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Iris

Questions and answers by Iris

Questions (87)

If |x| = 11, |y| = 23, and |x-y| = 30, find |x+y|.Textbook answer: 20
1. 6 answers
2. 2,540 views
An empty beaker weighs 20g and when filled with a liquid weighs 65g. The volume of the liquid is found to be 25cm³. Determine
1. 5 answers
2. 1,126 views
How do we write numbers in standard notation?
1. 2 answers
2. 569 views
(-8 -3 1/3) 1/3 2Can you show me the step by step on this problem? thank you,
1. 1 answer
2. 352 views
3) Distinguish between a term of an expression and a factor of an expression. Distinguish between an expression and an equation.
1. 2 answers
2. 510 views
THE POWER OF A POWER RULE:__-5Y^4(Y^5)^2__ 15Y^7(Y^2)^3
1. 1 answer
2. 366 views
(4/3)^-2
1. 1 answer
2. 421 views
Hope Mom baked a cake in rectangular shape 10 by 6. If she starts at the corner and put acndle every 2 inches how many candles
1. 1 answer
2. 493 views
Hope Mom baked a cake in rectangular shape 10 by 6. If she starts at the corner and put acndle every 2 inches how many candles
1. 4 answers
2. 441 views
The number of accidents that occur at the intersection of Pine and Linden streets between 3 p.p and 6 p.m. on Friday afternoons
1. 1 answer
2. 420 views
Battery Power Problem. A certain type of thermal batteryfor an airplane navigation device backup power has a mean life of 300
1. 3 answers
2. 478 views
PLEASE HELP! What amount of water could be heated from 20 degrees C to 50 degrees C by 714 kJ of energy?
1. 2 answers
2. 476 views
A 26 inch ribbon is cut into three pieces. One piece is 12 inches. The remaining two pieces must have one piece two inches
1. 4 answers
2. 929 views
Marley and Hassan rounded the number 7.483. Marleys answer was greater than 7.438. Marleys answer was greater than 7.483, and
1. 3 answers
2. 823 views
*Explain the meetings that resulted in the Japanese seeing “Rolls-Royce, Rolls-Royce, Ford,” and how was this part of
1. 3 answers
2. 368 views
*Explain the meetings that resulted in the Japanese seeing “Rolls-Royce, Rolls-Royce, Ford,” and how was this part of
1. 1 answer
2. 413 views
calculate the volumes of 0.10 M acetic acid and 0.20 M sodium acetate that are needed to prepare48-mL buffer solution with pH =
1. 1 answer
2. 501 views
In a Scandal in Bohemia Dr. Watson says that Holmes A)has a Bohemian soul B)has the powers of a warlock C)sees but does not
1. 3 answers
2. 984 views
convert 33 miles/hour to meters/minute
1. 1 answer
2. 621 views
Hey how would you factor this polynomial to find the zeroes of this function?x^4-5x^3+7x^2+3x-10
1. 3 answers
2. 413 views
In chickens, the Leghorn variety has white feathers due to an autosomal dominant allele. Silkies have white feathers due to
1. 2 answers
2. 913 views
How do I complete an ICE table for a solution of nitrous acid, HNO2, one of the acids associated with acid deposition?
1. 3 answers
2. 1,329 views
In addition to alkanes, cracking reactions may also involve alkenes, alkynes and aromatics. For each of the following reactions,
1. 3 answers
2. 664 views
A marathon runner runs 3km in direction 0degree and them 4km in direction 90degree. total time for the race is 2 hours.so
1. 1 answer
2. 409 views
A sound of constant frequency is produced by the si-ren on top of a firehouse. Compared to the frequen-cy produced by the siren,
1. 3 answers
2. 2,834 views
I'm a number grater than 45 but less than 90. I am an even number. i have 7 sets of the 16 ones. what number am I?
1. 1 answer
2. 305 views
A projectile is shot at a speed of 30m/s at an angle of 50 degrees above the horizontal. The projectile hits a vertical wall at
1. 1 answer
2. 378 views
A man holds a flower pot out a window 12m from the ground. He tosses the pot upward with a speed of 5m/s. How long does it take
1. 1 answer
2. 467 views
Need some help?How is the model of King Tut like other models used by scientists?
