Answer:
identity property of addition.
Step-by-step explanation:
basically it means any number plus zero is equal to the original number
x+0=x
Answer:
The answer will be number 1, idenity property of addition (:
Step-by-step explanation:
please help !!!
A toddler slides down a slide that is 8 feet long that makes an angle of 24 with the ground. How high is the slide ?
9514 1404 393
Answer:
about 3.25 feet
Step-by-step explanation:
The relevant trig relationship is ...
Sin = Opposite/Hypotenuse
sin(24°) = height/(8 ft)
height = (8 ft)sin(24°) ≈ 3.254 ft
The slide is about 3.25 feet high.
which is farther in order 2.5 miles,3.2 kilometers, 2300 meter, 3000 yards
Answer:
2300 meters, 3000 yards, 3.2 kilometers, 2.5 miles is smallest distance to longest distance. so the furthest, to the closest would be:
2.5 miles, 3.2 kilometers, 3,000 yards, 2,300 yards
Step-by-step explanation:
I hope this helps :)
Find the standard deviation if the mean of a sample is 72, a z-score of 3 Raw Score: 42 Raw Score: 81
Answer:
a) when x = Raw Score: 42
Standard deviation = σ = -10.3
b) Raw Score: 81
Standard deviation = σ = 2.67
Step-by-step explanation:
Find the standard deviation if the mean of a sample is 72, a z-score of 3
Z score formula is given :
z = (x-μ)/σ,
where
x is the raw score
μ is the population mean = 73
σ is the population standard deviation
z = 3
a) when x = Raw Score: 42
z = (x-μ)/σ
3 = 42 - 73/σ
Cross Multiply
3σ = 42 - 73
3σ = -31
σ = -31/3
σ = -10.3
b) Raw Score: 81
z = (x-μ)/σ
3 = 81 - 73/σ
Cross Multiply
3σ = 81 - 73
3σ = 8
σ = 8/3
σ = 2.67
Find the circumference of a circle with radius, r = 16m. Give your answer in terms of π .
Answer:
[tex]32\pi[/tex] meters
Step-by-step explanation:
The formula for finding the circumference of a circle is [tex]C=2\pi r[/tex], where [tex]C[/tex] = circumference and [tex]r[/tex] = radius. In this case, we are solving for [tex]C[/tex] and we know that [tex]r=16[/tex], so after substituting [tex]r=16[/tex] into [tex]C=2\pi r[/tex], we get:
[tex]C=2\pi r[/tex]
[tex]C=2\pi *16[/tex] (Substitute [tex]r=16[/tex] into [tex]C=2\pi r[/tex])
[tex]C=32\pi[/tex] (Simplify RHS)
Hope this helps!
We have,
Radius of the circle = 16 m
We know,
Circumference = 2πr
∴ Circumference = 2π × 16 m = (32π) m.
Tell whether the data in the table can be modeled by a linear equation. Explain.
Answer:
Yes, it can.
Step-by-step explanation:
Every time x increments by 1, y increments by 0.2.
The linear equation that satisfies the given data will be y = 0.2x + 1.2.
What is a linear equation?A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.
The linear equation is given as,
y = mx + c
Where m is the slope of the line and c is the y-intercept of the line.
The table is given below.
x 0 1 2 4
y 1.2 1.4 1.6 2
The line is passing through (0, 1.2). Then the value of 'c' will be
1.2 = m * 0 + c
c = 1.2
The line is also passing through (4, 2). Then the value of 'm' will be
2 = 4m + 1.2
m = 0.2
The linear equation that satisfies the given data will be y = 0.2x + 1.2.
More about the linear equation link is given below.
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The price of one share of a stock increased by $3 on Monday and then decreased by $4 on Tuesday. Which expression shows the change in the price of a share of the stock in two days?
Answer:
I think it's 3+(-4)
Hope this helps
4 boxes can hold 40 books how many books per box
Answer:
10 books per box
Step-by-step explanation:
40÷4
=10
10×4= 40
CANNOT!!! be simplified
Answer:
left down
Step-by-step explanation:
do you want an explanation?
You and a friend are buying lemons and sugar for a lemonade stand. You spend $14.45 to buy lemons and your friend spends $8.85 to buy sugar. How much does it cost to make the lemonade?
Answer:
23.3
Step-by-step explanation:
Answer:
$23.30
Step-by-step explanation:
What are two numbers that have a product of - 40 and have a sum of 18?
Step-by-step explanation:
xy = -40 and x + y = 18
=> x(18 - x) = -40
=> 18x - x² = -40
=> x² - 18x - 40 = 0
=> (x - 20)(x + 2) = 0
=> x = 20 or x = -2.
The two numbers 20 and -2.
