Answer:
56.52 cm
Step-by-step explanation:
Concepts
The circumference of a circle is the distance around it, or the perimeter of the circle. The formula to find the circumference is 2πr, where r = radius.
Application
We're given the radius as 9 cm, and we have to find the circumference of the circle using π as 3.14. Let's use the formula 2πr to solve for this.
Solution
[tex](2)(3.14)(9)[/tex] [tex](6.28)(9)[/tex][tex]56.52[/tex]Sadie is 3 years older than Kareem, and Kareem is twice as old as Nadra. The sum of their ages is 33.
A student used the steps below to find each person’s age.
Step 1 Write an equation, letting x represent Kareem’s age:
(x + 3) + x + 2 x = 33
Step 2 Solve the equation:
(x + 3) + x + 2 x = 33. 3 + 4 x = 33. 4 x = 30. x = 7 and one-half.
Step 3 Sadie is 10 and one-half, Kareem is 7 and one-half, and Nadra is 3 and three-fourths.
Which corrects the student’s first error?
Answer:
Step 1-Write an equation, letting x represent Kareem’s age:
(x + 3) + x + 2 x = 33
Step 2-Solve the equation:
(x + 3) + x + 2 x = 33. 3 + 4 x = 33. 4 x = 30. x = 7 1/2.
Step 3-Sadie is 10 1/2, Kareem is 7 1/2, and Nadra is 3 3/4.
Which corrects the student’s first error?
1. In Step 1, the student should have used One-half x to represent Nadra’s age, and written the equation (x + 3) + x +1/2x = 33.
2. In Step 2, the student should have added 3 on both sides of the equation to find a solution of x = 9.
3. In Step 3, the solution represents Sadie’s age. Therefore, Sadie is 7 1/2, Kareem is 4 1/2, and Nadra is 2 1/4.
4. In Step 3, Nadra’s age is the difference between 33 and Sadie’s and Kareem’s ages, so Nadra is 15.
Using the data set below, find the mean absolute deviation (MAD).
Find the distance of each data value from the mean by subtracting the mean from the data value.
Step 2: Find the absolute values of all the distances. These are the "absolute deviations."
Step 3: Find the average of the absolute deviations.
5. Find all the two-digit numbers which are increased by 75% when their digits are reversed.
Answer:
Let a two digit number be, 10x + y.
75% of the number is,
= 75 % of (10 x + y)
= 75/100 × (10x+y)
= 3/4 × ( 10x + y)
According to the question, When increased by 75%, The digits must be reversed.
So,
(10 x + y) + 3/4 ( 10x + y) = 10y + x
4 (10x + y) + 3 ( 10x + y) = 4 ( 10y + x)
7(10x + y) = 4(10y + x)
70x + 7y = 40y + 4x
70x - 4x = 40 y - 7y
66x = 33y
2x = y
So,
x = 1, y = 2, 10x + y = 12
x = 2, y = 4, 10x + y = 24
x = 3, y = 6, 10x + y = 36
x = 4 , y = 8 , 10x + y = 48
x can't be 5, as y will be 10 ( y should be a single digit).
Therefore, 4 two digit numbers are possible.
-5x + 2y = -29
5x - 2y = 24
Answer:
-10x + 4y = -53
Step-by-step explanation:
-5x+2y = -29
5x - 2y = 24
subtract both values from up to down
-5x - 5x = -10x
2y - (-2y) = 4y
-29 - 24 = -53
-10x + 4y = -53
Please answer fast and give expaination I will give brainliest
Answer:
Agree.
Step-by-step explanation:
1. (5^r)^t can be represented simply as 5^rt.
2. when r as negative integer, t as positive integer, rt is always a negative integer
3. when ever the indices rt is negative, the number 5^rt will be less than 1, thus cannot be a whole number for sure.
on a coordinate plane what is the distance between the point at (4,7) and the point (-4,7)
Answer: 8 units
Step-by-step explanation:
We will use the distance formula.
