All categories

3 years ago

8) Jennifer has a collection of 1,600 coins. Of the coins, 40% are dated

Mathematics

1 answer:

Kitty [74]3 years ago

4 0

<h3>Answer: 400 (choice A)</h3>

==============================================

Explanation:

40% + 35% = 75% of the coins were either made before 1940, or made from 1940 to 1980. In other words, 75% of the coins were minted before 1980. This leaves 100% - 75% = 25% of the coins to being minted after 1980.

25% of 1600 = 0.25*1600 = 400 coins were made after 1980

You might be interested in

PLEASE HELP WILL GIVE BRIANLIEST!

IceJOKER [234]

Answer:

A"(1, -5)

B"(3, -5)

C"(4, -3)

D"(2, -3)

Step-by-step explanation:

When you are graphing coordinates make sure you have graph paper. When you plot the coordinates you reflect it over the x axis. The slide down 2 units down.

Hope this helps ☝️☝☝

3 0

3 years ago

Solve 3x + 2 = 15 for x using the change of base formula log base b of y equals log y over log b. −1.594 0.465 2.406 4.465

disa [49]

<u>Answer:</u>

The value in 3x + 2 = 15 for x using the change of base formula is 0.465 approximately and second option is correct one.

<u>Solution:</u>

Given, expression is $3^{(x+2)}=15$

We have to solve the above expression using change of base formula which is given as

$\log _{b} a=\frac{\log a}{\log b}$

Now, let us first apply logarithm for the given expression.

Then given expression turns into as, $x+2=\log _{3} 15$

By using change of base formula,

$x+2=\frac{\log _{10} 15}{\log _{10} 3}$

x + 2 = 2.4649

x = 2.4649 – 2 = 0.4649

Hence, the value of x is 0.465 approximately and second option is correct one.

3 0

3 years ago

Read 2 more answers

PLEASE HELP! WILL MARK BRAINLIEST!

dedylja [7]

Answer:

at first put the value of X

after that do the equation.

Step-by-step explanation:

hope it will help you

5 0

3 years ago

Read 2 more answers

Solve <br> log 3x -log 13=2. Round to the nearest thousandth if necessary.

Vikentia [17]

$\bf \textit{Logarithm of rationals}\\\\
log_a\left( \frac{x}{y}\right)\implies log_a(x)-log_a(y)
\\\\\\
\textit{Logarithm Cancellation Rules}\\\\
log_a a^x= x\qquad \qquad \boxed{a^{log_ax}=x}\\\\
-------------------------------\\\\
log(3x)-log(13)=2\implies log_{10}(3x)-log_{10}(13)=2
\\\\\\
log_{10}\left( \frac{3x}{13} \right)=2\implies 10^{log_{10}\left( \frac{3x}{13} \right)}=10^2\implies \cfrac{3x}{13}=2
\\\\\\
3x=26\implies x=\cfrac{26}{3}\implies x=8\frac{2}{3}$

4 0

3 years ago

Which term best describes the function represented by the graph?

inysia [295]

Answer:

Step-by-step explanation:

Its a straight line, and remember, you ALWAYS read graphs from left to right, so its linear increasing. :)

7 0

3 years ago