1.) No
2.) No
3.) Yes
4.) Yes.
PLZ help me with this :(
Part 1: Simplify √250
Part 2: Classify the number above as rational or irrational
Level 3 (Proficient: 85%)
Part 1: Simplify √150x*5
Part 2: Is the follow expression rational or irrational and why? 2√4+7
Level 4 (Distinguished: 100%)
Part 1: Simplify 13√750x*5 y*8
Part 2: Create two unique expressions each involving 1 square root and at least 1 operation (adding, subtracting, multiplying, dividing). Make 1 results in a rational number and the other result in an irrational number. Explain your reasoning for both.
Explanation:
Level 2
Part 1: √250 would be simplified to 5√10, because you need to find two factors that equal 250. 25 multiplied by 10 are two factors that you can utilize. Because 25 is a perfect square, it could be reduced to 5. Because 10 isn't a perfect square, you leave it as a radical.
Part 2: √250 is an irrational number because it's a non-terminating decimal and you cannot convert it into a fraction, so it wouldn't be rational.
Level 3
Part 1: √150x^5 would be simplified to 5x^2√6x. Again, find two factors that equal the product, 150. 25 multiplied by 6 are two factors that are useable. Just like the first question, 25 is a perfect square, so it can be reduced to 5. 6 is not a perfect square, so you would leave as a radical. Now, moving onto x^5. You can factor out x^4, because it's a perfect square. x^4 can become x^2. Move x^2 next to 5 and x would be left in the radical with 6.
Part 2: It's rational because 2√4 is simply just 2 x 2 because √4 is a perfect square. 4+7=11. 11 can be converted into a fraction, so it wouldn't be irrational.
Level 4
Part 1: 13√750x*5 y*8 would be simplified to 65x^2y^4√30x. Find two factors that equal 750, which are 25 and 30. You know the drill, 25 is reduced to 5 and 30 stays as a radical. Multiply 13 and 5 to get 65. Factor out x^4 out of x^5 to get x^2. x^8 is a perfect square that can be reduced to x^4.
Part 2: Two unique expressions are 4√16+3 and 5√8 x 34. √16 is a perfect square, so it can become 4. 4 x 4 is 16 and 16 + 3 = 19. 19 is a rational number. 5√8 is irrational, so right off the bat, you'll know it's an irrational expression.
Subtract-2x2 - 4x from 2x2 – 2x - 5.
A plumber charges a one-time service fee of $20 in addition to his hourly rate of $25 per hour. If the plumber went to your house to work on your bathtub and toilet and the bill came to $282.50, how many hours did it take him to complete the job?
A- 25 + 20x = 282.50; x = 10.5 hours
B- 20 + 25x = 282.50; x = 10.5 hours
C- 20 + 25x = 282.50; x = 12.1 hours
D- 45x = 282.50; x = 6.3 hours
Answer: B
Step-by-step explanation:
The number of hours it took him to complete the job is; Choice B: 20 + 25x = 282.50; x = 10.5 hours
According to the question;
The one-time service fee of the plumber is; $20
The plumber's hourly rate is; $25 per hour.
The total bill after working on toilet and bathroom came to; $282.50
The expression which represents the plumber's charge is therefore;
20 + 25x = 282.50where, x = number of hours to complete the job.
Therefore, to find x;
25x = 282.50 - 2025x = 262.50x = 262.50/25x = 10.5 hours.
The total number of hours it took him to complete the job is; 10.5 hours.
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Identify the axis of symmetry and vertex.
Answer:
he axis of symmetry always passes through the vertex of the parabola . The x -coordinate of the vertex is the equation of the axis of symmetry of the parabola. For a quadratic function in standard form, y=ax2+bx+c , the axis of symmetry is a vertical line x=−b2a .
Step-by-step explanation:
two geometric figures that are proportional in size are ____ figures
Jordan has traveled 255 miles out of 340 miles on a trip. What percent of the total distance has he traveled?
