Answers
Answer:
the answers B and D are correct
Answer:
B & D
Step-by-step explanation:
It can-t be A, because that would mean 20², which equals 400, would equal 20.
B is correct because even though it's negative, negative times negative = positive, which would mean that (-sqrt of 20)(-sqrt of 20)=20.
C is wrong because sqrt -20 is an imaginary number,which is a completely different topic.
D is correct because it's the same thing as B, but without the 2 negaties cancelling each other out.
E is the same as A, except it's '-20' x '-20', whcih is still 400, which is still wrong
Hope this helps :)
Related Questions
A rectangular patio is 11 feet by 13 feet. What is the length of the diagonal of the patio?
Answers
Answer:
Step-by-step explanation:
use pythagoras
diagonal = [tex]\sqrt{11^{2} + 13^{2} } \\[/tex]
= [tex]\sqrt{290}[/tex] feet or 17.03 feet
please help!!!!!!!!
if XYZ ~ RST, find RS
Answers
Answer:
RS = 38
Step-by-step explanation:
20x - 12 = 18x + 12
2x = 24
x = 12
3(12) + 2 = 38
The value of the side of triangle RS is equal to 38.
What is the similarity?If two objects are having the same shape then they will be termed as similar. So in mathematics, if two figures have the same shapes, lines or angles then they are called similar.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that the sides of the triangle XYZ are, XY = 5x - 3, XZ = 60 and the sides of the triangle TR = 40, RS = 3x + 2.
The value of RS will be calculated as,
( 5x - 3 ) / ( 3x + 2 ) = ( 60 / 40 )
( 5x - 3 ) / ( 3x + 2 ) = ( 6 / 4 )
20x - 12 = 18x + 12
2x = 24
x = 12
RS = 3x + 2
RS = ( 3 x 12 ) + 2
RS = 36 + 2
RS = 38
Therefore, the value of the side of triangle RS is equal to 38.
To know more about similarities follow
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Question 3
20 pts
What is the area of the triangle below? (Just put in the number not the unit)
4.5 feet
4.5 feet
13.4 feet
8.8 feet
NO LINKS PLEASE HURRY
Answers
Answer:
14.96 is the area of the triangle
Put the following equation of a line into slope-intercept form, simplifying all fractions.
Answers
Answer:
y=1/2x-2
Step-by-step explanation:
2y=-4+x
2y=x-4 divide both sides by 2
y=1/2x-4/2
y=1/2x-2
Answer:
[tex]y = 0.5x - 2[/tex]
Step-by-step explanation:
Slope intercept form is
[tex]y = mx + b[/tex]
Our initial goal is to isolate y.
[tex]2y - x = -4[/tex]
Add x to both sides of the equation.
[tex](2y - x) + x = (-4) + x[/tex]
Simplify.
[tex]2y =x -4[/tex]
Divide both sides by 2.
[tex]\frac{2y }{2} = \frac{(x - 4)}2}[/tex]
Simplify.
[tex]y = 0.5x - 2[/tex]
after how many audio books will both book clubs cost the same amount.
Answers
Answer:
2 books
Step-by-step explanation:
10 + 5x = 16 + 2x
- 2x - 2x
10 + 3x = 16
-10 -10
3x = 6
/3 /3
x = 2
STOP AND HELP PLZzzzzzzz
Answers
Answer:
k = 2
Step-by-step explanation:
9 = k(6) - 3
12 = 6k
k = 2
Answer:
k = 2
Step-by-step explanation:
We know that in the coordinates (6, 9) 6 is X and 9 is Y. So, we can just plug that into the equation in the problem to get 9 = 6k - 3. Then, after solving, we get the answer as k = 2.
In Mr. Elliot's garden, 1 8 of the flowers are red, 1 4 of them are purple, and 1 4 of the remaining flowers are pink. If there are 128 flowers, how many flowers are pink?
Answers
Answer:
20
Step-by-step explanation:
Given that:
Red flowers = 1/8
Purple = 1/4
(1/8 + 1/4) = (1 + 2) / 8 = 3/8
Fraction left :
1 - 3/8 =. 5/8
Pink flowers :
1/4 of fraction left ;
1/4 * 5/8 = 5/32
Number of pink flowers
Total number of flowers = 128
5/32 * 128
640 / 32
= 20
20 pink flowers
will mark branily PPPPPPPLLLLLLLLLLLLLZzzzzzzzzzzz
Answers
Answer:
336
Step-by-step explanation:
trus
Answer:
336 in³
Step-by-step explanation:
8 x 7 x 6 = 336 in³
Also the volume will double
A cylinder shaped water tank has a diameter of 8 m and a height of 20 m.
What volume of water does the tank contain when it is 60% full?
Use 3.14 to approximate pi.
Enter your answer as a decimal to the hundredths place in the box.
___ m3
Answers
Answer:
602.88 cu ft.
Step-by-step explanation:
V = Bh where B is the area of the base, which is a circle in your problem.
Since the diameter is 8, the radius is 4.
So, B = [tex]\pi r^{2} = 3.14(4^{2} ) = 3.14(16) = 50.24[/tex]
V = Bh = 50.24(20) = 1004.8 cu ft = total volume of tank
60% of that volume is .60(1004.8) = 602.88 cu ft.
PLEASE HELP
Your friend is looking at laptops for
college, and is comparing the different
screen sizes. If a laptop has a height of 6
in and a diagonal of 17.5 in, use the
formula below to find the width of the
laptop screen. Round your answer to the
nearest tenths place
Answers
17.5 = √6² + w²
17.5² = 36 + w²
306.25 = 36 + w²
270.25 = w²
√270.25 = w
16.4392822 = W
= w = 16.44 in
6x + 7b - 7x + 10x
What is the answer to this question?
