Answer:
Explanation is given below.
Step-by-step explanation:
Given:
Number of Trumpets = 40
Number of tubas = 35
Carlee says, the ratio of trumpets to tubas = 40 : 35
Danny says, the ratio of trumpets to tubas = 8 : 7
To explain why the two ratios are equivalent.
Solution:
Equivalent ratios are all ratios which are equal to each other in their reduced to simplest form.
The ratio of trumpets to tubas can be given as = [tex]\frac{40}{35}[/tex]
To reduce the ratio to its simplest form, we divide both numbers by their G.C.F.
The G.C.F. for 40 and 35 is 5.
So, we divide numerator and denominator by 5.
⇒ [tex]\frac{40\div5}{35\div 5}[/tex]
⇒ [tex]\frac{8}{7}[/tex]
Thus, the simplest ratio of trumpets to tubas can be given as = 8:7
This is why both Danny and Carlee are correct with the ratios of trumpets to tubas.
Carlee gave the direct ratio, while Danny gave the simplest ratio.
what is 3.40425532 reduced
Given f(x) = x − 7 and g(x) = x2 Find f(g(4)). f(g(4)) =
Step-by-step explanation:
Given f(x) = x − 7 and g(x) = x2 .
Find g(f(4)).
f(x) = x-7
g(x) = x^2
f(4) = 4-7 = -3
g(f(4)) = (-3)^2
(-3)^2 = 9
g(f(4)) is 9
Find f(g(4)).
f(g(4)) = f(g(4)) = 9
Find g(f(−1)).
g(f(−1)) = 64
Find f(g(−1)).
f(g(−1)) = -6
Composition of the functions is sometimes commutative.
hope this helps!! have an amazing day <3
2021 edg
The first figure is dilated to form the second figure.
Which statement is true?
The scale factor is 0.25.
The scale factor is 4.
The scale factor is 4.35.
The scale factor is 7.25.
A diamond with a side length of 5.8. An arrow points to a smaller diamond with a side length of 1.45
Answer:
The scale factor is 0.25.
Step-by-step explanation:
We have two side lengths.
First figure: A diamond with a side length of 5.8
This is the object length.
Second figure: Then a smaller diamond with a side length of 1.45
This is the image length.
The scale factor is
[tex]k = \frac{image \: length}{object \: length} [/tex]
[tex]k = \frac{1.45}{5.8} [/tex]
[tex]k = 0.25[/tex]
0.25 hope this helps
if 4x + 2 equals 4 what is the value of 2x + 1
To find the value of 2x + 1, we first solved for x in the equation 4x + 2 = 4, which yielded x = 1/2. Substituting this value into 2x + 1, the final answer is 2.
Explanation:The question seeks a solution for the value of 2x + 1 given that 4x + 2 = 4. We start by solving for x in the initial equation. Subtract 2 from both sides to get 4x = 4 - 2, which simplifies to 4x = 2. Dividing both sides by 4 yields x = 2 / 4, which simplifies to x = 1/2. Now that we have the value of x, we substitute it into the expression 2x + 1. So, 2(1/2) + 1 equals 1 + 1, which equals 2.
To find the value of 2x + 1, we need to determine the value of x first. Given that 4x + 2 = 4, we can start by subtracting 2 from both sides to isolate the 4x term. This gives us 4x = 2. Next, we divide both sides by 4 to solve for x. So x = 2/4 = 1/2.
Now that we know the value of x, we can substitute it into the expression 2x + 1. Plugging in x = 1/2, we get 2(1/2) + 1 = 1 + 1 = 2.
Therefore, the value of 2x + 1 is 2.
Given the equation y=-1/3x-7, what are the slope and the y-intercept?
Answer: slope is -1/3 and the y intercept is -7
Step-by-step explanation:
Solve please!
−3(x+5)=−9
To solve this, you need to isolate/get the variable "x" by itself in the equation:
-3(x + 5) = -9 Distribute/multiply -3 into (x + 5)
(-3)x + (-3)5 = -9
-3x - 15 = -9 Add 15 on both sides
-3x - 15 + 15 = -9 + 15
-3x = 6 Divide -3 on both sides to get "x" by itself
[tex]\frac{-3x}{-3} =\frac{6}{-3}[/tex]
x = -2
I just realized I took unnecessary steps....you could've just divided -3 then subtracted 5
-3(x + 5) = -9 Divide -3 on both sides [two negative signs cancel each other out and become positive]
x + 5 = 3 Subtract 5
x = -2
Find the distance between the points (2,8) and (-1,9)
Use the distance formula: D=sqrt((x2-x1)^2+(y2-y1)^2)
Plug in:
D=sqrt((9-8)^2+(-1-2)^2)
D=sqrt(1^2+(-3)^2)
D=sqrt(1+9)
D=sqrt(10)
So the distance is about 3.16 units
Hope this helped!
