Answer: False, Step-by-step explanation: Genuine mechanical benefit and ideal mechanical benefit are not equivalent. Valid. Work yield can never be more prominent than work input.
Evaluate 3xy²-y³ for x=-1 and y=2.
help.
Step-by-step explanation:
=3xy²-y³
=3(-1)(2)²-(2)³
=3(-1)(4)-(8)
= -12-8
= -20
hope it helps.
Miki already knew 4 appetizer recipes before starting culinary school, and she will learn 1 new appetizer recipe during each week of school. Write an equation that shows the relationship between the number of weeks x and the number of appetizer recipes y.
Answer:
y = 4 + x
Step-by-step explanation:
Appetizer recipe Miki knows already = 4
Appetizer recipe learnt per week = 1
x = number of weeks
y = total number of appetizer recipes Miki knows
Equation that shows the relationship between the number of weeks x and the number of appetizer recipes y
y = 4 + x
help please!! The measures of the angles of a triangle are shown in the figure below. solve for x
9514 1404 393
Answer:
x = 33
Step-by-step explanation:
The angles are complementary.
x° = 90° -57°
x = 33
Rachel rode her bike 3(3/4) times on a trail around a lake that is 6 miles long. Which statement is true?
Answer:
beats me
Step-by-step explanation:
ask urself
Eriasia wanted to put down new tile in her bathroom. Her bathroom had a width of 10 ft and a width of 9 feet. How many square feet of tile should she buy
Answer:
90 ft²
Step-by-step explanation:
Length of her bathroom = 10 ft
Width of her bathroom = 9 ft
Area of Eriasia bathroom = length × width
= 10 ft × 9 ft
= 90 ft²
Area of Eriasia bathroom = 90 ft²
Eriasia should buy 90 square feet of tile
HELP ASAP
Use the pictures below to answer the question.
In order for a substance to move from A to B what has to occur?
A.
the substance must heat up and release energy
B.
the substance must heat up and absorb energy
C.
the substance must cool down and release energy
D.
the substance must undergo cool down and absorb energy
Answer:B
Step-by-step explanation:
From solid to liquid, a substance must heat up and absorb energy. This is like ice absorbing heat and becoming water
You are investing $4000 with a 2.5% nominal interest; compare what happens if the interest is compounded annually, quarterly, or continuously for 20 years. 1. Find the value of each of the three accounts after 20 years. Annually Quarterly Continuously
Which of the following are written in point-slope
form?
a) y + 2 = -9(x + 3)
b) y - 7 = 5(x + 1)
c) x - y = -3
d) y = -x +6
Answer:
y + 2 = -9(x + 3) and y - 7 = 5(x + 1)
Step-by-step explanation:
[tex]\text{Point-Slope form is:}\\\\y-y_1=m(x-x_1)\\\\\text{m - slope}\\\\(x_1,y_1) \text{ - a point}[/tex]
----------------------------------------
[tex]\text{Options A and B are written in point-slope form.}\\\\\\y+2 =-9(x+3)\\\\\text{The slope is -9 and the point used is (-3, -2).}\\\\\\y-7=5(x+1)\\\\\text{The slope is 5 and the point used is (-1, 7).}[/tex]
-----------------------------------------
[tex]\text{Option C is written in Standard Form.}\\\\Ax+By=C\\\\\\\text{Option D is written in Slope-Intercept Form.}\\\\y=mx+b\\\\\text {m - slope}\\\\\text{b - y-intercept}[/tex]
Hope this helps.
pls help for #9! whats the area of the shaded region ?
Answer:
21.5
Step-by-step explanation:
square is 10x10 = 100
circle is A=πr2=π·5²≈78.54
100-78.54 = 21.46 = 21.5
Answer:
21.5 sq cm
Step-by-step explanation:
Area of Square:
A= LXW= 10x10= 100 sq cm
Area of Circle=
A=πr²
Radius= D/2= 10/2= 5 cm
A=3.14(5²)
A=3.14(25)= 78.5 sq cm
Shaded Region= 100-78.5= 21.5
The area of the shaded region is 21.5 sq cm.
there are 30 cities in a country. Each city has 4 highways coming out of it. How many highways connecting 2 cities are there in this country?
Answer:
29
Step-by-step explanation:
There would be 29 highways connecting 2 cities
ava gathered data about the age of runners and the time it took them to complete a 5K race and half marathon. Her data is displayed in the given scatter plots
Based on the information provided by the table, it can be inferred that Running the half marathon took more than double the time than running the 5K. (option C)
How to read the graph?The graphs shown relate the time and age of athletes who ran 5k and half marathon.
