Can somebody plz help answer these questions correctly! (only if u know it) thanks!!<3
WILL MARK BRAINLIEST WHOEVER ANSWERS FIRST!!!:DD
Answers
Answer:
18-Yes 19-No 20-yes 21- yes
Step-by-step explanation:
18
1 to 4, 5 to 20
Yes, this is correct
WE can multiply 1*5 and 4*5 to get 5 to 20
19
Wrong
3 to 11, 1 to 3 isn't correct
For example, if we were to divide 3 by 3 to get one, 11/3 is 2. (6)
So, no
20
2/3 is 2 to 3
14/21 is 14 to 21
If we multiply 2*7 and 3*7, we get 14 to 21
21 25 to 30 is equal to 35 to 42
They just added 7 to both numbers
if we divide ratio 1 by 5, we get 5:6
if we divide ratio 2 by 7 we get 5 to 6
19. No
20. Yes
21. I think so
Related Questions
What is the median age
Answers
Find the sum of 2√5 and 3√16 in simplest form. Also, determine whether the result is rational or irrational and explain your answer
Answers
Answer:
2√5 +12 or 16.47213595....
Step-by-step explanation:
Part A - The sum of 2√5 and 3√16 in its simplest form is 2(√5 + 6).
The given numbers are surds.
To find the sum of 2√5 and 3√16, we perform the arithmetic operation of addition on the surds.
So, 2√5 + 3√16 = 2√5 + 3 × 4 (√16 = 4)
2√5 + 3√16 = 2√5 + 12
Factorizing out the factor 2 from both expressions, we have
2√5 + 3√16 = 2√5 + 6 × 2
2√5 + 3√16 = 2(√5 + 6)
So, the sum of 2√5 and 3√16 in its simplest form is 2(√5 + 6).
Part B - The result is irrational.
The result is irrational because 2(√5 + 6) cannot be expressed as a ratio of two integers since √5 is irrational and √5 + 6 is irrational and thus 2(√5 + 6) is also irrational since it cannot be expressed as a ratio of two integers. Also, its decimal representation is non-terminating or repeating.
Thus, the result is irrational.
Learn more about surds here:
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I need to know the answer
Answers
Answer:
1 solution - 6
Step-by-step explanation:
add 9 on both sides
3x = 18
divide by 3 on both sides
x = 6
u can solve them using 3 solutions
-rewrite in standard form
-rewrite in implicit form
-graphing
2.50x=15 + 1x
What is the answer
Answers
Answer:
.
Step-by-step explanation:
Answer:
If we are solving for x then the answer is x = 10
Step-by-step explanation:
To solve for x we must first get all the variables to one side
so subtract 1x from both sides
1.50x = 15
divide 1.50 both sides
x = 10
Ethan’s car averages 22 miles per gallon of gas. Predict how far he can travel on 5 gallons of gas.
Answers
Answer:
110 have a good one
Step-by-step explanation:
22x5 is 110
The cost of a car battery costs $35 wholesale for the automotive store to buy, but they need to markup the cost 40% for the retail price. How much is the markup amount? And how much is the retail price?
Answers
Answer:
The markup amount is $14 and the retail price is $49.
Step-by-step explanation:
You can use the following formula to find the retail price with the information provided:
Retail price=Cost*(100%+markup %)
Cost=35
Markup %= 40%
Now, you can replace the values in the formula:
Retail price=35*(140%)
Retail price=49
Now, you can subtract the cost from the retail price to find the markup amount:
49-35=14
According to this, the answer is that the markup amount is $14 and the retail price is $49.
You set up a hot chocolate stand at a football game. The cost of your supplies is $75. You charge $0.50 for each cup of hot chocolate. Write a function that represents the profit P for selling c cups of hot chocolate.
Answers
Answer:
P = 0.5c - 75
Step-by-step explanation:
Profit is = selling price. - cost price
Cost price is the amount the supplies were bought = $75
The cost of c cups at $0.5 per cup will be
0.5 * c = $0.5c
The profit here is thus;
P = 0.5c - 75
f (x)=5x+1 9(x)=-2x+15
Answers
Answer:
x = 0
Step-by-step explanation:
(x)=5x+19(x)=-2x+15
We move all terms to the left:
(x)-(5x+19(x))=0
We add all the numbers together, and all the variables
x-(+24x)=0
We get rid of parentheses
x-24x=0
We add all the numbers together, and all the variables
-23x=0
x=0/-23
x=0
Evaluate 5 + 3x for (a) x= -2 and (b)x= 3. Write your answers in simplest form.
Answers
Answer:
a. -1
b. 14
Step-by-step explanation:
a.
5 + 3(-2)=
5 + (-6)=
-1
b.
