Answer:
Some one buys an apple that costs two dollars out of there pocket fours times.
Step-by-step explanation:
In a two-digit number, the tens' digit is 1 less than the units' digit. If the digits are
interchanged, the sum of the number obtained and the original number is 143. Find
the number.
Answer:
67
Step-by-step explanation:
Number: AB
A = B-1
BA + AB = 143
10*B + A + 10*A + B = 143
11A + 11B = 143
A + B = 13
(B-1) + B = 13
2B = 14
B = 7
A = 6
The number is 67
check: 6 = 7-1 and 67 + 76 = 143
In a high school orchestra, the ratio of cellos to violins is 1 to 3. There are 21 violins. Write and solve a proportion that gives the number c of cellos in the orchestra.
Answer:Number of cellos =7
Step-by-step explanation:
The ratio of cellos to violins is 1 to 3=1:3
Total ratio = 1+3=4
To find the total number of cellos and violins in the orchestrs,
Ratio of violins/ Total ratio x Total number of cellos and violins = Number of violins
3/4 x X= 21
X=21 x 4 / 3
X =7x 4 28.
Number of cellos =Ratio of cellos / Total ratio x Total number of cellos and violins
=1/4 x28
=7 cellos
hi i would rly appreciate ur help on this. I need to write these expressions as products:
1. ((a+1)^3)+(x^3)
2. ((y-2)^3)-27
3.((a-b)^3)+b^3
4. (8x^3)+((x-y)^3)
5. (27a^3)-((a-b)^3)
Thank you so much i rly appreciate it
Answer:
1.) ((a+1)^3)+(x^3) = a^3 + 3a^2 + 3a + x^3 + 1
2.) ((y-2)^3)-27 = (y^2-y + 7) x ( y - 5 )
3.) ((a-b)^3)+b^3 = a (a^2 - 3ab + 3b^2 )
4.) (8x^3)+((x-y)^3) = 9x^3 -3x^2 y + 3xy^2 - y^3
5.) (27a^3)-((a-b)^3) = 26a^3 + 3a^2 b - 3ab^2 + b^3
5) factor = (a+b)(a+b)^ 2 if a is squared and if b is cubed and moved over to = 0 then we can find (a+b)(a+b)^2 but in all cases of quadratics you can set (x -1 ) = 1 and (x-1 ) = 1 so they are always positive. Which is the same if they start of negative.
For question 5 we have a factor solved (a+b)(a+b)^ 2
Which means the same as this expansion
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Answer:
1st one
Step-by-step explanation:
spinner colours: green, blue, red
card colours: purple, green
possible outcomes:
green + purple
green + green
blue + purple
blue + green
red + purple
red + green
Answer:
A.
Step-by-step explanation:
Match the table units.
If you look at each inside cell, it matches what your result is.
Hope this helps. Have a nice day.
(Make sure that each cell matches with each color.)
i have a question what is ten times ten divided by 2
Answer:
50!
Step-by-step explanation:
round off to the nearest hour 10 :54
Answer:
11
Step-by-step explanation:
the closest whole number on the hour is 11
A person needs to fill 18 water jugs with a hose. Filling the first 3 jugs has taken 5 minutes. How long to finish filling the remaining jugs?
Answer:
10.8 minutes
Step-by-step explanation:
Given data
We are told that the number of Jugs is 18
Filling the first 3 jugs has taken 5 minutes
let us find the filling rate
Rate= 3/5
Rate= 0.6 Jugs per minute
Hence the rate of filling is 0.6 Jugs per minute
Therefore the time take to fill the remaining 16 jugs is
TIme= Rate*Number of Jugs
TIme= 0.6*18
Time= 10.8 minutes
80,76,88,96,75,83,68,94,99,89 find the average distance away from the mean of the grades
Answer:
the average distance from the mean is 84.8
Step-by-step explanation:
The computation of the average distance from the mean is shown below;
= Total sum ÷ number of observations
= (80 + 76 + 88 + 96+ 75 + 83 + 68 + 94 + 99 + 89) ÷ (10)
= 848 ÷ 10
= 84.8
Hence, the average distance from the mean is 84.8
Give two solutions of the inequality: p ≤ 3
Answer:
3,2
Step-by-step explanation:
3 is equal to 3 which can be it and 2 is less than 3
Andrew is working for his mother's company this summer. He gets paid $0.31 for every 4 words he types. If he wants to earn $175 this summer, how many words will he need to type? Round to the nearest whole number.
Answer:
2,258
Step-by-step explanation:
4 words = $0.31
[tex]\frac{4}{0.31}[/tex] = [tex]\frac{x}{175}[/tex]
cross multiple and solve for x
0.31x = (175)(4)
x = about 2,258
8 × (3v − 4) for v = 6
Answer:
112
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightStep-by-step explanation:
Step 1: Define
8 × (3v - 4)
v = 6
Step 2: Evaluate
Substitute in v: 8 × (3 · 6 - 4)(Parenthesis) Multiply: 8 × (18 - 4)(Parenthesis) Subtract: 8 × 14Multiply: 112Answer:
y = 112
Step-by-step explanation:
This is solved by first writing out the equation correctly
[tex]8 * (3*6-4)[/tex]
we solve whats inside the parenthesis first
this equals 14
now 14 times 8 is 112
9x_4(2x_3)=5(x+2) simplify
Answer:
x=1/2
Step-by-step explanation:
use a calculator
The mean temperature for the first 7 days in January was 8 °C.
The temperature on the 8th day was 6 °C.
What is the mean temperature for the first 8 days in January
Step-by-step explanation:
[tex] \frac{(7 \times 8) + 6}{8} = 7.75[/tex]
How can you estimate statistics from data displayed in a histogram?
by going back in time taking the years ago and the year we are now .
Rebecca has been planting young trees in her garden. The maple tree that is 10 centimeters tall
is growing 2 centimeters per month, whereas the oak tree that is 15 centimeters tall is
growing 1 centimeter per month. In a few months, the two trees will be the same height. How
many months will this take and what will that height be?
Answer:
It will take 5 months and that height will be 20cm.
Step-by-step explanation:
Let the height of the tree be h cm and the number of months be m.
Maple tree
Initial height= 10cm
Total height= 10cm +2(number of months)
h= 2m +10 -----(1)
Oak tree
Initial height= 15cm
Total height= 15cm +1(number of months)
h= m +15 -----(2)
When the height of the two trees are the same,
2m +10= m +15
Solve for m:
2m -m= 15 -10
m= 5
Substitute m=5 into either equation 1 or 2 to obtain the height.
When m=5,
h= 5 +15
h= 20
How many roots does y=3x^2+8 have?
Answer:
This quadratic has two unequal, imaginary roots.
Step-by-step explanation:
y = 3x^2 + 8 is a quadratic function, and (like all quadratics) it has two roots. In this case they happen to be different (unequal), as well as imaginary.
Setting y = 3x^2 + 8 = 0, we get:
3x^2 = -8, or
x^2 = -8/3
Taking the square root of both sides, we get
x = ±i√(8/3) (2 imaginary roots)
Simplify:3/4-1/3+1/12
Answer:
the answer is 1/2 and you can write it as 0r 0.2 or 2-1
Step-by-step explanation:
A point is chosen at random on AK what is the probability that one point will be on BG?
Answer:
11/21.
BG has a total of 11 points (when you include 0), and there are 21 points total. 11/21 cannot be simplified, your final answer is 11/21.
The required probability is 11/21 that one point will be on BG.
What is probability?Probability is defined as the possibility of an event being equal to the ratio of the number of favorable outcomes and the total number of outcomes.
We have been given that the number line which has a point is chosen at random on AK.
As per the given question, the required solution would be as:
Since BG has a total of 11 points (when you include 0),
so, the number of favorable outcomes : 11
There are 21 points in total, then the total number of outcomes : 21.
So, the probability that one point will be on BG would be as:
⇒ 11/21
Learn more about probability here:
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what is the answer to this? 2+8×(4+2)÷3−6
Answer:
2+8×6÷3-6 = 2+48÷3-6 = 2+16-6 = 12
What is m Using the hexagon
What is the slope of the line that passes through (1, 3) and (2, 1)?
Answer:
1/-2
Step-by-step explanation:
Answer:
I think its -2
Step-by-step explanation:
y2-y1/x2-x1
BC =
Round your answer to the nearest hundredth.