The first graph shows the relationship in 5k, in which all the athletes, regardless of their age, managed to complete the test between 20 and 30 minutes.
The second graph shows the relationship in the half marathon, in which the younger runners completed the test in less time (80 minutes) than the older athletes (140 minutes).
According to this information, it can be inferred that the athletes took more than twice the time used in the 5k race to complete the half marathon (option C)
Note: This question is incomplete because the graph and the options are missing. Here are the options and the graph.
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Plz help I’ll give brainliest
Answer:
1) not possible 2)f(x)=-2y+2 3)4
Step-by-step explanation:
2x-3=2x-16
PLEASE HELP!!!
The radius of a round pizza is 8 inches. What is
the area of the pizza?
Use 3.14 for pi.
Answer:
31.165 inches using pi exactly, but in your case the answer is 25.12 inches.
Hope this helps you :)
Trying again, but im attaching the screenshot this time!
Answer:
the area of a triangle is 9 because 4.24 times 4.24 equals 17.9776 estimated is 18 divided by 2 is 9 times 4 is 36. Now we divide 36 by 2 so we know what the area of the two trapezoids so we know the top and the bottom which is 18. The area of the square in between the triangles is 4.24 times 6 which is 25.22 estimated is 26. Now we add 26 with 18 which is 34. Now we have to find the area of the rectangle to do this we need to multiply 7.24 and 2 we need to do this so we know the length of the rectangle which is 14.48 estimated is 14. Now that we know the length we multiply it with the height which is 6, 14 times 6 equals 84.
84 is the rectangles area and the area for the trapezoids is 36.
84 plus 18 plus 18 equals 120 squared
States that have no income tax tend to have:
A. higher federal taxes.
B. higher property taxes or sales taxes.
C. lower federal taxes.
D. lower property taxes or sales taxes.
Answer:
b
Step-by-step explanation:
An income tax is a tax levied on persons or companies based on their earnings or profits. States that have no income tax tend to have higher property taxes or sales taxes.
What is income tax?An income tax is a tax levied on persons or companies based on their earnings or profits. In most cases, income tax is calculated as the result of a tax rate multiplied by the taxable income. Taxation rates may differ depending on the taxpayer's attributes and the source of income.
States that have no income tax tend to have higher property taxes or sales taxes. Hence, the correct option is B.
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Write and solve an inequality to find the values of x for which the perimeter of the rectangle is less than 140.
Select the correct answer below and fill in the answer box to complete your choice.
PLZ HELP MEEE
Given:
Length of the rectangle = [tex]x+4[/tex]
Width of the rectangle = [tex]x[/tex]
The perimeter of the rectangle is less than 140.
To find:
The inequality for the given situation and solve it.
Solution:
We have,
[tex]l=x+4[/tex]
[tex]w=x[/tex]
We know that, the perimeter of a rectangle is
[tex]P=2(l+w)[/tex]
[tex]P=2(x+4+x)[/tex]
[tex]P=2(2x+4)[/tex]
[tex]P=4x+8[/tex]
It is given that the perimeter of the rectangle is less than 140.
[tex]P<140[/tex]
[tex]4x+8<140[/tex]
[tex]4x<140-8[/tex]
[tex]4x<132[/tex]
Divide both sides by 4.
[tex]x<\dfrac{132}{4}[/tex]
[tex]x<33[/tex]
Therefore, the correct option is A because the sign of inequality is < and the solution of inequality is [tex]x<33[/tex].
HELP, WILL GIVE BRAINLY
function 1 is defined by the equation of y= 3t - 6. function 2 is defined by p, shown on the following graph. what function has a greater y-intercept?
