Answer:
[tex]\huge\boxed{\sqrt{81+18\sqrt7+7}=9+\sqrt7}[/tex]
Step-by-step explanation:
[tex]\sqrt{81+18\sqrt7+7}=(*)\\\\81=9^2\\7=(\sqrt7)^2\\18\sqrt7=(2)(9)(\sqrt7)\\\\(*)=\sqrt{9^2+(2)(9)(\sqrt7)+(\sqrt7)^2}\\\\\text{use}\ (a+b)^2=a^2+2ab+b^2\\\\=\sqrt{(9+\sqrt7)^2}\\\\\text{use}\ \sqrt{a^2}=|a|\\\\=|9+\sqrt7|=9+\sqrt7[/tex]
What is the radius of a circle whose equation is (x + 5)2 + (y - 3)2 = 427
2 units
4 units
8 units
16 units
Answer:
8 unit
Step-by-step explanation:
i tkink (x+5)2+(y-3)2=427
What's the smallest possible 8-digit number that has all different digits ?
Answer:
10000000
Step-by-step explanation:
Answer:
01234567
Step-by-step explanation:
It is the smallest number that I can think of that has all different digits and 8 digits. Stay safe and have a wonderful day! Peace! ✌
Use sigma notation to represent the sum of the first six terms of the following sequence: −10, −13, −16, …
Answer:
c
Step-by-step explanation:
i took the test and got it right so... and do you have Mr. Hoffman
The sum of the first six terms of the following sequence is ∑(from i=1 to 6) (-10 - 3(i-1)), the correct option is A.
What is the sum of terms of a geometric sequence?Lets suppose its initial term is f=a , multiplication factor is r
and let it has total n terms, then, its sum of a geometric sequence is given as:
[tex]S_n = \dfrac{a(r^n-1)}{r-1}[/tex]
(sum till nth term)
We are given that;
The sequence; −10, −13, −16, …
Now,
The given sequence is an arithmetic sequence with first term (a1) = -10 and common difference (d) = -3.
Using this formula, we can find the first six terms of the sequence as follows:
a1 = -10
a2 = -10 + (-3) = -13
a3 = -10 + 2(-3) = -16
a4 = -10 + 3(-3) = -19
a5 = -10 + 4(-3) = -22
a6 = -10 + 5(-3) = -25
We can represent the sum of the first six terms using sigma notation as:
∑(from i=1 to 6) ai = (-10) + (-13) + (-16) + (-19) + (-22) + (-25) = -105
The sum of the first six terms of the given sequence is -105.
Using sigma notation, we can write this as:
∑(from i=1 to 6) (-10 - 3(i-1)) = -105
Therefore, by the geometric sequence the answer will be ∑(from i=1 to 6) (-10 - 3(i-1)).
Learn more about sum of terms of geometric sequence here:
brainly.com/question/1607203
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Find the mean absolute deviation (MAD) of the data in the dot plot below.
Answer: The MAD is 1.6
Step-by-step explanation:To find the mean absolute deviation of the data, start by finding the mean of the data set. Find the sum of the data values, and divide the sum by the number of data values. Find the absolute value of the difference between each data value and the mean: |data value – mean|.
What is the percent of change in the cost of a DVD set that originally sold for$69.99 and is now on sale for $44.99? Round your answer to the nearest whole number.
Answer: 36%; yes, the % change is equal to the percent discount
Step-by-step explanation:
Initial price = $69.99
Final price = $44.99
change in price = |(final - initial)|
change in price = |(44.99 - 69.99)|
change in price = $25
25/69.99 = x/100
100(25/69.99) = x
100(0.357) = x
35.7% = x
x = 36%
Solve the equation.
51 – 2z - 8z = 23
Answer: z=2.8
This is how I do!
Step-by-step explanation:
51-2z-8z=23
We simplify the equation to the form, which is simple to understand
51-2z-8z=23
We move all terms containing z to the left and all other terms to the right.
-2z-8z=+23-51
We simplify left and right side of the equation.
-10z=-28
We divide both sides of the equation by -10 to get z.
z=2.8
Answer:
Z=2.8
Step-by-step explanation:
51-10z=28
(/10) =2.8
Natalia has 48 tiles. Write a factor pair for the number 48.
Answer:
(12,4)
Step-by-step explanation:
Answer:
A factor Pair is like 5x5=25
So one for this would be 4x12=48
If the solutions of a quadratic equation are x = 7 and x = -5 write the possible trinomial these solutions could have derived from.
PLEASE HELP 100 POINTS
HELP ME FIND THE MEAN
23, 5, 7, 18, 34, 9, 14, 18, 34, 28, 42, 16
Answer:
Hello! The answer is 20.66
Step-by-step explanation:
1. You have to add up all the numbers in the set (248)
2. You have to divide by how much numbers are in the set by their added amount. (12)
248 ÷ 12 = 20.66
Hope This Helps ;)
Please mark brainliest :)
Answer:
20.66666.... or 20 2/3
Step-by-step explanation:
the average i added all up and divided by 12
PLEASE MAKE BRAINLIEST
Rita had a roll of film developed for $7.38. Her flash wasn't working so only 9 pictures turned out. How much did each picture cost her?
A.
$16.38
B.
$1.64
C.
$0.82
D.
$66.42
Answer:
D. $66.42
Step-by-step explanation:
If I'm correct (which I highly doubt...)
You multiply 7.38 and 9
That should give $66.42
Sorry if I'm wrong...
And if I'm wrong, my second option would be C. $0.82
Solve: -2 < x + 3 < 5
Answer:
The answer is
[tex] - 5 < x < 2[/tex]
Step-by-step explanation:
First you have to seperate them :
[tex] - 2 < x + 3[/tex]
[tex]x + 3 < 5[/tex]
Next you can solve it by moving all the unrelated terms to the other side :
[tex] - 2 < x + 3 \\ - 2 - 3 < x + 3 - 3 \\ - 5 < x \\ x > - 5[/tex]
[tex]x + 3 < 5 \\ x + 3 - 3 < 5 - 3 \\ x < 2[/tex]
Answer:
-5 < x < 2
Step-by-step explanation:
Subtract 3 from each of the three sides.
-2 < x + 3 < 5
-2 - 3 < x + 3 - 3 < 5 - 3
-5 < x < 2
Which of these numbers is between 2 and 3 on the number line?
A. – 4
B. 3
O c.-2
D. - 5
3
Step-by-step explanation:
it is the only positive no. to exist in the spam
Answer:
B. 3
Step-by-step explanation:
If there are inclusion points on the numberline, then 3 is the only viable choice, as the only 2 whole numbers that can work is 2 & 3. If there is no inclusion, then none, as it will have to be a decimal (or fraction) between 2 & 3.
PLS HELP ME WOULD REALLY appreciate It!!!
Answer:
C. Acute and Isosceles
Step-by-step explanation:
Acute means the angles are less than 90 degrees. All of the triangles angles are less than 90 degrees.
Isosceles means they have 2 sides of equal length. In the triangle, there are 2 sides with the length of 6 in, making this an isosceles triangle
Please help! Will give brainliest, thanks and more points.
Look at the picture.
Answer:
1182
Step-by-step explanation:
(8x 8x 6)/2= 192
(11x 9x 10)= 990
Answer:
1182
Step-by-step explanation:
Jason and his friend are playing a game with a spinner that has four sections: black, white,pink, and blue. They record their results in this table. Match the relative frequencies to the correct outcomes.
Answer:
the relative frequency of the spinner landing on black - 0.28
the relative frequency of the spinner landing on white - 0.22
the relative frequency of the spinner landing on pink - 0.24
the relative frequency of the spinner landing on blue - 0.26
Step-by-step explanation:
hope this helps!:)
A bag of candy has 21 mini snickers bars. It has 13 more mini butterfingers bars then snickers bars. How many mini candy are in the bag
Answer:55
Step-by-step explanation:
Answer:
55
Step-by-step explanation:
21+21+13
Choose equation that best matches the table of x- and y- values
Answer:
y = x / 2 + 4
Step-by-step explanation:
Just plug the numbers in.
The answer is y = x / 2 + 4
Answer:
Step-by-step explanation:
it is y= 1/2 +4
Which of the following is
NOT a statistical question?
A.How many chocolates are
defect- free at a factory, each
day this month?
B. How many customers start a
new cell phone plan each day
after a sale starts?
C.How much media do American
consumers watch each day?
D.What is the legal age of
voting in Alabama?
Answer:
D
Step-by-step explanation:
There is not a variety of answers like the other options.
Hope this helps!!! PLZ MARK BRAINLIEST!!!