Which expression has a negative value?
A. -1×-2
B. 1×−2×−3×−4×−5
C. −1×2×−3×4×−5
D. 1×−2×3×−4×5
Please answer correctly! Oh, and fail to satisfy me with your answer will result in someone being reported.
The expression -1 × 2 × -3 × 4 × -5 has a negative value ⇒ C
Step-by-step explanation:
Let us revise the products of negative and positive
(+) × (+) = (+)(-) × (-) = (+)(-) × (+) = (-)(+) × (-) = (-)The product of three (-) is (-) ⇒ -2 × -3 × -1 = -6 (-2 × -3 = 6 × -1 = -6)The product of four (-) is (+) ⇒ -2 × -3 × -1 × -4 = 24 (-2 × -3 = 6 × -1 = -6 × -4 = 24)If there are even negative signs, then the product will be positiveIf there are odd negative signs, then the product will be negativeA. -1 × -2
∵ There are two negative signs
∵ 2 is an even number
∴ -1 × -2 has a positive value
B. 1 × -2 × -3 × -4 × -5
∵ There are four negative signs (-2 , -3 , -4 , -5)
∵ 4 is an even number
∴ 1 × -2 × -3 × -4 × -5 has a positive value
C. -1 × 2 × -3 × 4 × -5
∵ There are three negative signs (-1 , -3 , -5)
∵ 3 is an odd number
∴ -1 × 2 × -3 × 4 × -5 has a negative value
D. 1 × -2 × 3 × -4 × 5
∵ There are two negative signs (-2 , -4)
∵ 2 is an even number
∴ 1 × -2 × 3 × -4 × 5 has a positive value
The expression -1 × 2 × -3 × 4 × -5 has a negative value
Learn more:
You can learn more about the directed numbers in brainly.com/question/10364988
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Sarai is mixing a solution. She pours all the liquid from a full small beaker into a larger beaker. The liquid fills the large beaker to 15% of its capacity. If the small beaker holds 300 mL, how much does the large beaker hold?
Answer:
2000 ml
Step-by-step explanation:
Given: Sarai pours all the liquid from a full small beaker into a larger beaker.
The liquid fills the large beaker to 15% of its capacity.
The small beaker holds 300 ml.
Lets assume capacity of large beaker to hold be "x".
As given, Sarai pours all the liquid from a full small beaker into a larger beaker
∴ [tex]15\% \times x= 300\ ml[/tex]
⇒ [tex]0.15x= 300[/tex]
Dividing both side by 0.15
⇒[tex]x= \frac{300}{0.15}[/tex]
∴ [tex]x= 2000\ ml[/tex]
Hence, the large beaker can hold 2000 ml of liquid.
True or false 4.62 < 4.67
True, 4.62 is less than 4.67
With a simple interest rate of 12%, how much will an investment of $20,000 be worth in 10 years
Answer:
$24,000
Step-by-step explanation:
If each year you get 12% of interest 20,000 dollars x 0.12 = 1 year worth of interest or $2400 then if its over a 10 year span it would be $2,400 x 10 (amount of years) = $24,000
Answer: $44,000
Step-by-step explanation:
Both circle A and circle B have a central angle measuring 50°. The area of circle A's sector is 36π cm2, and the area of circle B's sector is 64π cm2. Which is the ratio of the radius of circle A to the radius of circle B?
A) 3/4
B) 3/7
C) 4/3
D) 5/7
Answer:
A) 3/4
Step-by-step explanation:
Given: Both circle A and circle B have a central angle measuring 50°.
The area of circle A's sector is 36π cm2.
The area of circle B's sector is 64π cm2.
We know, area of the circle= [tex]\pi r^{2}[/tex]
lets assume the radius of circle A be "[tex]r_1[/tex]" and radius of circle B be "[tex]r_2[/tex]"
As given, Area of circle A and B´s sector is 36π and 64π repectively.
Now, writing ratio of area of circle A and B, to find the ratio of radius.