[tex]\displaystyle d=\sqrt{(x_{2}-x_{1})^2 +(y_{2}-y_{1})^2}[/tex]
[tex]\displaystyle d=\sqrt{(-4-4)^2 +(7-7)^2}[/tex]
[tex]\displaystyle d=\sqrt{(-8)^2 +(0)^2}[/tex]
[tex]\displaystyle d=\sqrt{64[/tex]
d = 8
Which pair of expressions has the same value?
A. (–2)(–7) and 4 + (–18)
B. (2)(7) and 4 + 18
C. (–2)(7) and 18 + (–4)
D. (2)(–7) and 4 – 18
Assuming that (-2)(-7) and 4 + (-18) are equal.
⇒ (-2)(-7) = 4 + (-18)Using the property [-x × -y = x × y = xy]:
⇒ (-2)(-7) = 4 + (-18) ⇒ (2)(7) = 4 + (-18)Using the property [x + (-a) = x - a]:
⇒ (2)(7) = 4 + (-18)⇒ (2)(7) = 4 - 18⇒ 14 = -14 (False)Option B)Assuming that (2)(7) and 4 + 18 are equal.
⇒ (2)(7) = 4 + 18⇒ 14 = 22 (False)Option C)
Assuming that (–2)(7) and 18 + (–4) are equal.
⇒ (-2)(7) = 18 + (-4)Using the property [-x × y = -xy]:
⇒ (-2)(7) = 18 + (-4)⇒ (-)(2)(7) = 18 + (-4)⇒ -14 = 18 + (-4)Using the property [x + (-a) = x - a]:
⇒ -14 = 18 + (-4)⇒ -14 = 18 - 4⇒ -14 = 14 (False)Option D)
Assuming that (2)(-7) and 4 - 18 are equal.
⇒ (2)(-7) = 4 - 18Using the property [-x × y = -xy]:
⇒ (-)(2)(7) = 4 - 18⇒ -14 = 4 - 18⇒ -14 = -14 (True)Therefore, Option D is correct.
Which of these intersections of a plane and a three dimensional figure result in a triangular cross section
Answer:
top right one
Step-by-step explanation:
Top left one makes a square
bottom left one makes a circle
top right one makes a triangle
bottom right one makes a circle
The intersection of a plane and a three-dimensional figure results in a triangular cross-section is a triangular pyramid.
What is a cross-section?A solid's cross-section is a plane figure formed when the solid intersects another plane. As a result, the cross-section of an object is an infinitesimal "slice" of a solid, and it can vary depending on how the slicing plane is oriented. A sphere's cross-section is always a disk, although a cube's cross-section can be square, hexagonal, or another shape.
In these types of three-dimensional geometrical problems imagination of the figures is very crucial.
Now, Think of the plane as a very very thin sheet cutting a triangular pyramid parallel to its base will have exactly the same cross-section as its base and we know a triangular pyramid has a triangular base.
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can you find the area and perimeter A=, P=??
area: 37.74 yds
you get this by multiplying the length and width
perimeter: 25 yds
you get this by adding up the length of each side
How many yards are equivalent to 38 feet? 1 yard = 3 feet
Answer:
13 yards
Step-by-step explanation:
38/3 => 12.6667 yards which would be closest to 13 yards
The formula is to divide the lenght value by 3.
The number 38 feet is equal to 12.67 yards.
We have to give that,
To change 38 feet into yards.
Since we know that,
1 yard = 3 feet
1 feet = 1/3 yards
Hence, change 38 feet into yards as,
1 feet = 1/3 yards
38 feet = 38/3 yards
38 feet = 12.67 yards
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GIVING THREE BRAINLIEST PLS HURRY
A sentence with antonyms has two words with
somewhat different meanings
opposite meanings
similar meanings
the same meanings
Answer:
opposite meanings
Step-by-step explanation:
An antonym is a word that means the opposite of another word
what is the measure of MOP Angle MON is a straight angle and OP bisects MOQ
The measure of the angle MOP is 61° (Third option)
What is an angle?The angle is defined as the span between two intersecting lines or surfaces at or close to the point where they meet.
