Answer:
58.56
Step-by-step explanation:
did the quiz/ exam
George solved the equation -103 = -2(-7x + 7) + 8x as follows:
-103 = -2(-7x + 7) + 8x
Step 1: -103 = 14x + 7 + 8x
Step 2: -103 = 22x + 7
Step 3: -110 = 22x
Step 4: -5 = x
At which step did he make an error?
Explain the error:
What is the solution to the equation -6x -11=19
Answer: answer for this question is -5 x is -5 plsss mark me brainlys
Step-by-step explanation:
add 11 to both sides
Hillary opened a savings account with $1,500. How much simple interest will she earn if she leaves the money in the account for two years at an interest rate of 0.025? Use the formula i = prt.
A-$750.00
B-$37.50
C-$375.00
D-$75.00
Answer:
it should be d
Step-by-step explanation:
not for sure just a guess
Answer:
Step-by-step explanation:
D
I looked it up
Simplify (7.78 x 10^−11) (5.9 x 10^−18). Write the final answer in scientific notation.
4.5902 x 10^−28
4.5902 x 10^−29
45.902 x 10^−28
45.902 x 10^−29
I NEED THE ANSWER ASAP!!!!!!!!!!
Answer: 45.902 x 10^-29
Step-by-step explanation:
A line passes through the point (–2, 7) and has a slope of –5. What is the value of a if the point (a, 2) is also on the line?
A. -7
B. -1
C. 1
D. 7
Answer:
-7
Step-by-step explanation:
Maybe
How can you use the double number line diagram to find what percent 240 is of 300?
Answer:
It is 80
Step-by-step explanation:
Percentage Calculator: 240 is what percent of 300? = 80.
Answer: 80
Step-by-step explanation:
Use the equation below to find v, if u=17, a=4, and t=8. 4=u+at
Answer:
This is not a valid equation, as the left-hand side is not equal to the right-hand side.
Therefore, there may be an error in the given equation or values. Please check and provide the correct equation or values, so that we can help you find the value of v.
Step-by-step explanation:
The given equation is:
4 = u + at
where u = 17, a = 4, and t = 8.
Substituting the given values, we get:
4 = 17 + 4(8)
Simplifying the right-hand side:
4 = 17 + 32
Combining like terms:
4 = 49
This is not a valid equation, as the left-hand side is not equal to the right-hand side.
Therefore, there may be an error in the given equation or values. Please check and provide the correct equation or values, so that we can help you find the value of v.
Plz, help me with these two!!!!!
Which group of numbers is listed from least to greatest?
|-4|, 5, |-6|, 7, |-8|
|-8|, |-6|, -1, 5, 8
-6, |-7|, |-8|, 0, 2
9, 7, 5, |-4|, |-3|
The tape diagram below represents 100\%100%100, percent.
What percent is represented by the shaded area?
Answer:
Step-by-step explanation:
Well the answer is 40 cause you count by 20 so if you in 20 t o times then you would get 40 percent
Please help me on this T-T
Answer:
1,840
Step-by-step explanation:
break up the rectangles into peices, then find the area of all of the rectangles, then add them together.
10a=100,000
a=?
whats the answer?
Answer:
a=10000
Step-by-step explanation:
Hope it helps..
ALSO PLEASSSSEEE HELP ASAP (2O points)
A 100-foot sandwich is cut into 2 pieces (a and b). Piece a is 2ft less than 5 times the length of piece b.
(a) What is the system that models this situation ?
(b) Solve the system of equations. How long is piece a and b? Complete sentences.
Find the number with the following arithmetic square root. 0.
Answer:
0 (\(\sqrt{0}\) = 0)
Step-by-step explanation:
If 0^2 = 0 because 0 x 0 = 0, then the reverse function (square root) would result in 0.
I need help really bad please help!
.
I'm Just Guessing At The Possible Answers. Please post a picture of the drop-down answers...