1. 6 answers
2. 535 views
Do all art paintings have culture in the paintings
1. 3 answers
2. 557 views
An 83-kg fireman slides down a fire pole. He holds the pole, which exerts 500-N steady resistive force on the fireman. At the
1. 2 answers
2. 1,198 views
how can models help in science, why they are important, what and some examples of models.
1. 1 answer
2. 486 views
How can you evaluate scientific claims?NEED HELP!
1. 3 answers
2. 362 views
Which number is equivalent to 14/4?A 3.2 , because 14 divided by 4 is 3 with a remainder of 2 B 3.5 because 14 divided by 4 is 3
1. 4 answers
2. 465 views
The social unit most responsible for teaching the custom and traditions of a culture is?(A) The family (B) The government (C)
1. 14 answers
2. 1,082 views
You read 50 pages in an hour. Your sister reads 40 pages in an hour. Explain how to find out how many more pages you read than
1. 7 answers
2. 540 views
You are given the value of tan Θ. is it possible to find the value of sec Θ without finding the measure of Θ? Explain.
1. 3 answers
2. 1,037 views
Use a graphing utility to graph the function y = d + a sin (bx - c) for different values of a, b, c, and d. Write a paragraph
1. 3 answers
2. 1,365 views
Which of the following statements best describes the domain of the functions sine and arcsin?A)Sine domain is all real numbers;
1. 2 answers
2. 643 views
Which of the following lists the start of the agricultural revolution according to absolute chronology?A. AD 500 B. after
1. 11 answers
2. 3,711 views
The Atakapans occupied the region from the Sabine river to theA. San Jacinto river B. Red river C. Colorado river D. Trinity
1. 19 answers
2. 3,819 views
The Caddo were an American Indian group in Texas that practiced agriculture and build permanent houses. What can be inferred
1. 70 answers
2. 3,854 views
This question has me stuck. Use the Pythagorean identity sin^2 Θ + cos^2 Θ = 1 to derive the other Pythagorean identities, 1 +
1. 2 answers
2. 1,069 views
A.Verify the identity.B.Determine if the identity is true for the given value of x. Explain. Sec(x) / tan(x) = tan(x) / [tan(x)
1. 3 answers
2. 517 views
A.Verify the identity.B.Determine if the identity is true for the given value of x. Explain. [cot(x) – 1] / [cot(x) + 1] = [1
1. 2 answers
2. 551 views
Given Sin(A) = ⅗ and Cos(B) = 8/17 in Quadrant I, find Sin(A+B).
1. 1 answer
2. 427 views
Given Tan(A) = 5 in Quadrant III and Sin(B) = ⅔ in Quadrant II, find Cos(A-B).
1. 2 answers
2. 539 views
Just confused. Given tan(A) = 2 and A is in Quadrant I, find sin(2A).A. 0 B. 1 C. 1/2 D. 4/5
1. 1 answer
2. 379 views
Given tan(A) = 2 and A is in Quadrant I, find cos(2A).A. 0 B. 1 C. 1/2 D. -3/5
1. 2 answers
2. 665 views
Given the vectors u = <−3, 7> and v = <5,1>, find 3u + 2v.
1. 3 answers
2. 1,717 views
What is the unit vector of v: <-6, -8>?
1. 2 answers
2. 462 views
Find the dot product of: <-1, 7> and <2, ¾>.
1. 2 answers
2. 491 views
Given: u <-1, 7> and v <4, -3> Find: (u • v)(u + v)
1. 1 answer
2. 293 views
Given: u <-1, 7> and v <4, -3> What is the measure of the angle between them?
1. 1 answer
2. 370 views
find the angle between u=7i+2j and v=-4j
1. 3 answers
2. 300 views
Which of the following would be the best first step when solving the following system using the substitution method?x - y = -4 ;
1. 2 answers
2. 955 views
Why did Santa Anna attack the Alamo?A. It had a supply of gold. B. It was an important strategic location. C. It was his
1. 4 answers
2. 1,138 views
given: ((x-2)^2/9)+((y-4^2/16)=1what is the major axis?
