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3 years ago

12

Since water weighs 8.355 pounds to the gallon how much do 9.4 gallons weigh?

1 answer:

BabaBlast [244]3 years ago

3 0

Answer:78.396 pounds

Step-by-step explanation:

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11. Solve 5(2x – 3) = x – 15 + 9x for x.

zepelin [54]

Answer:

$\boxed{\bold{True \ For \ All \ x}}$

Explanation:

[ Step One ] Group Like Terms

$\bold{5\left(2x-3\right)=x+9x-15}$

[ Step Two ] Combine Similar Elements: $\bold{x+9x=10x}$

$\bold{5\left(2x-3\right)=10x-15}$

[ Step Three ] Expand $\bold{5\left(2x-3\right): \ 10x-15}$

$\bold{10x-15=10x-15}$

[ Step Four ] Add 15 To Both Sides

$\bold{10x-15+15=10x-15+15}$

[ Step Five ] Simplify

$\bold{10x=10x}$

[ Step Six ] Subtract 10x From Both Sides

$\bold{10x-10x=10x-10x}$

[ Step Seven ] Simplify

$\bold{0=0}$

[ $\boxed{\bold{Final \ Answer}}$ ]

➤ $\bold{Both \ Sides \ Are \ Equal, \ True \ For \ All \ x}$

$\boxed{\bold{Mordancy}}$

4 0

3 years ago

Trigonometry question

kaheart [24]

Answer:

c

Step-by-step explanation:

$\tan \theta=\frac{perpendicular}{base} \\\tan 45=\frac{2200}{d} \\1=\frac{2200}{d} \\d=2200~ft.$

8 0

3 years ago

The point (6, 7) is reflected across the y axis. what are the coordinates of the reflection

aev [14]

Answer:

Hello!!

the point (6, 7) is reflected across the y axis. what are the coordinates of the reflection?

(-6, 7)

Step by Step Explanation:

When reflecting (x, y) over the x axis is (x, -y)

When reflecting (x, y) over the y axis is (-x, y)

Hope this helps!

7 0

2 years ago

Read 2 more answers

Jenise is buying a car for $7,155. The TAVT rate is 5.9%.

Afina-wow [57]

The answer is $7577.15

8 0

2 years ago

A geologist examines 14 geological samples for iron concentration. The mean iron concentration for the sample data is 0.181 cc/c

kykrilka [37]

Answer:

The 90% confidence interval for the population mean iron concentration is between 0.167 cc/m³ and 0.195 cc/m³.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.9}{2} = 0.05$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.05 = 0.95$ , so $z = 1.645$

Now, find M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

$M = 1.645*\frac{0.0318}{\sqrt{14}} = 0.0140$

The lower end of the interval is the sample mean subtracted by M. So it is 0.181 - 0.0140 = 0.167 cc/m³.

The upper end of the interval is the sample mean added to M. So it is 0.181 + 0.0140 = 0.195 cc/m³.

The 90% confidence interval for the population mean iron concentration is between 0.167 cc/m³ and 0.195 cc/m³.

3 0

3 years ago