In ashley's biology class, the students tested for bacteria on a kitchen sponge. they found that there were approximately 19,000,000 bacterial colonies on a single sponge. express their findings in scientific notation.

19 × 10^6
1.9 × 10^7
1.9 × 10^6
0.19 × 10^8

the barter

c. 27 units.

step-by-step explanation:

we are told that in circle a, ∠bae ≅ ∠dae.

we can see from our given diagram that in and ;

, as these are radii of our given circle.

therefore, by sas congruence postulate.

hence, side be will be equal to side de as corresponding parts of congruent triangles are congruent. so we can set an equation to find the value of x as:

now let us substitute x=17 in the expression for the length of be.

therefore, length of be will be 27 units and option c is the correct choice.

substitute,

circle 1 = 5

circle 2 = 20

circle 3 = 44

in this case no matter how you add, you will always get a perfect square..

hence proved

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