B
50°
7
Answer:
BC = 5.87
Step-by-step explanation:
Reference angle = 50°
Side Opposite to reference angle = 7
Adjacent side = BC = ?
Apply trigonometric function, TOA, thus:
Tan 50 = Opp/Adj
Tan 50 = 7/BC
BC × Tan 50 = 7
BC = 7/Tan 50
BC = 5.87369742 ≈ 5.87 (nearest hundredth)
Answer:
5.87
Step-by-step explanation:
khan said it was correct.
simplify 3a x 2b x 2
Answer:
[tex]12ab[/tex]
Step-by-step explanation:
3a × 2b = 6ab
6ab × 2 = 12ab
Therefor, the answer is 12ab.
3a × 2b × 2 = 12ab
The expression expects us to find the product . Therefore,
3a × 2b × 2Let's do it step by step
3a × 2b = 6ab
Then,
6ab × 2 = 12ab
Therefore,
3a × 2b × 2 = 12ab
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which is the correct expression of (2x+3) (2x^2-5)
:
:
:
Find the lettered angles in each of the following (see image ).
Sorry for the wobbly drawing.
please show workings.
Answer:
x = 252°, y = 126° , z = 54°
Step-by-step explanation:
( Hopefully I've read the size of the angle 126° correctly )
The central angle x is twice the inscribed angle, that is
x = 2 × 126° = 252°
∠ y = 126° ( angles on the circumference subtended by the same arc )
y and z are adjacent angles and are supplementary , that is
y + z = 180°
126° + z = 180° ( subtract 126° from both sides )
z = 54°
SOME ONE HELP!!! You are still at (1,5). The zombie is 8.7 units below you. Enter the correct coordinates of the zombie below.
Answer:
(1,-3.7)
Step-by-step explanation:
subtract the y axis to go down
5 - 8.7 = -3.7
The solution is B ( 1 , -3.7 )
The coordinates of the zombie is given by B ( 1 , -3.7 )
How does the transformation of a function happen?
The transformation of a function may involve any change.
Usually, these can be shifted horizontally (by transforming inputs) or vertically (by transforming output), stretched (multiplying outputs or inputs), etc.
If the original function is y = f(x), assuming the horizontal axis is the input axis and the vertical is for outputs, then:
Horizontal shift (also called phase shift):
Left shift by c units: y=f(x+c) (same output, but c units earlier)
Right shift by c units: y=f(x-c)(same output, but c units late)
Vertical shift:
Up by d units: y = f(x) + d
Down by d units: y = f(x) - d
Stretching:
Vertical stretch by a factor k: y = k × f(x)
Horizontal stretch by a factor k: y = f(x/k)
Given data ,
Let the initial point of the man be A
The value of A = A ( 1 , 5 )
Let the coordinates of the zombie be B
The value of B = B ( x , y )
The zombie is 8.7 units below
So , it is a vertical shift by 8.7 units
Therefore , the y coordinate will decrease by 8.7 units
Substituting the values in the equation , we get
B = A ( 1 , 5 - 8.7 )
B = B ( 1 , -3.7 )
Therefore , the value of B is B ( 1 , -3.7 )
Hence , the coordinates of B is B ( 1 , -3.7 )
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Help plz helpppppppppppppp plzzzzzzzzz
3(2x - 5)(x + 4) = 0 The zero product property tells us that:
Answer:
x=5/2, -4.
Step-by-step explanation:
3(2x-5)(x+4)=0
(2x-5)(x+4)=0/3
(2x-5)(x+4)=0
2x-5=0, x+4=0
2x=0+5,
2x=5,
x=5/2,
x+4=0
x=0-4=-4
HELP ASAP BRAINLIEST
Answer:
Yes and B
Step-by-step explanation:
If x metres of string are cut from a piece y metres long how much is left?
please help!!!!I need answer
Answer: The new length is: (y - x) metres.
Step-by-step explanation:
If we have a piece of string that is y metres long, and we cut x metres of strings from it, then the new length of the string will be equal to the difference between the initial length and the amount that we cut off.
So the initial length is y metres.
We cut x metres.
The new length is: (y - x) metres.