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4 years ago

YO PLS HELP ASAP !!! MARKIN BRAINIEST !!! btw da drop down answers are da same as whats shown

Mathematics

1 answer:

ale4655 [162]4 years ago

8 0

Answer:

1. Is

2. Is

3. Is not

4. Is not

lol give me brainliest please!

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How many 4-digit passcodes are possible if no digits are repeated? Consider digits 0-9.

ehidna [41]

So you would set this problem up as 10 x 9 x 8 x 7, since none of the digits can be repeated. There are 5,040 4 digit passcodes possible.

6 0

3 years ago

How many ounces of a 15% alcohol solution must be mixed with 8 ounces of a 20% alcohol solution to make a 17% alcohol solution?

Tasya [4]

Step-by-step explanation:

x = ounces of 20% solution

15% = 0.15

20% = 0.2

17% = 0.17

x × 0.15 + 8×0.2 = (8 + x)×0.17

x×0.15 + 8×0.2 = 8×0.17 + x×0.17

8×0.2 = 8×0.17 + x×0.02

8×0.03 = x×0.02

x = 8×0.03/0.02 = 12 ounces

we need to mix the 8 ounces of 20% with 12 ounces of 15% to get 17% alcohol (8 + 12 = 20 ounces of it).

7 0

2 years ago

Curtis is packing to move. He finds 23 photo albums in the attic and 45 albums in a closet. If he divides them equally among 4 b

zimovet [89]

You have to add 23 and 45 will get 68 then divide 68 by 4 and that is your answer

7 0

3 years ago

Hey can you please help me posted picture of question

Dmitry_Shevchenko [17]

Answer:
The solutions are:
$\frac{3 + i}{2}$ and $\frac{3 - i}{2}$

Explanation:
The general form of the quadratic equation is:
ax² + bx + c = 0
The given equation is:
2x² - 6x + 5 = 0

By comparison:
a = 2
b = -6
c = 5

Now, to get the solutions of the equation, we will have to use the quadratic formula shown in the attached image.

By substituting in the formula, we would find that:
either x = $\frac{6 + \sqrt{(-6)^2 - 4(2)(5)} }{2(2)} = \frac{3 + i}{2}$

or x = $\frac{6 - \sqrt{(-6)^2 - 4(2)(5)} }{2(2)} = \frac{3 - i}{2}$

Hope this helps :)

4 0

3 years ago

Find the value of x.

serg [7]

Answer:

x = 25

Step-by-step explanation:

The Exterior Angle Theorem states that the exterior angle of a triangle is equal to the sum of the two opposite interior angles.

This means that

3x - 10 = 25 + (x+15)

3x - 10 = x + 40

Subtract x from both sides of the equation.

2x - 10 = 40

Add 10 to both sides.

2x = 50

Divide both sides by 2.

x = 25

4 0

4 years ago

YO PLS HELP ASAP !!! MARKIN BRAINIEST !!! btw da drop down answers are da same as whats shown​

YO PLS HELP ASAP !!! MARKIN BRAINIEST !!! btw da drop down answers are da same as whats shown