Answer: -4/63
Step-by-step explanation: he put a positive sign instead of a negative in the 4
a. The correct product is -4/63.
b. Ming forgot to distribute two negative signs on the first term.
Sign changes when we do arithmetic operations ?(-,-) = +. (+,+) = +. (-,+) = -. (+,-) = -.
For example -: 6 + (-3) here negative sign of 3 will distribute (+,-) and the end result will be negative ⇒ 6 - 3 = 3
According to the given question
Ming has given a product -(-4/9) · (-1/7) and he mistakenly said it is 4/63.
The given product is -(-4/9) · (-1/7)
= (4/9).(-1/7)
= -4/63.
Ming didn't notice that on the first term two negative sign will distribute and make it positive and then multiplying it with a negative number will result in a negative number.
Learn more about sign conventions here :
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1.5x - 2.5. x=3. (show work)
Step-by-step explanation:
Simplifying
1.5x + -2.5x = 3
Combine like terms: 1.5x + -2.5x = -1x
-1x = 3
Solving
-1x = 3
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Divide each side by '-1'.
x = -3
Simplifying
x = -3
Answer:
1.5(3)-2.5
4.5 - 2.5
2
Step-by-step explanation:
the answer is 2 ;)
2/3x - 12, x=18 (show work)
Answer:
0
Step-by-step explanation:
Since we know x=18, we need to find 2/3 of 18.
Let's make 2/3 so that the denominator(bottom part of a fraction) is 18.
18 divided by three is six so we needs to times the top number, 2, by 6.
The fraction would now be 12/18. Now we needs to subtracts 12 which would become 0/18. This equals 0.
stephany can type 2/3 of a page in 1/6 hour .at this rate how many pages will stephany type per hour?
Help Please I will give brainliest
order them from greatest to least
Answer:
3rd one, 4th one, 1st one, 2nd one
Step-by-step explanation:
1st one - 2.6
2nd one - (-3.125 )
3rd one - 10.35
4th one - -2.95
Answer:
-4.5 x -2.3 < -3 3/10 - (- 7/30) < 5/-1.6< 5 6/15 + (-2 4/5)
Hope this helped good luck
The previous balance in your check register $234.67 . You make a deposit of 150.00 .You write a check for $63.23 . What is your new balance ???
Answer:
321.44
Step-by-step explanation:
Mary borrowed $6000 from a bank for 3 years and was charged simple interest. The total interest that she paid on the loan was $720. As a percentage, what was the annual interest rate of her loan?
If necessary, refer to the list of financial formulas.
what is the percent %
BRAINLIST WILL BE GIVEN . to answer just just say for example graph one goes with equation 3 and table 4 . this was just a example not the answers . only answer if you know the answer .
9514 1404 393
Answer:
(graph, table, equation) = (1, 5, 2), (2, 3, 1), (3, 2, 4), (4, 4, 5), (5, 1, 3)
Step-by-step explanation:
The graphs have the following (slope, intercept), so can be easily matched with the corresponding equation.
(1/2, 1), (2, -1), (1, 2), (1/2, -1), (-2, -1)
We can look at the points in the tables to see which graph they appear on.
Table 1, (-2, 3) is on graph 5
Table 2, (-3, -1) is on graph 3
Table 3, (-1, -3) is on graph 2
Table 4, (-2, -2) is on graph 4
Table 5, (4, 3) is on graph 1
__
Then our triples of graph, table, equation are ...
(1, 5, 2), (2, 3, 1), (3, 2, 4), (4, 4, 5), (5, 1, 3)
Answer:
hi! this is for free points and so you can give the other person brainliest! Hope your day goes well :)
Step-by-step explanation:
The ratio of BMX bikes in a sporting goods store to mountain bikes is 3 to 2. The store
has 90 BMX bikes. How many mountain bikes does the store have?
BMX: 3 to 2
BMX:90 to 60
90x2=180 180÷3=60
Answer: 60
The store has 60 mountain bikes if there is ratio of BMX bikes in a sporting goods store to mountain bikes is 3 to 2.
What is Ratio?An ordered pair of numbers a and b, written a / b where b does not equal 0 is called ratio.
The ratio of BMX bikes to mountain bikes in the store is 3 to 2.
Which means that for every 3 BMX bikes, the store has 2 mountain bikes.
