Answers
Answer:
(a+b) (a-b) =a^2 - b^2
In this question a=2, b=square root of 5
So 2*2=4 square root of 5 times square root of 5 is 5
4-5=-1
Answer:
I believe the answer is -1.
Step-by-step explanation:
So I distributed,
2 x 2 = 4
[tex]-\sqrt{5}[/tex] x 2 = [tex]-2\sqrt{5}[/tex]
[tex]\sqrt{5}[/tex] x 2 = [tex]2\sqrt{5}[/tex]
[tex]\sqrt{5}[/tex] x [tex]-\sqrt{5}[/tex] = -5
4 [tex]-2\sqrt{5}[/tex] + [tex]2\sqrt{5}[/tex] - 5 = ?
the radicals cancel out and 4 -5 = -1
Related Questions
A student runs laps around a track. Each lap is 1/4 mile. The student runs 2 1/2 miles each day and has a goal to run a total of 45 miles. The student wrote this equation to find x, the number of days needed to complete the goal.
Answers
Answer:
x=18 days
Step-by-step explanation:
since the student runs 2 1/2 miles everyday divide that into 45 miles and you get 18 therefore x=18
What is the distance between the points M(–21, –7) and N(–5, –7)?
28 units
14 units
26 units
16 units
Answers
A baker uses a circular pan with a 24-inch diameter to make a pizza. What is the area of the pizza? Round to the nearest hundredths
A. 37.68
B. 75.36
C. 1808.64
D. 452.16
Answers
Answer:
D
Step-by-step explanation:
A = πr^2
A = π12^2
A = π144
A ≈ 452.16
Answer:
The answer is 452.16
Step-by-step explanation:
If you don't believe me you can use a circle calculator
Can someone solve this?
Answers
Answer:
The answer is A.
Step-by-step explanation:
Because if you compare the two "y" section on both graphs you will notice that the "Speedy Delivery" charges way more than the "Lightning Delivery ."
Hope this helps ,have a good day.
You are buying shoes online. The selling price is $29.99. The sales tax is 6.5% What is the total cost? Round to the nearest penny, if necessary.
Answers
Answer:
$31.94
Step-by-step explanation:
29.99 x 0.065 = 1.95
29.99 + 1.95= 31.94 :)
Answer:
$31.94
Step-by-step explanation:
Shidjdjzjzjzjzjzjzjzjzjzjzzjzjzjzjzjzj
Answers
Answer:
14130 yd³
Step-by-step explanation:
The formula of volume of sphere
[tex] = \frac{4}{3} \pi {r}^{3}[/tex]
The volume of the sphere
[tex] = \frac{4}{3} \times 3.14 \times {(30 \div 2)}^{3} [/tex]
[tex] = \frac{4}{3} \times 3.14 \times {15}^{3} [/tex]
[tex] = \frac{42390}{3} [/tex]
= 14130 yd³
Danielle has a $30 gift card to T-Shirt-paradise . She wants to use it to buy a rock band T-shirt and a glitter T-shirt. The rock band T-shirt costs $11.95. Let x represent how much Danielle can spend on a glitter T-shirt using her gift card.
Answers
x+11.95≤30
Then x≤30−11.95x≤30−11.95
x≤18.05x≤18.05Answer:
Step-by-step explanation:
The ratio of children to adults is 4 to 3. How many children are there if there are 2700 adults?
Answers
Answer:
2025 children
Step-by-step explanation:
4 2700
-- = --------
3 x
cross multiply
4x = 8100
x = 2025
The circle shown above is centered at the origin and contains the point (-4, -2).
What is the length of the diameter to the nearest tenth of the circle?
Answers
Answer:
8.9 units
Step-by-step explanation:
Since, the circle is centered at origin. So, coordinates of center are (0, 0)Point (-4, - 2) is located on the circle. So, distance between (0, 0) & (-4, - 2) will be the radius of the circle.[tex] \therefore \: r = \sqrt{ {( - 4 - 0)}^{2} + {( - 2 - 0)}^{2} } \\ \\ \therefore \: r = \sqrt{ {( - 4)}^{2} + {( - 2)}^{2} } \\ \\ \therefore \: r= \sqrt{16 + 4} \\ \\ \therefore \: r= \sqrt{20} \\ \\ \therefore \:2 r= 2 \sqrt{20} \\ \\ \therefore \:2 r=8.94427191 \\ \\ 2r = 8.9 \: \\ \\ diameter \: = 8.9 \: units[/tex]
The figure is a ____.
