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Aleonysh [2.5K]
4 years ago
10

QUICK HELP!!!!

Mathematics
2 answers:
gladu [14]4 years ago
6 0

Answer:

21

Step-by-step explanation:

Since the tank is already 1/6 full, it only needs another 2/6 to get to half.

2/6=1/3

so multiply 7 by 3 to get 21

antoniya [11.8K]4 years ago
3 0

Rewrite the fractions so they have a common denominator:

1/2 = 3/6

The tank was at 1/6 so:

3/6 - 1/6 = 2/6 simplifies to 1/3 of gas was added by the 7 gallons

There are three 1/3's to a whole ( full tank).

7 x 3 = 21

The gas tank can hold 21 gallons.

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yKpoI14uk [10]

Answer:

the slope in the equation is 5, while the slope on the graph is 2

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3 years ago
A biologist has been observing a tree's height. This type of tree typically grows by 0.22 feet each month. Fifteen months into t
Lyrx [107]

Data:

x: number of months

y: tree's height

Tipical grow: 0.22

Fifteen months into the observation, the tree was 20.5 feet tall: x=15 y=20.5ft (15,20.5)

In this case the slope (m) or rate of change is the tipical grow.

m=0.22

To find the line's slope-intercep equation you use the slope (m) and the given values of x and y (15 , 20.5) in the next formula to find the y-intercept (b):

\begin{gathered} y=mx+b \\ 20.5=0.22(15)+b \\ 20.5=3.3+b \\ 20.5-3.3=b \\ 17.2=b \end{gathered}

Use the slope(m) and y-intercept (b) to write the equation:

\begin{gathered} y=mx+b \\  \\ y=0.22x+17.2 \end{gathered}A) This line's slope-intercept equation is: y=0.22x+17.2

B) To find the height of the tree after 29 months you substitute in the equation the x for 29 and evaluate to find the y:

\begin{gathered} y=0.22(29)+17.2 \\ y=6.38+17.2 \\  \\ y=23.58 \end{gathered}Then, after 29 months the tree would be 23.58 feet in height

C) In this case as you have the height and need to find the number of moths you substitute the y for 29.96feet and solve the equation for x, as follow:

\begin{gathered} 29.96=0.22x+17.2 \\ 29.96-17.2=0.22x \\ 12.76=0.22x \\ \frac{12.76}{0.22}=x \\  \\ 58=x \end{gathered}Then, after 58 months the tree would be 29.96feet tall
3 0
1 year ago
2.
Nata [24]

Answer:

I tried looking it up, and i found 15 square units. sorry if its wrong :(

Step-by-step explanation:

4 0
3 years ago
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A peice of fabric costs $5.29 a yard which is an estimated cost of 16.3 yards of fabric?
DerKrebs [107]

Answer:

90

Step-by-step explanation:

$5.29  * 16.3 = $86.227

=$86.23

86.23 could be rounded up to 90

6 0
3 years ago
Please help me with this 4 question​
Dennis_Churaev [7]

Answer:

C

Step-by-step explanation:

Volume in math means s the amount of space in a 3D object.

the formula is l × W × H

So you do 25 × 11.25 × 6

it equals to 1687.5.

Therefore, the volume of the brick is 1687.5

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2 years ago
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