It is given that the store has 90 BMX bikes.
Let us set up a proportion to find the number of mountain bikes:
3 BMX bikes / 2 mountain bikes = 90 BMX bikes / x mountain bikes
where x is the number of mountain bikes.
Now solve for x
3 BMX bikes × x mountain bikes = 2 mountain bikes × 90 BMX bikes
3x = 180
Divide both sides by 3
x = 60
Therefore, the store has 60 mountain bikes.
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PLEASE HELP IM SUPER ANXIOUS RIGHT NOW!!!!!
Graph the function
f(x)= {x+1 if x 1
on the coordinate plane
need help ASAP!! (If you have the right answer and sends in less than and hour I will give brainliest) (15 points)
Answer:
The first and last statement is wrong, but the three in between is correct. I hope that helps :-)
Step-by-step explanation:
Please help i have no idea how to do this.
Cell phone Plan A costs $70 per month and comes with a free $500 phone. Cell phone Plan B costs $50 per month but does not come with a phone. If you buy the $500 phone and choose Plan B, how many months is it until your cost is the same as Plan A's?
____________months
Answer:
25 months
Step-by-step explanation:
Answer:
11
Step-by-step explanation:
Make up a story! It might help to split up the graph/story into intervals like I just stated...
0-9 minutes
9-15 minutes
15-21 minutes
Is she correct? Why or why not? Justify your reasoning.
Answer:
No she is wrong.
Step-by-step explanation:
4^4=4*4*4*4=256
Answer:
wrong
Step-by-step explanation:
the correct answer is 2^4=16
reduce 36/-24 to the standard form
Monica bought 2 drinks and 3 bags of popcorn for $22. Her dad bought 4 drinks for $20. How much is each drink and bag of popcorn? One equation looks like:
2x + 3y = 22
Find the other equation and solve the system.
Answer:
7
Step-by-step explanation:
Answer:
each drink costs $5 each bag of popcorn cost $4
Step-by-step explanation:
In an equation of the form k = ax^2 + bx + c with a > 0, the least possible value of k occurs at x = -b/(2a). In the equation k = (6x + 12)(x - 8), what is the least possible value for k?
Answer:
[tex]k= 6x^{2} -36x-96[/tex]
Is what I got in a calculator but however, if you'd try and solve for K you won't get a complete answer.
Hope this helped :)
Simplify the expression 2x+(x)(3+x). Write products as powers when possible.
Answer:
Step-by-step explanation:
2x+(x)(3+x) multiple or foil the ()
2x+3x+x^2 combine like terms
5x+x^2 or x^2+5x
Use the identity (x+y)(x2−xy+y2)=x3+y3 to find the sum of two numbers if the product of the numbers is 28, the sum of the squares is 65, and the sum of the cubes of the numbers is 407.
Answer:
Step-by-step explanation:
1) f(x) = x+y , xy = 49 --> f(x) = x+49/x
f '(x) = 1-49/x2 , x = ±√49 , choose x = +7
y = 49/x = 7
smaller = 7
larger = 7
2) Vertical Distance is difference between the two functions
V(x) = x+56 - x2, V '(x) = 1 -2x --> x = 1/2 --> V(1/2) = 56.25 <---Max Vertical distance
Boundary at -7 and 8 are less
3) I googled the equation, it is really y(n) = kn/(49+n2)
y '(n) = (k(49+n2) - 2kn2)/(49+n2) , Setting to zero, k(49+n2) -2kn2 = 0 , n = 7
4) Let x and y be the sides of the rectangle. A = xy = 37.5 Million or y = 37.5/x
The length of the fences is f(x) = 2x + 3y = 2x+112.5/x
f '(x) = 2-112.5/x2 --> x = √56.5 = 7.5 and y = 37.5/7.5 = 5 then scale by √Million
smaller = 5000 ft and larger = 7500 ft
this took me ages to work out so hopefully it helped
Answer:
x + y = 11
Step-by-step explanation:
xy = 28
x² + y² = 65
x³ + y³ = 407
(x + y)(x² - xy + y²) = x³ + y³
(x + y)(x² + y² - xy) = x³ + y³
(x + y)(65 - 28) = 407
37(x + y) = 407
x + y = 407÷37
x + y = 11
Greta uses 2 ounces of pasta to make 2/9 of a serving of pasta. How many ounces of pasta are there per serving?
