Answers
Answer:
Step-by-step explanation:
I'm not sure how to solve the first one, but I'll try to simplify sqrt3-1/sqrt3+1. I simplified it and I got 2-sqrt3. Does that help?
For question 2, I got -0.251.
Answer:
1) [tex]\frac{\sqrt{3}-1 }{\sqrt{3}+1}=\frac{(\sqrt{3}-1)^{2} }{(\sqrt{3}+1)(\sqrt{3}-1) }=\frac{4-2\sqrt{3} }{3-1}=\frac{4-2\sqrt{3} }{2}=2-\sqrt{3}[/tex]
but [tex]\frac{\sqrt{3}-1 }{\sqrt{3}+1 }=a+b\sqrt{3}[/tex]
=> a = 2
b = -1
2) [tex]\frac{\sqrt{10}-\sqrt{15} }{2\sqrt{2} }=\frac{\sqrt{20}-\sqrt{30} }{4}=\frac{2\sqrt{5}-\sqrt{30} }{4}=-0.251[/tex]
Step-by-step explanation:
Related Questions
anyone mind helping me out ?
Answers
Answer:
18/3
Step-by-step explanation:
6x3=18
Write an equivalent ratio described in the situation below. The ratio of boys to girls is 5/2
Answers
HEY WEEBS CMERE WE NEED TO HAVE A GATHERING WHOOOOOOOOOOOOO
Answers
Answer:
Hello
Step-by-step explanation:
WILL MARK BRAINLIEST! PLZ ANSWER!
Use the Pythagorean Theorem to find the value of x. Round answers to the nearest tenth.
Answers
Answer: 17.5
Step-by-step explanation:
[tex]a^2+b^2=c^2\\9^2+15^2=c^2\\81+225=c^2\\c=17.5[/tex]
Answer:
B) x=17.5
Step-by-step explanation:
9^2+15^2=x^2
x^2=81+225=306
x=17.5
*NEED ANSWER ASAP* What are the digits that repeat in the smallest sequence of repeating digits in the decimal equivalent of 1/9?
Answers
Answer:
= 0.1111111... = 0.1 (repeating)
Thus, 1 is the only repeating digit that is repeating the infinite number of times
Step-by-step explanation:
Answer:
1 is repeating
Step-by-step explanation:
I need points
A tent that initially sold for $68.00 is on sale for 21% off. What is the sale price of the tent?
a. $41.28
b. $47.00
c. $47.00
d. $323.81
Answers
Answer:
Hey!
Try this!
Take the original price.
Divide the original price by 5.
Alternatively, divide the original price by 100 and multiply it by 20.
Subtract this new number from the original one.
The number you calculated is the discounted value.
Enjoy your savings!
Answer:
Step-by-step explanation:
100-21 gives you 79 so 68.00- .79, however, that gives you 53.72
PLEASE HELP ME WITH MARK AS BRAINLIEST
Answers
Answer: 12
Step-by-step explanation:
I don’t know if I’m right but I’m Sure it’s 12
I need help with this
If x + 3 /3 = y + 2/ 2 ,then x/ 3 =
Answers
Answer:
First solve for x
then substitute
Step-by-step explanation:
[tex]\frac{x+3}{3}= \frac{y+2}{2}[/tex]
[tex]6(\frac{x+3}{3}=\frac{y+2}{2})[/tex]
2x + 6 = 3y + 6
2x = 3y
[tex]x = \frac{3y}{2}[/tex]
If [tex]\frac{x+3}{3}= \frac{y+2}{2}[/tex] then [tex]\frac{x}{3}[/tex] =
[tex]x = \frac{3y}{2} /3 = \frac{y}3}[/tex]
shawn sells 36 cars in 4 weeks. Brett sells 56 in 7 weeks. who sells more cars?
Answers
Answer:
shawn sells more cars i had this question before:)
Step-by-step explanation:
give brainliest if helped :)
What is the area of JKLM?
