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
hoa [83]
3 years ago
15

Sally is buying new school supplies she uses a 15% off coupon on the set of markers that was originally $3 she also bought some

papers that was 20% off total Sally spent $5.35 after using her coupon how much was the original price of the paperl
Mathematics
1 answer:
timurjin [86]3 years ago
6 0
[(100-15)/100 * $3]
= $2.55
$5.35 - $2.55
= $2.80 |80% paper|

80/100 = 2.80/x
4/5 = 2.80/x
4x = 14
x = 3.5

Original price of the paper = $3.50
You might be interested in
If 111 people attend a concert and tickets for adults cost $4 while tickets for children cost $3.25 and total receipts for the c
VikaD [51]

Answer:

57 children

54 adults

Step-by-step explanation:

Let's call x the number of children admitted and call z the number of adults admitted.

Then we know that:

x + z = 111

We also know that:

3.25x + 4z = 401.25

We want to find the value of x and z. Then we solve the system of equations:

-Multiplay the first equation by -4 and add it to the second equation:

-4x - 4z = -444

3.25x + 4z = 401.25

----------------------------------

-0.75x = -42.75

x =\frac{-42.75}{-0.75}\\\\x=57

Now we substitute the value of x in the first equation and solve for the variable z

57 + z = 111

z = 111-57

z = 54

5 0
3 years ago
Read 2 more answers
A homeowner uses a $10 bill to pay a neighbor for cutting his lawn. The
timama [110]

Answer:

c

Step-by-step explanation:

It has a constant value.

7 0
3 years ago
Round 7.3519 to 1 decimal place
Temka [501]
7.4 is your final answer, hope that help, one decimal place is the first number after the decimal.
8 0
3 years ago
Data consistent with summary quantities in the article "Effects of Fast-Food Consumption on Energy Intake and Diet Quality Among
Olegator [25]

Answer:

a) X[bar]₁=  1839.20 cal

b) X[bar]₂= 1779.07 cal

c) S₁= 386.35 cal

Step-by-step explanation:

Hello!

You have two independent samples,

Sample 1: n₁= 15 children that did not eat fast food.

Sample 2: n₂= 15 children that ate fast food.

The study variables are:

X₁: Calorie consumption of a kid that does not eat fast food in one day.

X₂: Calorie consumprion of a kid that eats fast food in one day.

a)

The point estimate of the population mean is the sample mean

X[bar]₁= (∑X₁/n₁) = (27588/15)= 1839.20 cal

b)

X[bar]₂= (∑X₂/n₂)= (26686/15)= 1779.07 cal

c)

To calculate the sample standard deiation, you have to calculate the sample variance first:

S₁²= \frac{1}{n_1-1}[∑X₁² - (( ∑X₁)²/n₁)]= \frac{1}{14} + [52829538 - (\frac{27588^{2} }{15}) = 149263.4571 cal²

S₁= 386.35 cal

I hope it helps!

7 0
3 years ago
Question in photo!! Will mark Brainlyist
victus00 [196]

Answer:

Option B.

a

Step-by-step explanation:

Given:

-3( -x + a ) + 7 < 5     When x = -1

To Find:

a ?

Solution:

-3( -x + a ) + 7 < 5     When x = -1

Substitute x = -1 in above  we get

-3(-(-1) + a ) + 7 < 5

-3(1 + a) < 5 - 7

Using Distributive Property we get i.e A(B+C) = AB + AC

\therefore -3\times 1 +(-3)\times a

7 0
3 years ago
Other questions:
  • How much of his allowance did Nathan spend? Explain how you found your answer. WILL GIVE BRAINLIEST
    9·1 answer
  • PLEASE PLEASE HELP. What is the length of BC in the right triangle below?
    11·1 answer
  • angle 1 is a supplement of angle 2 and a compliment of angle 3 and angle 1= 68 degrees what is angle 2 - angle 3
    5·1 answer
  • Find HCF and LCF of 377, 145and so 667​
    6·1 answer
  • What is <br><img src="https://tex.z-dn.net/?f=87251%20%7B2%7D%5E%7B9%7D%203%20%5Ctimes%20%5Cfrac%7B23%7D%7B25%20%5Csqrt%5B5%5D%7
    6·1 answer
  • 64^2/3 divided by 32^2/5 simplified?
    10·1 answer
  • In the expression , 8.92 x 10^3 , which number is the base ?
    7·1 answer
  • Um who else is in love with Kenma Kozume?
    14·1 answer
  • Amy earned $25 after babysitting for 3 hours. If she always charges the same rate, how much will she make after working for 7 ho
    6·2 answers
  • You are making a 2 ingredient trail mix with almonds and raisins. There is a 5:7 ratio of almonds to raisins. How many ounces of
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!