Answer:
let the numbers be x and y
[tex]xy = - 40 - - - (i) \\ x + y = 18 - - - (ii) \\ from \: (ii) \\ x = 18 - y \\ substitute \: for \: x \: in \: (i) \\ (18 - y)y = - 40 \\ 18y - {y}^{2} = - 40 \\ {y}^{2} - 18y - 40 = 0 \\ use \: the \: quadratic \: equation \: to \: get \: y \\ and \: y \: will \: give \: u \: x[/tex]
x = 20
hence y = 18-20
y = -2
or
x = -2
hence y = 18-(-2)
y = 20
The numbers are -2 and 20
-5x + 20 <5
I need help!
Answer:
Step-by-step explanation:
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Answer:
x>3
Step-by-step explanation:
-5x+20<5 (move the constant to the right)
-5x<5-20 (calculate)
-5x<-15 (divide both sides)
solution: x>3
hope this helps!
PLSSS HELP ME ITS DUE IN AT 11:59
HELPPPPPPPPPPPPP
Step-by-step explanation:
-7 >= -5r + 3
-10 >= -5r (subtract 3 from both sides)
2 <= r (divide -5 on both sides and flip the sign)
Hence we have r is greater than or equal to 2.
The only set that satisfies this is {2, 4, 6, 8}. (G)
Convert the equation from intercept form to standard form.
y= 3(x-1)(x-4)
Answer:
I think the answer is y = 3x + 12.
Step-by-step explanation:
y = 3 (x - 1) (x - 4)
y = 3x -3 (x - 4)
y = 3x + 12
Kim drives 156 miles from rotherham to london she drives at an average speed of 60 miles per hour she leaves rotherham at 7:30 am does she arrive before 10:00 am?
Given :
Kim drives 156 miles from rother ham to London she drives at an average speed of 60 miles per hour she leaves rother ham at 7:30 am .
To Find :
Can she arrive before 10:00 am.
Solution :
Time taken to cover 156 miles with speed of 60 miles per hour.
[tex]t= \dfrac{Distance}{Time\ taken}\\\\t = \dfrac{156}{60}\ hour\\\\t = 2.6\ hours[/tex]
To arrive before 10:00 am she has only 2.5 left.
But time taken is 2.6 hours which is greater than 2.5 hours.
Therefore, Kim cannot arrive there before 10:00 am.
Answer:
10am
Step-by-step explanation:
You want to buy a DVD that costs $19.95. Estimate the total cost if the sales tax rate is 8%.
a. 21.00
B. 2.00
C. 1.60$ which is wrong
D. 22.00
Answer:
$22.00
Step-by-step explanation:
19.95x8%=1.596
19.95+16=21.55
Anthony is preparing to paint a large shipping container and needs to calculate the area of the container so he can buy the correct
amount of paint. The equation he uses to find the area, A, in square feet is A = 2(w + hw +1h) where / is the length, w is the width,
and h is the height of the container. The container is 8 feet wide, 12 feet high, and 24 feet long. What is the area of the container
in square feet?
Answer:
1152 square feetStep-by-step explanation:
The dimensions of the container:
w = 8 feet, h = 12 feet, l = 24 feetThe area of the container is:
A = 2(lw + hw + lh)A = 2(24*8 + 12*8 + 24*12) = 1152 square feetChild admissions is 5.50 adult admission is 9.80 159 tickets where sold total sales 1136.80 how many where child admissions
Answer:
98
Step-by-step explanation:
Given that:
Total number of tickets sold = 159
Ticket price for child admissions = 5.50
Ticket price for adult admissions = 9.80
Total money spent = 1136.80
To find:
The number of child admissions.
Solution:
Let number of child admissions = [tex]x[/tex]
Let number of adult admissions = [tex]y[/tex]
As per question statement:
[tex]x+y = 159[/tex] ...... (1)
and
Money spent for child admissions = 5.50[tex]x[/tex]
Money spent for adult admissions = 9.80[tex]y[/tex]
[tex]5.50x+9.80y = 1136.80[/tex] ...... (2)
Using equation (1):
[tex]y = 159-x[/tex]
Putting in equation (2) from above:
[tex]5.50x+9.80(159-x) = 1136.80\\\Rightarrow 5.50x+1558.2-9.8x=1136.80\\\Rightarrow 4.3x = 421.4\\\Rightarrow x = \bold{98}[/tex]
Therefore, total number of child admissions is 98.
Given: SV || TU and SVX = UTX
Prove: VUTS is a parallelogram.
State the given then use
CPCTC to say all their parts match and say what specifically makes it a parallelogram.
Answer:
ΔSVX ≅ ΔUTX Given
SV // TU Given
SV ≅ TU Corresponding part of congruent triangle
VUTS parallelogram Definition of parallelogram.
Step-by-step explanation:
The given figure VUTS is a parallelogram.
What is Parallelogram?Parallelogram is a type of polygon with four sides, four angles and four vertices. It is a type of Quadrilateral.
Opposite sides are parallel, and the opposite sides and opposite angles are equal.
Given that,
SV ║TU
Also ΔSVX ≅ ΔUTX
Since both the triangles are congruent, corresponding sides are equal.