In the figure, b and c are parallel lines. Which of the following statements are true?
1.Joe claims the measure of angle 3 is equal to 90 degrees.Is he correct?why or why not
2.state the measure of angle 5 and how you know
Thank you!
Answer:
1. No, Joe is not correct
2. [tex]\angle 5=72^{\circ}[/tex]
Step-by-step explanation:
Given: b and c are parallel lines
To find:
1. whether the given statement is correct or not
2. [tex]\angle 5[/tex]
Solution:
1.
Sum of two angles that form a linear pair is equal to [tex]180^{\circ}[/tex]
[tex]\angle 3+72^{\circ}=180^{\circ}[/tex] (linear pair)
[tex]\angle 3=180^{\circ}-72^{\circ}=108^{\circ}\neq 90^{\circ}[/tex]
So, Joe is not correct
2.
If two lines are parallel then alternate interior angles are equal.
As b and c are parallel lines,
[tex]\angle 5=72^{\circ}[/tex] (alternate interior angles)
Find the minimum value of the parabola y = x2 + 4x.
Answer:
(-2,-4)
Step-by-step explanation:
if there are 5280 feet in every mile, then what is the soeed if the car that is traveling 35 miles per hour in feet per second
Answer:
51
Step-by-step explanation:
Factor the GCF:
24x3 + 8x
Answer:
8x(3x^2 +1)
Step-by-step explanation:
24x^3 + 8x
We can factor out 8x
8x(3x^2 +1)
Simplify: -5g + 2h - 3g + g -2h
Answer: The answer is -7g
Step-by-step explanation:
-5g+2h-3g+g-2h
-5g+2h-3g+g-2h
=-7g+2h-2h
=-7g
geometry angles!!!
Answer:
25) x = 18 26) x = 50
Step-by-step explanation:
25) 108 + 4x = 180
108 + 4x = 180
-108 -108
4x = 72
x = 18
26)
101 + (x + 29) = 180
101 + 29 + x = 180
130 + x = 180
-130 -130
x = 50
ANSWER ASAP! I GIVE BRAINLIEST! ALREADY FOUND ANSWER BUT DO NOT KNOW IF CORRECT!
Answer:
(-4, -1)
Step-by-step explanation:
The solution of the system is always where to two lines intercept, or meet.
QUICK!!!
SOLVE THIS PROBLEM!!!
2-6(-5t+1)
Answer:
30t−4
Step-by-step explanation:
2−6(−5t+1)
Distribute:
=2+(−6)(−5t)+(−6)(1)
=2+30t+−6
Combine Like Terms:
=2+30t+−6
=(30t)+(2+−6)
=30t+−4
Look at the attached picture
Hope it will help you
Good luck on your assignment
Meera has been visiting banks all day trying to find the best compound interest rate for her savings account. The banks have decided that instead of telling her their rate, they are going to give her the equation that will calculate her current balance after t years. Below are the equations each bank gave to Meera, where f(t) is the balance after t years and P is the principal amount to be placed in the savings account. Select the equation of the bank that has the greatest compound interest rate. Select one:
A. f(t) = P(1.07)t
B. f(t)= P(1.03)2t
C. f(t) = P(1.02)4t
D. f(t) = P(0.90)t
Answer: C.
f(t) = P(1.02)4t
Step-by-step explanation:
f(t) = P(1.02)4t will have the greatest compound interest because the interest is on quarterly bases with an increment of 1.02 and the rate of 8%
Note : 8/100 × 1/4 = 0.02
There is no increment in D and A is yearly based. Option C is for 6 month.
I’m not really sure how to do these problems.
Answer:
Step-by-step explanation:
Answer:
Step-by-step explanation:
Cole buys nine movie tickets. adult tickets cost $13 and children’s tickets cost $7.50. if he spent a total of $78.50. How many children tickets did he buy?
Answer:
7 children tickets
Step-by-step explanation:
what i did is 7.5 times 9 which gave me none
then i did 7.5 times 8 which also is none
then lastly id di 7.5 times 7 plus 13 times 2 which gives me 78.50
Answer:
You would need 7 children tickets
Step-by-step explanation:
Now please make me brainliest
Choose the correct word(s) that completes each sentence. PLS HELP BEST GETS BRAINLESST
Answer:
meter and then gallon
Step-by-step explanation:
i hope this helps :)
Answer:
meter and gallon
Step-by-step explanation: