Algebra Find the values for x and y in parallelogram ABCD. AE= 2x, EC=y+4, DE=x, EB=2y-1. AC and BD intersect at point E

Enter numbers to write 13,000 in scientific notation. 13,000=1.3 × =1.3×10

TiliK225 [7]

Answer:

104 = 10,000 x 1.3 = 13,000

Step-by-step explanation:

step 1

To find a, take the number and move a decimal place to the right one position.

Original Number: 13,000

New Number: 1.3000

Step 2

Now, to find b, count how many places to the right of the decimal.

New Number: 1 . 3 0 0 0

Decimal Count: 1 2 3 4

There are 4 places to the right of the decimal place.

Step 3

Building upon what we know above, we can now reconstruct the number into scientific notation.

Remember, the notation is: a x 10b

a = 1.3 (Please notice any zeroes on the end have been removed)

b = 4

Now the whole thing:

1.3 x 104

Step 4

Check your work:

104 = 10,000 x 1.3 = 13,000

4 0

2 years ago

What is the value of the expression -38-16-(-23)? O-31 O-45 O-54 O-77

ohaa [14]

Answer:

-31

Step-by-step explanation:

$-38-16-(-23) \\ \\ =-38-16+23 \\ \\ =-54+23 \\ \\ =-31$

3 0

9 months ago

I have already covered one-third the distance from Podunk to Boondocks, and after I walk one more mile, I’ll be half way there.

saveliy_v [14]

Answer:

6 miles

Step-by-step explanation:

Let the distance of Boondocks from Podunk to be x

1/3 x +1 = 1/2x

1=1/2x-1/3x

1= 1/6 x

6*1=x

6 miles= x

7 0

3 years ago

A multiple-choice examination has 15 questions, each with five answers, only one of which is correct. Suppose that one of the st

Alex

Answer:

0.0111% probability that he answers at least 10 questions correctly

Step-by-step explanation:

For each question, there are only two outcomes. Either it is answered correctly, or it is not. The probability of a question being answered correctly is independent from other questions. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$