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A current of 3A flows for 50hr through a 6ohm resistor find the energy consumed by the resistor
How many ways are there to select 12 countries in the United Nations to serve on a council if 2 is selected from a block of 55, 2 are selected from a block of 67 and 8 are selected from the remaining 67 countries
A 10cm long cleaned Magnesium strip is heated in a crucible until get a fixed mass.if the weight of the crucible is 15.65g and the weight of magnesium strip with crucible is 16.13g,the mass of oxide in grams
Write the equilibrium constant expression for each of the following reactions.
1. H2(g) + I2(g) ⇌ 2HI(g)
2. 3O2(g) ⇌ 2O3(g)
3. 2CO2(g) ⇌ 2CO(g) + O2(g)
4. CH3COOH(aq) + C2H5OH ⇌ CH3COOC2H5(aq) + H2O(l)
5. AgCl(s) ⇌ Ag+ (aq) + Cl-(aq)
metal block has a mass of 50g and a volume of 10 cm what is the density of the block
find the class boundaries, midpoint, and width for the class 12.4-15.2
In modern mathematics teaching we want relational understanding, in addition to instrumental understanding. Describe how a teacher would teach for both instrumental and relational understanding of long division 357÷19.
Teaching long division of 357÷19 for instrumental understanding
Teaching long division of 357÷19 for relational understanding
A company makes products A and B. Each unit of product A requires 1 unit of resource 1 and 5 units
of resource 2. Each unit of product B requires 5 units of resource 1 and 4 units of resource 2. If there
are 40 units of resource 1 and 140 units of resource 2 available, how many units of each product should
be produced if all the resources are to be used?
Solve this system of equations and provide a graphical representation of the solution. (12)
x2 + y2 = 5
x + y = 1
3.1 Write a number sentence that will represent the structure of the following problem situations. 3.1.1 Nare had some marbles. After receiving 24 from his sister, he now has 52 marbles altogether. How many marbles did Nare have at the beginning? (2) 3.1.2 Gabriel and Miranda have R257 between them. Gabriel has R165. How much does Miranda have? (3.1.3 Shaheed bought 3 chickens for R94 each from a local supermarket. She also bought a bag of potatoes. Shaheed paid R282 in total. How much did the potatoes cost? (2) 3.1.4 Phumzile is 6 years younger than her brother, Piet. How old is Piet when Phumzile is 25 years old? (2) 3.1.5 The young ostrich, Lenka, has to take 3 steps to keep up with every step taken by her mother. How many steps must Lenka take when her mother takes 6 steps? (2) 3.1.6 Mashudu had R500 in his wallet. After buying some dinner for him and a friend, he now has R220. How much did Mashudu pay for the dinner? (2) 3.2 Name the problem type for each of the problem situations in 3.1.
#339914 on Dec 2023