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trapecia [35]
3 years ago
9

The tempature is -3 degress.The temperature is expected to decrease 2.5 degress each hour until the temperature reaches -18 degr

ess. How many hours will it take to reach -18? A 6hours
B 7 hours
C 7.2 hours
D 8.4 hours
Mathematics
1 answer:
Andrews [41]3 years ago
6 0

We can set this problem up as an algebraic equation, which we can then solve to find our answer.


We start at -3. So we can start our equation with that:

-3


However, this doesn't represent any change in temperature, just that we start at -3. To show change, we will use the variable x, where x stands for the number of hours. Each hour accounts for a change of -2.5 in degrees, meaning that we must multiply our x by -2.5. We can now add this term into our equation:

-3 - 2.5x


We are trying to find when we will reach -18 degrees, so we will set our entire equation equal to -18 and solve:

-3 - 2.5x = -18

-2.5x = -15

x = 6


It will take us 6 hours, or choice A.

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The angles shown are supplementary. What is the value of x ?
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Can someone help me with this please
DIA [1.3K]

Answer:

See below

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3 years ago
plss can someone answer this really need help correct answer only plsss dont answer this for just a points i can brainly the cor
mylen [45]

The first solution involves the volume of a pyramid. With the parameters, the volume is given as: 51cm³

<h3>What is the Volume of a Pyramid?</h3>

The volume of a pyramid is given as:

V = (lwh)/3

Where:

  • L = base length
  • w = base width
  • h = pyramid height.

Hence, the volume of the pyramid is given as:

(6 x 5.2 x 4.9)/3

= 152.88/3

= 50.96

≈ 51 cm³

<h3>


What is the volume of the juice container?
</h3>

Assuming that it is a cuboid, the volume for the shape of a cuboid is given as:
L x B x H

Where:

L = Length = 2cm

B  (Width) = 34cm

H = Height = 12.2

Hence the Volume =

2 x 34 x 12.2

= 829.6

≈ 830 cm³

<h3>
What is the volume of the pit?</h3>

We are not given it's geometric description so we assume that it is a Cuboid.

Recall that the Volume of a Cuboid = L x B x H

Hence the Volume of the pit is:

7 x 5 x 8

<h3>= 280 cm³


How much space can a box that measures 50cm on each edge hold?

</h3>

From the question, we can infer that we are dealing with a Cube.

The volume of a cube is given as L³.

Recall that L = 50cm

Hence, the volume is = 50³
= 125,000‬ cm³

<h3>What is the volume of a rectangular prism?

</h3>

The formula for the volume of a rectangular prism is:

L x W x H; where

L (Length) = 130cm

W (Width) = 70cm

H (Height) = 110cm

→ 130 x 70 x 110

= 1,001,000 cm³


Learn more about volume at:
brainly.com/question/1972490
#SPJ1

7 0
2 years ago
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