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4 years ago

Steps to solving the problem 7.14 ×10^10+3.21×10^10

Mathematics

1 answer:

Anna11 [10]4 years ago

6 0

7.14 cross 10^2 is 714
same way for second one
714+321=...

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-3x8 5.0 -2 x 5 9. 16 x -15 13.3 -14 x 2

Nutka1998 [239]

-3×8= -24

-2×5= -10

16× -15= -240

-14×2= -28

Hope this helps!

4 0

3 years ago

More than three-quarters of the nation’s colleges and universities now offer online classes, and about 23% of college graduates

RUDIKE [14]

Answer:

0.1997 or 19.97%

Step-by-step explanation:

Have taken course online (H) = 23%

Have NOT taken course online (N) = 77%

Have taken course online and don't believe they provide same value (H&D) = 61%

Have NOT taken course online and don't believe they provide same value (N&D) = 73%

The probability that a student has taken a course online given that she does not believe that online courses provide the same educational value as one taken in person is;

$P(H|D)=\frac{P(H)*P(H\&D)}{P(H)*P(H\&D)+P(N)*P(N\&D)}\\P(H|D)=\frac{0.23*0.61}{0.23*0.61+0.77*0.73}\\P(H|D)=0.1997$

There is a 0.1997 or 19.97% chance that she has taken an online course before.

3 0

4 years ago

Which of these strategies would eliminate a variable in the system of equations?

Svetach [21]

C) Multiply the top equation by 3, multiply the bottom equation by -2, then add the equations.

8 0

4 years ago

Read 2 more answers

Solve for the variable: -(3x)^2 + 3 = -6

Veronika [31]

Hey there! :)

-(3x)² + 3 = -6

Simplify.

-(9x²) + 3 = -6

Simplify.

-9x² + 3 = -6

Subtract 3 from both sides.

-9x² = -6 - 3

Simplify.

-9x² = -9

Divide -9 from both sides.

-9x² ÷ -9 = -9 ÷ -9

Simplify.

x² = 1

So, x = 1 OR x = -1

~Hope I helped!~

5 0

3 years ago

Read 2 more answers

Testing a conjecture

Nezavi [6.7K]

Answer:

the answer is 7

Step-by-step explanation:

3 0

3 years ago