If the temperature drops, then you must have subtract amount of drop from initial temperature.
$-12,3^o-6,8^o=-(12,3^o+6,8^o)=-19,1^o$

The correct answer is the first one.

8 0

3 years ago

~khan academy 7th grade

pickupchik [31]

Question:

Which of the following expressions represents the distance between 1.7 and −1/2 on a number line?

Choose 1 answer:

$A.\ |1.7 - 1/2|$

$B.\ |1.7 -(-1/2)|$

C. None of the above

Answer:

$B.\ |1.7 -(-1/2)|$

Step-by-step explanation:

Given

Numbers: 1.7 and -1/2

Required

Determine the distance

To calculate the distance, we start by calculating the difference between the given numbers;

$Difference = 1.7 - (-1/2)$

Then, we calculate the distance;

<em>In this case, the distance is meant to be positive; So, we'll introduce the symbol for absolute value;</em>

Hence,

$Distance = |Difference|$

Substitute $1.7 - (-1/2)$ for Difference;

$Distance = |1.7 - (-1/2)|$

<em>Hence, the correct option is B</em>

4 0

3 years ago

Read 2 more answers

Please help thank you

Gemiola [76]

Question 1:

This is a 45-45-90 right triangle. If the leg length is $x$ , then the hypotenuse length will be $x \sqrt{2}$ .

The leg length of this 45-45-90 right triangle is 8. Multiply that with the square root of 2. You get $8 \sqrt{2}$ . Thus, the last choice is your answer.

Question 2:

This triangle can be identified as a 30-60-90 right triangle.
Let's say the smallest leg as a length of $x$ .
Then, the longer leg will have a length of $x \sqrt{3}$ .
Also, the hypotenuse will have a length of $2x$

This triangle follows this format, making it a 30-60-90 right triangle. Thus, the angles are 30, 60, and 90.

Hope this helps! :)

5 0

3 years ago