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Solve 3x + 10 = 10(2x-5)

Multiply out the right hand side so equation becomes 3x+10=20x-50Move x's to one side and numbers to other so 17x = 60x= 60/17
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Answered by Devin S. • Maths tutor
4058 Views

Express 126 as a product of its prime factors

(2) (63)-->(2) (3) (21)-->(2) (3) (3) (7)*(1)
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Answered by Taner C. • Maths tutor
6211 Views

5 tins of soup have a total weight of 1750 grams. 4 tins of soup and 3 packets of soup have a total weight of 1490 grams. Work out the total weight of 3 tins of soup and 2 packets of soup.

Step 1 - Find the weight of 1 tin of soup: 1750 ÷ 5 = 350 Step 2 - Use this number (350) to find the weight of 1 packet of soup: (4x350) + 3P = 1490, 3P = 90, P=30Step 3 - Work out weight of 4 tins of soup a...
MC
Answered by Maddy C. • Maths tutor
13274 Views

Solving quadratic equations using the factorisation method.

The Form of a quadratic equation where a ≠ 0ax 2 + bx + c = 0In order to solve we need to create one term made up of factors.One or more of these factors must equal zero. Questions we will work through: 10x ...
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Answered by Clem E. • Maths tutor
4389 Views

Solve (x/4)-(2x/x+2)=1. Give your solutions to 2 decimal places.

Re-arrange to x^2-10x-8=0Using quadratic formula obtains two values, x=10.74 and x= -0.74
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Answered by Will H. • Maths tutor
3399 Views