Angle MON is a straight angle → ∠MON=180°
∠QON=58° (according to the graph)
OP bisects angle ∠MOQ, then OP divides angle ∠MOQ into two equal angles:
∠MOP=∠POQ=∠MOQ/2 (1)
∠MOQ+∠QON=∠MON
Replacing the known values in the equation above:
∠MOQ+58°=180°
Solving for ∠MOQ: Subtracting 58° on both sides of the equation
∠MOQ+58°-58°=180°-58°
∠MOQ=122°
Replacing ∠MOQ by 122° in the equation (1)
(1) ∠MOP=∠POQ=122°/2
∠MOP=∠POQ=61°
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Can anyone please help me IM not sure if the first one is correct
Answer:
you are correct keep up the good work.
Answer:
The 1st one is correct and the second one is (5, -3)
Step-by-step explanation:
For the 1st question this is what I did:
d=√(x^2−x^1)^2+(y^2−y^1)^2
d=(0−4)^2+(6−3)^2
√d=(−4)^2+(3)^2
√d=16+9
√d=25
√d=5
For the second question I did this:
(xM,yM)=(x1+x2/2,y1+y2/2)
M=(xM,yM)
M=(x1+x2/2,y1+y2/2)
M=(3+7/2,−1+−5/2)
M=(10/2,−6/2)
M=(5,−3)
Hope this helps!
Please explain, I don't know how to solve.
it's base× height (same as a rectangle:
4×5=20
the triangle, 3, and right angle are there just to confuse you :)
In the circus, a lion has been trained to jump through a ring of fire that has a radius of 1 meter. What is the ring's circumference?
A circle is a curve sketched out by a point moving in a plane. The circumference of the ring of fire is 6.2831 meters.
What is a circle?A circle is a curve sketched out by a point moving in a plane so that its distance from a given point is constant; alternatively, it is the shape formed by all points in a plane that are at a set distance from a given point, the centre.
The circumference of the ring if the radius is 1 meter is,
Circumference of the ring = 2πr = 2 × π × 1 = 6.2831 meters
Hence, the circumference of the ring of fire is 6.2831 meters.
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Find the remainder when x3-4x2-7x+10 is divided by x+2
Answer:
Remainder is 0
Hope this helps
Which ordered pair is a solution to the equation? y = 4x + 15 (15,0) 0 (7.-2) (-1,4) (-3, 3)
Simplify the expression. Write your answer as a power.
(-6.4)⁸
(-6.4)⁶
The simplified expression is
The expression [tex]\frac{(-6.4)^8}{(-6.4)^6}[/tex] is an exponential expression and the value of the expression is 40.96
How to evaluate the expression?The expression is given as:
[tex]\frac{(-6.4)^8}{(-6.4)^6}[/tex]
Expand the expression by applying the law of indices
[tex]\frac{(-6.4)^8}{(-6.4)^6} = (-6.4)^{8-6}[/tex]
Evaluate the difference
[tex]\frac{(-6.4)^8}{(-6.4)^6} = (-6.4)^2[/tex]
Evaluate the exponent
[tex]\frac{(-6.4)^8}{(-6.4)^6} = 40.96[/tex]
Hence, the value of the expression is 40.96
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Pete entered a lucky draw. The probability of winning a free ticket for a soccer game is 15%. What are the ODDS AGAINST winning a free ticket to the soccer game?
3 to 17
17 to 3
3 to 20
17 to 20
Answer:
3 to 20
Step-by-step explanation:
NEEED HELPPPP TRYING NOT TO FAIL MATHH !!
Can someone explain this?
Answer:
see the attachment!
i hope this can help you.
Solve for x????????????????????
