**PLEASE HELP FAST**
What was the most important historical effect of the astrolabe?

A. It enabled sailors to find their latitude.
B. It may have originated in Africa.
C. It made possible long voyages beyond sight of land.
D. It spread from Africa or the Middle East to Europe.

what type of friction present when you wrench on a car? Which type of evidence BEST supports a claim that lunch detention harms students emotionally? Select one: Oa quote from a parent Onumbers detailing how many students attended lunch detention last month O a map of the school showing traffio patterns in the building during lunch Oa student's personal story "Indicate in each whether the following electron configurations correspond to an atom in its ground state, excited state, or is impossible."a. [tex]{1s}^{2} {2s}^{2} {2p}^{4} [/tex]b. [tex] {1s}^{2} {2s}^{2} {2p}^{3} {2d}^{1} [/tex]c. [tex] {1s}^{2} {2s}^{2} {2p}^{3}{3s}^{1} [/tex]d. [tex] {1s}^{2} {2s}^{1} {2p}^{2} [/tex]e. [tex] {1s}^{2} {2s}^{2} {2p}^{1} [/tex]f. [tex] {1s}^{2} {2s}^{3} [/tex]Please, I really need help. I don't know what to do... 15PTS PLEASE HELP ASAP!(dont write random answers pls)look at the pic attached: Sara makes and sells bracelets. She bought material for $28.50 and used it all to make 15 bracelets. Sara used the equation 15 x minus 28.50 = 99 to determine x, the amount she should charge for each bracelet to make a profit of $99. How much should each bracelet cost? $4.70 $6.60 $8.50 $13.75 What can Lena do to avoid the risk of having short supplies in times of need?Lena works in an artificial jewelry-manufacturing unit. It is a family run business and they have been depending on a single supplier for years. As Lena is a proactive person, she can avoid the risk of being in short supplies of raw material by keeping a (blank) supplier for every one main supplier. The area of the parallelogram below is ____ square meters.Numerical Answers Expected the table above shows the number of miles four different cars traveled and the amount of gasoline each car consumed. which car has the best mileage? PLEASE HELP How do you find the run between two points? Can the rise be negative? Explain The condition of ketoacidosis is Select one: a. a potentially fatal buildup of acetoacetate or 3-hydroxybutyrate lowering blood pH. b. due to a lowered production of ketone bodies than is normal. c. the increase in pH of the cells due to ketone body production. d. only found when anaerobic catabolism of fat occurs. Question 1 / 1Which of the following is a covalent bond?A. CO2B. NaClC. Fe2O, if I have 130 of something and I need 200 how many more do I need What is the difference between the words "allusion" and "illusion"? a allusion= connect with prior knowledge illusion= magic trick that fools your eyes b The words are synonyms. c allusion= magic trick that fools your eyes illusion= connect with prior knowledge d They are different spellings, but they mean the same thing. which line from Defamation provides strong evidence that adults punish the child in the poem? To be a member of the choir, you must go to an audition. Henry's cousin is a member of the choir. What conjecture can you make about Henry's cousin?A.) Henrys cousin practices with the choir B.) Henrys cousin has a good singing voice C.) Henry is in the choirD.) Henrys cousin went to an audition Which system of equations has no solution?5 x + 5 y = 10 and 2 x + 2 y = 43 x minus 6 y = 4 and negative 4 x + 8 y = 76 x + 2 y = 6 and 7 x + 3 y = 93 x minus 4 y = 16 and 2 x + 3 y = 5Question #2Two linear equations are represented by using the tables below.A 2-column table with 4 rows is titled Equation A. Column 1 is labeled x with entries negative 5, negative 2, 0, 1. Column 2 is labeled y with entries negative 4, negative 1, 1, 2.A 2-column table with 4 rows is titled Equation B. Column 1 is labeled x with entries negative 6, negative 3, 3, 6. Column 2 is labeled y with entries negative 4, negative 2, 2, 4.The data points for equation A are plotted on the coordinate plane below and are connected by using a straight line.On a coordinate plane, a line goes through points (negative 5, negative 4), (negative 2, negative 1), (0, 1), (1, 2).What is the solution to the system of equations?(6, 4)(5, 4)(3, 2)(0, 1) Discuss what affects your food choices more: you own taste or what foodsare available you. Do you make good food choices? Explain. 60 students want lemonade and 16 students want iced tea. What is the ratio of the number of students who want iced tea to the number of students who want lemonade? hey I need help please. and thank you If you helped. What safety measures would you advise someone to follow during a natural disaster? Use the subjunctive mood in your response. Please type your response in Spanish. the maximum intensity levels of a trumpet, trombone, and a bass drum, each at a distance of 3m are 94 dB, 107dB, and 113dB respectively. What is the intensity level of the three different instruments when played simultaneously, again at 3m?