⇒[tex]\frac{\pi r_1^{2} }{\pi r_2^{2} } = \frac{36\pi }{64\pi }[/tex]
Cancelling out the common factor
⇒ [tex]\frac{r_1^{2} }{r_2^{2} } = \frac{36 }{64}[/tex]
⇒ [tex](\frac{r_1 }{r_2} )^{2} = \frac{36 }{64}[/tex]
Taking square on both side.
Remember; √a²= a
⇒ [tex](\frac{r_1 }{r_2} ) =\sqrt{ \frac{36 }{64}}[/tex]
⇒ [tex](\frac{r_1 }{r_2} ) = \frac{6}{8}[/tex]
⇒[tex]\frac{r_1 }{r_2} = \frac{3}{4}[/tex]
Hence, ratio of the radius of circle A to the radius of circle B is 3:4 or 3/4.
The - - - - - - - - - - - - - - - -,f(x)=x, is formed by the composition of a function and its inverse (2 words)
Answer:
Identity function
how much do u need to subtract from 41/6 to make 6
PLS HELP! WILL MAKR BRAINLIEST AND GIVE 20 POINTS!!!!
Answer:
See attached table for the answers.
Step-by-step explanation:
Because 1/4 inches is 2 feet, 1 inch is 8 feet, making the conversion factor x8.
Answer:
The scale factor is 1/4 inch to 2 feet but can be simplified to 8 feet per inch.
1. Lobby drawing length is 2 inches.
2. Principal's Office actual length is 10 feet.
3. The library's drawing length is 2.5 inches.
4. The science lab's actual length is 12 feet.
5. The cafeteria's drawing length is 6 inches.
6. The music room's actual length is 32 feet.
8. The gym's actual length is 104 feet.
9. The auditorium's drawing length is 7 inches.
10. The teachers' lounge's actual length is 14 feet.
I hope this helped you. If you would mark brainliest that would be appreciated.
A regular pentagon is dilated by a scale factor of 73 to create a new pentagon. How does the perimeter of the new pentagon compare with the original perimeter?
Question:
A regular pentagon is dilated by a scale factor of 7/3 to create a new pentagon. How does the perimeter of the new pentagon compare with the original perimeter?
Answer:
The perimeter of the new pentagon is equal to [tex]\frac{7}{3}[/tex] times the perimeter of the original pentagon
Solution:
If two figures are similar, then the ratio of its perimeters is equal to the scale factor
Let ,
z is the scale factor
x is the perimeter of the new pentagon
y is the perimeter of the original pentagon
Then,
Scale factor = ratio of perimeters
[tex]z=\frac{x}{y}[/tex]
In this problem we have
[tex]z=\frac{7}{3}[/tex]
Substituting we get,
[tex]\frac{7}{3} = \frac{x}{y}\\\\x = \frac{7}{3}y[/tex]
Which means,
[tex]perimeter\ of\ the\ new\ pentagon = \frac{7}{3} \times \text{ perimeter of the original pentagon}[/tex]
Therefore , the perimeter of the new pentagon is equal to [tex]\frac{7}{3}[/tex] times the perimeter of the original pentagon
Find the sine...... Pls
Answer:
72/97
Step-by-step explanation:
Sinus is calculated by dividing opposite by hypotenuse so the answer is 72/97
Answer:
72/97
Step-by-step explanation:
Sin(X) = opposite/hypotenuse
Sin(X) = 72/97
What is the square root of 81
Answer:9
Step-by-step explanation:
Remember, 9•9=81, that’s how you know what the square root is.
Answer:
9
Step-by-step explanation:
Luna mixes 2 cup of orange juice with 2 cup of cranberry juice. She gives
cup of the juice to Mags. How much is left in Luna's glass?
- The lengths (in feet) of the sides of a pentagon can be represented by these
expressions: 6a, a, 4, 8, and 2a. Write a simplified expression for the perimeter
of the pentagon in feet.
Answer:
9a+12
Step-by-step explanation:
The perimeter is the sum of the side lengths, so is ...
6a + a + 4 + 8 + 2a
= a(6 +1 +2) + (4 +8)
= 9a +12
When rolling a number cube numbered 1 to 6, how would you describe the chances of rolling a number greater than or equal to 3 versus rolling a number less than 3?
A. more likely to roll a number greater than or equal to 3
B. more likely to roll a number less than 3
C. equally likely events
D. none of the above
Bonds are a(n) _______________ instrument.