5 + 3(3)=
5 + 9=
14
When x = -2, the value of 5 + 3x is -1,
and when x = 3, the value of 5 + 3x is 14.
Here, we have,
given equation is: 5 + 3x
To evaluate the expression 5 + 3x for the given values of x:
(a) When x = -2:
5 + 3(-2)
= 5 - 6
= -1
(b) When x = 3:
5 + 3(3)
= 5 + 9
= 14
Therefore, when x = -2, the value of 5 + 3x is -1,
and when x = 3, the value of 5 + 3x is 14.
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What is 3.14x2/1000x3.14
Answers
Answer:
[tex]→3.14 \times \frac{2}{1000} \times 3.14 \\→ 3.14 \times 0.002 \times 3.14 \\→ \boxed{0.0197192}✓[/tex]
0.0197192 is the right answer.solve the following systems of equations.
5x+3y+4z=1
4x-7y+3z=0
x+5y-2z=-11
Answers
Answer:
x= 8
y= -5
z= 0
Step-by-step explanation:
this is the correct answer to this system of equations.
The price of a toy usually costing £20 is increased to £24
Work out the percentage increase.
Answers
Answer:
20%
Step-by-step explanation:
4/20 = 1/5
1/5 × 100 = 20
A garden is 80m long and 70m broad. A path 4m wide is to be built outside all around it along its border. Find the area of the path?
Answers
Answer:
(4 x 80) x 2 = 640 m²
(4 x70) x 2 = 560 m²
Total : 1,200 m²
Step-by-step explanation:
Landon hands out 120 flyers in 2 hours. Fernando hands out 29 flysers in 30 minutes. Which equation can be used to determine the number of flyers Fernando handed out in 2 hours?
Answers
Answer:
0.5x = 48
96 flyers
Step-by-step explanation:
Given that:
Fernando hands out 29 flyers in 30 minutes ;
Number of flyers he hands out in 2 hours ;
29 flyers = 0.5 hours
Let number of flyers he hands out in 2 hours = x
Hence,
29 flyers = 0.5 hours
x = 2
0.5x = 48 flyers
x = 48 / 0.5
x = 96 flyers
What is the 30th term in the sequence 10, 12, 14, 16, 18...?
I need help plzz
Answers
Answer:
68
Step-by-step explanation:
There are 2 ways you can do this.
1: You can count it up!
10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68!
2: You can do multiplication and addition.
2 x 30 + 8 = 68
Answer:
68
Step-by-step explanation:
the 30th term is 68
the pattern is 2n+8
2n+8
2x30+8 dont thank me thank the other guy
So for dilation when it says to dilate 1/3 how do I solve that (ex. 18, 9)
Answers
Answer:
The image of A(18, 9) after dilation by a scale factor of 1/3 will be: A'(6, 3).
Step-by-step explanation:
Let suppose the given point is A(18, 9)
We know that when an object is dilated by a scale factor, it gets reduced, stretched, or remains the same, depending upon the value of the scale factor.
If the scale factor > 1, the image is enlarged If the scale factor is between 0 and 1, it gets shrunk If the scale factor = 1, the object and the image are congruentRule to calculate the dilation by a scale factor 1/3 centered at the origin
P(x, y) → P'(1/3x, 1/3y)
Here, P'(1/3, 1/3y) is the image of P(x, y).
It means the coordinates of the image can be determined by multiplying the coordinates of the original point by 1/3.Thus,
A(18, 9) → A'(1/3(18), 1/3(9)) = A'(6, 3)
Therefore, the image of A(18, 9) after dilation by a scale factor of 1/3 will be: A'(6, 3).
a bag contains 3 red marbles and 4 blue marbles.
a marble is taken at random from the bag and replaced.
another marble is taken from the bag.
work out the probability that the two marbles taken from the bag are the same colour.
give answer as a fraction.
Answers
A rectangular box has its length and width doubled and its height tripled. The volume of the new box will be
Answers
Answer:
volume of the new box = 12 x volume of the initial rectangular box
Step-by-step explanation:
Let the length, width and height of the rectangle be represented by l, w and h respectively.
The volume of a rectangle is given as;
volume = l x w x h
= lwh
From the given question, the dimension of the rectangle are:
new length = l + l = 2l
new width = w + w = 2w
new height = h + h + h = 3h
So that, the volume of the new box is given as;
volume of the new box = 2l x 2w x 3h
= 12 (lwh)
Therefore,
volume of the new box = 12 x volume of the initial rectangular box
Graph: Which of the statements are NOT true.
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the following statement is not true is number 4
Finish the following by finding what a equals.
a²+ b²= c²
a²+ 9²= 15²
a²+ 81 = 225
a² = 144
a =
Answers
Answer:
a=12 because 12^2=144
Plzzzz give me Brainliest!