chose 1 answer:
A: Function 1
B: Function 2
C: The function has the same y-intercept
Answer:
C: The function has the same y-intercept
Step-by-step explanation:
What is the distance between the points (12, 6) and (−8, 6) on a coordinate plane? *
4 units
12 units
6 units
20 units
Answer:
im pretty sure it is "4 units"
Step-by-step explanation:
Select all the values that are equivalent to 9 pennies 1: model of 9 hundredths 2: 90/100 3: model of 9/10 4: 9/100 5: 9/10 6: $0.09
the answer isn't 8-2root3 btw
Answer:
1.41226231144
Step-by-step explanation:
Answer:
Step-by-step explanation:
16cos(30)-20sin(60) -8sin(90)
look at the pattern of the numerators Millie, you can remember all of the sin and cos functions at the special angles now. :)
sin(0) = 0 / 2
sin(30) = 1 / 2
sin(45) = [tex]\sqrt{2}[/tex] / 2
sin(60) = [tex]\sqrt{3}[/tex] / 2
sin(90) = [tex]\sqrt{4}[/tex] / 2 aka 1
now the numerators just count up from 90°
cos(90) = 0 / 2
cos(60) = 1 / 2
cos(45) = [tex]\sqrt{2}[/tex] / 2
cos(30) = [tex]\sqrt{3}[/tex] / 2
cos(0) = [tex]\sqrt{4}[/tex] / 2 aka 1
see the pattern.. it's pretty easy to memorize, knowing that :)
now let's use the above to plug into the given equation
16* [tex]\sqrt{3}[/tex] / 2 - 20* [tex]\sqrt{3}[/tex] / 2- 8*[tex]\sqrt{4}[/tex] / 2
8* [tex]\sqrt{3}[/tex] - 10 [tex]\sqrt{3}[/tex] -8
-2*[tex]\sqrt{3}[/tex] - 8
this isn't quite the same answer as you got before.. I feel like it's right
Help plz giving out brianlest and 67 points please help
what is 2.5w in mathmatics
Answer:
Any line can be graphed using two points. Select two x values, and plug them into the equation to find the corresponding y values.
Step-by-step explanation:
x y
0 0
1 2.5
Graph the line using the slope and the y-intercept, or the points.
Slope: 2.5
y-intercept:
0
x y
0 0
1 2.5
Answer:
this was posed on my birthday
Step-by-step explanation:
ty for the points i hope you dont mind
The ratio of daisies to roses is 2 daisies to 7 roses.
If there are 6 daisies, how many roses are there?
There are
roses.
The proportion is solved and the number of roses is R = 21
What is Proportion?The proportion formula is used to depict if two ratios or fractions are equal. The proportion formula can be given as a: b::c : d = a/b = c/d where a and d are the extreme terms and b and c are the mean terms.
The proportional equation is given as y ∝ x
And , y = kx where k is the proportionality constant
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Given data ,
Let the proportion be represented as A
Now , the value of A is
If the ratio of daisies to roses is 2:7, this means that for every 2 daisies, there are 7 roses.
If there are 6 daisies, we can use this ratio to find out how many roses there are.
2 daisies = 7 roses
On simplifying the proportion , we get
1 daisy = 7/2 roses (dividing both sides by 2)
So, if there are 6 daisies:
6 daisies = (7/2) x 6 = 21 roses
Hence , there are 21 roses
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Find the values of the variables and the lengths of the sides of this kite.
2+2 pls help btw 4 .....
Answer:
is it 22.
Step-by-step explanation:
is it?
Answer:
I think its -24000
Not so sure though.
Find the cosine of angle E.
A) 39/80
B) 39/89
C) 80/39
D) 80/89
Answer:
B) 39/89
Step-by-step explanation:
With reference angle E
hypotenuse (h) = 89
base (b) = 39
cosine angle E
= b /h
= 39/89
When rounding to the nearest hundred thousand what is the greatest whole number that rounds to 400,000
Answer:
449,999
Step-by-step explanation:
Given that:
Greatest whole number that round to 400,000 when rounding to the nearest hundred thousand :
To obtain the greatest whole number which rounds to 400,000, the whole number is greater Tha 400,000 and its 10 thousand digit in the number or value to be rounded must be lesser than 5.
The value would be 449,999 ; here z the 10 thousand value which is 4 is rounded to zero since it is not up to 5 and the subsequent digits also rounded to 0 to give ;
400,000 (nearest hundred thousand).
PLS HELP the LAST QUESTION, please...
Answer:
280 Cubic inches
Step-by-step explanation:
When finding the volume, the equation is V=l*w*h
Therefore, the equation should be:
10.1*3.9*6.8
This is equal to exactly 267.852
However, the answer is 280 cubic in. because it's a larger number and it's about 13 from the actual answer. On the other hand, 250 cubic in. is about 17 from the actual number.
find h of the following cone
a polygon has 50 sides
all but one of its angle is 170 degrees
what is the size of the other angle?
Answer:
.2 degrees
Step-by-step explanation:
180-170 is 10
10/50 is .2
The size of the other angle will be 0.2 degrees.
What are polynomials?A polynomial in mathematics is an expression made up of coefficients and indeterminates and involves only the operations of multiplication, addition, subtraction, and non-negative integer exponentiation of variables.
The angle is defined as the span between two intersecting lines or surfaces at or close to the point where they meet.
It is given that a polygon has 50 sides but one of its angles is 170 degrees.
The remaining angle will be calculated as:-
180-170 = 10
The size of the other angle is calculated below:-
Angle = 10/50
Divide the value 10 by 50 to get the angle.
Angle = 0.2
Therefore, the size of the other angle will be 0.2 degrees.
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