Answers
Answer:
A. Substitution
Step-by-step explanation:
You have already gotten what y is in x terms, so you could plug that into the first equation and find out what y and x are
Related Questions
the part of width 4 metre is surrounded inside a Square Garden of length 60 m find the area of the path
Answers
Incomplete question. Repost the complete problem.
Your bedroom wall is 150 inches wide. You want to hang two posters, each 27 inches across, with an equal space between each poster and the wall edges.
How many inches of space should you leave between the wall edge and each poster?
Answers
Answer:
32
Step-by-step explanation:
let the space be x
x + 27 + x + 27 + x = 150
3x + 54 = 150
3x = 96
x= 32
Morgan is visiting a city and wants to take a taxi. The driver tells Morgan that they charge per kilometer and
shows this table describing their cost:
Answers
The amount it would cost Morgan to travel 13 km is £32.5
Calculating CostFrom the question, we are to calculate how much it would cost Morgan to travel 13 km
From the given table, we have that
The cost of traveling 5 km is £12.50
and
The cost of traveling 10 km is £25
First, we will determine the cost of traveling 1 km
If the cost of traveling 5 km is £12.50
Then,
The cost of traveling 1 km will be £12.50/5
£12.50/5 = £2.5
The cost of traveling 1 km is £2.5
Now,
If the cost of traveling 1 km is £2.5
Then,
The cost of traveling 13 km will be 13 × £2.5
13 × £2.5 = £32.5
Hence, the amount it would cost Morgan to travel 13 km is £32.5
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Enter the value for x that makes the equation 5 + 3x - 37 = 6x + 23 - 8x true.
Answers
Answer:
pretty sure the answer is 11
Answer:
x = 11
Step-by-step explanation:
5 + 3x - 37 = 6x + 23 - 8x
3x - 6x + 8x = 37 - 5 + 23
11x - 6x = 60 - 5
5x = 55
x = 55/5
x = 11
Thus, the value for x is 11
-TheUnknownScientist
Suppose that the weather forecast indicates a 10% chance that cold weather will reduce the citrus grower’s profit from $100,000 to $85,000 and a 10% chance that cold weather will reduce the profit to $75,000. Should the grower spend $5000 to protect the citrus fruit against the possible bad weather?
Answers
Answer:
We can think in this situation as:
There is 10% (or a probability equal to 0.1) where the citrus grower's profit will be reduced by $15,000
There is 10% (or a probability equal to 0.1) where the citrus grower's profit will be reduced by $25,000
And in the remaining 80% (or a probability equal to 0.8), the profit does not change.
Then the expected value for the total profit can be written as:
EV = $100,000 + ( 0.1*(-$15,000) + 0.1*(-$25,000) + 0.8*$0)
= $96,000
In the case where the citrus grower spends $5000 to protect the fruits against possible bad weather, there is a 100% that is profit will not change, but he must pay $5,000
Then his profit will be:
P = $100,000 - $5,000 = $95,000
So in this case, the profit is $1000 less than the expected profit in the prior case. So the scenario where he does not buy the protection has a larger expected profit, which may mean that is better to not buy it (in a straight mathematical point of view)
One also could think that the values are really close together, so buying the protection does not mean a big change, and increases the security
What is the Decimal equivalent for fraction 4/8
Answers
Answer:
I hope this helps you
Step-by-step explanation:
4/8 = 0.5
The Aluminum Association reports that the average American uses 56.8 pounds of aluminum in a year. A random sample of 51 households is monitored for one year to determine aluminum usage. If the population standard deviation of annual usage is 12.3 pounds, what is the probability that the sample mean will be more than 59 pounds _________.
a) 0.1003
b) 0.3997
c) 0.6003
d) 0.8997
e) 0.0003
Answers
Answer:
A: 0.1003
Step-by-step explanation:
We are given;
Population mean; μ = 56.8
Population size; n = 51
Population standard deviation; σ = 12.3
We want to find; P(x > 59)
We will use the z-score formula.
z = (x - μ)/(σ/√n)
z = (59 - 56.8)/(12.3/√51)
z = 1.28
From z-distribution table attached, we have; P(z < 1.28) = 0.8997
Thus;
P(z > 1.28) = 1 - 0.8997 = 0.1003
You are facing North. Turn 90 degrees left. Turn 180 degrees right. Reverse the direction. Turn 90
degree left Reverse the direction. In which direction are you facing now?