Answer:9 ounces
Step-by-step explanation:
So first you want to start off with what you know
2/9 of a swerving is 2 ounces of pasta
Which aslo lets you know 1/9 of a serving = 1 ounce of pasta
Since 1/9 of a serving is 1 ounce you want to times that by 9 to get a whole serving
1 * 9 = 9
So you know that 1 serving is 9 ounces of pasta
Shawna says, “I can begin by dividing each side of the equation by –2.5 to get 5 minus n minus StartFraction 2 over 2.5 EndFraction = Negative StartFraction 15 over 2.5 EndFraction.”
Dexter says, “I can begin by distributing Negative 2.5 to get Negative 12.5 + 2.5 n + 2 = 15.”
Tilana says, “I can begin by multiplying each side of the equation by Negative StartFraction 1 over 2.5 EndFraction to get 5 minus n minus 0.8 = negative 6.”
Which students are correct?
only Shawna and Tilana
only Shawna and Dexter
only Dexter and Tilana
Shawna, Dexter, and Tilana
Answer:
all are correct
Shawna, Dexter, and Tilana
are all right
Step-by-step explanation:
can i have brainiest [tex]pretty[/tex] [tex]please[/tex]
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
Some facts about powers of ten are shown.
Use what you know about powers of ten to enter numbers that make the equations true.
PLZ HELP
Answer:
1) 10,000
2) 4
3) 1,000
4) 0.0013
5) Make what equation true? Once you tell me I can edit the answer and write the answer that is supposed to be here!
Hope this helps!
Answer ASAP for 20 points
Simplify the expression with NO exponents
q^18 x q^-20
Answer:
7x+8
Step-by-step explanation:
Answer:
q18xq−20
=
q18x
q20
=
x
q2
Step-by-step explanation:
Hope I helped
Brainliest plz
Please help me on this question hery hard 5x5=
Answer:
25
Step-by-step explanation:
Answer: 25
Step-by-step explanation:
5+5+5+5+5=25
If $(2x+5)(x-3)=14$, find the sum of the possible values of $x$.
Answer:
x = 1/4 ± 1/4√233
Step-by-step explanation:
(2x + 5)(x - 3) = 14
~Use FOIL on the left side
2x² - 6x + 5x - 15 = 14
~Combine like terms
2x² - x - 15 = 14
~Subtract 14 to both sides
2x² - x - 29 = 0
~Use the quadratic formula and simplify
x = 1/4 ± 1/4√233
Best of Luck!
Tyler’s Puzzle
Choose a number, but do not share the number with anyone else. You will perform a sequence of operations on your number and then write your final answer.
Triple the number.
Subtract 7.
Double the result.
Subtract 22.
Divide by 6.
Write your explanation, figure out how Tyler's Puzzle works. ( use variables, expressions, and/or equations in your explanation.
Answer:
12.3
Step-by-step explanation:
16x3=48x2=96-22=74 divided by 6=12.3
You flip a coin three times. What is the probability that you get heads all three times? Answer as a simplified fraction use the forward slash "/".
2. You town got 3.44 inches of rain in June, 5.07 inches in July, and 4.28 inches in August. What was the average rainfall over these three month? Round to the nearest tenths of an inch.
Answer:
50% chance each time
each tim
Answer:
1. 1/6
2. 4.26 inches
Step-by-step explanation:
1. Because theres a chance youll land on heads 1/2 each time. Since its out of 3 you multiply 1/2*3 and get 1/6
2. Add all of the numbers, then divide by 3
Math Topic: Scale Drawings. What is the scale factor from polygon ABCD to polygon PQRS? Write your answer in fraction form. ( Look at image to get answer) Please answer! I just started this unit and I don't know the answer.
Answer:
1.5 is the asnwer because when you multiply first image by 1.5 you get the second.
HELPPPP PLZZZZ!!!!!!!!!!!
Answer:
1 hour=$9.30
5 hours=46.50
8 hours=$74.40
11 hours=$102.30
6 1/2 hours=$60.45
B)$20
Step-by-step explanation:
Multiply each hour by $9.30.
Divide $186 by $9.30
Can someone please answer this
10 points
Answer:
C, 5
Hope this helps!
Step-by-step explanation:
Answer:
C.) 5
Step-by-step explanation:
Hope I helped