1. Square
2. Rectangle
3. Triangle
The figure has _____ sides.
1. Three
2. Four
3. Five
The figure has the dimensions of _____.
1. Length, Width, and height
2. Length, Width, Base, and height
3. Length and Width
(also ignore my mouse)
Answers
The figure is a rectangle.
The figure has Four sides.
The figure has the dimensions of Length and Width.
Sorry if its wrong, I have bad memory
2. Four
3. Length, width, and height
What is a decimal that is equivalent to the fraction 44/100
Answers
Answer:
0.44
Step-by-step explanation:
44/100 as a decimal is 0.44.
Hope this helped!!!
The decimal equivalent to the fraction 44/100 is 0.44.
We have,
To find a decimal equivalent to the fraction 44/100, we can simply divide the numerator (44) by the denominator (100):
44 ÷ 100 = 0.44
The concept used to find the decimal equivalent of a fraction is division.
By dividing the numerator by the denominator, we obtain the decimal representation of the fraction.
Therefore,
The decimal equivalent to the fraction 44/100 is 0.44.
Learn more about expressions here:
https://brainly.com/question/3118662
#SPJ6
maths question solve it quick pls
Answers
Answer:
(a)2 1/4
(b)1 1/2
(c)1 1/18
(d)5 7/12
Step-by-step explanation:
(a) 11/3 - 17/12 = 44/12 - 17/12 = 27/12 = 9/4 = 2 1/4
(b) 33/10 - 18/10 = 15/10 = 3/2 = 1 1/2
(c) 41/9 - 7/2 = 82/18 - 63/18 = 19/18 = 1 1/18
(d) 47/6 - 9/4 = 94/12 - 27/12 = 67/12 = 5 7/12
Hope it helped :)
3 8/12 - 1 5/12 = 2 3/12 = 2 1/4
b) 3 3/10 - 1 4/5 we’ll convert to 10ths by multiplying the numerator and denominator of the second mixed number by two.
3 3/10 - 1 8/10
Now we need to borrow from the three wholes to create more tenths
2 13/10 - 1 8/10 = 1 5/10 = 1 1/2
Or you can convert the first one to 33/10, and the second one to 9/5, which becomes 18/10.
33/10 - 18/10 = 15/10 = 1 1/2
Do whichever one makes more sense to your brain.
c) 4 5/9 - 3 1/2 we will convert both to 18ths.
4 10/18 - 3 9/18 = 1 1/18
d) 7 5/6 - 2 1/4 we will convert both to 12ths.
7 10/12 - 2 3/12 = 5 7/12
Please let me know if you have questions on these.
name the quadrant in which the point (7,-10) is located PLEASE HELP I NEED IT NOW PLS
Answers
Step-by-step explanation:
the point (7,-10) is located in 1 at quadrant
Answer:
Quadrant 4
Step-by-step explanation:
To find this out, simply get a coordinate plane and plot the coordinate point.
OR
You can remember this formula for coordinate points:
Quadrant 1: (x,y)
Quadrant 2: (-x,y)
Quadrant 3: (-x,-y)
Quadrant 4: (x,-y)
Point (7,-10) has a positive x-coordinate and a negative y-coordinate. This means it belongs in quadrant 4.
Find the point on a circle that has a radius of 8 with an angle of rotation of 130 degrees centered at (-3,5)?
Answers
Is it
Jusmfjfkddnfnfnfnjdf just to let me post :)
What is the value of x?
Answers
Answer:
x = 21
Step-by-step explanation:
The two angles shown are supplementary.
3x + 10 + 6x - 19 = 180
9x - 9 = 180
9x = 189
x = 21
4x+2y=16
3x+4y=17
i need help
Answers
Answer:
x = 3 , y = 2
Step-by-step explanation:
What is the solution to this equation? 3v(1/8-x)=-1/2
Answers
Answer:
v = −4/−24x+3
Step-by-step explanation:
Let's solve for v.