1. Between 3 and 8
2. Well Distrubuted???
3. One Outlier (19.86)
Find all possible values of a such that ax² + (2a + 2)x + a + 3 = 0 has two roots and the distance between them on the number line is greater than 1.
Answer:
\(-2\sqrt{2}-2 < a < 2\sqrt{2}-2,\;\;a\neq0\)
Step-by-step explanation:
Given quadratic equation:
\(ax^2 + (2a + 2)x + a + 3 = 0\)
To find the possible values of "a" such that the given equation has two roots and the distance between them on the number line is greater than 1, use the quadratic formula.
\(\boxed{\begin{minipage}{4 cm}\underline{Quadratic Formula}\\\\$x=\dfrac{-b \pm \sqrt{b^2-4ac}}{2a}$\\\\when $ax^2+bx+c=0$ \\\end{minipage}}\)
Comparing the coefficients:
\(a = a\)\(b = (2a + 2)\)\(c = (a + 3)\)Substitute the coefficients into the quadratic formula:
\(x=\dfrac{-(2a+2) \pm \sqrt{(2a+2)^2-4a(a + 3)}}{2a}\)
Simplify the discriminant (the part under the square root sign):
\(x=\dfrac{-(2a+2) \pm \sqrt{-4a+4}}{2a}\)
Factor out 4 from the discriminant:
\(x=\dfrac{-(2a+2) \pm \sqrt{4(-a+1)}}{2a}\)
\(\textsf{Apply the radical rule:} \quad \sqrt{ab}=\sqrt{a}\sqrt{b}\)
\(x=\dfrac{-(2a+2) \pm \sqrt{4}\sqrt{-a+1}}{2a}\)
Therefore:
\(x=\dfrac{-(2a+2) \pm 2\sqrt{-a+1}}{2a}\)
Factor out the common term 2:
\(x=\dfrac{-(a+1)\pm \sqrt{-a+1}}{a}\)
Therefore, the two solutions are:
\(x=\dfrac{-a-1+\sqrt{-a+1}}{a},\;\;x=-\dfrac{a+1+\sqrt{-a+1}}{a}\)
As both solutions have "a" as their denominator, a ≠ 0.
Note: When substituting a = 0 into the original equation, we are left with a linear equation, which only has one root. Therefore, this confirms that a ≠ 0.
Now we have found expressions for the two roots, we can set the distance between them to greater than 1:
\(\dfrac{-a-1+\sqrt{-a+1}}{a}-\left(-\dfrac{a+1+\sqrt{-a+1}}{a}\right) > \:1\)
\(\dfrac{-a-1+\sqrt{-a+1}}{a}+\dfrac{a+1+\sqrt{-a+1}}{a} > \:1\)
Simplify:
\(\begin{aligned}\dfrac{-a-1+\sqrt{-a+1}+a+1+\sqrt{-a+1}}{a}& > 1\\\\\dfrac{2\sqrt{-a+1}}{a}& > 1\\\\2\sqrt{-a+1}& > a\\\\(2\sqrt{-a+1})^2& > a^2\\\\4(-a+1)& > a^2\\\\-4a+4& > a^2\\\\a^2+4a-4& < 0\\\\(a+2)^2-8& < 0\\\\(a+2)^2& < 8\end{aligned}\)
\(\textsf{For\;\;$u^n < a$,\;\;if\;$n$\;is\;even\;then\;\;$-\sqrt[n]{a} < u < \sqrt[n]{a}|$:}\)
\(-\sqrt{8} < a+2 < \sqrt{8}\)
Therefore:
\(-\sqrt{8} -2 < a < \sqrt{8}-2\)
\(-2\sqrt{2}-2 < a < 2\sqrt{2}-2\)
So the possible values of "a" such that ax² + (2a + 2)x + a + 3 = 0 has two roots and the distance between them on the number line is greater than 1 are:
\(\large{\boxed{-2\sqrt{2}-2 < a < 2\sqrt{2}-2,\;\;a\neq0}\)
Exploring Square Roots and Rational Numbers ( PLEASE HELP )
Answer:
(To simplify the answers, I will refer to the first sentence of the question as part A and the second sentence as part B.)