SV = UT
SX = UX
VX = TX
Consider two triangles ΔVUX and ΔSTX.
Already we have 2 corresponding sides of these triangles are equal from above.
So third side is also equal.
Since US is a transversal line that cuts the parallel lines VS and UT, ∠VUX = ∠TSX (alternate interior angles)
Similarly, VT is also a transversal line that cuts the parallel lines VS and UT,
∠UVX = ∠STX
So the two lines VU and ST are parallel.
Hence the figure is parallelogram since opposite sides are equal and parallel.
Learn more about Parallelogram here :
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The side lengths are 9,12, and 15 . is this a right triangle?
Answer:
yes, the last one because 81 + 144 = 225
Step-by-step explanation:
Answer:
D. yes because 9^2 + 12^2 = 15^2.
Step-by-step explanation:
Got a 100% on meh test
Please show the work
Answer:
[tex]A.f(x) = x^{2} -2x - 15[/tex]
Step-by-step explanation:
Based on the given information, one can write the quadratic equation in factored form. Since the zeros of the equation are the roots, one can say that;
[tex]y = ( x + 3 )( x - 5)[/tex]
(where x = -3, and x = 5 are the roots)
Now all one has to do is distribute to find the quadratic equation in standard form;
[tex]y = (x + 3) (x - 5)\\y = x^{2} +3x - 5x - 15\\y = x^{2} -2x - 15[/tex]
Simplify the following expression:
__-16-8__ + 25 / 5 + 1
2
A. -18
B. 6
C. 10
D. -6
Answer:
-6
Step-by-step explanation:
The value of Maggie's car decreased by 10% since last year, when she bought it. If the car is now worth $18,000.00, how much was the car worth when she bought it?
Answer:
$20,000.00
Step-by-step explanation:
90% = 0.90
18000/0.90 = $20,000
CHECK
0.90 x $20,000 = $18,000
can you guys help me find the domain? (finding the domain graphically)
Answer:
Another way to identify the domain and range of functions is by using graphs. Because the domain refers to the set of possible input values, the domain of a graph consists of all the input values shown on the x-axis. The range is the set of possible output values, which are shown on the y-axis.
Step-by-step explanation:
Hope this helps i would give answer but i dont know what the answer is so sorry but hope this helps you.
Christelle and Larkin both drive customers on the weekend. Christelle charges a flat fee of $4, plus $1 per mile. Larkin charges a flat fee of $2, plus $1.25 per mile
Complete question :
Christelle and Larkin both drive customers on the weekend. Christelle charges a flat fee of $4, plus $1 per mile. Larkin charges a flat fee of $2, plus $1.25 per mile.
Which equations represent each of their earnings, (y), after a given number of miles, (x)?
Select two that apply. Put more then one answer
y=4x+4
y=x+4
y=2x+1.25
y=1.25x+2
y=−x−4
y=1.25x−2
Answer:
y=x+4
y=1.25x + 2
Step-by-step explanation:
Christelle:
Flat fee = $4
Charge per mile = $1
Earning, y after x miles
y = 4 + x
Lakin:
Flat fee = $2
Charhe per mile = $1.25
EEarning, y after x miles
y = 2 + 1.25x
Jeremy mowed several lawns to earn money. After he paid $17 for gas, he had $75 leftover. How much did he earn?
Answer:
75 + 17 = 92
Step-by-step explanation:
please help i will make sure to mark brainliest
Find the slope of the line that contains (6, 2) and (6, -3).
A -1
B -5
C undefined
D 0
What is the value of a, if the graphs of 3y + x = 0 and 4y + ax + 3 = 0 are to meet at a right angle?
Answer:
a = -12
Step-by-step explanation:
For two lines to meet at a right angle, they are perpendicular to each other. Therefore the product of the slopes of the two lines is -1.
The slope of 3y + x = 0 will be -1/3 (rearrange the terms, 3y = -x and therefore y = -1/3 x).
The slope of 4y + ax + 3 = 0 will be -a/4. (4y = -ax - 3, therefore y = -a/4 x - 3/4)
Since the product of the slopes is -1, we can set up an equation now.
-1/3 * -a/4 = -1
a/12 = -1
a = -12
please help and thank you!
9514 1404 393
Answer:
base area: 21 ft²volume 105 ft³Step-by-step explanation:
The area of a triangle is given by the formula ...
A = (1/2)bh
The base and height of a right triangle can be taken to be the leg lengths, since each is perpendicular to the other.
A = (1/2)(6 ft)(7 ft) = 21 ft² . . . . base area
__
The volume is the product of the base area and the height:
V = Bh
V = (21 ft²)(5 ft) = 105 ft³ . . . . volume
Evaluate 5 - (4 + 2)2
O A. 9
O B. -15
O C. 5
O D.-31
Answer:
exponents first then multiply and subtract after
Step-by-step explanation:
the answer is 5