Answer: B
Step-by-step explanation:
It’s 168 because to solve problems for the area of a reduced or enlarged figure, first square the scale factor. Then use the given dimensions to find the area of the original figure. Multiply the square of the scale factor by the area of the original to get the reduced or enlarged figure.
Answer:
D 558
Step-by-step explanation:
A chef is going to use a mixture of two brands of Italian dressing. The first brand contains 8% vinegar, and the second brand contains 13% vinegar. The chef wants to make 270 milliliters of a dressing that is 9% vinegar. How much of each brand should she use
Answer:
Amount of 8% vinegar = 216 mL
Amount of 13% vinegar = 54 mL
Step-by-step explanation:
First, of all, let x be the amount of 8% vinegar used
Since, the scientist needs 270 mL of vinegar, then;
Let 270 - x be the amount of 13% vinegar used
Now, we are told that she needs 270 mL of a 9% vinegar.
This means that;
8%x + 13%(270 - x) = 9%(270)
Simplifying this gives;
0.08x + 0.13(270 - x) = 0.09 × 270
Expanding the bracket gives;
0.08x + 35.1 - 0.13x = 24.3
0.13x - 0.08x = 35.1 - 24.3
0.05x = 10.8
x = 10.8/0.05
x = 216 mL
Thus, she will need to use 216 mL of the 8% vinegar.
Since 270 - x is the amount of 13% vinegar used , then;
the amount of 13% vinegar = 270 - 216 = 54 mL
I need help with this geometry question.
Answer:
Step-by-step explanation:
a). There are 8 points in the figure attached.
b). There are 9 lines in the given figure.
c). There are 5 planes in the figure attached.
d). Three collinear points are D,G and F.
e). Four co-planar points are G, F, H and C.
f). Intersection of planes ABC and ABE is the common line AB.
g). Intersection of planes BCH and DEF is the common line EF.
h). Intersection of AD and DF is a point D.
What is the speed of a train that travels 52 kilometers in 3 hours?
Answer:
17 km/h
Step-by-step explanation:
52:3=17.3≈17 km/hour
Answer:
17 km/hr
Step-by-step explanation:
Speed=
[tex] \frac{distance}{time} [/tex]
so, since the units are the same, kilometer per hour and hour, we simply divide
that's
[tex] \frac{52}{3} [/tex]
and that's 17.333 approximately 17km/hr
43. Can you place ten lumps of sugar in three empty cups so that
there is an odd number of lumps in each cup?
Answer: No.
Step-by-step explanation:
We have 10 lumps of sugar, and we want to divide them into 3 cups, in such a way that there is an odd number of lumps in each cup.
This only can happen if we have 3 odd numbers such that the addition is equal to 10.
Now 10 is an even number, remember that even numbers can be written as:
2*k
where k is an integer number.
And odd numbers can be written as:
2*n + 1
where n is an integer.
Then we have 3 odd numbers, let's call them:
(2*n + 1), (2*k + 1) and (2*p + 1).
Now let's add them:
(2*n + 1) + (2*k + 1) + (2*p + 1).
2*(n + k + p) + 1 + 1+ 1
2*(n + k + p) + 2 + 1 =
2*(n + k + p + 1) + 1.
Now, the number n + k + p + 1 is an integer number, let's call it X, then we have that the addition of the 3 odd numbers is:
2*X + 1
This is an odd number
So for any 3 odd numbers that we add together, the result will always be an odd number.
Then is impossible to add 3 odd numbers and get 10 as the result (Again, 10 is an even number).
Then is not possible to have an odd number of lumps in each cup.
a box shaped like a rectangular prism has a length of 8 inches and a width of 8 inches. its volume is 512 cubic inches. what is the height of the box
Answer:
8 inches
Step-by-step explanation:
the volume is length x width x height
so the equation would be 8 x 8 x (height) = 512
8x8 is 64, and you divide 512 by 64 which is 8
Answer:
16
Step-by-step explanation:
Write an algebraic expression for 1 more than the quotient of n and 2
Answer:
1 + n/2 or n/2 + 1
Answer:2/n
Explanation:
Quotient just means "divide", so this would just be equal to
2/n
Hope this helps!