3v(1/8−x) = −1/2
Step 1: Factor out variable v.
v(−24x+3/8) = −1/2
Step 2: Divide both sides by (-24x+3)/8.
v(−24x+3/8)/−24x+3/8 = −1/2/−24x+3/8
v=−4/−24x+3
1 point
Every five years in March, the population of a certain town is recorded. In
1995, the town had a population of 4500 people. From 1995 to 2000, the
population increased by 15%. From 2000 to 2005, the population
decreased by 4%. What was the town's population in 2005? *
4527
4968
4995
5382
Answers
Answer:
So, the town had a population on 4,500 people in 1995. Then from 1995 to 2000, the population increased by 15%.
Convert 15% to a decimal by dividing it by 100. Then, the population in 1995 by this decimal.
15% ÷ 100 = 0.15
4,500 × 0.15 = 675
Now, add this to the population in 1995.
4,500 + 675 = 5,175
This means that the town had a population of 5,175 people in 2000.
To calculate the town's population in 2005, repeat the same steps we took to find the population in 2000, except this time we will subtract instead of add since the population DECREASED.
4% ÷ 100 = 0.4
5,175 × 0.4 = 207
5,175 - 207 = 4,968
FINAL ANSWER:
The town had a population of 4,968 in 2005.
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Step-by-step explanation:
Write down the integer values satisfied by the diagram
Answers
Answer:
{0, 1, 2, 3}Step-by-step explanation:
The diagram includes the interval:
(-1, 3]The integer values in the given interval are:
{0, 1, 2, 3}look at pic 10 pts will mark brainilest
Answers
Answer:
1,400
Step-by-step explanation:
Evaluate for x=2
100(2^3+2^2+2)
=1400
PLZ give me brainliest
Gino wants to leave at least 20% tip on his restaurant bill of $197.40. Approximately how much tip should he add to the bill?
Answers
What would y be if x was equal to 410 billion?
Answers
Answer:
it would be any number because variables don't mean a certain,number
Make frequency tables for the following data sets. Include columns for relative frequency. Also, make a bar graph for the frequency
Final grades of 30 students in a math class: AAAAAABBBBBBCCCCCCCCCCFFF
Answers
3.
A man has 6 packages. Their average weight is 18 kg. Find the total
weight of the 6 packages.
Answers
Answer:
108 kg for all 6 packages
Step-by-step explanation:
Answer:
=108
Step-by-step explanation:
18 × 6 will give you 108
The amount y of your friend's allowance if the amount she receives is $5 more than the amount x you receive.
Answers
answer:
y=x+5
**i don't know what it is that you need but i hope this helps**
good luck :)
have a nice day!
What is the probability of choosing a king from a deck of cards? Type your answer as a fraction.
Answers
Answer:
4/52 or 1/13
Step-by-step explanation:
there are only 4 kings; diamond, Heart, Spades and Clubs.
Can someone help me with this, please!!!
Answers
Answer:
The answer is C
Step-by-step explanation:
Both triangles are very similar
A standard bathtub holds 60 gallons of water. A full tub drains 12 gallons per minute. Which of the following tables best represents this situation?
Answers
If you have 60 gal and 5% (12) is being drained per min it will only take 5 mins to drain all the water
I don't know if I solved it the way you needed me to, but I hope it helps
I don't know what the answer choices are so yeah.
what is the unit price of 12 cupcakes for 25 dollars
Answers
Answer:
Unit price of 12 cupcakes for 25 dollars = 25/12
= 2.08 dollars
Answer:
The unit price would be $2.08 for a cupcake because if you divide 12 and 25, you would get 2.08.
Step-by-step explanation:
Express the relation in a table:(2,1),(4,5),(3,3),(1,(2)
Answers
9514 1404 393
Answer:
see attached
Step-by-step explanation:
Once the data is entered into a spreadsheet, it is convenient to sort the table by the input values. The relation is unchanged, but it may be easier to work with that way.
The table is shown below.