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algol13
3 years ago
15

A locker combination has three nonzero digits, and digits cannot be repeated. If the first digit is odd, what is the probability

that the second digit is even?
Mathematics
1 answer:
Deffense [45]3 years ago
8 0

Answer:

75 percent probability

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What is 40+15e+10e= ??????????????????
Svetllana [295]
I'm pretty sure the answer is 65, if there is no value given for the "e" then it's most likely going to equal 1, and if it doesn't give any value then it equals 1 and the answer is 65e :)
7 0
4 years ago
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The length of a particular rectangle is 2 inches less than twice its width. If the area of the rectangle is 40 square
lianna [129]

ANSWER:

Let width be x, then length be 2x – 2

Now, Area of rectangle = L × B

  • x(2x – 2) = 40
  • 2x² – 2x – 40 = 0
  • 2(x² – x – 20) = 0
  • x² – x – 20
  • x² –5x + 4x – 20 = 0
  • x(x – 5) + 4(x – 5) = 0
  • (x + 4)(x – 5) = 0
  • x = – 4; 5

Hence, width can't be negative.

So width = 5in.

And Length = 2 × 5 – 2

  • 10 – 2 = 8in.

So, <u>Correct choice</u> - [D] Length is 8 in, Width is 5 in.

3 0
3 years ago
What is the equation of the circle?
MakcuM [25]

Answer:

○ \displaystyle (x - 4)^2 + (y + 2)^2 = 25

Explanation:

Accourding to one of the circle equations, \displaystyle (x - h)^2 + (y - k)^2 = r^2,the centre of the circle is represented by \displaystyle (h, k).Moreover, all negative symbols give you the OPPOCITE TERMS OF WHAT THEY <em>REALLY</em> ARE, so you must pay cloce attention to which term gets which symbol. Another thing you need to know is that the radius will ALWAYS be squared, so no matter how your equation comes about, make sure that the radius is squared. Now, in case you did not know how to define the radius, you can choose between either method:

Pythagorean Theorem

\displaystyle a^2 + b^2 = c^2 \\ \\ 4^2 + 3^2 = r^2 \hookrightarrow 16 + 9 = r^2 \hookrightarrow \sqrt{25} = \sqrt{r^2} \\ \\ \boxed{5 = r}

Sinse we are dealing with <em>length</em>, we only desire the NON-NEGATIVE root.

Distanse Equation

\displaystyle \sqrt{[-x_1 + x_2]^2 + [-y_1 + y_2]^2} = d \\ \\ \sqrt{[-7 + 4]^2 + [-2 - 2]^2} = r \hookrightarrow \sqrt{[-3]^2 + [-4]^2} = r \hookrightarrow \sqrt{9 + 16} = r; \sqrt{25} = r \\ \\ \boxed{5 = r}

Sinse we are dealing with <em>distanse</em>, we only desire the NON-NEGATIVE root.

I am joyous to assist you at any time.

6 0
2 years ago
.
adell [148]

Answer:

x + y = 1042

1.5x + 0.75y = 1140

Step-by-step explanation:

This question can be solved by a system of equations.

I am going to say that:

x is the number of regular fares paid.

y is the number of reduced fares paid.

1,042 total fares were paid

This means that x + y = 1042

A city bus collected $1,140 in fares on a given day. The regular fare is $1.50, and the reduced fare is $0.75.

This means that:

1.5x + 0.75y = 1140

System of equations:

The system of equations is:

x + y = 1042

1.5x + 0.75y = 1140

4 0
3 years ago
Write -15.175 as a mixed number
Ksju [112]
-15 7/40

Convert a mixed number by placing the numbers to the right of the decimal over
1000.
7 0
3 years ago
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