per person
Number of persons= 2
Sandwich charge = $5.95
Apple charge = $1.25
Drink charge = $1.69
Tax rate = 7.25%
Tip = 15%
What is the percentage?The percentage is value per hundred
Total amount without tax and tip(a)= 12.50*2+5.95+1.25+1.69 = $33.89
Tax(b) = 7.25% of $33.89 = 7.25*33.89/1000= $2.457025
Tip(c) = 15% of $33.89 = 15*33.89/100 = $5.0835
Net amount = a+b+c = $41.43
Therefore, Zalia paid all total for her day at the science museum is $41.43
To get more about percentage visit to:
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Math help please show work
Step-by-step explanation:
8). 5 ft² into squared Inches:
=> since 1 ft² = 144 in²
=> 5x144
=> 720 in²
9). 16 000 cm² to m²:
=> since 1 m²= 10 000 cm²
=> 16 000 ÷ 10 000
=> 1.6 m²
10). 90 km/h to m/h
=> since 1000 m= 1 km
=> 90x1000
=> 90 000 m/h
11). 30 m/s to m/min
=> since 60 s= 1 min
=> 30÷60
=> 0.5 m/min
12). 15 rpm into rps
=> since 1 min= 60 s
=> 15x60
=> 900 rps
11 Triangle HJK is similar to triangle LMN.
H
11.25 cm
7.5 cm
4.5 cm
K
6 cm
9 cm
Which proportion can be used to calculate the length of LM in centimeters?
A
7.5
11.25
LM
4.5
LM
B
6
7.5
С
11.25
LM
4.5
7.5
D
9
LM
6
4.5
The length of side LM in the triangle LMN is 6.75 cm.
Similar figuresTwo figures are said to be similar if they are of the same shape and the ratio of their corresponding sides are in the same proportion.
From the diagram:
LM / HJ = JK / MN
LM / 4.5 = 9 / 6
LM = 6.75 cm
The length of side LM in the triangle LMN is 6.75 cm.
Find out more on similar figures at: https://brainly.com/question/26173060
Answer:
9/6 = LM/4.5
Epxlanation:
I go to K-12 and I did the test
Determine the center and radius of the following circle equation
We will see that this circle is centered at the point (-5, -49) and has a radius of 1.
How to work with the general circle equation?
For a circle of radius R centered at the point (a, b), the equation is:
(x - a)^2 + (y - b)^2 = R^2
In this case, we have:
x^2 + y^2 + 10x + 14y + 73 = 0
We can rewrite this as:
(x^2 + 10x) + (y^2 + 14y) + 73 = 0
(x^2 + 2*5*x + 25) + (y^2 + 2*7*y + 49) - 25 - 49 + 73 = 0
(x + 5)^2 + (y + 49)^2 -74 + 73 = 0
(x + 5)^2 + (y + 49)^2 = 1
So we have a circle centered at the point (-5, -49) with a radius equal to 1.
If you want to learn more about circles, you can read:
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PLEASE HELPP ** attachmeents provided
Answer:
the answer is A
Step-by-step explanation:
hope it helps ♡
Please help me I will give
BRAINLY
FIVE STARS
and a THANKS
Answer:
Graph 7 [tex]\frac{1}{2}[/tex]
Step-by-step explanation:
We need to make [tex]\frac{15}{2}[/tex] a mixed number instead of an improper fraction.To do this, divide 15 by 2. This would get us 7 [tex]\frac{1}{2}[/tex].I believe you are able to graph 7 [tex]\frac{1}{2}[/tex] on the small line right below the 8.If I am incorrect in my reasoning, please let me know so that I can plan better for my future answers. Have an amazing day.
What is the least number of full cylindrical containers needed to completely fill the fish tank?
(look at picture)
Answer:
31 cylinders
Step-by-step explanation:
Hello!
Step 1Let's first find how much water is held by the cylinder. To find this, we must find the volume (amount of space it takes up) of the cylinder
[tex]V = \pi r^ * h\\\\V = \pi (6/2)^2*8\\\\V = \pi* 3^2*8\\\\V = \pi* 9*8\\\\V = 72\pi[/tex]
Step 2Now let's find the volume of the rectangular prism.
[tex]V = 24*24*12\\\\\\V = 6912[/tex]
Step 3Now, let's divide the Volume of the fish tank by the cylinder:
[tex]6912 / 72\pi\\\\\\\text{Approx } 30.58\\ = \text{Approx 31 cylinders}[/tex]
Because we can't use half full cylinder, we round up to the nearest whole number: 31
Answer:
31 cylinder containers are needed to completely fill the fish tank.
Step-by-step explanation:
The stuffs required to solve this question:
Volume of cylinder = πr²hVolume of rectangular prism = lbhWhere r is radius, h is height, l is length and b is breadth. So, now just use these formulae and solve the question.