A. 73%
B. 82%
C.75%
D. 70%
Answer:
Step-by-step explanation:
jordan traveled 255 miles out of 340 miles
340 miles.........................100 %
255 miles.......................... ?
255*100=2500/340=73%
See attachment for math work and answer.
Plz I need help on #12
Answer:
C its C
Step-by-step explanation:
Answer:
The answer is the fourth one
SOMEONE HELP!!!! ASAP
I’ll give brainliest!! Please and ty !
Last answe choice is 37 !!
Answer:
65
Step-by-step explanation:
Simplify (4i) (5i) - The “i” is the imaginary number for negative 1
Answer:
-20
Step-by-step explanation:
The simplified form of the given complex number (4i)(5i) is -20.
To simplify the expression (4i)(5i), we can use the properties of complex numbers.
The imaginary unit i is defined as the square root of -1. So, i² = -1.
Now let's simplify the given expression:
(4i)(5i) = 20i²the simplified form of (4i)(5i) is -20.
Since i² equals -1, we can substitute -1 for i²:
20i² = 20(-1)
Multiplying -1 by 20, we get:
20(-1) = -20
Therefore, the simplified form of (4i)(5i) is -20.
Learn more about the complex numbers here:
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Figure B is a scaled copy of Figure A. What is the scale factor from Figure A to Figure B.
Answer:
The scale factor is 1/2
Step-by-step explanation:
I have a different one but it was supposed to be 1/4
Write 1 390 000 in standard form.
In which number is the value of the digit two ten times the value of the digit 2 in 14,429
Answer:
In 14,429 the value of 2 is 20 because it's in the tens place. 10 * 20 = 200. 200 is your answer.
PLEASE HELP ASAP!
A cheese wheel has a circumference of 18π in and an area of 81π in2. A sector of the wheel with an arc length of 3π in is removed. What is the area of this sector?
a) 6π in2
b) 486 in2
c) 13.5π in2
d) π6 in2
Answer:
13.5π in2
Step-by-step explanation:
just took the quick check
Brenda took her dog to the veterinarian for an exam. The doctor told Brenda her dog needed to lose weight. Her dog weighed 55 pounds during this visit. The doctor suggested that her dog 45 pounds by their next visit. What is this weight decrease represented as a percent?
Answer:
18%Step-by-step explanation:
Step one;
given
initial weight = 55 pounds
final weight= 45 pounds
Step two:
Required
the % weight decrease
% decrease= initial-final/initial *100
% decrease= 55-45/55 *100
% decrease= 10/55 *100
% decrease= 0.18 *100
% decrease= 18%
Rosemary wants to buy a gift for her little brother this month, after she pays her bills. Should she buy a baseball glove for $22.95 or a T-shirt for $13.95? Use mathematics to justify your choice.
Answer:
T-shirt
Step-by-step explanation:
T-shirt because she has to pay bills.
Hope this helps plz hit the crown ;D
h ( t) = -10 + 6 h ( ) = -44
Answer:
-44
Step-by-step explanation:
Baylee received a 36% on her puppy test. How many tricks did she get right if there were a total of 25 questions?
Solve for x to the nearest tenth
Answer: are there choices?
Step-by-step explanation:
Step-by-step explanation:
sin 56 = 11/x
☓ = 11/ 5 Sin 56
= 13.3
Anyone know how to do identify the features?
A ratio that compares two quantities measured in different units is known as a ______________________.
Answer:
a rate
Step-by-step explanation:
A rate is a ratio that compares two different quantities that have different units of measure. A rate is a comparison that provides information such as dollars per hour, feet per second, miles per hour, and dollars per quart, for example. The word “per” usually indicates you are dealing with a rate.
