What is the simplified form of this expression?
7a2 + 10a − 3a − 2a2
Answers
Answer:
What is the simplified form of this expression?
7a2 + 10a − 3a − 2a2
Step-by-step explanation:
7a2 + 10a − 3a − 2a2
Combine like terms
742 + 10a - 3a - 2a2
742 + 7a - 2a2
solution=
5a2 + 7a
explanation
just add like terms
Related Questions
Plz, help I beg you to answer this correctly there are 3 answers worth 10 points if you answer it correct I will give brainlyest.
Answers
Answer:
2. 5(b+3)
3. 5b + 15
4. 15 + 5b
Step-by-step explanation:
area of rectangle = length * breadth
length= b+3
breadth = 5
Select the correct scientific notation form of this numeral.
2,000,004
2.400 000 × 10 6
2.4 × 10 6
2 × 10 6
2.000 004 × 10 6
Answers
The lengths of a rectangular garden, the inner rectangle, is 9ft more than its width. For the garden. Let x = width, x + 9 = length. It is surrounded by a brick walkway 4ft wide. Suppose the total area of the walkway is 400ft^2.
a. Write a polynomial to represent the length of PQ
b. What are the dimensions of the garden?
Answers
Answer:
\(PQ = x + 13\)
The dimension of the garden is 52.5ft by 43.5ft
Step-by-step explanation:
Given
The shape above
Required
Determine PQ
Determine dimension of the garden
Calculating Length PQ
Represent the length of the inner rectangle as L
Represent the width of the inner rectangle as W
\(W = x\)
\(L = x + 9\)
The distance between the inner rectangle and the outer triangle is 4ft
This implies that;
\(PQ = L + 4\)
Substitute \(x + 9\) for \(L\)
\(PQ = x + 9 + 4\)
\(PQ = x + 13\)
Also;
\(QR = W + 4\)
Substitute \(x\) for \(W\)
\(QR = x + 4\)
Calculating The Dimension of The Garden
First, we need to determine the Area of the inner rectangle
\(Area_1 = L * W\)
Recall that \(W = x\) and \(L = x + 9\)
So;
\(Area_1 = x * (x + 9)\)
For the bigger rectangle
\(Area_2 = PQ * QR\)
Recall that \(PQ = x + 13\) and \(QR = x + 4\)
So;
\(Area_2 = (x + 13)(x + 4)\)
Given that the Area of the walkway is \(400ft^2\)
This implies that
\(Area_2 = Area_1 + 400\)
Substitute \(Area_1 = x * (x + 9)\) and \(Area_2 = (x + 13)(x + 4)\)
\((x + 13)(x + 4) = x * (x + 9) + 400\)
Open All Brackets
\(x^2 + 13x + 4x + 52 = x^2 + 9x + 400\)
\(x^2 + 17x + 52 = x^2 + 9x + 400\)
Collect Like Terms
\(x^2 - x^2 + 17x - 9x = 400- 52\)
\(8x = 348\)
Divide both sides by 8
\(\frac{8x}{8} = \frac{348}{8}\)
\(x = \frac{348}{8}\)
\(x =43.5\)
Since the dimensions of the garden is \(W = x\) and \(L = x + 9\)
Substitute 43.5 for x in both cases
\(L = 43.5 + 9 = 52.5\)
\(W = 43.5\)
Hence, the dimension of the garden is 52.5ft by 43.5ft
What is twelve and thirty four hundredths written in standard form? (2 points)
Group of answer choices
1.234
12.34
123.4
1234
Answers
Answer:
12.34
Step-by-step explanation:
I've done this test before! Good luck, hope you get 100%
please write a function for the points (1/3,0) (-2 3/4,0) and (0,-5) and explain the steps.
thank you!
Answers
The function for the points are y = -15x - 5
How to determine the functionFrom the information given, we have that;
The points are;
(1/3,0) (-2 3/4,0) and (0,-5)
Using the point-slope form of a linear equation, we have;
y - y₁ = m(x - x₁)
Such that;
m is the slope of the liney - y₁ and (x - x₁) are the pointsUsing (1/3, 0) and (0, -5), we have that the slope is;
m = (0 - (-5))/0 -1/3)
expand the bracket
= 5 / (-1/3)
= -15
Now, take any of the given points and substitute the values
Using (1/3, 0), we get;
y - 0 = -15(x - 1/3).
y = -15x - 5.