A cylinder container is given whose height is 8 inches and diameter is 6 inches. We are aware about the fact that radius is half of diameter. So, the radius of the cylindrical container is 3 inches.
Volume of cylindrical container = π × (3)² × (8)
Volume = 72π or 226 (approx.)
Similarly, a rectangular prism is provided whose length, breadth and height is 24, 24 and 12 inches respectively.
Volume of rectangular prism = 24 × 24 × 12
Volume = 6912
'n' is the number of cylindrical containers required to fill the fish tank. So,
→ n = Volume of rectangular prism/Volume of cylindrical container
→ n = 6912/226 = 30.58
→ n = 31 (approx.)
Can somebody help with this question i attached a screen shot of the question and what it's asking for.
By selling an exhaust fan for Rs. 1470, a man gains profit of 1/6 of its cost price. Find its cost price.
Answer:
₹245 is the cost
Step-by-step explanation:
Given:
Cost of the fan = ₹1470
1/6th = 1470/1 × 1/6
(do not cross multiply and simplify)
= ₹245
Answer:
Rs 1260
Step-by-step explanation:
let x be the cost price , then
x + [tex]\frac{1}{6}[/tex] x = 1470 , that is
[tex]\frac{7}{6}[/tex] x = 1470 ( multiply both sides by 6 to clear the fraction )
7x = 8820 ( divide both sides by 7 )
x = 1260
The cost price was Rs 1260
Each 1/2 inch on a scale model represents an actual length of 1/6 of a yard.
What length on the model represents 1 yard?
1 1/2 inch
2/3 inches
2 inches
3 inches
Answer:
3 inches
Step-by-step explanation:
Hello!
We can set up a proportion: [tex]\frac{\frac{1}{2}}{\frac16}} = \frac{x}{1}[/tex]
(Check the last answer for information on setting up proportions)
Solve:
Cross multiply the terms:1 yard in real life is 3 inches on the model.
1 yard represent:
1/2/(1/6)1/2(6)3infind the range of the function y= 9x-2, where x>-2
Answer:The given function is .Minimum or maximum value:At the extremum (maximum or minimum) value, the function will have zero slope. So, differentiate the given function once and equate it to zero to get the extremum point.dy/dx=0Now, check whether the point x=0 is corresponding to the maximum value or minimum value by differentiating the function twice,As for all value of x, so x=0 is the point corresponding to minima.Put x=0 in the given function to get the minimum value.Domain and range:The function defined for all the values of the independent variable, x.So, the domain is .The range of the function is the possible value of y.The minimum value, for x=0, is y=7.The maximum value, as .Hence the range of the function is .The value of x for which the function is increasing and decreasing:If the slope of the function is negative than the function is decreasing, soThen, from equation (i), the value of x for which dy/dx<0,18x<0Hence, the function is decreasing for .While if the slope of the function is positive than the function is increasing, soThen, from equation (i), the value of x for which dy/dx<0,18x>0Hence, the function is increasing for
Step-by-step explanation:hope this helps
Riley, a child psychologist, claims that for all samples of size 40 from the population of infant boys and all samples of size 40 of newborn girls, the mean of the sampling distribution of the difference in sample means (boys minus girls) is 0.2 month. Is Riley correct
Using subtraction of normal variables, it is found that Riley is not correct, as the mean is of 8 - 8 = 0.
What is the distribution of the subtraction of normal variables?The mean is the subtraction of the means, while the standard deviation is the square root of the sum of the variances.
Researching this problem on the internet, it is found that, for both samples, the mean is of 8, hence:
8 - 8 = 0.
Thus, Riley is not correct.
More can be learned about the subtraction of normal variables at https://brainly.com/question/14397951
circumference and area
To find the area of a circle: [tex]\pi r^2[/tex]
To find the circumference of a circle: [tex]\pi *d[/tex] or [tex]2\pi r[/tex]
The image attached below has more equations for circles.
Hope this helps! Please let me know if you need more help, or if you think my answer is incorrect. Brainliest would be MUCH appreciated. Have a great day!
Stay Brainy!
-[tex]Kallmekris[/tex]
What is the value of x? Round to the nearest tenth.
Answer:
4.8
Step-by-step explanation:
[tex]Cos \ 64 =\dfrac{adjacent \ side}{hypotenuse}\\\\0.4384 =\dfrac{x}{11}\\\\\\0.4384*11=x[/tex]
x = 4.82
x = 4.8
Factor completely 3x2 − x 5. Prime (3x 1)(x − 5) (3x − 1)(x 5) (x 1)(3x − 5).
Factorization is writing the expression in terms of multiplication of its factors. The given expression is prime(option A), thus, no factors.
What are prime polynomials?Those polynomials with integer coefficients that cannot be factored further, with factors of lower degree and integer coefficients are called prime polynomial.
