Select all that apply. PLEASE HELP!!!!!

A tip jar contains x one-dollar bills and y five- dollar bills. There are 42 bills in the jar, and the total value is $90.00. Ho

Anna35 [415]

Answer:

30 one-dollar bills and 12 five-dollar bills.

Step-by-step explanation:

Let x represent number of one-dollar bills and y represent number of five-dollar bills.

We have been given that a tip jar contains x one-dollar bills and y five- dollar bills. There are 42 bills in the jar. We can represent this information in an equation as:

$x+y=42...(1)$

$x=42-y...(1)$

We are also told that the total value of all bills is $90.00. We can represent this information in an equation as:

$1x+5y=90...(2)$

Upon substituting equation (1) in equation (2), we will get:

$42-y+5y=90$

$42+4y=90$

$42-42+4y=90-42$

$4y=48$

$\frac{4y}{4}=\frac{48}{4}$

$y=12$

Therefore, there are 12 five-dollar bills in the tip jar.

Upon substituting $y=12$ in equation (1), we will get:

$x=42-y\\\\x= 42-12\\\\x=30$

Therefore, there are 30 one-dollar bills in the tip jar.

7 0

3 years ago

Find the value of x in the isosceles triangle shown below <br><br> Thank you!

iogann1982 [59]

And isosceles triangle always equals 180 degrees so to find the value of x what number would you need for the value to be 180

3 0

3 years ago

During the quarantine, the Jones family installed a rectangular pool in their backyard that was 10 feet wide and 15 feet long. T

olganol [36]

15 feet martins family work for with the dodo code for a mask is a horrible thing to ware a little kid in a sweat room or the room with the kids and then they have a white black brown brown green green orange brown orange green green orange orange brown orange orange orange

5 0

3 years ago

E=mc? what goes after c

Jet001 [13]

C: is the speed of light (3*10^8 m/s) and it is squared (raised to the power 2) in this equation.

3 0

3 years ago

Read 2 more answers

The average maximum monthly temperature in Campinas, Brazil is 29.9 degrees Celsius. The standard deviation in maximum monthly t

velikii [3]

Answer:

3.84% of months would have a maximum temperature of 34 degrees or higher

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 29.9, \sigma = 2.31$