MATHEMATICS
MIDDLE SCHOOL

Answer:

Answer:

$47

Step-by-step explanation:

Andy's initial amount was $28.

The question is on subtraction. It is meant to understand your capacity on worded form of subtraction.

After Andy cashed the cheque, his amoussou rose from $28 to $75.

Therefore, to know the amount on the cheque we subtract the initial amount from the total amount.

$75 - $28 = $47

Answer: 75-28= 47 is your answer

HIGH SCHOOL

Which compound is an electrolyte?

(1) C6H12O6 (3) CaCl2

(2) CH3OH (4) CCl4

I think the correct answer is option 3. CaCl2 is the compound that is an electrolyte when dissolved in water. An electrolyte is a substance that conducts electricity in solution. Calcium Chloride when in solution dissociates into ions which allows the flow of current in the solution.

HIGH SCHOOL

The worlds two highest dams are both in Tajikistan. The rogun dam is 35 meters taller than the Nurek dam. Together they are 635 meters tall. Determine the height of the Nurek dam.

Answer:

Height of Nurek dam = 300 m

Explanation:

Let the height of Rogun dam be a p and height of Nurek dam be q.

The Rogun dam is 35 meters taller than the Nurek dam

p = q + 35

p - q = 35 ------------------------Equation 1

Together they are 635 meters tall

p + q = 635 ------------------------Equation 2

Equation 1 + Equation 2,

2 p = 635 + 35

p = 670/2 = 335 m

Substituting in equation 2

335 + q = 635

q = 300 m

Height of Nurek dam = 300 m

HIGH SCHOOL

Which is smaller -5 or -17

-17 because it's the furthest one away from the number 0 on a number line the further from 0 if the number is negative the smaller it becomes. Hope this helps: )

-5 because it is closest to zero and -17 is farther than zero on a number line :)

MIDDLE SCHOOL

Every night Nathan has to read at least 25 minutes. Write an inequality that shows how long Nathan can read each night

Answer:

T ≥ 25

Step-by-step explanation:

Inequality is a part of algebra that engage the greater than, less than greater than or equal to and the less than or equal to sign. Symbolically, these are

>,

Answer:

25