Answer:
y=3x-2..... i
x-y=4...... ii
x-4=y
Substituting the value of y in equation i,
x-4=3x-2
2-4=3x-x
-2=2x
x=-1.
From ii,
-1-4=y
y=-5.
x=-1, y=-5
Step-by-step explanation:
brainest please
question 3 I mark as brainliest
Can anybody help me with this problem?
Answer:
a point a line that's the answer:
Answer:
yes but what is the question
Please help me!!! I will make you brainiest!!!!!!
Answer:
a
Step-by-step explanation:
you take 236 and divide it by 4
236÷4=59 or 59/1
Some college roommates want to make pancakes for their neighbors. They need 7 cups of flour, but only have a 1/6 cup measuring cup. How many times will they have to fill their measuring cup?
Answer:
42
Step-by-step explanation:
They have to fill the measuring cup by 42 times.
What is an expression?Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.
Given that some college roommates want to make pancakes for their neighbors. They need 7 cups of flour but only have a 1/6 cup measuring cup.
The number of times the cup is to be used will be calculated by dividing the numbers below:-
Number = 7 / ( 1 / 6 )
Number = 7 x 6
Number = 42 times
Therefore, they have to fill the measuring cup by 42 times.
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every morning at breakfast, joey eats one serving of cereal with one serving milk. each box of cereal contains 10 servings and each carton of milk contains 8 servings. if joey opens a new box of cereal and a new carton of milk today, how many days will it take him to empty a box of cereal and a carton of milk on the same day?
Answer: it will take 5 days
Step-by-step explanation:
on the 5th day joey will be opening his 5th carton of milk and is 4th box of cereal
Dan constructs a scale model of a building with a rectangular base. His model is
2 inches in length and 1 inch in width. The scale on the model is 1 inch = 35 feet.
What is the actual perimeter, in yards, of the base of the building?
und
Answer:
210 feet
Step-by-step explanation:
2 inches=70
1 inch=35
(70+35)×2=210
Angel’s partner, Lisa, owns the remaining portion of the bakery. Write a simplified ratio to represent Angel’s ownership to Lisa’s ownership in the bakery.
Answer:
5:3
Step-by-step explanation:
The measure of an angle is six more than twice the measure of its
complement. Find the measure of the larger angle.
The larger angle is:
Answer:
58
Step-by-step explanation:
Let the angle = x
Let the complement = 90 - x
2x = (90 - x) + 6
2x = 96 - x
3x = 96
x = 96/3
x = 32
============
The angle = 32
The complement = 90 - 32 = 58
What is the common denominator for the following fractions? 4/6 , 7/12 , 9/24 , 5/4 , 7/8
Answer: The common denominator for:
4/6 =12
7/12= 84
9/24=72
7/8= 56
Hope you have a nice day/night :)
Jenny has three times as much money as Peter. Together they have $44. How much do they each have
Answer:
33 & 11
Step-by-step explanation:
33+11=44
Answer:
jen has 33, Peter has 11
Step-by-step explanation:
j + p = 44 and
j = 3p
substitute j
3p + p= 44
4p + p=44
p = 44/4
p=11
j + 11 = 44
j = 44 - 11
j= 33
The difference of two supplementary angles is 58 degrees. Find the measures of the angles.
Answer:
The measure of the angles are 61° and 119°
Step-by-step explanation:
Let the first angle = x°
let the second angle = y°
The sum of two supplementary angles = 180°
x° + y° = 180° ----- equation (1)
based on the given question; "the difference of two supplementary angles is 58 degrees."
x° - y° = 58° ------- equation (2)
from equation (2), x° = 58° + y°
Substitute the value of x into equation (1)
(58° + y°) + y° = 180°
58 + 2y = 180
2y = 180 -58
2y = 122
y = 122 / 2
y = 61°
The second angle is given by;
x° = 58° + y°
x = 58° + 61°
x = 119°
Thus, the measure of the angles are 61° and 119°
Math help!!! What’s the answer to 1&2?
2P - 3 > P + 6
Thanks!
Answer:
P > 9
Also here is the inequality graphed.
Step-by-step explanation:
Start by subtracting P on both sides.
2P − 3 (−P ) > P + 6 (− P)
P − 3 > 6
Next you will need to add 3 to both sides.
P − 3 (+3) > 6 (+3)
P > 9
figure B is a scale copy of figure A. 3 by 3 3 by 9
I hope this is right.
Answer: 8
There are 8 figure A's in Figure B.
Hope this helps!
If ab = 2, bc = 6 and ca = 3 then find the value of a.
Answer:
a = 1
Step-by-step explanation:
The postal service sorts mail as Priority Mail Express, Priority Mail, First-Class Mail, or Standard Mail. Over a period of 3 weeks, 18 of each type were mailed from the Network Distribution Center in Atlanta, Georgia, to Des Moines, Iowa. The total delivery time in days was recorded. Minitab was used to perform the ANOVA. The results follow:
Source DF SS MS F P
Factor 3 1.83 0.61 2.77 0.048
Error 68 15.28 0.22
Total 71 17.11
Level N Mean StDev
Priority Mail Express 18 2.873 0.477
Priority Mail 18 3.040 0.574
First-Class Mail 18 3.273 0.462
Standard Mail 18 3.228 0.360
Using the ANOVA results, compare the average delivery times of the four different types of mail.