E. East
F. West
G. North
H. South
Answers
Answer:
i believe that it's north
which formula represents a substance that contains covalent bonds 1) LiCl 2)CaCl2 3)K2O 4)CO2
Answers
Answer:
It is CO2 Number 4
Step-by-step explanation:
Answer:
Step-by-step explanation:
Point R is at (3, 1.3) and Point T is at (3, 2.4) on a coordinate grid. The distance between the two points is ____. (Input numbers and decimal point only, such as 8.2.) (Please walk me through how you got your answer!)
Answers
Answer:
[tex] RT = 1.1 [/tex]
Step-by-step explanation:
Distance between R(3, 1.3) and T(3, 2.4):
[tex] RT = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} [/tex]
[tex] RT = \sqrt{(3 - 3)^2 + (2.4 - 1.3)^2} [/tex]
[tex] RT = \sqrt{(0)^2 + (1.1)^2} [/tex]
[tex] RT = \sqrt{0 + 1.21} = \sqrt{1.21} [/tex]
[tex] RT = 1.1 [/tex]
Solve the system by substitution.
-2y = x
7x+9y = -45
Answers
Answer:
9
Step-by-step explanation:
substitute the value
7= -10s-3 Solve the equation
Answers
Answer:
s = 1
Step-by-step explanation:
7 = -10s - 3
=> 7 + 3 = 10s
=> 10 = 10s
=> 10/10 = s
=> 1 = s
Answer: s= -1
Step-by-step explanation:
The ratio of apples to strawberry's is 2:10 if there is 60 strawberry's how many apples are there
Answers
What is 4,000 times 48?
The answer is 192,000
Answers
Answer:
yes 4000×48=192000
very clever....(dead serious)
Approximately 54% of mathematics students do their homework on time. In a class of 250 students, what is the mean, variance, and standard deviation if we assume normality and use the normal distribution as an approximation of the binomial distribution?
A) Mean = 135 Variance = 62 Standard Deviation = 8B) Mean = 53 Variance = 62 Standard Deviation = 8C) Mean = 54 Variance = 8 Standard Deviation = 62D) Mean = 135 Variance = 8 Standard Deviation = 62
Answers
Answer:
A) Mean = 135 Variance = 62 Standard Deviation = 8
Step-by-step explanation:
Given that :
Proportion (p) = 54%
Sample size (n) = 250
Using Normal approximation :
Mean = np
Mean = 250 * 0.54 = 135
Variance = npq ; q = 1 - p = 1 - 0.54 = 0.46
Variance = (250 * 0.54 * 0.46) = 62.1 = 62
Standard deviation = √variance = √62.1
Standard deviation = 7.8803553 = 8
2y − 7x + 4x2 + 3y + 7x
A 4x2 − 14x + 5y
B 4x2 − 14x
C 4x2 + 14x + 5y
D 4x2 + 5y
Answers
Answer:
5y + 8
Step-by-step explanation:
unless you forgot your parentheses are the (2y-7x+4x)(2+3y+7x) then your answer would be different
(4x3−12x2−5)−(−8x2+4x+3)=
find the difference
Answers
Answer:
4x³ - 4x² - 4x - 8
General Formulas and Concepts:
Pre-Algebra
Distributive PropertyAlgebra I
Combining Like TermsStep-by-step explanation:
Step 1: Define expression
(4x³ - 12x² - 5) - (-8x² + 4x + 3)
Step 2: Simplify
Distribute negative: 4x³ - 12x² - 5 + 8x² - 4x - 3Combine like terms (x²): 4x³ - 4x² - 5 - 4x - 3Combine like terms (Z): 4x³ - 4x² - 4x - 8Use the Distributive Property and mental math to find the product.
