Estimate. Then find the actual difference.0.2001 - 0.01275

A. Estimate: 0.19; Actual: 0.18835
B. Estimate: 0.09; Actual: 0.18735
C. Estimate: 0.19; Actual: 0.18735
D. Estimate: 0.09; Actual: 0.087


Answer: C

Mathematics

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Write the expression in standard form.4.241 × 10-6

A. 0.0000004241 B. -4,241,000 C. 0.00004241 D. 0.000004241

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The amount remaining A, in grams, of a radioactive substance is a function of time t measured in years.  The equation of change for A is

?
.
?
A: What can you conclude about the function ?B: If  there are initially 48 grams of the substance present, find a formula that gives A in terms of t. Write your answer using the alternative form for an exponential function.C: How long will it take before only of the original amount is left?

What will be an ideal response?

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Solve.An old house has a basement stairway that has steps with 7.25 inch risers and 7 inch treads. What is the slope of the stairway? Express your answer as a decimal and round to the nearest hundredth when necessary.

A. 10.36 B. 0.97 C. -0.25 D. 1.04

Mathematics

Construct a table that displays the number of directed paths of length 1 or 2 between each pair of vertices in the following graph. 

A.

B.

C.

D.

Mathematics