Questions in Grade High-school

Questions in Grade High-school

[Homework Help] Ella and Nico had $250 altogether. If Nico spent $35, he would still have $5 more than Ella. How much money did Ella have?

[Homework Help] Naomi has 50 beads in total, consisting of red beads and white beads. The number of red beads is 1 more than 6 times the number of white beads. How many red beads does Naomi have?

[Homework Help] A community college has 2,000 students and 50 instructors. Next year, the enrollment will be 6,000. How many new instructors should be hired if the college wants to keep the same student-to-instructor ratio?

[Homework Help] What is true about the element francium (Fr, atomic number 87)? More than one can be true. A. It has seven valence electrons. B. It is likely to form ionic bonds. C. It is in Period 7. D. It is a nonmetal. E. It is a metal.

[Homework Help] A chemist mixes two liquids together, and the reaction produces a gas and a solid. According to the law of conservation of mass, what should the chemist observe when she compares the total masses of the substances before and after the reaction? A. The masses are equal. B. The masses are inconsistent. C. The mass of the substances before the reaction is greater than the mass of the substances after the reaction. D. The mass of the substances before the reaction is less than the mass of the substances after the reaction.

[Homework Help] Which of the following explains why the heart is organized so that it pumps blood to two different locations? a.to supply blood to two different sides of the body b.to allow a way for the blood to pick up new blood cells c.to move oxygen-poor blood through the lungs and to move oxygen-rich blood to the rest of the body d.to provide a way for blood to pick up nutrients at one location and oxygen at another

[Homework Help] I am greater than 4 tens and less than 5 tens. I have 9 ones. What number am I?

[Homework Help] Solve the following equation algebraically. Represent your answer in simplest radical form, if necessary. \[ x^2 + x = 30 \]

[Homework Help] Which set of terms below would be the best choice to use to describe the components of blood? 1. leukocytes, ventricle, atrium, aorta 2. platelets, plasma, erythrocytes, leukocytes 3. electrolytes, artery, vein, cardiac 4. antibodies, hemoglobin, pulmonary, systemic

[Homework Help] Lin rides her bike 20 miles in 15 minutes. If she rode at a constant speed, what is the unit rate and how do you know?