Answer:
Mr. Russo takes three minutes less than Mr. Lloyd to pack a case when each works alone.
One day, after Mr. Russo had spent six minutes in packing the case, the boss called him away, and Mr. Lloyd finished packing the case in four more minutes.
How many minutes would it take Mr. Russo alone to pack the case?
:
Let t = time required by Russo alone
then
(t+3) = time required by Lloyd alone
:
Let completed job = 1; (a packed case)
:
Russo + Lloyd = completed job
6%2Ft + 4%2F%28%28t%2B3%29%29 = 1
:
Multiply by t(t+3)
t(t+3)*6%2Ft + t(t+3)*4%2F%28%28t%2B3%29%29 = 1t(t+3)
:
Cancel the denominators, and you have:
6(t+3) + 4t = t^2 + 3t
6t + 18 + 4t = t^2 + 3t
10t + 18 = t^2 + 3t
:
Arrange as a quadratic equation on the right:
0 = t^2 + 3t - 10t - 18
t^2 - 7t - 18 = 0
Factors to
(t-9)(t+2) = 0
:
The positive solution is what we want here:
t = 9 minutes, time required by Russo alone
:
:
Check solution in original shared work equation (Lloyd requires 12 min)
A. 12/29
B. 3/5
C. 2/3
D. 20/29
Answer:
Where is the question? The Answer is 20/29
Step-by-step explanation:
Brainiest
please help me answer these 2 questions, worth lots of points
Jake throws a dart that hits the square shown below:
A square is drawn. A circle of radius 8 units touches the sides of the square.
What is the probability that the dart hits a point in the circle?
(1) 16%
(2) 21.5%
(3) 64%
(4) 78.5%
Nicholas is adding by place value from right to left. When he adds the hundredths, he gets 0.46. Describe what his next step should be. NO LINKS!!!!
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Answer:
record 6 hundredths; add 4 to the numbers of tenths
Step-by-step explanation:
Nicholas needs to write down the 6 and "carry" the 4, adding it to the numbers of tenths.
Depending on the method you've been taught, the 4 may be written above the column with place value of tenths, or it may be written on a separate sum line.
Pleaseeee quick Amanda graphed line mand line non a
coordinate plane, as shown below. Which of
the following statements is true?
A. The slope of line mis greater than the
slope of line n.
B. The slope of line n is greater than the
slope of line m.
C. The x-intercept of line mis greater than
the x-intercept of line n.
D. The x-intercept of line n is greater than
the x-intercept of line m.
Answer:
either B or D you might have made a mistake sending the choices
Step-by-step explanation:
D)The x-intercept of line n is 0 while the x-intercept of line m is -7
B)The higher the slope of a line, the sharper the slope
Answer:
it's B the slope of line n is greater than the slope of line m.
What type of data distribution is shown on the
graph? V symmetric
Coin Toss
0.6
0.4
Probability P(X)
0.2
0
0
1
2
Number of Heads: X
COMPLETE
The mean is
Answer: B, C, C
Step-by-step explanation:
The type of data distribution which is shown on the graph of coin toss where, x is the number of heads is symmetric and discrete.
What is data distribution?The data distribution is a way to represent the values of a set of data or information. The distribution of data is generally represented in a particular order.
In the given graph, the data distribution is shown for the coin toss. The probability P(X) is shown on the y-axis of the graph, and the number of heads is shown on the x-axis.
There are two types of data distribution shown on the graph.
Symmetric - The data distribution shown on the graph is symmetric over x = 1.
Discrete - The data distribution shown on the graph is discrete because the values of X are distinct.
Hence, the type of data distribution which is shown on the graph of coin toss where, x is the number of heads is symmetric and discrete.
Learn more about the data distribution here;
brainly.com/question/25983327
#SPJ7
The complete question is attached
I need help with this plzzzzzzz
Answer: -4
Step-by-step explanation: If you add all the numbers marked, -7 + -4 + -3 + 2 + 7 you will get -4.
What is the value of x?
Enter your answer in the box.
x =
Answer:
39°
Step-by-step explanation:
39+102= 141
180-141= 39
I don’t get how they added to get the amount of money earned, I need help if you can explain how I can find the amount of money earned for 40 hours.
Answer:
its 34
Step-by-step explanation:
you just add
Answer:
330
Step-by-step explanation:
123.75 : 15= 8,25--> the money you earn in one hour.
8,25 x 10= 82,50--> the money you earn in 10 hours.
247,50 (30h) + 82,50 (10h)= 330 (40h)
:)
In AJKL, 1 = 620 inches, k = 910 inches and ZK=53°. Find all possible values of ZL,
to the nearest degree.
Answer:
33 degrees is your answer
If the line through (-2,4)and ) 5,D)is parallel to the graph of y= 3X +4 find the value of d
Answer:
D = 25
Step-by-step explanation:
For 2 lines to be parallel, they must have the same sloe;
Given the coordinates (-2,4)and (5,D)
Slope = D-4/5-(-2)
Slope = D-4/5+2
Slope = D-4/7
Given the equation y = 3x + 4, comparing to y = mx+b
mx = 3x
m = 3
Hence the slope is 3
Equating the slopes
D-4/7 = 3
D-4 = 3*7
D-4 = 21
D = 21+4
D = 25
Hence the value of D is 25
Edgar has a bag of 10 marbles (3 green, 5 blue, and 2 red). If he picks one marble out of the bag at random, what’s the probability that he will get a blue marble? Explain how you determined that probability.