Answer:
indebtedness
Step-by-step explanation:
What two numbers multiply to -27 and add to 1
Answer:
3 x 9, 1 x 27, 9 x 3
Step-by-step explanation:
you have to multiple 3 x 9 to get to 27. you have to multiple 1 x 27 to get 27. you have to multiple 9 x 3 to get 27.The two numbers that multiply to -27 and add to 1 are 9 and -3.
To find two numbers that multiply to -27 and add to 1, we can use the method of factoring and algebraic manipulation.
Let the two numbers be x and y.
Step 1: Set up the equations based on the given conditions:
xy = -27 (the two numbers multiply to -27)
x + y = 1 (the two numbers add to 1)
Step 2: Solve one of the equations for one variable in terms of the other.
From the second equation, we can express y in terms of x:
y = 1 - x
Step 3: Substitute the value of y into the first equation:
x(1 - x) = -27
Step 4: Expand and rearrange the equation:
x - x^2 = -27
Step 5: Rewrite the equation in standard quadratic form:
x^2 - x - 27 = 0
Step 6: Factor the quadratic equation:
(x - 9)(x + 3) = 0
Step 7: Set each factor equal to zero and solve for x:
x - 9 = 0 --> x = 9
x + 3 = 0 --> x = -3
So, the two numbers are 9 and -3, as 9 * -3 = -27, and 9 + (-3) = 1.
In conclusion, the two numbers that multiply to -27 and add to 1 are 9 and -3. By setting up and solving the system of equations and factoring the quadratic equation, we obtained these two values that satisfy the given conditions.
To know more about multiply:
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1 > 5 (b - 14) + 16 help me please
Answer:
b < 11
Step-by-step explanation:
Given
1 > 5(b - 14) + 16 ← distribute and simplify right side
1 > 5b - 70 + 16
1 > 5b - 54 ( add 54 to both sides )
55 > 5b ( divide both sides by 5 )
11 > b, thus
b < 11
A total of $5500 was invested in two accounts. Part was invested in a CD at 2% annual
interest rate and part was invested in a money market fund at 3% annual interest rate. If
the total simple interest for one year was $250, then how much was invested in each
account?
PLEASE HELP ! Trying to make honor roll !
Which point represents the solution to the system of equations below?
Answer:
B
Step-by-step explanation:
Because it is higher than the others and also includes the number 2, as it says in the fraction and is located in 1/2
Answer:
Point A
Step-by-step explanation:
You already know y is -2. Just substitute that to the top equation and solve for x. X would be -4.
(-4, -2)
Find the point on the graph and you'll see it falls on point A.
Point e is between points D and F. If DE = x-4, EF= 2x+5 and DF= 4x-8 find x
Which expression represents the phrase the sum of twice a number and 7
Answer:
2n+7
Step-by-step explanation:
What is the answer
Answer:
A
Step-by-step explanation:
Move the entire triangle left 6 units.
Answer: A
Step-by-step explanation:
Which statement is best supported by the dot plot? Choose ONE and explain your
answer.
I. The range of the number of miles Amanda skated in August is less than the range
of the number of miles she skated in July.
II. The distribution of data is approximately symmetrical in both sets of data.
III.The mode of the number of miles Amanda skated in July is equal to the mode of
the number of miles skated in August.
Answer:
The statement that is best supported by the dot-plot is iii)
The mode of the number of miles Amanda skated in July is equal to the
mode of the number of miles skated in August.
This is a true statement.
The mode of the number of miles Amanda skated in July is equal to 1.
The mode of the number of miles Amanda skated in August is equal.
Step-by-step explanation:
i) The range of the number of miles Amanda skated in August is less than the
range of the number of miles she skated in July.
This is a true statement.
the range of the number of miles Amanda skated in August is 1 to 3
the range of the number of miles Amanda skated in July is 1 to 4
ii) The distribution of data is approximately symmetrical in both sets of data.
This is NOT a true statement.
the distribution of data of the number of miles Amanda skated in August
is not symmetrical.
the distribution of data of the number of miles Amanda skated in August
is approximately symmetrical.
iii) The mode of the number of miles Amanda skated in July is equal to the
mode of the number of miles skated in August.
This is a true statement.
The mode of the number of miles Amanda skated in July is equal to 1.
The mode of the number of miles Amanda skated in August is equal.