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Scilla [17]
3 years ago
14

I don't know which one is it.

Mathematics
1 answer:
lorasvet [3.4K]3 years ago
7 0
The answer i think is A hope that help 
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Find the midpoint of the line segment given endpoints (9,-5)(8,2)
Karolina [17]

Answer:(4,5)

Step-by-step explanation:

5 0
3 years ago
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Suppose you are climbing a hill whose shape is given by the equation z = 1400 − 0.005x2 − 0.01y2, where x, y, and z are measured
Anarel [89]
Answer: You start to ascend

Explanation:

Since you are walking due south and the positive y-axis points north, the y-coordinate decreases.

Let 

y' = y-coordinate after walking due south
z' = z-coordinate (or the height) after walking due south

So, the point where you stand after walking due south has a coordinate of (100, y', z'). Moreover,

z' = 1,400 - 0.05(100)^2 - 0.01(y')^2
\\ \boxed{z' = 1350 - 0.01(y')^2}

Since the y-coordinate decreases after walking due south and z' = 1350 - 0.01(y')^2,

y'  \leq 120\\ \Rightarrow (y')^2 \leq 120^2 = 14,400\\ \Rightarrow -0.01(y')^2 \geq -0.01(14,400) = -144\\ \Rightarrow z' = 1,350 - 0.01(y')^2 \geq 1,350 - 0.01(14,400) = 1,206\\ \Rightarrow \boxed{z' \geq 1,206}

So, the height after walking due south exceeds 1,206 meters, which is the previous height before walking due south. Therefore, if you walk due south from point with coordinates (100, 120, 1206), you are ascending.
5 0
3 years ago
I need help please! i don’t understand this problem and it’s very confusing. hellllppp!!!
Elodia [21]
Check the picture below.

make sure your calculator is in Degree mode.

6 0
3 years ago
There are 20 female performers in a dance recitial. The ratio of men to women is 3;4 . How many men are in the dance recitial.
Triss [41]

Answer:

There are 15 men in the dance recital.

Step-by-step explanation:

If 20 people is 4 parts, then 5 people are 1 part. Due to that, 15 people will equal 3 parts.

8 0
3 years ago
25.7% as a fraction<br> plz help
vlada-n [284]

Answer:

257/1000

Step-by-step explanation:

⭐ Please consider brainliest! ⭐

✉️ If any further questions, inbox me! ✉️

4 0
3 years ago
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