Answers
..............
Answer:7b+9x
Step-by-step explanation:hope I helped
Answer this - 3 - 3 (+2)
Answers
Answer:
-3-6= -9
.......................
Answer:
if you mean -3-3 +2 then it is -4
if you mean -3-3(2) then it is -9
Step-by-step explanation:
Can someone help me with this one?
Answers
For each expression, combine like terms.
Answers
2. 8x-1
3. 7x-4
4. 13x-7
:)
The scientific notation of 92960000
Answers
Answer:
9.296 x 10^7
Step-by-step explanation:
Answer:
9.296*10^7
Step-by-step explanation:
The scientific notation of 92960000 is 9.296 * 10 ^7
MS. Potts washed 2/3 of her laundry. Her son washed 1/4 of it. Who washed most of the laundry? How much of the laundry still needs to be washed?
Answers
Answer:
2/5 is greater than 1/4
so ms. potts washed most of the laundry
What type of angle relationship is shown?
Answers
Answer:
straight angle
Step-by-step explanation:
9x_15+2x_3=180
11x_18=180
11x=180+18
11x=198
x=198÷11
x=18
Answer:
The angles are a linear pair.
x = 18
Step-by-step explanation:
The angles are a linear pair, meaning the angles add up to 180 degrees.
(9x - 15) + (2x - 3) = 180
11x - 18 = 180
11x = 198
x = 18
a truck has a trailer that has a length of 16 ft a width of 7 ft and a height of 11 ft what is the volume
Answers
Answer:
1232 is the volume because 16×7×11
Answer:
The volume is 1,232 ft³
Step-by-step explanation:
Volume = lwh = Length × Width × Height =
[given that the length is 16, width is 7, and height is 11]
16 × 7 × 11
4 × 4 × 7 × 11
2 × 2 × 2 × 2 × 7 × 11
2 × 2 × 2 × 2 × 77
2 × 2 × 2 × 154
2 × 2 × 308
2 × 616
1232
________
The volume is the measurable capacity of an object or the metrical space that something holds or takes up.
Just like you multiply the net length and width to find the area of a 2 dimensional object, you can extend that 2d object so that is has height by multiplying by the given height.
Which two ordered pairs satisfy the equation y = 3x + 2 ?
* (0, 2) and (2, 8)
(1, - 1) and (- 2, 8)
(0, 2) and (- 1, 1)
(2, 8) and (0, 5)
Answers
I see (0,2) and (2,8) both on the line
With c we see (0,2) but (-1,1)
Is wrong (2,8) is right but not (0,5)
Your best bet would be (0,2) and (2,8) because they are both on the line.
Hope this helps
If two angles and a non-included side of one triangle are congruent to the corresponding two angles and side of another then the triangles are congruent
A. AAS
B. SAS
C. SSS
D. ASA
Answers
Answer:
AAS
................................
Answer:
AAS
Step-by-step explanation:
i took the quiz rn
a car travels a distance of 50 km in 30 minutes. what is the average speed
Answers
Answer:
100 km/hour, or 16.67 km/minute
Step-by-step explanation:
Question 3 plzzz thanks u
Answers
Answer:
the pic is blank we can't see
Step-by-step explanation:
HELP I NEED HELP ASAP
What is the sum of the solutions to the equation (3x-16)(2x+15)=0?
A. 13/240
B. 13/6
C. -13/240
D. -13/6
Answers
Answer:c
Step-by-step explanation:
Answer:
(3x-16)(2x+15)=0
A. 13/240
Simplify
x^2-9/x^2+x-12
Answers
Answer:
I love algebra anyways
the ans is in the picture with the steps
(hope it helps can i plz have brainlist :D hehe)
Step-by-step explanation:
Bobby earns $72 for the day and $6 for each delivery he makes. He wants to make $150 in work day. How many deliveries must Bobby make to reach his goal?
Answers
Answer:
He needs to make 13 deliveries
Find the distance from the center of a circle to a 14 m long chord if the diameter of the circle is 50 m.
(Draw a picture)
Answers
Answer:
700 I think...
Step-by-step explanation:
Multiply
What is the GCF of 4x^ 2 +6x
Answers
Answer:
The GCF of 4x^2 + 6x
is. (2x )
hope it helps
2x
1.
Prove that the roots of x^2 + (1 - k).x+k-3 = 0 are real for all real values of k
Answers
The roots of x^2 + (1 - k).x+k-3 = 0 are real for all real values of k
The equation is given as:
x^2 + (1 - k).x+k-3 = 0
For an equation to have real root, then the following must be true:
[tex]b^2 \ge 4ac[/tex]
In x^2 + (1 - k).x+k-3 = 0, we have:
a = 1
b = 1 - k
c = k - 3
So, we have:
[tex](1 - k)^2 \ge 4 * 1 * (k - 3)[/tex]
Evaluate
[tex]1 - 2k + k^2 \ge 4k - 12[/tex]
Collect like terms
[tex]k^2 - 2k - 4k + 1 + 12 \ge 0[/tex]
[tex]k^2 - 6k + 13 \ge 0[/tex]
Using a graphing calculator, the value of k is all real numbers
Hence, the roots of x^2 + (1 - k).x+k-3 = 0 are real for all real values of k
Read more about real values at:
https://brainly.com/question/6499629
Two airplanes leave an airport at the same time. An hour later they are 189 km apart. If one plane traveled 168 km and the other plane traveled 244 km during the hour, find the angle, x
between their flight paths. Round to the nearest thousandth.
need answer fast plz
Answers
Answer:
bro fr doe gfnyjtuhgbfvjmhnbvc
Step-by-step explanation:
Im so sorry yall!!!!!