There are 5 blue marbles and 10 total marbles.
The probability of picking blue is the number of blue marbles/ total marbles.
Probability = 5/10 which reduces to 1/2
The answer is 1/2
Alex had 23 coins in his collection. He found 5 coins and gave Bill 8 coins. How many coins does Alex have now?
Answer:
alex has 20 coins since 23 + 5 - 8 = 20
step-by-step explanation:
state is a given functions are inverses. NO LINKS!! Part 2
Step-by-step explanation:
5.
g(x)=-2x+1
let y=2x+1
Interchanging role of x & y
x=2y+1
y=½x-½
g-¹(x)=½(x-1)
not
equal to f(x)=-x+1
Given function are not function of each other .
6.
g(x)=-x
let
y=-x
Interchanging role of x & y
x=-y
y=-x
g-¹(x)=-x
not
equal to f(x)=3+⅓x
Given function are not function of each other .
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Answer:
none of the function pairs are inverses
Step-by-step explanation:
Inverse linear functions will meet all of several requirements:
each is a reflection of the other about the line y=xthe solution of the simultaneous equations in on the line y=xin standard form, the coefficients are swapped (only)the product of the slopes is 1_____
For these problems, it is probably easiest to look at the last requirement. Each function is given in slope-intercept form, so the slope is simply the x-coefficient.
5) The product of slopes is (-2)(-1) = 2 ≠ 1 . . . NOT inverses
6) The product of slopes is (-1)(1/3) = -1/3 ≠ 1 . . . NOT inverses
7) The product of slopes is (-4/3)(-1/2) = 2/3 ≠ 1 . . . NOT inverses
8) The product of slopes is (3/2)(-5/2) = -15/4 ≠ 1 . . . NOT inverses
Help!!!
A) Mode
B) Mean
C) Median
Answer:
Median
Step-by-step explanation:
Median will be misleading are not asking for the midd;e price they are asking for the average price in this case you will use mean to find
Anyone can solve this for me thx
Answer:
16
Step-by-step explanation:
Write the expression as a product of two factors.
2* 1 + (1+7) + (762)
Answer:
put answer in link
alekscgi/x/Isl.exe
Step-by-step explanation:
Answer:
771
Step-by-step explanation
I need to find the value of x help needed
Answer:
x=33°
Step-by-step explanation:
Hi there!
We're given a triangle, with 2 known measures of angles in the triangle
54° and 93°
the other (unknown) value is x
the angles in a triangle add up to 180°
therefore, to find the value of x, we can add up the values of the 3 angles and set that to equal 180
54°+93°+x°=180°
add 54 and 93
147°+x°=180°
subtract 147 from both sides
x=33°
so the value of x is 33 degrees
Hope this helps!
Help PLZZ NO FILES PLZZZ
Answer:
B
Step-by-step explanation:
C is 31, so we add a negative to make it the opposite.
Which of the following equations is a solution for 5745?
A. 45 = 5
B. x2 = 45
C.x = 45
D.NXS = 45
Answer:
c
Step-by-step explanation:
Write an equation in slope-intercept form for the following line:
(-14,1) and (13,-2)
Answer:
y=1/9x-5/9
Step-by-step explanation:
just use slope intercept to find the slope then point slope form to find the line
which of the following is equal to (12x6)x5?
Answer:
360
Step-by-step explanation:
first do 12x6 and then do the answer of thst times 5
Plz help me well mark brainliest if correct!!....
Answer:
A. First grade boys
Answer:
First grade boys
Step-by-step explanation:
The taller the bar the more value it has and green is for boys and blue is girls.
the first green bar is the lowest so they sold the least amount
What is the value of y in the equation 4+ y = -3? (1 point)
07
0 1
O-1
0 -7
A teacher is four times as old as a student. In 28 years, the student's age will be half of the teacher's age. How old are they now?
The age of the teacher is
years.
The age of the student is
years
What’s equivalent to 3/2
Answer:
Some fractions equivalent to 3/2 are...
6/4 9/6 12/8 15/10 18/12 21/14 24/16
27/18 30/20 33/22 36/24
Answer:
6/4 or 9/6
Step-by-step explanation:
PLEASE I NEED HELP URGENT I Will MARKE YOU BRAIN LIST
Answer:
1. 0
2. a/ a + b
3. a + b/ a - b
Graph the image of N(3, -1) after a rotation 180° clockwise around the oriGin
Answer:
(-3, 1)
Step-by-step explanation:
180° rotation clockwise: (x,y) becomes (-x,-y)
Factor the expression. 81v2 – 100
Answer (9v-10)(9v+10)
Which expression is equivalent to 6 (3x + 4)?
18.1 + 24
183 +4
92 +10
91 +4
Pls hurry