(it is necessary that no factors exists having their coefficients are still integers and they're of lower degree)
How to find the solution to a standard quadratic equation?Suppose the given quadratic equation is
[tex]ax^2 + bx + c = 0[/tex]
Then its solutions are given as
[tex]x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a}[/tex]
Finding the roots of [tex]3x^2 - x + 5 =0[/tex], we get:
[tex]x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a} = \dfrac{1 \pm \sqrt{(-1)^2 - 4\times 5 \times 3}}{2 \times 3} = \dfrac{1 \pm \sqrt{1-60}}{6}[/tex]
Its square root is not real(if not using complex numbers, then its solution doesn't exist, making the roots non-real, and thus, polynomial not being able to get factorized. )
Learn more about prime polynomials here:
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Last month the cost of using the air pump at a garage was 20p.
This month the cost of using the air pump is 50p.
Tom says,
"50 = 20 = 2. 5 so the cost of using the air pump has increased by 250%"
(a) Is Tom correct?
Explain your answer.
Answer:
Tom is incorrect
The cost of using the air pump has increased by 150%
Step-by-step explanation:
Tom is incorrect
percent change = [ (difference between initial and final value) ÷ initial value] × 100
⇒ [ (50 - 20) ÷ 20) × 100 = 150%
Therefore, the cost of using the air pump has increased by 150%
Algerbra one slope intercept form
Answer:
y=x+5
Step-by-step explanation:
y-y1=m(x-x1) POINT-SLOPE FORM
Plug in your point and slope
y-3=1(x+2) (The signs flip because of the negative)
y-3=x+2 (SIMPLIFY)
y=x+5 (Move the three. It is now slope int form)
You can check by plugging in -2 for x, and get 3 for y. (it works)
Which of the following angle measures represents an acute angle?
15
163
90
180
Answer:
15
Step-by-step explanation:
acute is an angle smaller than 90 degrees
[tex] \huge{ \rm{Question:}}[/tex]
Which of the following angle measures represents an acute angle?
15
163
90
180
[tex] \huge{ \rm{Answer:}}[/tex]
15Step-by-step explanation:
acute angles measures less than 90 degrees
HOPE THIS HELPS^^
pls help asap tysm 3
Answer:
I'm pretty sure the answer is 0.45. I got this by dividing 1.35 by 3 which gave me 0.45. And to check it, I multiplied 0.45 by 3, snice the formula for area is multiplying.
Factor completely 9x3 36x2 − x − 4. (3x 4)(3x − 4)(x 1) (3x 1)(3x − 1)(x 4) (9x2 − 1)(x 4) (3x 1)(3x − 1)(x − 4).
The factor of the provided polynomial after the factorization process are similar to option B, which is
[tex](x+4)(3x+1)(3x-1)[/tex]
How to find the factor of polynomial?The factor of a polynomial is the terms in linear or equation form, which are when multiplied together, give the original polynomial equation as result.
Find these factors by taking out the common factors.
The given polynomial equation in the problem is,
[tex]9x^3 +36x^2 - x - 4[/tex]
The above equation has the unknown variable x and the highest power of this unknown variable is 3.
Take out the highest common factor 9x², which can divide each term of the first two terms of equation (9x³, 36x²). Thus,
[tex]9x^2(x +4) - x - 4[/tex]
Take out the highest common factor -1 from the second two terms as,
[tex]9x^2(x +4) -1( x + 4)[/tex]
Now take out the common group (x+4) as,
[tex](x +4) ( 9x^2 -1)[/tex]
The second group can be rewritten using the difference of square formula as,
[tex](x +4) ( (3x)^2 -1^2)\\(x+4)(3x+1)(3x-1)[/tex]
Thus, the factor of the provided polynomial after the factorization process are similar to option B, which is
[tex](x+4)(3x+1)(3x-1)[/tex]
Learn more about factor of polynomial here;
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The Brown family had cereal for breakfast. *Before breakfast there was 3/4 gallon of milk. *The Brown's drank 1/2 of their milk at breakfast. How many gallons of milk did the Brown family use for breakfast?
Answer:
3/8 gallon
Step-by-step explanation:
They drink 1/2 of their milk at breakfast => it means they drank 1/2 of 3/4 gallon of milk.
So, they drank : 3/4 x 1/2 = 3/8 gallon of milk.
I need help with eight and nine you are to multiply the binominaals using the horizontal format
Answer:
8. [tex]15m^2-31m+10\\[/tex]
9. [tex]x^2y^2z^2+2xyz-3[/tex]
Step-by-step explanation:
[tex](a+b)(c+d)=ac+ad+bc+bd\\(3m-5)(5m-2)=3m*5m+3m(-2)-5*5m(-2)\\=3m*5m+3m(-2)-5*5m(-2)\\=15m^2-31m+10[/tex]
^#8^
[tex](xyz+3)(xyz-1)=xyzxyz+xyz(-1)+3xyz+3(-1)\\=xyzxyz+xyz(-1)+3xyz+3(-1)\\=x^2y^2z^2+2xyz-3[/tex]
^#9^