Find the surface area of the prism.
The surface area is square millimeters.
Answers
Answer:
57.1mm^2
Step-by-step explanation:
4*4=16
16/2=8mm^2 cross section
(4*3) + (4*3) + (5.7*3) = 41.1mm
8*2=16
41.1+16=57.1mm^2
The surface area of the prism is S = 57.1 mm²
What is the surface area of the prism?The surface area of the prism is calculated as
The formula for the surface area of a prism is SA=2B+ph, where B, is the area of the base, p represents the perimeter of the base, and h stands for the height of the prism
Surface Area of the prism = 2B + ph
The area of the triangular prism is A = ph + ( 1/2 ) bh
Given data ,
Let the area of the 2 triangles be T
Let the area of the 2 rectangles be R
Let the area of the third side be U
Now , the total surface area of the prism = T + R + U
where T = 2 x ( 1/2 ) ( 4 x 4 )
T = 16 mm²
R = 2 x ( 3 x 4 )
R = 24 mm²
And , U = 5.7 x 3
U = 17.1 mm²
Therefore , the total surface area of prism S = 16 mm² + 24 mm² + 17.1 mm²
S = 57.1 mm²
Hence , the surface area of prism is S = 57.1 mm²
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Danielle and hector are selling raffle tickets to raise money for the school band.Danielle sells 5 tickets per day for 4 weeks straight.she then sells 4 tickets per day for 1 week.how many tickets does hector need to sell if he wants to sell mor tickets than Danielle
Answers
Answer:
more than 168 tickets
Step-by-step explanation:
4 weeks = 28 days
5 x 28 = 140
1 week = 7 days
4 x 7 = 28
140 + 28 = 168
In order for hector to sell more than Danielle he has to sell a # of tickets that is greater then 168.
2. There are two different sizes of Fanta Pinapple for you to get. The first one is a
12 oz can, and the bottle has 33% more. How much does the bottle contain
approximately?
4 OZ
0 21 oz
O 16 oz
O 19 oz
Answers
Answer:
12/100*133= 15.96
approx 16oz
A car rental agency charges 150 per week +0.45 per mile to rent car express the weekly cost to rent a car if as a function of the number of miles driven during week X
Answers
Answer:
The required function is:
[tex]C(x) = 150+0.45x[/tex]
Step-by-step explanation:
We have to represent the given scenario as an equation or function
Let x be the number of miles driven in a week
Let C(x) be the function of the number of miles driven
As it is given that charges are 150 per week, these charges are constant so they will be used as it is.
It is also given that the cost of car is 0.45 per mile so for x miles the cost will be:
0.45x
Combining both terms, we get
[tex]C(x) = 150+0.45x[/tex]
Hence,
The required function is:
[tex]C(x) = 150+0.45x[/tex]
Evaluate [(40 + 5) - 3^2] divided by 9 times 2
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PLEASE HELP! CORRECT ANSWER WILL GET BRAINLIEST
Answers
Answer:
y<1/4x+3
Step-by-step explanation:
HELP NEEDED
Thank you
Answers
Step-by-step explanation:
h×I×w
;
8×6×4
= 192
hope it helps
Sasha works for the Humane Society and had to buy food for the dogs. She buys 1614 pounds of dog food. She feeds each dog about 58 of a pound. How many dogs can she feed?
26
25
10
6
Answers
27 but 27 isn't there so do 26
Answer: A
Step-by-step explanation: because when dividing 58 into 1614 it equals 27.23 but the answer choice isn't there so i would choose 26
HelpppPppppp me if u do ill give u a pringle
Paul paid $10 for a ticket to the fair and then another $2 per ride. Write an equation to show how many rides x, Paul can take if he has $40.
2x = 40
2x - 10 = 40
10x + 2 = 40
2x + 10 = 40
Answers
Answer:
D) 2x+10=40, x= 15 rides
Step-by-step explanation:
Since Paul only bought one ticket, then $10 is the constant of the equation. Since Paul pays $2 per ride, $2 will be the rate/coefficient of the equation.
Since we are solving for x, $40 will be on the right side of the equation
Putting these three facts together, we can make the equation 2x+10=40 which means D is correct
In a survey of 2,000 people who owned a certain type of car, 1,320 said they would buy that type of car again. What percent of the people surveyed were satisfied with the car?
____% of the people surveyed were satisfied with the car.
(Type a whole number.)
Answers
Answer: Total number of those who took part in the survey (T)=2000
Those who were satisfied (t)=1320
Percentage of those who were satisfied (S)=(t/T)*100
S=(1320/2000)*100
S=66%
Therefore only 66% were satisfied
Step-by-step explanation: