Iwill give brainliest! i need fast. this 30 question test is due tomorrow at 12: 00 pm and i need to get this done. cara has driven one-fifth of the total distance, d, to her destination. which statement explains why both 15d and 0.2d can find the distance she has driven? a. the fraction 15 is the same as the decimal 0.8. therefore, 15d can be written as 0.8d. b. multiplying by 15 is the same as multiplying by 2%. c. multiplying by 15 is the same as multiplying by 20%. d. the expressions are not equivalent.

Brainlest answer can you find the area and circumference of a circle given the radius or diameter? if its yes or no explain why

The rate of decay of a radioactive substance depends upon the amount present initially. the mass y (mg) of the radioactive substance cobalt-60 present in a sample at time t (years) is represented by the exponential equation y=50e −0.1315 t . answer the following questions in complete sentences. 1. how does the exponential equation above compare to the equation for simple interest that is compounded continuously? explain the similarities. 2. what is the initial amount of cobalt-60 in the sample? 2. how much cobalt-60 is left after 8.4 years? show your work. 3. what would be the y-intercept of the graph? what does it represent? 4. after how many years will the amount of cobalt-60 left be 6.25 mg? explain what happens to the cobalt-60 after 50 years? 5. discuss some “real-world” examples and uses of cobalt-60

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2