Ron’s class donated d dollars to a local charity. danny’s class donated 21% more than ron’s class. which expression shows the amount danny’s class donated in terms of the amount donated by ron’s class? a. 1.21d b. 0.79d c. d + 0.79d d. d + 0.21
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Total amount donted by Danny class is 1.21d .

Option (a) is correct .

Step-by-step explanation:

As given

Ron’s class donated d dollars to a local charity.

Danny’s class donated 21% more than Ron’s class.

21% is written in the decimal form .

= 0.21

Danny class donted more than Ron class = 0.21 × Ron class donated

                                                                    = 0.21d

Total amount Danny class donated = Ron class donated +  Danny class donted more than Ron class

                                                          = d + 0.21d

                                                         = 1.21d

Therefore total amount donted by Danny class is 1.21d .

Option (a) is correct .

ok

step-by-step explanation:

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.