Answers
Answer: 96in.^2
Step-by-step explanation:
Ok so first we need to find the missing width of figure NPQR and we can do that by dividing the area by the length to solve for height. so 294/21 is 14 so the missing side of NPQR is 14. With me so far? now since these figures are similar lets find out how similar. so 21/12= 1.75 so JKLM increased in dilation by 1.75 to get to NPQR. So now that we found the missing side from NPQR we can divide that by 1.75 to find the missing side of JKLM now. So 14/1.75= 8. So 8 is the missing side of JKLM. Now all we have to do is multiply. So 8*12= 96 or 96in.^2
Colton has 888 comedy movies, 666 action movies, 555 fantasy movies, and 111 drama movie on his list of favorite movies. For every 555 movies on the list, there are 222 \_\_\_\_____\_, \_, \_, \_ movies.
Answers
Answer: Comedy
Step-by-step explanation:
Find out the percentages of each of the movies. First find the total quantity.
= 888 + 666 + 555 + 111
= 2,220 movies
Comedy = 888/2,220 * 100% = 40%
Action = 666 / 2,220 * 100% = 30%
Fantasy = 555/2,220 * 100% = 25%
Drama = 111/ 2,220 * 100% = 5%
222 movies out of 555 is:
= 222 / 555 * 100%
= 40%
222 movies out of 555 movies will therefore be comedy.
Answer:
222/555 are comedy
PLZ HELP WITH THESE AND FAST!!!!!!!!!!!!
Answers
Answer:
(11+4)/3*square root of 64=40
Step-by-step explanation:
11+4=15
15/3=5
the square root of 64 is 8
5*8=40.
Soren's favorite cereal is on sale. A 20-ounce box costs $4.59. A smaller, 12-ounce box costs $2.52. Which one costs less? I alr know which one costs less I just wanna know how many cents it is per ounce.
Answers
I think the answer is 5 21 smaller.
I Hope this is the right answer to you! ^_^
Erin buys a bag of peanuts that weighs 3/4 of a pound later that week they the bag is two-thirds full how much does a bag oftwo-thirds full how much does a bag of peanuts weigh now
Answers
But then someone ate 1/3 of the peanuts, and the bag is now only 2/3 full.
This means that there is only two-thirds of the original 3/4 pound remaining now.
This can be simply solved by: 3/4 * 2/3 = 2/4 = 1/2 pound
Hope this helps :)
Which of the following is equal to the expression below?
A.
B.
C.
D.
Answers
Answer: I think it might be B. Sorry if incorrect
Step-by-step explanation:
Work out the size of angle X
Answers
Answer:
Here,
50 + x = 120 ( exterior angle is equal to tge sum. of opposite interior angles )
or, x = 120 - 50
or, x = 70 degree
Hope this helped
Hope this helped ALL THE BEST !!
Given that the triangles are similar, find the value of x. Find the length of NR.
S
T
40
60
R
2x-2
8
N
M M
X
NR =
Answers
Given:
Figure of similar triangles.
To find:
The value of x and the measure of NR.
Solution:
In triangle RST and RMN,
[tex]\angle SRT\cong \angle MRN[/tex] (Vertically opposite angles)
[tex]\angle RST\cong \angle RMN[/tex] (Alternate interior angles)
[tex]\Delta RST\sim \Delta RMN[/tex] (By AA property of similarity)
We know that, corresponding sides of similar triangles are proportional.
[tex]\dfrac{RS}{RM}=\dfrac{RT}{RN}[/tex]
[tex]\dfrac{40}{8}=\dfrac{60}{2x-2}[/tex]
[tex]5=\dfrac{60}{2x-2}[/tex]
[tex]2x-2=\dfrac{60}{5}[/tex]
On further simplification, we get
[tex]2x=12+2[/tex]
[tex]x=\dfrac{14}{2}[/tex]
[tex]x=7[/tex]
The value of x is 7.
Now,
[tex]NR=2x-2[/tex]
[tex]NR=2(7)-2[/tex]
[tex]NR=14-2[/tex]
[tex]NR=12[/tex]
Therefore, the value of x is 7 and the measure of NR is 12 units.
find the product of 3.5 and 0.22
Answers
Answer: 0.77
Step-by-step explanation:
[tex]3.5 \times 0.22 = 0.77[/tex]
Just multiply the two numbers together.