Learn more about functions at: https://brainly.com/question/25638609
#SPJ1
The function for the points solved by (1/3,0) (-2 3/4,0) and (0,-5) solved by point slope form is \(a=-15b-5\)
We have given the points:
(1/3,0) (-2 3/4,0) and (0,-5)
Using the formula of linear equation
\(a-\)\(a_{1}\)\(=x[b-b_{1}]\)
Where we will consider (1/3,0) = \(a-a_{1}\) and (0,-5) = \(b-b_{1}\)
that is 1/3 = \(a\), 0 = \(a_{1}\) and
0 = \(b\), -5 = \(b_{1}\)
\(x\) refers to the slope of line (take any variable)
Now for finding the value of \(x\),
\(x=a-a_{1}/b-b_{1}\)
inserting the values,
\(x=[0-[-5]]/[0-1/3]\\x= -15\)
Substitute the value of \(x\) in the equation
\(a-0=-15[b-1/3]\)
By simplifying the equation, we get
\(a=-15b-5\)
To know more about functions and points:
https://brainly.com/question/30721594
ANSWER FAST I DON'T UNDERSTAND?
Answers
Answer:
Step-by-step explanation:
I would ask my teacher for help if no, then it seems like you would mark a line in the numbers line or smth just giving you an idea sorry if this never helped :(
Please help and you get a cake
Answers
Answer:
Mean = 33.7
Median = 34.5
Mode = 34
Range = 33
After adding 26....
mean decreases by 0.7
median decreases by 0.5
mode is 34
range is 33
Step-by-step explanation:
mean = sum of all the data values/number of data values
= (18 + 19 + 20 + 34 + 34 + 35 + 37 + 42 + 47 + 51)/10
= 337/10
= 33.7
To find median arrange the values in increasing order, find the mid value
If the number of data points is even, find the average of the mid 2 data values
Arranging data values we get:
18, 19, 20, 34, 34, 35, 37, 42, 47, 51
Since there are 10 data values, take the average of the middle two:
(34 + 35)/2 = 34.5
The mode is the value that occurs most often. We see that there are two instances of 34 whereas the other values appear only once
Mode = 34
The range is highest - lowest = 51 - 18 = 33
After we add 26, we get the following data set arranged
18, 19, 20, 26, 34, 34, 35, 37, 42, 47, 51
we can calculate the stats using the same technique as above
We get the following values
mean = )(18 + 19 + 20 + 26 + 34 + 34 + 35 + 37 + 42 + 47 + 51)/11
= 33
median = 34
mode = 34
range = 51-18 = 33
To find the decrease in mean and median subtract from the first set of values
Please help its urgent and timed.
In the diagram, GHK- (Triangle here) MNP.
what is the length, in units, of side mn?
A. 1.4
B. 1.6
c. 2.4
d.2.6
Answers
Answer:
it is 2.4
Step-by-step explanation:
Can some please help me?
Answers
Answer:
ofc 8374747374743i3i3i383
5. 16t^4/8t^4
9. 6^3+6+4/6^2+3+3
THE ADDITION PART IS STILL EXPONENTS
I hope that was easy to understand, here’s a guide if you need it in the future
I need an answer for this pls
Answers
Answer:
The GREATER the line the STEEPER the PROPORTIONALITY of X you know you have a constant proportionality when your graph begins at the ORIGIN we can write the equation as y = K x. We find the constant of proportionality by DIVIDING the CONSTANT coordinate by the Y coordinate from an ordered pair.
Step-by-step explanation:
I think I'm not sure you should probably get a second opinion to be sure.
Answer:
The GREATER the line the STEEPER the PROPORTIONALITY of X you know you have a constant proportionality when your graph begins at the ORIGIN we can write the equation as y = K x. We find the constant of proportionality by DIVIDING the CONSTANT coordinate by the Y coordinate from an ordered pair.
(wat she said :))
The length-to-width ratio of a television screen is 4 to 3. Mya bought a television with a length of 48 inches. What is the width of the television? 12 inches 24 inches 36 inches 42 inches
Answers
Answer : the answer is 36 inches because the length it 48 inches and it ratio is 4 and width ratio is 3 so it has to be 36 inches
English is the predominant language spoken in Chile. Question 1 options: True False
whoever answers first gets the crown
Answers
Answer: The answer is false!
Step-by-step explanation: You may think its true but NO, its not true!
Answer: false
Step-by-step explanation:
the correct answer is a dialect of spanish, chilean spanish.
Solve for m. 10+8m= – 10m–8
m=
Answers
Answer:
Step-by-step explanation: don't know
Explanation:
Step 1: bring -8 to the left since it is less than 10. It would now be 18+8m= -10.
Step 2: you would then move 8 to the right side since you want them to be equal on both sides. it would now be 18= -18m
Step 3: Finally, you divide -18 since you want to find m;you would need to separate them
Answer is m= -1
A Karen's car is shown below.Which is closest to the distance traveled, in feet, after 3 full rotations of the tire? use pi = 22/7.
Answers
Answer: This is approximately 3.14
Mackey invested some money in an account paying 6% interest for one year. She invested $1000 more than this amount in an account paying 8.5%. How much did she invest in total if the total interest earned in the year was $737.50?
Answers
Step-by-step explanation:
Let's assume the amount Mackey initially invested in the 6% account is x dollars.
According to the given information, Mackey invested $1000 more than x in the 8.5% account, which means she invested (x + $1000) dollars in that account.
The total interest earned from the 6% account would be 0.06x dollars, and the total interest earned from the 8.5% account would be 0.085(x + $1000) dollars.
The total interest earned in the year is given as $737.50, so we can set up the equation:
0.06x + 0.085(x + $1000) = $737.50
Simplifying the equation:
0.06x + 0.085x + 0.085($1000) = $737.50
Combining like terms:
0.145x + $85 = $737.50
Subtracting $85 from both sides:
0.145x = $737.50 - $85
0.145x = $652.50
Dividing both sides by 0.145:
x = $652.50 / 0.145
x ≈ $4500
Therefore, Mackey initially invested approximately $4500 in the 6% account, and she invested $1000 more, which means she invested a total of $5500.
$4500
$4500
$4500
$4500
Mya’s bedroom is 15 feet long, 12 feet wide. It has no windows. Mya wants to paint all four walls. What surface area will she paint?
A) 180 square feet
B) 720 square feet
C) 162 square feet
Answers
2/3 - 3/8 Pls help!!!
Answers
Step-by-step explanation:
To subtract 3/8 from 2/3, we need to find a common denominator.
The least common multiple of 3 and 8 is 24.
So, we can convert 2/3 and 3/8 to have a denominator of 24:
2/3 = 16/24
3/8 = 9/24
Now we can subtract:
16/24 - 9/24 = 7/24
Therefore, 2/3 - 3/8 = 7/24.
pleasse no wrong answers
Answers
Large Polygon 14 x21= 294
Little Polygon 2x(2x2) =8
294-8=286
what is the answer to 1/5(2-25)=2/5(2+20)
Answers
2
−
2
5
2−25 to
−
2
3
−23.
1
5
×
−
2
3
=
2
5
(
2
+
2
0
)
5
1
×−23=
5
2
(2+20)
2 Simplify
2
+
2
0
2+20 to
2
2
22.
1
5
×
−
2
3
=
2
5
×
2
2
5
1
×−23=
5
2
×22
3 Move the negative sign to the left.
−
2
3
5
=
2
5
×
2
2
−
5
23
=
5
2
×22
4 Use this rule:
a
b
×
c
=
a
c
b
b
a
×c=
b
ac
.
−
2
3
5
=
2
×
2
2
5
−
5
23
=
5
2×22
5 Simplify
2
×
2
2
2×22 to
4
4
44.
−
2
3
5
=
4
4
5
−
5
23
=
5
44
6 Since
−
2
3
5
=
4
4
5
−
5
23
=
5
44
is false, there is no solution.
No Solution
Please help SUBTRACT mixed fractions 100 points
Answers
C
Hope this helps
PLEASE ANSWER AS FAST AS YOU CAN BUT PLEASE GET THE RIGHT ANSWER!!!
Answers
Answer: (-3,-8)
Step-by-step explanation: opposite of (3,-8)
100 POINTS MATHAMATICS PLEASE ANSWER ASAP
look in image and answer ALL 4 PROBLEMS
Answers
2. Pencils measuring less than 5 inches: 3 + 2 + 3 = 8 inches in total.
3. False. To determine if more than half of the pencils are 6 inches or shorter, we need to find the total number of pencils and calculate how many of them are 6 inches or shorter.
Total number of pencils = 4 + 3 + 2 + 3 + 7 + 8 = 27
Number of pencils that are 6 inches or shorter = 4 + 3 + 2 + 3 = 12
To find out if more than half of the pencils are 6 inches or shorter, we need to divide the number of pencils that are 6 inches or shorter by the total number of pencils and multiply by 100%:
12/27 x 100% = 44.44%
Since 44.44% is less than 50%, the statement is false.
4. There are three pencils that measure more than 5.5 inches but less than 7.5 inches: 6, 6, and 7. Therefore, the answer is 3 pencils.
(Make sure you look over this and if you have any questions about this comment before you submit make sure this seems right to you and if you understand this or not)
2. Would be the number 8
3. Would be false
4. Would be the number 3
Which inequalities would have an open circle when graphed? Check all that apply.
t Less-than-or-equal-to 25
-2.5 Less-than-or-equal-to m
x > 5.4
One-half less-than x
x > 0
Answers
An open circle is used to graph strict inequalities, which means the inequality does not include the value at the boundary. The inequalities that would have an open circle when graphed are:
x > 5.4
One-half less-than x
x > 0
if an inequality states less than OR equal to that means the circle will be closed when graphed
Using a directrix of y = −2 and a focus of (2, 6), what quadratic function is created?
here are the answers given
\/
f(x) = −one eighth (x − 2)2 − 2
f(x) = one sixteenth (x − 2)2 + 2
f(x) = one eighth (x − 2)2 − 2
f(x) = −one sixteenth (x + 2)2 − 2
Answers
Answer:
f(x)=1/16(x-2)^2+2
Step-by-step explanation:
The Equation can be written like this:
f(x) = 1/(4p)(x -h)^2 +(k-p)
where (h, k) is the focus, and p is half the distance between focus and directrix. Here, (h, k) = (2, 6) and p=(6-(-2))/2 = 4. So the equation is ...
f(x) = 1/16(x -2)^2 +2
PLEASE HURRYYYYYYYYYYYYYYYYYYYYYY!!!!!!!!!!!!!!!!!!!!!
Answers
Answer:
A) 63\(\frac{351}{441}\)
Step-by-step explanation:
the answer is A) 63\(\frac{351}{441}\)
Answer:
63 Remainder 351
Step-by-step explanation:
For small division problems, the quotient and remainder can easily be thought of. But for larger division problems, long division is one technique that will work for any division problem, no matter how small or large it is.
Let's take a look at how long division works with the simple division problem of 7 / 3 first.
Setting up the problem, it looks like this with the 7 inside the division bracket and the 3 outside.
I need help ASP!!! LAST QUESTION!!!
Answers
Explanation: 4/8 + 3/8 = 7/16
A submarine began at sea level and descended toward the ocean floor at a rate of −0.015 km per minute. Its final depth was −0.3675 km. Estimate how long it took the submarine to reach its final depth by rounding the dividend and divisor to the nearest hundredth.
Estimate of the dividend:
0.37
0.38
–0.37
–0.38
Estimate of the divisor:
–0.02
–0.2
0.02
0.2
Estimate of the quotient:
1.85
5.67
18.5
23.2
*pick one for each*
Answers
Divisor: -0.02
Quotient: 18.5
The dividend is -0.3675. Since the thousandth place is already above 5, you round it up to -0.37.
The divisor is -0.015. Since the thousandth place is 5, you round it up to -0.02.
For the quotient you divide -0.37 by -0.02 and get 18.5. (You can use a calculator or long division.)
Can someone help me.
Answers
Answer:
A. x = -6
B. x = 15
Step-by-step explanation:
A.
\(\frac{x}{3}-5=-7\\\frac{x}{3}-\frac{15}{3}=-7\\\frac{x-15}{3}=-7\\x-15 = -7*3\\x-15=-21\\x=-21+15\\x=-6\)
B.
\(\frac{x}{2}-5=2.5\\\frac{x}{2}-\frac{10}{2} = 2.5\\\frac{x-10}{2}=2.5\\x-10= 2.5*2\\x-10=5\\x=5+10\\x=15\\\)
I hope this helps brother! :D
x/3-5=-7
+5. +5
x/3=-2
*3. *3
x=-6
b.
x/2-5=2.5
+5. +5
x/2=7.5
*2. *2
x=15
What Congressional Reconstruction successful?
Why/why not
Answers
Nate was completing in a book reading contest. He read 9 books a day and 63 a week for 9 weeks. How many books did Nate read in total?
Answers
Answer:
567
Step-by-step explanation:
9books a day so 63 divided by 9 is 7 so he read all week so we just simply multiply 63x9