The question is related to an arithmetical sequence where common difference is 2.
(a-2) +a + (a+2) =3a=69
a=23
So three odds are
21 23 25
So , there is this thing that says : "the circumference of a circle is 7,850 , whats the radious?
Answer:
1250 (corrected to 3 significant figures)
Step-by-step explanation:
the formula to calculate circumference is 2πr, where r is the radius.
hence, we can form the equation
2πr = 7850
r ≈ 1249.3663
= 1250 (corrected to 3 significant figures)
Guavas 25% Oranges 40% Bananas 15% Apples 20% What fractions of students prefer Apples?
Answer:
20/100=1/5 the fraction of students who prefer apples is 1/5
Plssss help
I need AC
Answer:
AC = 18
Step-by-step explanation:
Using the cosine ratio in the right triangle and the exact value
cos30° = [tex]\frac{\sqrt{3} }{2}[/tex] , then
cos30° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{AC}{AB}[/tex] = [tex]\frac{AC}{12\sqrt{3} }[/tex] = [tex]\frac{\sqrt{3} }{2}[/tex] ( cross- multiply )
2 AC = 12[tex]\sqrt{3}[/tex] × [tex]\sqrt{3}[/tex] = 12 × 3 = 36 ( divide both sides by 2 )
AC = 18
∠ACB=90° ⇒ ΔABC is right triangle
AB is hypotenuse, ∠BAC=30° ⇒
[tex]CB=\dfrac{AB}{2}=\dfrac{12\sqrt{3} }{2} =6\sqrt{3}[/tex]
Let's use Pythagorean theorem
[tex]AB^2=BC^2+AC^2\\AC^2=AB^2-BC^2\\AC^2=(12\sqrt{3})^2-(6\sqrt{3} )^2\\AC=\sqrt{(12\sqrt{3}-6\sqrt{3})(12\sqrt{3}+6\sqrt{3}))} \\AC=\sqrt{6\sqrt{3}\times18\sqrt{3} } \\AC=\sqrt{3\times6\times18} \\AC=18[/tex]
Distribute. 8(3x + 9)
Answer:
24x + 72
Step-by-step explanation:
Can someone please help me? I will give brainliest!
Answer:The height is 12ft
The length of the rug is 10ft and the height of the parallelogram is 12ft
The width of the rug is 6ft wide and the parallelogram is 9ft wide
Yes the rug will fit
Step-by-step explanation:
Please answer this (who ever answers correctly gets brainlest)
Answer:
3.6 ft = 43.2 inches
3.6 ft = 1.2 yards
Explanation:
Every foot is 12 inches. 3.6 * 12 = 43.2
To find yards, divide the feet by 3.
3.6 / 3 = 1.2
For each value of w, determine whether it is a solution to -54 <7w-5.
Answer:
All in order:
YES
NO
NO
NO
Step-by-step explanation:
-54 ≤ 7(-7) - 5 YES because the sign says greater than or equal to (in the image)
-54 ≤ 7(5) - 5 NO
-54 ≤ 7(7) - 5 NO
-54 ≤ 7(-9) - 5 NO
Here’s the explanation!!!!!
Answer:
It's correct
Step-by-step explanation:
(θ‿θ)(θ‿θ)(θ‿θ)
A merchant bought a dozen of books for 1500 birr and sold it at a profit of 15% of its cost price. What is the selling price?
Answer: They sold each book at a price of 143.75 birr
Step-by-step explanation:
1500 divided by 12 is 125 and 15% of 125 is 18.75 so add it together and you got your answer. hope this helps <3
Answer:
C. 1725
Step-by-step explanation:
We can find the selling price by adding the cost price and the profit made
As the merchant has made 15% of profit on 1500 birr . So ,
15% of 1500 is 225 birr
[tex] \frac{x}{1500} \times 100 = 15 \: percent[/tex]
Adding the cost price and profit made we get ,
Selling Price = 1500 birr + 225 birr
Sp = 1725 birr
please help!
use the order of operations to solve each problem.