Identify the null hypothesis and the alternate hypothesis.
Null hypothesis:
A) H0: μ1 ≠ μ2 ≠ μ3 ≠ μ4
B) H0: μ1 = μ2 = μ3 = μ4
A) or B)
Alternate hypothesis:
A) H1: At least one mean is different.
B) H1: All means are equal.
A) or B)
What is the decision rule? Use the 0.05 significance level. (Round your answer to 2 decimal places.)
Reject H0 if F>
Use the 0.05 significance level to test if this evidence suggests a difference in the means for the different types of mail.
H0 is (rejected/not rejected)
Answer:
Null hypothesis:
B) H0: μ1 = μ2 = μ3 = μ4
Alternate hypothesis:
A) H1: At least one mean is different.
Reject H0 if F>2.74
H0 is rejected
Step-by-step explanation:
Null hypothesis always contain equality so, null hypothesis would be
B) H0: μ1 = μ2 = μ3 = μ4.
Alternate hypothesis doesn't contain equality so, alternate hypothesis would be
A) H1: At least one mean is different.
Decision rule will be "reject null hypothesis if calculated F is greater than critical value of F".
Critical value of F is F0.05(3,68)=2.74.
So, decision rule will be Reject H0 if F>2.74.
As, calculated F 2.77 is greater than 2.74 so, we reject our null hypothesis and conclude that there is sufficient evidence to suggests a difference in the means for the different types of mail at 5% level of significance.
PLEASE HURRY!!!
a
Undefined
b
Negative
c
Zero
d
Positive
Answer:
undefined
Step-by-step explanation:
Since this is a vertical line, it has an undefined slope.
m = change in y/ change in x
But x does not change
m = change in y /0
We cannot divide by zero so the slope is undefined
Help i need good grade on this or ill never make it
Answer:
magazine ads - 11, 33, 44, 66
newspaper ads - 2, 6, 8, 12
help me with this question pleaseee !!!!!!!!
find the missing number of the unit rate
12/4=?/1
Answer: 3/1
Step-by-step explanation:
Your supposed to divide by 4 on the top and bottom.
12 4= 3
4 4 = 1
please help! I dont want to fail!!!!!!!!
if you could do these three I will mark you as brainlest. thank you ♡
Answer:
a d c
Step-by-step explanation:
:0
What’s the slope of -1,-5 and 4,-1
Answer:
5/4
Step-by-step explanation:
You are going up 5 and over 4.
Answer:
wrong, its would be 4/5.
Step-by-step explanation:
The slope formula is m= y2-y1/ x2- x1
Therefore, m = -1-(-5)/4-(-1)
m= 4/5
Help me with this question if you don’t mind
Answer:
D
Step-by-step explanation:
if AB is congruent to AC that means both are 76 degrees so subtract that from the total degrees of a whole triangle which is 180 that gives you A which is 28.
Hope it helps :)
QUESTION 1
Find the derivative of the function f(x)= /7x-8 using the limiting process.
Answer: Apply the Sum/Difference Rule
d/dx(7x)-d/dx(8)
d/dx(7x)=7
d/dx(8)=0
7-0=7
Step-by-step explanation: The answer is 7
30. While making a dessert, Jane used
9/10 of a scoop of brown sugar as well
as 1/2 of a scoop of white sugar. How
much more brown sugar did Jane use?
Answer:
Jane used 2/5 of a scoop more of brown sugar than she did with white sugar.
Step-by-step explanation:
If you want to find how much more something is from something else, you subtract. So, subtract 9/10-1/2. If you want to subtract, they should both have the same denominator. So, 9/10-1/2 is the same as 9/10-5/10. 9/10-5/10 is equal to 4/10 which is simplified to 2/5.
A bicycle is traveling at 17 miles per hour.
How many feet will it cover in 60 seconds?
Round your answer to the nearest tenth of a foot.
Answer:
The bicycle will cover about 943.36 feet.
Step-by-step explanation:
1 mile = 5280 ft
5280 x 16 = 84480
84480 / 60 = 1408 ft per minute
40 seconds of 1 minute = .66 or .67 of a minute
1408 x .67 = 943.36
simplify √80 - 2√45
The simplification of the given equation is [tex]-2\sqrt{5}[/tex].
What is simplification?Simplification is the process of substituting a complex mathematical expression with a simpler (typically shorter) counterpart.
In algebra, simplification of algebraic expressions. Logic optimization is the simplification of boolean expressions.