5(88) =
Answers
Answer:
440
Step-by-step explanation:
I learned with parenthesis if its like this 4(7)
It usually means to multiply
soo
88 times 5
=440
soo
88
please help me asap
Answers
Answer:
2 5/18
Step-by-step explanation:
It's the last choice
39 decreased by a number p
Answers
Answer:
mm
Step-by-step explanation:
I don't know sooorryy
A rectangle has a length of 3 1/4 feet and a width of 1 1/3 feet. What is the area of the rectangle?
Answers
Answer:
the answer is simple 4 1/3
Step-by-step explanation:
you can support me with brainliest
Answer:
13/3 or 4 1/3
Step-by-step explanation:
area of rectangle = length * width
3 1/4 feet as an improper fraction is 13/4
1 1/3 feet as an improper fraction is 4/3
length * width
13/4 * 4/3
= 13/3 or 4 1/3
Work out the length of ab coordinate
Answers
The distance between points AB at A(2, 5) and B(2, 10) is 5 units
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
The distance between two points A(x₁, y₁) and B(x₂, y₂) on the coordinate plane is:
[tex]AB=\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}[/tex]
Let us assume that AB has coordinate at A(2, 5) and B(2, 10), hence:
[tex]AB=\sqrt{(10-5)^2+(2-2)^2}=5\ units[/tex]
The distance between points AB at A(2, 5) and B(2, 10) is 5 units
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ANHL player's labor negotiating committee is to be selected from 8 player representatives from the Eastern Conference and 7 player representatives from the Western Conference. Find the probability of selecting 3 Eastern Conference representatives and 2 Western Conference representatives.
a. 1/ 3003
b. 1/3
c. 56/143
d. 140/429
Answers
Answer:
21 / 143
Step-by-step explanation:
Given that:
Number of Eastern conference reps = 8
Number of western conference rep = 7
Probability of selecting 3 from Eastern reps and 2 from western reps
Probability = required outcome / Total possible outcomes
Total possible outcomes:
selection to be made = 3+ 2 = 5
Total Number of players = 8 +7 = 15
Total possible outcomes
Using combination formula :
nCr = n! / (n-r)!r!
15C5 = 15! / 10!5! = (15 * 14 * 13 * 12 * 11) / (5*4'3*2*1) = 360360 / 120 = 3003
Total possible outcomes = 3003
Required outcome :
8C3 * 7C2
8C3 = 56 ; 7C2 = 21
8C3 * 7C2 = 56 * 21 = 1176
required outcome / Total possible outcomes
= 1176 / 3003
= 21 / 143
Using the hypergeometric distribution, it is found that the probability is:
c. 56/143
The players are selected from the sample without replacement, hence, the hypergeometric distribution is used.
Hypergeometric distribution:
[tex]P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}[/tex]
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
The parameters are:
x is the number of successes. N is the size of the population. n is the size of the sample. k is the total number of desired outcomes.In this problem:
There are 15 representatives, hence [tex]N = 15[/tex]8 are from the Eastern Conference, hence [tex]k = 8[/tex]Sample of 5, hence [tex]n = 5[/tex].The probability is P(X = 3), hence:
[tex]P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}[/tex]
[tex]P(X = 3) = h(3,15,5,8) = \frac{C_{8,3}C_{7,2}}{C_{15,5}} = 0.3916[/tex]
For which the equivalent fraction is option c.
