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Aliun [14]
3 years ago
15

The difference of twice a number and 9

Mathematics
1 answer:
erik [133]3 years ago
6 0

Answer:

2(x-9)

Step-by-step explanation:

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The middle 83.12% of all Z values are between
Lerok [7]

Answer:so where is the question

Step-by-step explanation:plzz ask probably

3 0
3 years ago
The sum of five consecutive positive integers is 2020. Find the largets of these numbers.
Alona [7]

Answer:

406

Step-by-step explanation:

let the 5 consecutive positive integers be

n , n + 1 , n + 2 , n + 3 , n + 4 , then

n + n + 1 + n + 2 + n + 3 + n + 4 = 2020

5n + 10 = 2020 ( subtract 10 from both sides )

5n = 2010 ( divide both sides by 5 )

n = 402

then

largest integer = n + 4 = 402 + 4 = 406

4 0
2 years ago
F(x)=3x+5 over x , what is f(a+2)
Fed [463]

<u>Answer</u>

F(a+2) = (3a+11)/(a+2)


<u>Explanation</u>

F(x) = (3x + 5)/x


If you are to find F(a+2), you replace x with (a+2)


F(a+2) = (3(a+2)+5))/(a+2)

= (3a+6+5)/(a+2)

=(3a+11)/(a+2)

4 0
3 years ago
Find x in DEF<br><br>A. 6<br>B. 6 (square root 2)<br>C. 6 (square root 3)<br>D. 12​
netineya [11]

Answer:

B. 6√2

Step-by-step explanation:

We can use the Pythagorean Theorem to solve this out. The Pythagorean Theorem states that for any right triangle with the shortest sides (called legs) as a and b and the longest side (called the hypotenuse) as c:

a² + b² = c²

Here, a = b = 6, so:

6² + 6² = c²

36 + 36 = c²

72 = c²

c = √72 = 6√2

Now, we see the answer is B.

However, there's a trick to solving these kinds of problems. Notice that DEF is both an isosceles triangle and a right triangle. We call these 45-45-90 triangles because those are the angles of the triangle.

One characteristic of these types of triangles is that their leg to leg to hypotenuse ratio is 1 : 1 : √2, always. We could apply that here. We see that the legs are 6, so we could find the hypotenuse simply by multiplying 6 by √2, and we would get 6√2, which is exactly the value we obtained above.

Thus, the answer is B.

4 0
4 years ago
The sloped roof of a house that is right beside its property line can be represented by the inequality −|x − 2| + 9 &gt; 6. Solv
lesya692 [45]

Answer:

This Is CORRECT

Step-by-step explanation:

8 0
3 years ago
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