1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nataliya [291]
2 years ago
10

Andrew gives a cashier $40 to buy 3 T-shirts that cost $n each. Which algebraic expression

Mathematics
2 answers:
kumpel [21]2 years ago
8 0

Answer:

1. B (40- 3n)

2.c (86)

Step-by-step explanation:

1. The shirts cost 3n. So you do 40- 3n(what the shirts cost) to find the amount of change he will recive.

2. Just plug the numbers in- 1.8(30) + 32=86.

jeyben [28]2 years ago
7 0
B c I think? ?????????????
You might be interested in
Select the postulate of equality or inequality that is illustrated.
Effectus [21]

I think this is the Transitive postulate of equality.

Personally I can't see much point in giving labels to these equalities.

6 0
3 years ago
Read 2 more answers
Rachel jogged along a trail that was one fourth of a mile long.she jogged along the trail 8times .how many miles did rachael jog
anygoal [31]
So you are given that the trail is 1/4 a mile
she jogged 8 *TIMES*
so 8 * 1/4 = the total miles she jogged
That equals to 2 miles...

Hope this helps :)
7 0
3 years ago
Azlyn can ride her horse 15.2 miles per hour. She is in an endurance race that is 76 miles
Tema [17]

Step-by-step explanation:

Remember, math is a language

when you see per think fractions

15.2 miles per hour = 15.2 miles / 1 hour

since this is a fraction, Units can cancel just like numbers

To cancel miles and be left with hours rearrange the fraction

1 hour / 15.2 miles

then multiply by 72 miles

\frac{1hour}{15.2miles}  \times 72miles

the miles cancel and youre left with hours!

so youd write and solve 72 / 15.2

3 0
3 years ago
In 45 years, Gabriel will be 4 times as old as she is right now <br> How old is she right now?
Brut [27]

Answer:

She is 11.25 years old.

Step-by-step explanation:

I just did 45 divided by 4.

3 0
3 years ago
In a randomly selected sample of 1169 men ages 35–44, the mean total cholesterol level was 210 milligrams per deciliter with a s
Aneli [31]

Answer:

The highest total cholesterol level a man in this 35–44 age group can have and be in the lowest 10% is 160.59 milligrams per deciliter.

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 = 210, \sigma = 38.6

Find the highest total cholesterol level a man in this 35–44 age group can have and be in the lowest 10%.

This is the 10th percentile, which is X when Z has a pvalue of 0.1. So X when Z = -1.28.

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

-1.28 = \frac{X - 210}{38.6}

X - 210 = -1.28*38.6

X = 160.59

The highest total cholesterol level a man in this 35–44 age group can have and be in the lowest 10% is 160.59 milligrams per deciliter.

5 0
3 years ago
Other questions:
  • B(n)=4-6(-1)<br> find the 4th term in the sequence
    15·1 answer
  • Helps pls! brailiest, thanks, rattings, etc. 20 full points!
    9·2 answers
  • ​Yesterday,Jack drove 39 and one half.He used 1 and one fourth gallons of gasoline. What is the unit rate for miles per​ gallon?
    5·1 answer
  • Slope intercept form for (18,-5),(18,20)
    5·1 answer
  • PLEASE HELP, I need this test done and something not failed. I dont understand.
    10·1 answer
  • PLS HELP ILL MARK U BRAINLIEST<br> I DID THE FIRST 1 I NEED HELP WITH THE SECOND &lt;3
    6·1 answer
  • PLEASE HELP ME FAST!! I am close to a 100 so please don't give me a wrong answer.
    13·1 answer
  • Eight years ago mario was 25% younger than he is now how old is mario now
    14·2 answers
  • In Exercises 9-14, decide whether enough information
    11·1 answer
  • The radius of a circle is 9 miles. What is the circle's circumference?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!