CAN SOMEONE PLEASE HELP ME ASAP
Answer:
G
Step-by-step explanation:
difference between coordinates of A and C is 9 because 7-(-2) is 9, one-third of nine is 3, -2+3=1 G is 1. (sorry for poor phrasing)
Please help me thanks please
Answer:
Missing side is 15 in
area 150 in^2
Step-by-step explanation:
x = √ (25^2 - 20^2)
x = √ 625 - 400
x = √ 225
x = 15
area = bh/2
area = (20 * 15) /2
area = 300 / 2
area = 150
I think it's 500 but maybe Im wrong bc I keep editing my answer
complete each number sentence by choosing >, <, or =
14 - (5 +3) , (14 -5) + 3
(1 + 6) + 9 , 1 + (6 +9)
17 - (8+4) , 17 - 8 + 4
Answer:
14 - (5 +3) < (14 -5) + 3 <
14 - 8 9+3
(1 + 6) + 9 = 1 + (6 +9) =
17 - (8+4) < 17 - 8 + 4 <
-5 12
Step-by-step explanation:
What is the diameter of 8 inches
Answer:
25.12 OR 16
Step-by-step explanation:
We can see that the diameter of the circle is 8 inches. Let's put this number into the formula. The circumference of a circle that has a diameter of 8 inches is 25.12 inches
2 times 8 = 16
Mariah is studying the life cycle of the monarch butterfly. She must choose one stage in the cycle to present in science class: egg, caterpillar, chrysalis, or adult. She plans to make her choice randomly using a custom spinner divided into four sections. First, however, she spins the spinner 50 times to see the frequencies it generates.
Stage Times Landed On
egg 10
caterpillar 12
chrysalis 15
adult 13
The relative frequency of landing on egg is
.
The relative frequency of landing on caterpillar is
.
The relative frequency of landing on chrysalis is
.
The relative frequency of landing on adult is
.
All the outcomes
be considered equally likely.
Answer:
0.20, 0.24, 0.30, 0.26
Step-by-step explanation:
Hope this helps <3
Answer:
I’m pretty sure that it goes 0.2, 0.24, 0.3, 0.26, and it can be considered equally likely.
Step-by-step explanation:
Sophie's town voted on a new speed limit. Out of 75 votes, 15 were in favor of the new speed limit. What percentage of the votes were in favor of the new speed limit?
Answer:
20%
Step-by-step explanation:
Divide 15 by 75 to find the percentage.
Select the correct answer.
Over which interval of the domain is function m negative?
Answer:
The interval of the domain over which the function m is negative
will be: (6, ∞)
Step-by-step explanation:
We have to determine the interval of the domain over which the function m is negative.
The x-intercept of the graph is:
at y = 0, x = 6
(0, 6) is the x-intercept.
From the graph, it is clear that at the x-intercept x=6, the graph tends to continue downward towards infinity i.e. (6, ∞) where the graph would be negative as it is heading downwards.
Thus, the interval of the domain over which the function m is negative will be: (6, ∞)
Answer: (6,00)
Step-by-step explanation:
marking brainliest to whoever can help me
State if each triangle is a right triangle: *
13 in
2 in
12 in
Answer:
It would be a obtuse triangle instead
Step-by-step explanation:
By using pythagorean and theorem (a^2 + b^2 = c^2)
So it would be 13^2___2^2 + 12^2
When you square them, you get 169___4 + 144
144 + 4 = 148, which is less than 169
SO it would be 169>148
So no, not a right triangle
PLEASE HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!
Solve -2t + 5 ≥ -7.
t ≤ 6
t ≤ -6
t ≥ 6
t ≥ -6
The value of t will be t ≥ 6 or t ∈ [ 6 , α ) .
Given,
-2t + 5 ≥ -7
Now,
Solving the inequality,
-2t + 5 ≥ -7
Take 5 from LHS of inequality to RHS of inequality .
-2t ≥ -12
The negative signs from both sides are eliminated .
2t ≥ 12
t≥ 12/2
t≥ 6 .
Thus the value of inequality will be t ≥ 6 .
Thus option C will be correct .
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