[tex] \huge \tt \color{pink}{A}\color{blue}{n}\color{red}{s}\color{green}{w}\color{grey}{e}\color{purple}{r }[/tex]
[tex] \large\underline{ \boxed{ \sf{✰\: Concept }}}[/tex]
➣ Given two paris are linear pairs➣ We know that sum of linear pairs is equal to 180⁰➣ Linear :- Having the form of a line; straight or roughly straight; following a direct course.[tex] \large\underline{ \boxed{ \sf{✛\: Assumptions\:✛ }}}[/tex]
➣ let given two angles be p and q that is ➣ angle p is 3x-4➣ angle q is 3x-8➣ we have to find "x" in the given expressions[tex] \large\underline{ \boxed{ \sf{✰\: let's\:solve }}}[/tex]
[tex] \rm\angle \: p + \angle \: q = 180 \degree \\ [/tex]
★ Substituting values
[tex] \rm { \pink➾ \:( 3x - 4) + (3x - 8) = 180} \\ \rm { \pink➾}arranging \: and \: solving \: like \: terms \\ \rm { \pink➾ \: 3x + 3x - 4 - 8 = 180} \\ \rm { \pink➾ \: 6x - 12 = 180} \\ \rm { \pink➾6x = 180 + 12}[/tex]
[tex] \qquad \qquad\rm { \pink➾6x = 192} \\ \qquad\qquad\rm { \pink➾ \: x = \frac{ \cancel{192}}{ \cancel6} } \\ \qquad\qquad\rm { \pink➾x = 32}[/tex]
★ Hence the value
[tex] \boxed{↪\underline{ \boxed{ \rm{\: x = 32\green✓}}}↩}[/tex]
[tex] \rule{70mm}{2.9pt}[/tex]
Hope it helps !
hi I need help with this question
Answer:
x=49 exactly but a i forgot how to get range sry
Step-by-step explanation:
can someone help me with this?
Thank you!
Which expression is equivalent to square root 36/25
Answer:
6/5
Step-by-step explanation:
hope this helps
This number line models the division problem 1/3÷6 . What is the quotient? Enter your answer as a fraction in simplest form by filling in the boxes.
Answer: 1/200
Step-by-step explanation:
1/6 divided by 6 is equal to 0.05555555555 Which is equal to about 1/200
f(x) = |x − 5| + 2 Which of the following statements about the y-values of the graph of the function is true?
The answer will be option B. The y-values are all greater than or equal to 2.
What is a function?A function in mathematics set up a relatioship between the dependent variable and independent variable. on changing the value of the independent variable the value of the dependent variable also changes.
Here no matter what x is, y will always be positive, because the absolute value of x-5 will always be positive. The smallest value that y can be is when x is 5, because then the absolute value of x-5 is 0, and then y is 2.
Therefore, the correct answer will be option B. The y-values are all greater than or equal to 2.
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An airplane flight has 207 seats. the probability that a person who buys a ticket actually goes on that flight is about 90%. if the airline wants to fill all the seats on the flight, how many tickets should it sell?
Answer:
230 tickets
Step-by-step explanation:
Create a proportion using the given information:
Let's set x equal to the number of tickets that need to be sold.
[tex]\frac{207}{90} =\frac{x}{100}[/tex]
Cross multiply and you get:
[tex]90x=20700\\[/tex]
Then divide both sides by 90 to get:
[tex]x = 230[/tex]
This means that 230 tickets need to be sold in order to fill all of the seats on the flight.
find the value of the missing variables. please help
x=
y=
Answer:
X= 11
Y= 22
Step-by-step explanation:
How to find Y ?
sin 60° = 11√3/ Y
√3/2 = 11√3/Y
Y= 22
How to find X ?
cos 60° = x/22
1/2 = x/22
2x = 22
x = 11
Simplify 6 plus the square root of negative 80.
The given statement can be written as:
6+√-80
To solve √-80 re-write -80 as -1 * 80
Now √-80 =√-1 * 80
Now we can write it as:
6+ √-1 * √80
We know that √-1 = i
Thus it becomes:
6+ i√80
Now find the square root of 80
80 does not have a perfect square root
Its square root can be found as 80 = 4*4*5
Then,
6+i√4*4*5
Notice that 4 makes a pair.. So we will write it outside the square root
6+1*4√5
We will write it as:
6+4i√5
Thus the correct option is 6 plus 4 i times the square root of 5....