Steven earns extra money babysitting. He charges $33.75 for 5 hours and $54.00 for 8
hours.
Enter an equation to represent the relationship. Let x represent the number of hours
Steven babysits and y represent the amount he charges.
The equation is y =
Answer:
y = 6.75x
Step-by-step explanation:
These 2 pieces of information can be used to create 2 points on the graph, where x is the number of hours and y is the amount he charges:
(5, 33.75) and (8, 54) are the 2 points
Use rise/run (y2 - y1) / (x2 - x1) to find the slope
(54 - 33.75) / (8 - 5)
20.25/3
= 6.75
Now, plug this and another point into y = mx + b to find b, the y intercept
54 = 6.75(8) + b
54 = 54 + b
0 = b
So, the equation is y = 6.75x
a florist sells bouquets that use Rose's and carnations in a ratio of 2 to 7. she receives a shipment of 343 carnations. how many Rose's will the florist need?
Answer: 98 roses
Step-by-step explanation: 2:7 is like x:343
343 divided by 7 is 49, so that is what you multiply 2 by to get the roses. 49 x 2 = 98
Answer:
343÷7×2=98
98 roses
The ratio of flowers is 7 to 2. The answer is question 98
f(x)= 1 / x-3 g(x)= 3x + 1/x A. Use composition to prove whether or not the functions are inverses of each other. B. Express the domain of the compositions using interval notation. Please answer this worth 20 points
Step-by-step explanation:
(A) To find inverse of f(x) = y = 1 / x - 3 :
Transform in terms of x
y = 1 / x - 3
x - 3 = 1 / y
x = 3 + 1 / y
Exchange x with y :
[tex] {f}^{ - 1} (x) = 3 + \frac{1}{x} [/tex]
Therefore, g(x) is not inverse of f(x) and vice versa.
(B)
Domain of f(x) = R - {3}
Domain of g(x) = R - {0}
can you please help me
Answer:
12
Step-by-step explanation:
find the equation of the line containing the point (-3,5) and having slope: 4
a) y=4x-7
b) y=4x
c) y=-4-24
d) y=4x+17
e) none of the above
Answer: d) y=4x+17
remember y=mx+b
good luck
3. Find the midpoint between the following points. (-2,-5) and (-3,1)
Answer:
Step-by-step explanation:
(x₁, y₁) = (-2 , -5) & (x₂ , y₂) = (-3 , 1)
Midpoint = [tex](\frac{x_{1}+x_{2}}{2},\frac{y_{1}+y_{2}}{2})[/tex]
[tex]=(\frac{-2 + [-3]}{2} ,\frac{-5 + 1}{2})\\\\\\=(\frac{-5}{2} , \frac{-4}{2})\\\\=(-2.5, -2)[/tex]
How are operations with variables like operations with real numbers?
Answer:
The relation between inputs and outputs is given by an equation called the equation of function. Since the outputs are also real values, hence, reasoning by analogy, you may use the arithmetical operation between functions (addition, subtraction, multiplication, division) to produce new functions.
What is -3 1/2+ 2 1/3
Answer:
-1.16666666667
Step-by-step explanation:
Answer:
-1 1/6
Step-by-step explanation:
Charlie and Clare are playing a number-guessing game. Charlie picked two numbers between 1 and 5. To win the game, Clare must guess both his numbers in three tries. Her guesses, simulated using a random-number generator, are shown in the table. If Charlie’s numbers are 1 and 3, what is the experimental probability that Clare won?
The experimental probability is 3/10 that Clare won if Charlie's numbers were 1 and 3
What is probability?The probability is defined as the possibility of an event is equal to the ratio of the number of favorable outcomes and the total number of outcomes.
