Answer:
-35x³ - 39x² + 25x
Step-by-step explanation:
Step 1: Write out expression
(5x - 3x²) - (5x - 2)(10x + 7x²)
Step 2: Distribute/Expand
5x - 3x² - (50x² + 35x³ - 20x - 14x²)
Step 3: Combine like terms
5x - 3x² - (36x² + 35x³ - 20x)
Step 4: Distribute negative
5x - 3x² - 36x² - 35x³ + 20x
Step 5: Combine like terms
-35x³ - 39x² + 25x
Answer:
WAIT standard .?
Step-by-step explanation:
A rectangular rug has
perimeter 240 inches. The length is 12 inches more than twice the width. Find the length and width
of the rug.
Answer:
length= 84
width= 36
The following value is closest to what number? 292
HELP PLS WILL GIVE BRAINLISTE
Answer: D and J
Step-by-step explanation:
Subtract 17.56 from both sides and divide by 5 to get the answer of D. 2.52
3x + 6 = 9
subtract 6 from both sides
3x = 3
x = 1
Find the least common multiple of 45 and 120
Answer:
[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{360}}}}}[/tex]
Step-by-step explanation:
Steps for finding L.C.M of the given numbers :
[tex] \star[/tex] First of all find the prime factors of each numbers.
[tex] \star[/tex] Take out the common prime factors.
[tex] \star[/tex] Also take out the remaining prime factors.
[tex] \star[/tex] Multiply those all prime factors and obtain L.C.M. If there is not any common prime factors then their L.C.M is the product of the given numbers.
Now,let's find the least common multiple ( L.C.M ) of 45 and 120 following those steps :
prime factors of 45 = 3 × 3 × 5
prime factors of 120 = 2 × 2 × 2 × 3 × 5
Common prime factors= 3 and 5
Remaining prime factors = 2 , 2 , 2 and 3
Multiply all the prime factors to obtain L.C.M
[tex] \dashrightarrow{ \sf{3 \times 5 \times 3 \times 2 \times 2 \times 2}}[/tex]
[tex] \dashrightarrow{ \boxed{ \sf{360}}}[/tex]
Hope I helped!
Best regards! :D
what is Z 2(2z -4)=4
Answer:
z=3
Step-by-step explanation:
2(2z -4)=4
Divide by 2
2/2(2z -4)=4/2
2z-4 = 2
Add 4 to each side
2z-4+4 = 2+4
2z = 6
Divide by 2
2z/2 = 6/2
z=3
Given the following formula, solve for t.
V = u + at.
A. t= a(v – u)
B. t = v-u/a
C. t=v+u/a
D. t =a(v + u)
Anyone? Know how to do this
Answer:1=£34.2
2=£66.6
3=£9.18
4=£13,158
Step-by-step explanation:
We are decreasing the prices by 10%
1.£38
£38 = 100%
? =90%
90×38÷100=£34.2
2.£74
£74=100%
? = 90%
90×74÷100=£66.6
We are increasing the the salaries by 2%
1.£9
£9=100%
? =102
102×9÷100=£9.18
2.£12900
£12900=100%
? =102%
102×12900÷100=£13,158
2120
Question #7MultipleChoice
Show Answer
Subtract the following fractions. (Reduce answers to lowest terms.)
3/10 - 1/4=
3/14
3/6
1/2
1/20
Answer:
1/20
Step-by-step explanation:
3/10 - 1/4
First, convert the fractions to a common denominator:
3/10 *2/2 = 6/20
1/4 * 5/5 = 5/20
Now put them back into the equation and solve:
6/20 - 5/20 = 1/20
Another way to do this:
3/10 - 1/4
Convert the fractions into decimals:
3/10 = 0.3
1/4 = 0.25
substitute back into the equation and solve:
0.3 - 0.25 = 0.05
convert back into fractions:
0.05 = 1/20
Edwardo has $24 saved. If he saves $8 each week, how much money will he have in 5 weeks ?
Answer:
64$
Step-by-step explanation:
Ifshe saved 8$ each week then that would equal to 40
But by adding the 24$ already saved the total amount would equal to 64$
I don’t understand this
Answer: a=x represents sinks
b=the amount of money he will spend overall on the sink and sealent
c= 100x represents 100 sinks
d=joe will have to charge 85 dollars per sink
Step-by-step explanation:
.what is formula to calculate sqare
Answer:
Area = a2
a = length of side
what is the value of x ?
Step-by-step explanation:
2(2x - 6) + 2(x + 3) = 26
4x - 12 + 2x + 6 = 26
4x + 2x -12 + 6 = 26
6x - 6 = 26
6x = 26 + 6
6x = 32
x =32/6
x = 5.3333
Answer:
Step-by-step explanation:
2(2x -6) + 2(x + 3) = 26
4x - 12 + 2x + 6 = 26
6x - 6 = 26
6x = 32
x = 32/6= 16/3
The number of hot dogs Ryan can eat varies directly with the amount of time he spends eating. If Ryan can eat 14 hot dogs in 6 minutes, how many hot dogs can he eat in 15 minutes?
Answer:
35
Step-by-step explanation:
If I am not correct I'm sorry.
If Ryan can eat 14 hot dogs in 6 min then he should be able to eat about 35 hot dogs in 15 mins.
14/6= 2.333...
so 2.333... x 15 would equal 35
I hope this helps.
Answer:
Ryan can eat about 34.5 hot dogs in 15 minutes
Step-by-step explanation:
You first need to find how many hot dogs ryan eats in one minute. By doing this you need to do 14 divided by 6 and that will get you to 2.3
Than you need to take that 2.3 and muliply it by the 15 minutes and than that would get you to your answer of 34.5 hotdogs in 15 minutes
I hope this helped!
2. Multiply (-4)(-2)(-5). (5 points)
O
-40
O
-8
8
Answer: -60
Step-by-step explanation: -4x-3x-5=-60...
A phone company charges a base fee of $12 per month plus an additional charge per minute. The monthly phone cost can be represented by this equation: = 12 + • , where is the additional charge per minute, and is the number of minutes used. Which equation can be used to find the number of minutes a customer used if we know and ? a. = C-12/a b. =(−12)− c. =−12 d. = −12
Answer:
-12
Step-by-step explanation:
i had got it right yay
Answer:
:)
Step-by-step explanation:
m=c-12/a
I had this on a test and I got it right
A scale factor of 3 was applied to this figure. What would be the new length of the height and width of the triangle?
Answer:
height: 9 units
width: 9 units
Step-by-step explanation:
I need help with this
In the expression 3v – 8, what is the variable?
Answer:
V is the variable
Step-by-step explanation:
Answer:a. v
Step-by-step explanation:
Given
Required
Identify the variable
Literary, variable means things that change in values;
Going by this definition, we have that:
3 -> This is not a variable because its value will always be 3
v -> This is a variable because its value can change once its value changes, the result of the expression will also change
- -> This is not a variable; it is an arithmetic operator to subtract
8 -> This is not a variable because its value will always be 8
Take for instance
When
Notice that there's a difference in both results;
This is as a result of v being a variable
Step-by-step explanation:
can someone please help me .
Simplify 3/100 +33/100, correct to 1 decimal place.
Answer:
Step-by-step explanation:
3/100+33/100=36/100=0.36≈0.4(round to one decimal place)
i need help showing my answer -7/12 + 1/2
Answer -1/12
Step-by-step explanation:
-7/12 + 1/2 cannot be added until you change 1/2 into 6/12.
To change 1/2 to 6/12, you have to multiply 1/2 by 6 because you want the same denominator. Since you can't just make a whole new fraction by changing the denominator, you have to multiply the numerator by 6 as well.
After changing the fraction, you should get -7/12 + 6/12.
now you can just add the numerators and denominators together and get -1/12!