A similar problem is given at https://brainly.com/question/24826394
Ed is a mid segment for this triangle solve for X
I will give a brainless if a kind human being could answer this problem and explain it this is due in 15 mins and I’m confused :(
I will give a Brainlist also :)
Answers
Answer:
Step-by-step explanation:
What you are being told is that 3x - 7 is twice as big as x. You can see that because ST (for example) is cut into 2 equal parts. So is UT (cut into two equal parts). So the parts of the Big Triangle (SUT) are twice as Big as the parts of the small triangle DET
So multiply x by 2
3x - 7 = 2x Add 7 to both sides
3x - 7 + 7 = 2x + 7
3x = 2x + 7 Subtract 2x from both sides
3x-2x = 7
x = 7
Find the equation for the line graph below
Answers
given two points P = (2,4) and
Q = (9, -1).
The slope of a line passing through the two
points P = (x1, yi) and Q = (x2, y2)
У2 - У
is given by m =
X2 ー X1
We have that x1 = 2, y, = 4, x2 = 9,
У2 = -1.
Plug the given values into the formula for Slope:
m =
(-1) - (4
(9) - (2)
=
-5
7
5
=-+
Now, the y-intercept is b = y, - m • xj (or b = y2 - m • x2, the result is the same).
6=4-(-)・0=
38
7
Finally, the equation of the line can be written
in the form y = mx + b.
y=
5
38
ILL GIVE BRAINEST HELP PLEASEE IM FAILING
THERE ARE 4 QUESTIONSSSS!!!!!!
Answers
1.) Choice B
p= b+h+c
SA= bh + pl
p=15+20+25 = 60
SA= 15(20) + 60(30) = 2100
2.) Choice D
V= lwh
V= (40)(22)(23.5)
V= 20680
1 liter = 1000cm^3
1L = x
1000cm 20680
x= 20.7 liters
3.) Choice B
V= (1/3)a^2(h)
V= (1/3)9^2(6.5)
V= 175.5
4.) I don't know this
help please with number 2 help please thank you
Answers
Answer:
He will save $300
Hope this helps
let m>0. match each inequality with its graph. Explain your reasoning.
Answers
Answer:
a. C
b. A
c. B
d. D
Step-by-step explanation:
[tex]a.\ \ \frac{x}{m} < -1 \Longleftrightarrow x < -m[/tex]
Then
The graph that represents the inequality is C.
[tex]b.\ \ \frac{x}{m} > 1 \Longleftrightarrow x > m[/tex]
Then
The graph that represents the inequality is A.
[tex]c.\ \ \frac{x}{m} < 1 \Longleftrightarrow x < m[/tex]
Then
The graph that represents the inequality is B
[tex]d.\ \ -\frac{x}{m} < 1 \Longleftrightarrow -x < m \Longleftrightarrow x > -m[/tex]
Then
The graph that represents the inequality is D.
Evaluate the expression 6³
Answers
Answer:
6 to the power of 3 means your base number is 6 and the 3 is how many times you multiply 6 by itself (6×6×6). the answer is 216
identify the k-value that makes the relationship shown in the table below proportional.
Answers
Answer:
The value of k that makes the relationship shown in the table below proportional is [tex]\mathbf{\frac{1}{2}}[/tex]
Step-by-step explanation:
The relation is proportional if [tex]y=kx \:or\:k=\frac{y}{x}[/tex]
Putting values of x and y to find k.
For x =2 and y =1 k is: [tex]k=\frac{y}{x}=\frac{1}{2}[/tex]
For x =4 and y =2 k is: [tex]k=\frac{y}{x}=\frac{2}{4} =\frac{1}{2}[/tex]
For x =6 and y = 3 k is: [tex]k=\frac{y}{x}=\frac{3}{6} =\frac{1}{2}[/tex]
For x = 8 and y = 4 k is: [tex]k=\frac{y}{x}=\frac{4}{8} =\frac{1}{2}[/tex]
For x =10 and y = 5 k is: [tex]k=\frac{y}{x}=\frac{5}{10} =\frac{1}{2}[/tex]
So, The value of k that makes the relationship shown in the table below proportional is [tex]\mathbf{\frac{1}{2}}[/tex]