1.) 2×3[7+(6÷2)]
2.) 3[-3(2-8)-6]
3.) 3×3[2-(9÷3)]
4.) 2[-5(4-12)-3]
5.) [(3×3)-(30÷6)]+(-27)-13
6.) 2÷[(4÷2)+(32÷8)]
Answer:
1.) 60
2.) 36
3.) -9
4.) 74
5.) -36
6.) [tex]\frac{2}{6} =\frac{1}{3}[/tex]
Step-by-step explanation:
1.) 2×3[7+(6÷2)]
2×3[7+3]
2×3×10
2×30
60
2.) 3[-3(2-8)-6]
3[-3(-6)-6]
3[18-6]
3×12
36
3.) 3×3[2-(9÷3)]
3×3[2-3]
3×3[-1]
3×3×-1
9×-1
-9
4.) 2[-5(4-12)-3]
2[-5(-8)-3]
2[40-3]
2×37
74
5.) [(3×3)-(30÷6)]+(-27)-13
[9-5]+(-27)-13
4-27-13
4-40
-36
6.) 2÷[(4÷2)+(32÷8)]
2÷[2+4]
2÷6
[tex]\frac{2}{6} =\frac{1}{3}[/tex]
Hope this helps!
I need help with number 9
Answer:
55 ft
Step-by-step explanation:
The mirror is 10 times as far to the dinosaur as it is to Amir: 40 ft = 10×4 ft.
The triangles shown in the diagram are similar, so the height of the dinosaur will be 10 times Amir's eye height. In feet, Amir's eye height is 5 6/12 feet, or 5.5 feet. Ten times that is 55 feet.
The dinosaur is 55 feet tall.
Answer:
55ft
Step-by-step explanation:
Ira enters a competition to guess how many buttons are in a jar. Ira’s guess is 200 buttons. The actual number of buttons is 250. What is the percent error of Ira’s guess?.
Triangle A has a height of 2.5cm and a base of 1.6cm. The height and base of triangle B are proportional to the height and base of triangle A. Which of the following could be the height and base of triangle B?
Answer:
I THINK ( A ) IS CORRECT ANSWER
I THINK ( A ) IS CORRECT ANSWERHOPE THIS HELPS U!!!
plz help with iready
Answer:
118
Step-by-step explanation:
150+16%=174
174 - 32% = 118.32
118.32=118(to nearest whole number)
Answer:118
Step-by-step explanation:
Answer 1a please and thank you
Answer:h
Step-by-step explanation:
j
8) Casey has n nickels. Megan has 4 times as many nickels as Casey has. Write the expression that
represents the total number of nickels Casey and Megan have. Use an expression bubble.
PLEASE HELP GIVING A GOOD AMOUNT IF POINTS
Answer: 5n nickels
Step-by-step explanation:
Since Casey has n nickles and Megan has 4 times as much, Megan has 4*n nickels = 4n nickels. The total ampunt = n+4n = 5n nickels.
What is the slope of the line that passes through the points (-4, -1) and (4, 5)?
a) 4/3
b) 3/4
c) -3/4
d) -4/3
Answer:
3/4
Step-by-step explanation:
Since we have two points, we can use the slope formula
m = ( y2-y1)/(x2-x1)
= ( 5 - -1)/( 4 - -4)
= ( 5+1)/(4+4)
= 6/8
= 3/4
I NEED HELP!!!!
What is the main difference between multiplying decimals and whole numbers? If one factor has 2 decimal places and another factor has 1 decimal place, how many decimal places will the product of these two factors have?
Answer:
Both type of numbers have a decimal point but the decimal numbers can contain digits other than 0 so you have to worry for these numbers when you're multiplying and the placement of the decimal point in the answer.
A way think about it is sum the total numbers after the decimal point, this work because the numbers can be represented as fractions (explanation below) so If one factor has 2 decimal places and another factor has 1 decimal place the answer have 3 decimal places.