Is there a difference between 6.780 and 6.78? Why or why not?
Answer:
Step-by-step explanation:
No there is no difference because in a decimal the zero's don't matter, they can go on infinitely but if the numbers above zero are the same and in the same order then the zero's don't make any difference.
Which of the following expressions is correct?
|-37| = 37
-|37| = 37
|-37| = -37
-|-37| = 37
Answer:
The first one is correct
Step-by-step explanation:
Absolute value (Anything that is inside the tabs) will always be positive, even if there is a negative sign in the number. If the number is already positive, it's still positive.
Answer:
the first one
Step-by-step explanation:
the negative sign is in the box
What is 39,404,000 expressed in scientific notation?
Answer:
3.9404×10^7
Im not sure how to explain it.
A donut shop made 12 dozen donuts to give to a school’s math club.
Which expression represents how many donuts each student would get if the donuts were equally distributed and there were x
x
students in math club’s
Answer:
Number of donuts each student get = 144 / x
Step-by-step explanation:
Given:
Number of donuts = 12 dozen
Number of students = x
Find:
How many donuts each student get
Computation:
Total number of donuts = 12 × 12 = 144
Number of donuts each student get = Total number of donuts / Number of students
Number of donuts each student get = 144 / x
HELP HELP Point F is the midpoint of segment DE. DF = 2x+6 and DE = 2x+36. Find DE.
Answer:
since F is midpoint
DF= FE = 2x+6
DF +FE=DE
2x+6 + 2x+6 = 2x+36
4x + 12 = 2x+36
2x = 24
x=12
DE =2x+36 =2*12 + 36 = 60
Step-by-step explanation:
A rectangular vegetable patch has a perimeter of 36 meters and an area of 80 square meters. What are the dimensions of the vegetable patch?
Answer: 5 and 4
Step-by-step explanation:
Perimeter = 2 ( L + W)
18 = 2(L + W) divide through by 2
9 = L + W
9 - L = W
Area = L * W
20 = L (9 - L)
20 = 9L - L^2
L^2 - 9L + 20 = 0 factor
(L - 5) (L - 4) = 0
Set both factors to 0 and solve for L
L = 5 and L = 4
is 4.5 times 10 to the negative 12th power in scientific notation
Answer:0.0000000000045
Step-by-step explanation:
move decimal to left 12 times , left since its negative
Write an explicit formula for the sequence.
-20.-12.-4.4
An) = -20n - 8
O A(n) = -20 - 8n
A(n) = -20 + (n - 1)8
An) = n - 8
Answer:
I need help
Step-by-step explanation:
Can someone help me with number 7 and 8. Thank you
Answer:
Q7) ( 2,-2)
Q8) (- 0.5 , -2)
Step-by-step explanation:
As we have to find the mid-points of the line segments, the line segments will be divided in same ratio i.e. 1:1 (∵ A Mid-point divides a line segment into equal parts )
According to Section formula ,
[tex]( x' , y') = (\frac{mx^2 + nx^1}{m+n} , \frac{my^2+ny^1}{m+n} )[/tex]
where (m,n) are the ratios in which a line segment is divided & ( x¹ , y¹ ) ( x², y²) are the co-ordinates of a line segment.
In Q7 ,
x¹ = 3 , y¹ = -9 , x² = 1 , y² = 5 & m = n = 1
So putting the section formula here gives :-
[tex]( x' , y') = (\frac{1*1 + 1*3}{1+1} , \frac{1*5+1*(-9)}{1+1} ) = ( 2 , -2)[/tex]
In Q8 ,
x¹ = 5 , y¹ = -1 , x² = -6 , y² = -3
So putting the section formula here gives :-
[tex](x' , y') = (\frac{1*(-6) + 1*5}{1+1} , \frac{1*(-3) + 1*(-1)}{1+1}) = ( -0.5 , -2)[/tex]