Find the missing length in the trapezoid and explain how to get it
Answers
Answer:
10
Step-by-step explanation:
Use Pythagorean theorem,
hypotenuse² = 8² + 6²
= 64 + 36
= 100
hypotenuse = √100 = √(10*10)
Hypotenuse = 10
Which set of angle measures can be used to form a triangle ? A : 40 , 60 , 85 ,, B : 45 , 60 , 60 , C : 30 , 60 , 90 , D : 45 , 90 , 90
Answers
Answer:
D)45,90 90 this is the answer
Answer:
C) 30, 60, 90
Step-by-step explanation:
all three angles must add up to 180
Sixty percent, or 12, of the students in Alex's class are going to the movies. 2/3, or 14, of the students in Mary's class are going to the movies. Which class has more students? Justify your answer using equations.
Answers
Answer:
Mary's class.
Step-by-step explanation:
One way to do this is to figure out how many students are in Alex's class and how many students are in Mary's class.
60% of Alex's class is 12 students
[tex]\frac{12*100}{60}[/tex] = [tex]\frac{1200}{60}[/tex]= 20 students
[tex]\frac{2}{3}[/tex] or 66.66% (repeating) of Mary's class is 14 students
[tex]\frac{14*100}{66.66}[/tex] = [tex]\frac{1400}{66.66}[/tex] = 21 students
(^^66.66 repeating)
Mary's class has more students than Alex's class.
Find x (I have a picture of the problem)
Answers
Answer:
well, am confidnet that it is 4
Step-by-step explanation:
Write an equation for the following description.
y is nine times the value of x.
Answers
Answer: y=9x
Step-by-step explanation:
Answer:
y = 9x
Step-by-step explanation:
Have a great day
What do all of the numbers in the box below have in common 60% 0.57 0.9 120%
Answers
Answer:
First of all, the numbers are all positive numbers
They can all be divided by the number 3
They are all rational numbers, this means that they can be expressed as a ratio of two numbers
If you take out a loan for $400.00 at a rate of 8% simple interest and pay it off over 1 year, what will be your monthly payment? You will pay _____ a month.
10 points, please answer.
Answers
Answer:
$36 a month
Step-by-step explanation:
400÷0.08=32
400+32=$432
432÷12=$36
Write these numbers in size order start with the smallest
7/9
8/11
0.79
84%
4/5
Answers
7/9 = 0.777
8/11 = 0.727
0.79 = 0.79
84% = 0.84
4/5 = 0.8
Now line them back up in order from least to greatest based on the decimal value.
Final answer:
8/11, 7/9, 0.79, 4/5, 84%
FREE BRAINLIEST! if you can answer this correctly ill give you brainliest and answer some of the questions you have posted :) thank you very much!!!
Answers
Answer:
-9 1/4
Step-by-step explanation:
−37/4
Decimal Form:
−9.25
Mixed Number Form:
−9 1/4
A car can travel 40 miles per gallon of petrol . How many kilometres can it travel on 5 gallons of petrol?
Answers
Answer:
6(172) = 1032
Step-by-step explanation:
Since 42 gallons is 6 times the 7 gallons
he will go 6 times as far
The enrollment at a university increased from 1,000 students to 6,000 students over a 6-year period. What was the percent increase in enrollment over that time period?
Answers
Answer: 500%
Step-by-step explanation:
The percent increase is calculated as:
= (New number of students - Old number of students) / Old number of students * 100%
= (6,000 - 1,000) / 1,000 * 100%
= 5 * 100%
= 500%
Someone plz help me I will give brainliest
Answers
Answer:
-6 !! (degrees c)
Step-by-step explanation:
since 0 is the freezing point, its 10 degrees above so just 10 ...
then if it drops 16, itd b 10 - 16, so its -6 !!
i hope this made sense and that it helped !!