Question 17
Part A: the square root is between 6 and 7
Part B: the square root is 6.5
Question 18
Part A: the square root is between 9 and 10
Part B: the square root is 9.4
(Extra: the answer in simplified radical form is 2√22)
Question 19
Part A: the square root is between 7 and 8
Part B: the square root is 7.9
(Extra: the answer in simplified radical form is 3√7)
Question 20
Part A: the square root is between 8 and 9
Part B: the square root is 8.7
(Extra: the answer in simplified radical form is 5√3)
Question 21
Part A: the square root is between 5 and 6
Part B: the square root is 5.5
Question 22
Part A: the square root is between 9 and 10.
Part B: the square root is 9.8
Step-by-step explanation:
First of all, it says you can use a calculator! If you do not know how to, let me know in the comments and I can try to help you out! Read the explanation to understand how to do this.
Question 17
Using a calculator, you get 6.48074069… for your decimal.
Rounding it to the nearest tenth, your answer would be 6.5
Now, to find the two consecutive whole numbers the square root is between…
However, there is another way to do this. Remember that 7x7=49. We know that 49 is greater than 42, so let’s see try out a number smaller than 7! 6x6=36. 42 is between 36 and 49, so the square root is between 6 and 7.
Another way to do this is… we know that the decimal is about 6.5, which is between 6 and 7, since those are the two whole numbers before and after that decimal!
Question 18
Using a calculator, you get 9.380833151… for your decimal.
This rounds to 9.4
The whole numbers surrounding this decimal are 9 and 10.
You can also do this by knowing that 9x9, or 9^2, is 81 and 10x10, or 10^2, is 100, and those are the numbers surround 88.
In non-decimal form (simplified radical), your answer can be 2√22.
Question 19
Using a calculator, you get 7.93725393… for your decimal.
This rounds to 7.9
The whole numbers surrounding this decimal are 7 and 8.
You can also do this by knowing that 7x7, or 7^2, is 49 and 8x8, or 8^2, is 64, and those are the numbers surround 63.
In non-decimal form (simplified radical), your answer can be 3√7.
Question 20
Using a calculator, you get 8.66025403… for your decimal.
This rounds to 8.7
The whole numbers surrounding this decimal are 8 and 9.
You can also do this by knowing that 8x8, or 8^2, is 64 and 9x9, or 9^2, is 81, and those are the numbers surround 75.
In non-decimal form (simplified radical), your answer can be 5√3.
Question 21
Using a calculator, you get 5.47722557… for your decimal.
This rounds to 5.5
The whole numbers surrounding this decimal are 5 and 6.
You can also do this by knowing that 5x5, or 5^2, is 25 and 6x6, or 6^2, is 36, and those are the numbers surround 30.
Question 22
Using a calculator, you get 9.84885780… for your decimal.
This rounds to 9.8
The whole numbers surrounding this decimal are 9 and 10.
You can also do this by knowing that 9x9, or 9^2, is 81 and 10x10, or 10^2, is 100, and those are the numbers surround 97.
Note: the symbol "^" means that the number following that symbol is an exponent. So 2^2 is 2 squared, \(2^2\), or 2 to the power of 2.
Hope that helps! <3
Disclaimer: I am not responsible for anything you get incorrect, as I only have the context and information you provide, and I give my response based on my knowledge supported with credible information from experts and online professional articles.
Tell whether angles are adjacent or vertical. Then find the value of x. 11-13
Answer:
11. The angles are vertical. x=25
12. The angles are adjacent. x=15
13. The angles are adjacent. x=20
Step-by-step explanation:
Find x and y. pls help
Answer:
y = 21
x = 8
Step-by-step explanation:
AB = 180
27 + 3y = 90°
-27 -27
-----------------------
3y = 63
÷3 ÷3
--------------
y = 21
x + 27 + 3y + 8x + 18 = 180
9x + 45 + 3(21) = 180
9x + 45 + 63 = 180
9x + 108 = 180
-108 -108
-----------------------
9x = 72
÷9 ÷9
----------------
x = 8
I hope this helps!
You pick a card at random. 6 7 8 9 What is P(divisor of 70)? Write your answer as a percentage. %
Answer:
Step-by-step explanation:
In the class election, the student who gets the highest number of votes will become the class president and the one who gets the second highest number of votes will become the class vice president. Tabitha and four other students were candidates. Tabitha’s teacher announces the election results as percentages of the total number of votes. Two hundred votes were cast in the election. In this activity, you will relate the percentages of the votes received to the actual numbers.
Question 1
The table gives the percentage of votes each candidate received. Use the information in the table to understand the results of the election.
Candidate Percentage of Votes
Tabitha 30%
Vincent 12%
Esmeralda 22%
Nancy 5%
Tyler 31%
Answer: Tyler for first and Tabitha for second
Step-by-step explanation: if you have 100% then the percentage would just be itself to 30% would be 30 and 12% would be 12 and 22% would be 22 and 5% would be 5 and 31% would be 31 so the Class president would be Tyler and the vice president would be Tabatha
rewrite the polynomial in the form ax^2+bx+c and then identify the values of a, b, and c. 6+9x^2
Answer:
see below
Step-by-step explanation:
6+9x^2
Rewriting in decreasing powers of x
9x^2 +0x + 6
ax^2+bx+c
a = 9
b =0
c = 6
Now that you have studied this lesson, write a summary of the concepts in your own words. Your summary should contain a description of the Commutative, Associative, and Distributive properties.
Answer:
is 84 the answer you where looking for?
write ordered pairs for four points that you can plot on the coordinate plane. each ordered pair must have a wide coordinate that is 2 units less than its X coordinate. plot the points. ( you choose a random ordered pair)
Describe a pattern for the points you plotted.
Answer:
4:2, 10:8, and 12:10 also, 15,13
Step-by-step explanation:
So first I knew the constant rate that the Y coordinate should be 2 less than the X coordinates so all of my numbers follow that rule. Have a good day hoped you benefited from my answer :)
REWARDING BRAINLY FOR CORRECT ANSWER
Answer:
The range is 10
Step-by-step explanation:
since it starts at 0 and goes till 9 thats 10 data points
Answer:
9
Step-by-step explanation:
Okay, so range is just the difference between the highest and lowest values, and because the lowest is 0, it's just 9 - 0, which obviously equals 9
So the range of the data in the dot plot is 9
hope this helps:)
finish this and answer every problem pls
rude we don't use those words here change it please
ok
Solve the formula for x.
V=2πrx+6πr2
Answer:
x=−18.849556r2+v/6.283185r
Step-by-step explanation:
Step 1: Flip the equation.
18.849556r2+6.283185rx=v
Step 2: Add -18.849556r^2 to both sides.
18.849556r2+6.283185rx+−18.849556r2=v+−18.849556r2
0r 2+6.283185rx=−18.849556r2+v
Step 3: Divide both sides by 6.283185r. 0r2+6.283185rx/
6.283185r = −18.849556r2+v/6.283185r
x=−18.849556r2+v/6.283185r
Let's see
\(\\ \rm\Rrightarrow V=2\pi rx+6\pi r^2\)
\(\\ \rm\Rrightarrow V=2\pi r(x+3r)\)
\(\\ \rm\Rrightarrow \dfrac{V}{2\pi r}=x+3r\)
\(\\ \rm\Rrightarrow x=\dfrac{V}{2\pi r}-3r\)
36 3/6 divided by 36 1/2
Answer:
Step-by-step explanation:
We have the same 36 so just eliminate them and we are left with 3/6 multiple by 2 and we have the final answer which is 1
Answer:
(1)
Step-by-step explanation:
Hope this helped:)
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
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
Can anyone figure this out? I’ll give you Brainliest!
Get the Goof
Answer:
Goofy did 5 as x instead of y
4x + 3(5)
Step-by-step explanation: