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2 years ago

We choose a 4-digit number randomly. What is the probability that all its digits are even? help asap

Mathematics

2 answers:

Vlad1618 [11]2 years ago

5 0

Answer:

It's very simple. In 4 decimal digits there are 10,000 (0000 to 9999) possible values. The odds of any one of them coming up randomly is one in 10,000. A specific "4 digit number" would have 1/9000 chance, since there are 9000 4 digit numbers (1000-9999).

Step-by-step explanation:

dolphi86 [110]2 years ago

3 0

There are 9,000 true 4 digit numbers and out of that 1000 numbers are divisible by 9.

The probability is given by Favourable Possibilities divided by Total Possibilities.

In the current case, the probability that the number is divisible by 9 is:

1000/9000
1000
/
9000

=1/9
=
1
/
9

The required answer is 1/9
1
/
9
.

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The sign of the product of 2 integers with the same sign is positive. what is the sign of the product of 3 integers with the sam

klemol [59]

Product of 3 negatives equals a negative answer
Product of 3 positives equals a positive answer

6 0

3 years ago

Hey guys! I’m having a lot of trouble with this paper, would anyone mind explaining one of them to me?

lyudmila [28]

Answer: See Explanation

Step-by-step explanation:

This worksheet seems to be about "Special Right Triangles"

In this worksheet, it instructs you to find the missing side lengths.

Explaining number 1)

Step 1) Identifying the triangle and what it means

Since the triangle in number one is a 45-45-90 triangle with the given side length of "1" on one of the legs of the triangle, it can be concluded that the other leg also has a side length of "1" (due to the ratio of side on a 45-45-90 degree triangle), is also states the triangle has 45 degrees labeled on one of the angles, is can also be concluded that the other missing angle is 45 degrees.

Step 2) Answer

The answer to b is 1 and the answer to a is square root of 2, due to the properties of a 45 45 90 triangle (refer attachment)

*you can also use the following attachment to help you on this problem

7 0

3 years ago

the sum of −2x2 + x + 31 and 3x2 + 7x − 8 can be written in the form ax2 + bx + c, where a, b, and c are constants. What is the

Kitty [74]

Answer:

$a+b+c=32$

Step-by-step explanation:

we have

$(-2x^{2} +x+31)+(3x^{2}+7x-8)$

Adds the terms

Group terms that contain the same variable

$(-2x^{2}+3x^{2})+(x+7x)+(31-8)$

Combine like terms

$(x^{2})+(8x)+(23)$

where

$a=1,b=8,c=23$

therefore

$a+b+c=1+8+23=32$

8 0

3 years ago

Identify the percent of change an increase or decrease then find percent of change one hundredfifty pounds to one hundred thirty

Alex777 [14]

Answer:

−10%change

10%decrease

Step-by-step explanation:

V2−V1)|V1|×100

=(135−150)|150|×100

=−15150×100

=−0.1×100

=−10%change

=10%decrease

Note: Percent Change is NOT the same as Percent Difference between 150 and 135.

Hope this helps!

6 0

3 years ago

ANSWER QUICK PLZ

musickatia [10]

A. 60(2/3) + 35(7/10) + 45(5/6) = $102.00

b. 60 + 35 + 45 = 140 = original price
140 - 102 = $30 saved

c. 102/140 = .7286 * 100 = 72.86 % (not sure how you need it rounded)

3 0

3 years ago

Read 2 more answers