Simplification of the above equation are:
[tex]=\sqrt{80} - 2\sqrt{45}\\\\=4^2\sqrt{5}-2(\sqrt{3^2}\times \sqrt{5})\\\\=4\sqrt{5} - 6\sqrt{5}\\\\=-2\sqrt{5}[/tex]
Therefore, the simplified value of the given equation are [tex]-2\sqrt{5}[/tex].
Learn more about the simplification, refer to:
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Find the inverse of f(x)= 2x+3/x-1
Answer:
[tex]\displaystyle f^{-1}(x)=\frac{3+x}{x-2}[/tex]
Step-by-step explanation:
We have the function:
[tex]\displaystyle f(x)=\frac{2x+3}{x-1}[/tex]
Find the inverse of f(x). First, we call y=f(x):
[tex]\displaystyle y=\frac{2x+3}{x-1}[/tex]
We have to solve for x. Multiply by x-1:
[tex]y(x-1)=2x+3[/tex]
Operate:
[tex]yx-y=2x+3[/tex]
Join all the x's to the left side and move the rest to the right side:
[tex]yx-2x=3+y[/tex]
Factor:
[tex]x(y-2)=3+y[/tex]
Solve for x:
[tex]\displaystyle x=\frac{3+y}{y-2}[/tex]
Interchange the variables:
[tex]\displaystyle y=\frac{3+x}{x-2}[/tex]
This is the inverse function:
[tex]\boxed{\displaystyle f^{-1}(x)=\frac{3+x}{x-2}}[/tex]
Consider the following game, played with three standard six-sided dice. If the player ends with all three dice showing the same number, she wins. The player starts by rolling all three dice. After this first roll, the player can select any one, two, or all of the three dice and re-roll them. After this second roll, the player can again select any of the three dice and re-roll them one final time. For the following questions, assume that the player used the following optimal strategy: if all three dice match, the player stops and winds; if two dice match, the player re-rolls the die that does not match; and if no dice match, the player re-rolls them all.
Requied:
a. Find the probability that all three dice show the same number on the first roll.
b. Find the probability that exactly two of the three dice show the same number after the first roll.
c. Find the probability that the player wins, conditioned on exactly two of the three dice showing the same number after the first roll.
Answer:
a
[tex]P(A) = \frac{1}{36}[/tex]
b
[tex]P(B) = \frac{15}{36}[/tex]
c
[tex]P(U) = \frac{11}{36}[/tex]
Step-by-step explanation:
From the question we are told that
The number of dice is [tex]n = 3[/tex]
Generally for all three dice to show the same number the second and the third dice must have the same outcome as the outcome of the first dice.
This means that the number of outcome the first die can have is 6 (6 sides), the number of outcome which the second and the third dice can have is 1 (they must match the first )
So the probability that all three dice show the same number on the first roll is mathematically represented as
[tex]P(A) = \frac{6}{6} * \frac{1}{6} * \frac{1}{6}[/tex]
=> [tex]P(A) = \frac{1}{36}[/tex]
Generally for two of the three dice show the same number after the first roll then the number of outcome for one of the dice would be is 6 , the number of outcome for another one must be 1(i.e it must match the first ) , the number of outcome for the remaining one must be 5 (i.e it can show any of the remaining 5 sides which the first and second dice are not showing )
Now the number of ways of selecting this 2 dice that show the same number from the 3 dice is mathematically represented as
[tex]N = ^3C_2[/tex]
Here C stands for combination
So
[tex]N = ^3C_2 = 6[/tex]
So the probability that exactly two of the three dice show the same number after the first roll is mathematically represented as
[tex]P(B) = N \frac{1}{6} * \frac{5}{6}[/tex]
=> [tex]P(B) = \frac{15}{36}[/tex]
Generally from the question we are told that if two dice match, the player re-rolls the die that does not match.
Now the probability that the die that did not match the first time will match the second time is
[tex]P(E ) = \frac{1}{6}[/tex]
Generally if that one die does not show the same number in the second round , the probability that it will match in the third round is
[tex]P(R) = \frac{5}{6} * \frac{1}{6} [/tex]
Generally the probability that he wins (i.e when all three are showing the same number ) and exactly two is showing the same number is mathematically represented as
[tex]P(K) = P(E)* P(B) + P(R)* P(B)[/tex]
=> [tex]P(K) = \frac{1}{6} * \frac{15}{36} + \frac{5}{6} * \frac{1}{6} * \frac{15}{36}[/tex]
=> [tex]P(K)= \frac{165}{1296}[/tex]
So the probability that the player wins, conditioned on exactly two of the three dice showing the same number after the first roll is mathematically represented as
[tex]P(U) = \frac{\frac{165}{1296}}{\frac{15}{36} }[/tex]
=> [tex]P(U) = \frac{11}{36}[/tex]
If a bird is flying 75 ft above the ocean's surface, and a shark is swimming at a depth of 30 ft, what is the distance between the bird and the shark?
Answer:
105 ft
Step-by-step explanation:
since the shark is swimming at a depth of 30 ft mean is -30 ft...
so the distance between the bird and the shark is
7 5 ft - (- 30 ft) = 105 ft
I hope it help