Charlie picked two numbers between 1 and 5
So the numbers should be 2, 3, and 4
There is the number of favorable outcomes is 3
To win the game, Clare must guess both his numbers in three tries
The experimental probability that Clare won if Charlie's numbers were 1 and 3 = P(E)
There are 10 trials given
There are total number of possible outcomes is 10
So the required experimental probability P(E) = favorable outcomes/total outcomes
⇒ P(E) = 3/10
Hence, the experimental probability is 3/10 that Clare won if Charlie's numbers were 1 and 3.
Learn more about the probability here:
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Answer: 3/10
Step-by-step explanation:
Suppose statement p is true but statement q is false. Which of these compound statements are true? Check all that
apply.
p ^ q
p V q
p -> q
q -> p
p<-> q
q <-> q
Answer:
b and d
Step-by-step explanation:
Answer:
Your answer would be p V q and q->p. Hope I helped :D
Solve the following system of equations using the elimination method.
6x + 7y = 10
–8x – 14y = –4
Question 3 options:
A)
(3,–8)
B)
(4,–2)
C)
(–4,6)
D)
(7,–3)
Answer:
Step-by-step explanation:
12x + 14y = 20
-8x - 14y = -4
4x = 16
x = 4
6(4) + 7y = 10
24 + 7y = 10
7y = -14
y = -2
(4, -2)
the solution is B
You and Anthony are having a swimming race. You can swim 4 meters per minute, and Anthony can swim 4.5 meters per minute. You start at the same time. After how many minutes will Anthony be ahead of you 2 meters?
Answer:
4 minutes
Step-by-step explanation:
Given that:
Person 1's speed = 4 meters per minute
Anthony's speed = 4.5 meters per minute
To find:
In how many minutes, Anthony will be 2 meters ahead ?
Solution:
Let the time taken = [tex]t[/tex] minutes
Distance covered by 1st person = D meters
Distance covered by Anthony = (D + 2) meters
Formula:
Distance = Speed [tex]\times[/tex] Time
For 1st person:
[tex]D = 4 \times t[/tex] ....... (1)
For Anthony:
[tex]D+2 = 4.5 \times t[/tex]
Using first equation:
[tex]4t + 2 = 4.5t\\\Rightarrow 0.5t = 2\\\Rightarrow \bold{t = 4\ minutes}[/tex]
So, in 4 minutes, Anthony will be 2 meters ahead of the first person.
Given that 110ₓ = 40₅ , find the value of x.
Answer:
is therr more to that question
Step-by-step explanation:
Answer:
x = 4
Step-by-step explanation:
110ₓ = 40₅ --------- change all to base ten.
the system called binary
1x²+1x ¹+0x⁰ = 45¹+0*5⁰
x² + x + 0 = 20
x² + x – 20 = 0
solve x using Quadratic equation
-1 ± [tex]\sqrt{1^2 - 4 * 1 * (-20)}[/tex]
x = ------------------------------------
2 * 1
x = -5; x = 4
therefore, x = 4
Carlos gets in a taxi that charges.20 per mile and initial charge of $1.00. Write an expression that Carlos could use to help him determine the total
cost of his trip where x represents the number of miles.
Answer: .20x+1.00
Step-by-step explanation:
If G is a 3 x 4 matrix and H is a 4 x 3 matrix, what is the dimension of GH?
The table shows the time Merrida spent driving and the number of miles she drove. She drove the same number of miles each hour. How many miles did she travel each hour? • 23 miles per hour • 35 miles per hour • 42 miles per hour • 53 miles per hour
Answer:
35 miles per hour
Step-by-step explanation:
175 -140 = 35
35/1 = 35
Answer:
35
Step-by-step explanation:
5xy – 3z when x = -2, y = 4, z = 6
Answer:
-58
Step-by-step explanation:
If we have the expression [tex]5xy-3z[/tex] and we know the values of x, y, and z, we can substitute inside the equation to find it's value.
[tex]5\cdot-2\cdot4 - 3\cdot6\\\\-40 - 18\\\\-58[/tex]
Hope this helped!
Answer: -58
Step-by-step explanation:
Fill it in to get (5)(-2)(4) - (3)(6) which is -40 - 18 = -58
What is the value of the expression below when y 8 and z = 8? 9y + 3z
Answer:
96
Step-by-step explanation:
8y+3z
9(8)+3(8)
72+24
96
h - 20/j = k solve for j
Answer: j = 20/k-h
Step-by-step explanation: Multiply to remove your variable from your denominator.
I hope this helps you out.
The width of a rectangle is 2 units shorter than half the length x write an expression that represents the perimeter of the rectangle
Answer:
3x-4
Step-by-step explanation:
Length = x
width = 2 units shorter than half the length x
width = x/2 - 2
For rectangle
perimeter = 2(length + width)
Perimeter for given rectangle = 2(length + width)
Perimeter for given rectangle = 2(x + x/2 - 2) = 2x + 2x/2 -4
Perimeter for given rectangle = 2x+x -4 = 3x -4
Expression that represents the perimeter of the rectangle is 3x-4.
i need help with this math question please :)
Answer: 9/16
Step-by-step explanation:
Answer: 9/16
Step-by-step explanation: (1/4)^2 turns into 1/16. 5/8 - 1/16 so make them have the same denominator. 5/8 x 2 = 10/16 - 1/16 = 9/16
a town Pharmacy in hospital is doing it as a part of format of the town has a scale 18840.35 miles what is the distance between the pharmacy in the hospital on the map in inches pharmacy in hospital is doing it as a part it’s a map of the town has a scale where 1inch = 0.25 miles what is the distance between the pharmacy in the hospital on the map in inches
Answer:34344e4365655.6
Step-by-step explanation:
The formula for average speed when traveling a distance of ddd over a time ttt is \dfrac dt
t
d
start fraction, d, divided by, t, end fraction.
Jeff and Cameron are arguing about which one of them is faster. Jeff says "I can run 777 kilometers per hour!" and Cameron says "I can run 100100100 meters per minute!"
Answer:
Jeff is faster
Step-by-step explanation:
kilometers are faster than meters
and 7 kilometers is 700 meters
so 100 meters isn't fast enough compared to Jeff's speed
Jeff is faster than Cameron as his average speed is more than that of Cameron's average speed.
How to calculate the average speed of a body?The average speed of a body is the ratio of the distance covered by the body to the time it takes to cover that distance.
How to solve the given question?In the question, we are given that Jeff says that he can run 7 kilometers per hour while Cameron says that he can run 100 meters per minute.
We are asked to tell who is the faster among them.
We need to know that, 1 kilometer = 1000 meters, and 1 hour = 60 minutes.
Jeff's average speed = 7 km/hr. = 7km/1hr = (7*1000) m / (1*60) min
or, Jeff's average speed = 7000/60 meters per minute = 116.67 meters per minute.
We are given that Cameron's average speed is 100 meters per minute.
So, we can say that Jeff is faster than Cameron, as
Jeff's average speed > Cameron's average speed.
∴ Jeff is faster than Cameron as his average speed is more than that of Cameron's average speed.
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Write the phrase as an algebraic expression. A number less than eight and two thirds HELP ME
The picture is the answer
The algebric expression of the given phrase will be x < 8 + 2/3.
What is an expression?A mixture of variables, numbers, addition, subtraction, multiplication, and division are called expressions.
A statement expressing the equality of two mathematical expressions is known as an equation.
As per the given phrase,
A number less than eight and two thirds
Suppose that number is x then,
x < 8 + 2/3
Hence "The algebric expression of the given phrase will be x < 8 + 2/3".
To learn more about expression,
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