Step-by-step explanation:
A whole can be represented as 2 and so on, while a decimal number is represented as 3.14 when the numbers after the decimal point can be different of 0.
So when you multiply two decimal numbers check the total number of number after the decimal point and sum these amounts.
Where the total number of numbers after the decimal point is equal to the power of 10 in the denominator that's mean equal to 3. However this method takes more time, so is more simply to say that the total of numbers after the decimal point is the sum of the total of numbers after the decimal point of each decimal number.
please help with this : use 3 for pi
8
——
math
pls help geniuses!!
——————————-
Answer:
C = ( -7 , 6 )
R = 2
SO ...
The ANSWER is "A"
Model the following verbal description below with an equation, Table, and graph. The table must include at least five data points. The table must include at least five data points. The basketball team wants to order shirts for the game days. The t-shirt company charges a $5 flat rate for using their services and $2 for every letter on the shirt.
Modeling of a situation is getting its properties held in another system, usually mathematical. The equation for given situation is [tex]C = 2T + 5[/tex]
How to form mathematical expression from the given description?You can represent the unknown amounts by the use of variables. Follow whatever the description is and convert it one by one mathematically. For example if it is asked to increase some item by 4 , then you can add 4 in that item to increase it by 4. If something is for example, doubled, then you can multiply that thing by 2 and so on methods can be used to convert description to mathematical expressions.
For the given case the number of t-shirts brought is not known, so let we take it as T
Since each t-shirt costs $2, thus, T t-shirts will cost: T × $2
Since, cost of using the service of the t-shirt company is $5 flat rate, thus,
Total cost for purchasing T t-shirts = T × $2 + $5
Let total cost be denoted by C, then:
[tex]C = 2T + 5[/tex]
(we usually don't write multiplication sign usually, and write the quantities close to each other, denoting that they're in multiplication.)
(we usually don't write symbols like $ etc in equations. It is known from context like what type of currency is in discussion(if multiple currency, then we can do some modification to variable symbols).
Thus,
The equation for given situation is [tex]C = 2T + 5[/tex]
Table for it, using values of T from 1 to 5, we get:
[tex]\begin{array}{cc}T&C\text{(In dollars)}\\1&7\\2&9\\3&11\\4&13\\5&15\end{array}[/tex]
Plotting them in graph, we get the following attached graph.
Learn more about forming equations here;
https://brainly.com/question/12279939
A bootstrap sampling distribution was constructed for a single mean. The sample mean was 100 and the standard deviation was 15. Given a sample size of 30 the standard error was 2.739. If the sample size were increased to 500, how would the standard error change?
a. It would increase.
b. It would stay the same.
c. It would decrease.
Answer:
c. It would decrease
Step-by-step explanation:
When you increase the sample size, you decrease the standard/marginal error since you have a bigger representation of the population. However, this would take time and money to collect data for these big samples.
The Martinez family ate at a restaurant. The cost of the meal was $34.50. The sales tax was 6% of the cost of the meal. They left a tip of 15% of the cost of the meal plus tax. What was the total cost of the meal, tax, and tip?
(I ALREADY KNOW THE ANSWER. BUT I NEED THE WORK FOR THE ANSWER TO SHOW MY TEACHER) (the answer is $42.06 btw)
1. observe problem
The Full price is:
The Subtotal + the Subtotal*tax
so,
34.50+34.50*0.06=
36.57
The Full price plus tip is
Full price + Full price * tip percentage
so,
36.57+36.57*0.15
Which is
$42.0555
Rounded to is
$42.06
(4x+3)^2=225^2
Simplify and find the solution
Answer:
hi is this correct please let me know
Step-by-step explanation:
4x
4
+91x
2
−225=0
Substitute t for x
2
.
4t
2
+91t−225=0
All equations of the form ax
2
+bx+c=0 can be solved using the quadratic formula:
2a
−b±
b
2
−4ac
. Substitute 4 for a, 91 for b, and −225 for c in the quadratic formula.
t=
2×4
−91±
91
2
−4×4(−225)
Do the calculations.
t=
8
−91±109
Solve the equation t=
8
−91±109
when ± is plus and when ± is minus.
t= 49
t=−25
Find the slope of the graph
Answer: The slope of the graph is -2
Step-by-step explanation:
Take any two points from the graph, and do rise/run
For example, we take (1,3) and (2,1)
Apply rise/run... rise: 2, run: -1
2/-1 = -2
m = -2
For the next question, the slope is 4
And the last question, the slope is 1 1/2
Hope this helped!
What are the variables in this expression? f 2 g StartFraction h over 4 EndFraction minus 7 f and g only g and h only f, g, and Negative 7 only f, g, and h only.
Answer:
The variables are F, G and H
Answer:
F,g,h Good luck!
Step-by-step explanation:
A data set is shown in the table. The line of best fit modeling the data is y = 2. 69x – 7. 95. A 2-column table with 5 rows. The first column is labeled x with entries 1, 2, 3, 4, 5. The second column is labeled y with entries negative 5. 1, negative 3. 2, 1. 0, 2. 3, 5. 6. What is the residual value when x = 3? –0. 88 –0. 12 0. 12 0. 88.
Answer The awnser is the 2x69, by 75 and 35 by 39x4 and 3 5ths .
Step-by-step explanation:
What prism or other 3-dimensional shape would you use to model the tree trunk below? (Rectangular prism, triangular prism, square prism, or cylinder). If the height of the tree trunk is 13 ft and the radius is 1.5 ft, what is the volume in cubic feet?
Answer:
cylinder91.9 ft³Step-by-step explanation:
a)An object with a uniform circular cross section is generally modeled by a cylinder.
__
b)The formula for the volume of a cylinder is ...
V = πr²h
For the given radius and height, the volume is ...
V = π(1.5 ft)²(13 ft) ≈ 91.9 ft³
The volume of the tree trunk is about 91.9 ft³.
What prism or other 3-dimensional shape would you use to model the tree trunk below? (Rectangular prism, triangular prism, square prism, or cylinder). If the height of the tree trunk is 13 ft and the radius is 1.5 ft, what is the volume in cubic feet?
Answer:[tex] \color{hotpink} \bold{91.85 \: \: ft} [/tex]— — — — — — — — — —
— I will use cylinder to model the tree trunk since it's looks like. (Please refer to the pic)
Formula:[tex] \underline{ \boxed{ \sf \: V=πr²h}}[/tex]where,
V is the Volumeπ (pi) is the constant 3.14r is the radiush is the height– This formula is used when the radius of the base is given.
Solution:Remember that radius has to be multiplied by itself (squared). And pi (π) is the constant 3.14.
– Using the formula above, substitute the givens in the formula then solve.
[tex] V=πr²h[/tex][tex]V=3.14 \times (1.5)² \times 13[/tex][tex] V=3.14 \times (2.25 \times 13)[/tex][tex]V= \underline{ \boxed{ \blue{ 91.85 \: ft ^{3} }}}[/tex]Hence, the volume is 91.85 ft³.
_______________∞_______________
solvemath ttttttttttttttttttttttttttttttttttttttttt
Answer:
Step-by-step explanation:
1)5^1/3*3 = 5^3/3 = 5
2) 5+x=2 =>x=2-5 => x=-3
3)2*1/2^2*4^4 => 2*1/4*256 => 0,5*256 = 128
4) Rule!Any number to the power 0 is equal to 1; and 1 to any power will always give 1. => 1^5 =1.
5)x^(-6)-(-4) => x^-2 ; x^(-2)+3=x
y^5-8=y^-3
=>z^3/ x^2*y^3
z^0=1
x/y^3
BCDE is a Rhombus.
B
С
55°
E
D
What is the mDBE?