Answer:
21
first we begin from 1 to 100 we find 11 numbers contain 1 then we count 1s from 10 to 19 we get 9 numbers but there is an exciption in number 11 as it cotains 2 1s so thenumber of 1s is 21
410,000
Hope this helps ;)
Answer:
8y(7x^3-4x+2)
Step-by-step explanation:
Group and factor out the greastest common factor then combine
What two numbers add up to -1 and multiply to -72?
-9 and 8
Rewrite the expression above
<u>(x - 9)(x + 8)</u>
Answer:
Each cake cost £ 13.00
Step-by-step explanation:
We were given that, each cake costs
or £ 
Andy buys
cakes.
Andy's cost is
£
Betty buys 4 times as many cakes as Andy.
Betty's cost is
£
£
Colin buys 3 more cakes than Andy
Colin's cost is
£
The total cost of the cakes is £
.
This implies that,

We expand to get,

We group like terms to get,

This gives us,

This implies that,



Therefore each cake cost £ 13.00