Devi mixes coffee powder that cause dollar 2.50 per KG with coffee powder that cause dollar 3.50 per KG given that she sells 20 kg of the mature at $2.80 per KG such that she does not make any prof better in car any laws find the mass of which type of coffee powder that uses for the mixture

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

(x+3)(x+7)

step-by-step explanation:

step-by-step explanation :

we know that

the measurement of the outer angle is the semi-difference of the arcs which comprises

in this problem

m< xzy is the outer angle

substitute the values

the measure of angle xoy is equal to

> by central angle

substitute the value

answer is 33

step-by-step explanation: