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sp2606 [1]
4 years ago
5

Please help in the question it should be if t=-6 when r =-2 its an error

Mathematics
1 answer:
Natasha2012 [34]4 years ago
7 0

Answer:

r = - \frac{12}{7}

Step-by-step explanation:

Given that r varies inversely as t , then the equation relating them is

r = \frac{k}{t} ← k is the constant of variation

To find k use the condition t = - 6 when r = - 2, then

- 2 = \frac{k}{-6} ( multiply both sides by - 6 )

12 = k, thus

r = \frac{12}{t} ← equation of variation

when t = - 7, then

r = \frac{12}{-7} = - \frac{12}{7}

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The curved surfaces area of a right circular cylinder is 264 sq. metres and its volume is 924 cu.metres. The diameter and height
Ivenika [448]
You forgot to include the diameter and height so I can’t answer it
6 0
3 years ago
At midnight, the temperature was 43.7°F. In the morning, the temperature was −3.6°F. Which statement describes the temperature?
wlad13 [49]

Answer:

At midnight, the temperature was 43.7 degrees above 0, and in the morning, it was 3.6 degrees below 0

Step-by-step explanation:

At midnight, the temperature was 43.7°F. In the morning, the temperature was −3.6°F.

We can say that −3.6 lie on the LHS of a number line while 43.7 lie on RHS of the number line and 0 at the mid.

43.7°F is above 0 and 3.6°F is below 0.

At midnight, the temperature was 43.7 degrees above 0, and in the morning, it was 3.6 degrees below 0 . Hence, the correct option is (d).

5 0
3 years ago
Read 2 more answers
(9-5) x 4 solution please​
Lyrx [107]

Answer:

16x

Step-by-step explanation:

(9-5)x*4

Subtract the numbers: 9 - 5 = 4

=4*4x

Multiply the numbers: 4*4=16

=16x

7 0
3 years ago
What is the longest flagpole (in whole feet) that could be shipped in a box that measures 1ft by 2 ft by 12 ft?
nexus9112 [7]
Consider a pole running from one corner to the farthest corner of a box. 
In 3D space the start of the pole would be at (0,0,0).
The endpoint would be at (12,2,1).
Use the distance formula:
D^2 = (x1-x2)^2 + (y1-y2)^2 + (z1-z2)^2
D^2 = (12-0)^2 + (2-0)^2 + (1-0)^2
D^2 = 144 + 4 + 1
D^2= 149
D = sqrt (149) 
D = (approx.) 12.21 ft
D = 12 ft

Have a nice day :D
5 0
3 years ago
Can u help me please?
never [62]

Answer:

1. x = -15

2. x = 0.25 or x = 1/4

Step-by-step explanation:

1.

8 + 9.8x + 9 = 3.8x - 16 + 3.8x

Simplify both sides

17 + 9.8x = 7.6x - 16

-17                      -17

9.8x = 7.6x - 33

-7.6x   -7.6x

2.2x = -33

Divide by 2.2

x = -15

2.

-2x - 10 = -14x - 7

+7                    +7

-2x - 3 = -14x

+2x         +2x

-3 = -12x

Divide by -12

0.25 = x

x = 0.25 or x = 1/4

6 0
3 years ago
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