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3 years ago

Please help with this, will mark brainliest!!! :D

Mathematics

2 answers:

7nadin3 [17]3 years ago

5 0

Answer:

the 3rd one

Step-by-step explanation:

bekas [8.4K]3 years ago

3 0

Answer: The moon was 20 farms away from earth so If I ate a couch then went to my treadmill outside of my cow, I could add the letter Grammar to my checklist.

Explanation: You see, If there was a man who had no arms or legs he would be walking with his feet right? SO If I added chickens to my head and ate the Eifel tower am I 50% a chocolate bar. Hope this helps

Pls mark brainliest :)

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3 years ago

Read 2 more answers

The temperature at a point (x, y) is T(x, y), measured in degrees Celsius. A bug crawls so that its position after t seconds is

iren [92.7K]

Answer:

The temperature is increasing at the rate of 6.5 degree celcius per second.

Step-by-step explanation:

We are given the following information:

Temperature of a point is given by T(x,y)

After t seconds a bug reaches a point $x = \sqrt{2 + t}, y = 3 + \frac{1}{2}t$

At t = 2, x = 2, y = 4

The temperature function satisfies:

$T_x(2,4) = 8\\T_y(2,4) = 9$

We have to find:

$\displaystyle\frac{dT}{dt} = T_t(x(t), y(t))\\\\= T_x(x(t),y(t)).x'(t) + T_y(x(t),y(t)).y'(t) \\\\= T_x(x(t),y(t)).\displaystyle\frac{1}{2\sqrt{(t+2)}} + T_y(x(t),y(t)).\displaystyle\frac{1}{2} \\\\\displaystyle\frac{dT(x,y)}{dt}_{at~t=2} = \displaystyle\frac{dT(2,4)}{dt}_{at~t=2} = 8.\displaystyle\frac{1}{4} + 9.\displaystyle\frac{1}{2} = 2 + 4.5 = 6.5$

Hence, the temperature is increasing at the rate of 6.5 degree celcius per second.

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4 years ago

A polyhedron has 6 vertices and 9 edges. How many faces does it have?

sladkih [1.3K]

From Euler equation
Vertices - Edges + Faces = 2
1. F = E - V + 2
F = 9 - 6 + 2 = 5
answer is B

2. V = E - F + 2
V = 36 - 25 + 2 = 13
Answer is c

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4 years ago

PLEASE FIX MY ANSWER... I WAS WRONG.

vichka [17]

Answer:

False m = -2 or 2.

Step-by-step explanation:

Yea I just solved it using the take the roots of each side method. So yea the answer is 2 but it's also -2.

3 0

3 years ago