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3 years ago

X=7^y how can you rewrite this equation in y = form ?

Mathematics

1 answer:

Anuta_ua [19.1K]3 years ago

6 0

Answer:

y = lnx / ln 7.

Step-by-step explanation:

x = 7^y

Take logarithms of both sides:

ln x = ln 7^y

ln x = y ln 7 ( because ln a^b = b ln a. One of the Laws of Logarithms).

y = lnx / ln 7.

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Lindy works at a pizza restaurant and gets a 10% employee discount. She knows that if she orders d drinks and a medium pizza wit

timofeeve [1]

Answer:

$17.28.

Step-by-step explanation:

In the expression, d represents the number of drinks she orders and t represents the number of toppings.

In this case, she orders 4 drinks and 3 toppings, so d = 4 and t = 3.

0.90(2.25d + 1.40t + 6)

= 0.9(2.25 * 4 + 1.4 * 3 + 6)

= 0.9(9 + 4.2 + 6)

= 0.9 * 19.2

= 17.28

So, the total cost for Lindy and her friends will be $17.28.

Hope this helps!

8 0

4 years ago

153 is .9% of what number?

victus00 [196]

If you mean 9% of 153 your answer is 13.77

7 0

3 years ago

Help me please!! ill mark brainliest

masya89 [10]

Answer:

Step-by-step explanation:

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3 0

3 years ago

A ferry traveled 1 6 6 1 start fraction, 1, divided by, 6, end fraction of the distance between two ports in 3 7 7 3 start f

docker41 [41]

Answer:

$\frac{7}{18}$ of the distance

Step-by-step explanation:

We know that a ferry traveled $\frac{1}{6}$ of the distance between two ports in $\frac{3}{7}$ hours.

In order to calculate what fraction of the distance between the two ports can the ferry travel in one hour we can do the following reasoning :

The rate of the ferry is the same at any time.

The ferry will travel $\frac{1}{6}$ of the distance in $\frac{3}{7}$ hours.

If we divide each fraction by 3 ⇒

$\frac{\frac{1}{6}}{3}=\frac{1}{18}$ and $\frac{\frac{3}{7}}{3}=\frac{1}{7}$

We do this to obtain a ''1'' in the numerator of the second fraction (the hours fraction). Now, we can say that :

The ferry will travel $\frac{1}{18}$ of the distance in $\frac{1}{7}$ hours.

Finally, we multiply each fraction by 7 (in order to obtain the distance for 1 hour) ⇒

$(\frac{1}{18}).7=\frac{7}{18}$ and $(\frac{1}{7}).7=1$

We found out that the ferry will travel $\frac{7}{18}$ of the distance in 1 hour.

4 0

3 years ago

Jake had 2.95 mL of a liquid. He added more liquid and now has 3.56 mL.

notsponge [240]

0.61 ml. 3.56 mL - 2.95mL = the amount added to the jar

6 0

4 years ago