1. 1 answer
2. 365 views
Can you please give and example of a hyperbola and ellipse with the same vertices and center that I can graph?Then explain the
1. 1 answer
2. 463 views
Which is the best example of the use of parametric equations?A. Measuring weight on the moon. B. Finding the position of a
1. 3 answers
2. 697 views
Which are examples of the use of parametric equations?A. Position of a person on a ferris wheel. B. Position of a ball after
1. 3 answers
2. 798 views
Convert to rectangular: theta=2pi/3
1. 3 answers
2. 623 views
Convert to rectangular: theta=(2pi)/3A. y=-sqrt3 B. y=-sqrt3x C. x=sqrt3 D. x=-sqrt3y
1. 1 answer
2. 408 views
Convert to rectangular: 4=4sec thetaA. y=2 B. y=4 C. x=2 D. x=4
1. 1 answer
2. 333 views
How is close reading related to annotation? How are they similar?
1. 1 answer
2. 420 views
Use a graphing utility to graph the polar equation shown below.r = cos 5Θ + n cos Θ, 0 ≤ Θ ≤ π For the integers n = -5
1. 2 answers
2. 1,094 views
Can someone please explain how eccentricity can be used to classify conics.
1. 1 answer
2. 402 views
Find P + 1 ifPk = 7 + 13 + 19 + ...+[6(k - 1)+1] + (6k + 1) (the k+1 and k in front of the P are subscripts) A. 7 + 13 + 19 +
1. 1 answer
2. 306 views
Which of the following shows the correct first step to prove the following by mathematical induction?3 + 11 + 19 + 27 + … +
1. 2 answers
2. 906 views
Find P_(k+1) if P_(k)=2^(k-1)/k!(I used _ as a sign for a subscript) A. 2^(k+1)/(k+1)! B. 2^k/(k+1)! C. 2^(k+1)/k!+1 D. 2k/k!+1
1. 1 answer
2. 365 views
How does the expansion of (x + y)n and (x - y)n differ? If you can offer an example that would be very helpful.Thank you
1. 2 answers
2. 492 views
What is the correct notation for “The limit of x^2 - 1 as x approaches 3?Thank you
1. 1 answer
2. 353 views
Which of the following shows the correct notation for “The limit of x^2 - 1 as x approaches 3.A. lim x^2-1 x->3 B. lim3
1. 4 answers
2. 1,166 views
The cost of sending a package overnight is $14.40 for the first pound and $3.90 for each additionalpound or portion of a pound.
1. 2 answers
2. 767 views
An empty beaker weighs 20g and when filled with a liquid weighs 65g. The volume of the liquid is found to be 25cm³. Determine
1. 3 answers
2. 805 views
Two triangles of the same shape are alwaysA. similar B. equilateral C. congruent D. equal
1. 3 answers
2. 1,043 views
Each wheel on Harley's bike has a radius of 60 cm. How many revolutions does each bike make when Harley bikes 500 cm?A.
1. 4 answers
2. 1,140 views
An urn contains 7 pink and 8 black balls. Five balls are randomly drawn from the urn in succession, with replacement. What is
1. 3 answers
2. 1,497 views
PLEASE DON'T JUST SHOW ANSWER PLEASE SHOW HOW TO DO IT PLEASEMrs. Walters drove 360 miles on 25 gallons of gas. Mr. Walters
1. 9 answers
2. 1,033 views
What is the LCM of 4 and 10?What is the GCF of 8 and 12?
1. 1 answer
2. 423 views
Please help guys ❤1) What is the GCF of 32 and 56? A) 2 B) 4 C) 8 D) 14 2) The highest temperature ever recorded in Death
1. 11 answers
2. 1,464 views
How do you write 24% as a decimal?2.4 0.24*** 0.024 How do you write 135% as a decimal? 1.35*** 13.5 0.135 How do you write 4%
1. 26 answers
2. 7,617 views
NO ONE HAS ANSWERED1. How do microorganisms affect the quality of soil? by breaking down the remains of dead organisms*** by
1. 7 answers
2. 1,115 views
1. which proportion can be used to determine what number is 15% of 3015/30 = x/100 15/100 = x/30 15/100 = 30/x 30/100 = 15/x 2.
1. 19 answers
2. 4,707 views
Which proportion can be used to determine what number is 15% of 30?15/30 = x/100 15/100 = x/30*** 15/100 = 30/x 30/100 = 15/x
1. 36 answers
2. 9,973 views
Along the southern coast of Brazil the central plateau descends in high steep escarpments it towers over the waves and moves
1. 1 answer
2. 611 views
4/5 x 8/9 estimated
1. 1 answer
2. 170 views

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