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igor_vitrenko [27]
3 years ago
6

A bathtub contains 20 gallons of water. After the drain is opened, there are 14 gallons of water remaining after 30 seconds. Usi

ng this information, how can you describe the rate of change in the amount of water remaining in the tub per second?
Mathematics
1 answer:
Juliette [100K]3 years ago
8 0
6 gallons are lost every 30 second so .2 gallons are lost every second
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Find the missing side length
o-na [289]

is it Possibly 3 yards?

7 0
4 years ago
Evaluate the function f(x) = -7x + 2 at f(-18).
enyata [817]

Answer:

128

Step-by-step explanation:

-7x+2 = -18(-7)+2=126+2=128

7 0
2 years ago
A triangular pyramid and its net are shown. Rain uses Calculations below to conclude that the surface area of a triangular pyram
Harman [31]

Answer:

Rain is correct, calculates correctly, 238.5 square inches

Step-by-step explanation:

The given triangular pyramid is shown with the dimensions.

The surface area of the triangular pyramid is given by :

$A=\frac{1}{2}\left(a \times b\right) + 3\left(\frac{1}{2}\times b\times s\right)$

$A=\frac{1}{2}\left(10 \times 8.7\right) + 3\left(\frac{1}{2}\times 10\times 13\right)$

$A=43.5+(3\times 65)$

$A=43.5+195$

$A=238.5 \ \text{inche}^2$

Therefore, the surface area of the triangular pyramid is = 238.5 square inches.

5 0
3 years ago
Name the ray rhat angle PQR and angle SQR share
lyudmila [28]
<span>Ray Q is the ray that angle PQR and SQR shares. Because both angles has the ray of Q.
ray refers to a line with one endpoint
P is a ray, Q is a ray, R is a ray and S is a ray. When you put them together, they form angle.

Pls. see attachment for the presentation of the angle PQR and SQR and how they share ray Q</span>



7 0
4 years ago
Tania took selfies with her 8 cousins. Each cousins is in 2 or 3 picture. There are exactly 5 cousins on each picture. How many
andreev551 [17]

Answer:

4

Step-by-step explanation:

How many selfies did Tania take? (my first answer would be too many, but that's probably not the answer you're looking for :-) )

We know that each cousin appear 2 or 3 times overall.

If she would have taken each cousin exactly 2 times, that would be 16 cousins/photos

If she would have taken each cousin exactly 3 times, that would be 24 cousins/photos

We know there's exactly 5 cousins per photo...

so we have to find a multiple of 5 cousins/photos that is between 16 and 24.

The only possibility is 20 cousins/photos.  20 / 5 = 4 photos.

8 0
3 years ago
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