Algebra Answers

A jewellery store sells beads necklaces.Each necklace cost R40 for the wire and R15 per bead.There exists a linear relation between the cost if the necklace and the number of beads the necklace has.The cost,C is dependent on the number of beads,n. The graph that represents this relation correctle is?

b. Show on the real line and indicate in symbols each of the following:

S₁= {x: -7 < x < ∞ } ∩ {x: -∞ < x < 3}

S₂= (x:x ≥ ∞ } ∩ (x: x+ 3 < 6}

S3 = y: y²-2 y-3 < 0} U {y: -2 ≤ y ≤ 1}

Determine the production cost of 7 devices, if labour amounts to R4 140 ,computing

Components cost is R1035 and the savings on reusable material is R1725

Ayana has $2.35 in nickels and dimes. If she has 33 coins in all, find the number of nickels and dimes

The production cost, represent by y, of smart phone devices are equal to the product of computing components (a) and the square of the number of devices (x), added to the product of labour (b) and number of devices (x); after which savings on reusable material (c) are subtracted

Write down an equation to represent the production cost (y) in terms of a, x, b and c

In a country there are 48000 people in the defence services. They work in the army, navy and air force in the ratio 5:2:3 . how many people are in each service?

find the value of x,

x²+2x+1=0

A group of five boys and eight girls go to the fair. Admission cost nine dollars per person. Which expression does not show the total amount group will pay?

A construction crew is lengthening a road that originally measured 41

 miles. The crew is adding one mile to the road each day.

Let 

L

be the length (in miles) after D

days of construction. Write an equation relating 

L

to D

.Then use this equation to find the length of the road after 37

days

Draw Dienes blocks to show how to find solution to

78+54

102-45