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
Vedmedyk [2.9K]
2 years ago
11

Mary bought 10 notebooks that each cost the same amount. She paid with a $100 bill and receive $13 dollars in change a. Write an

equation that can be used to find x, the cost of each notebook. b . Solve the equation
Mathematics
2 answers:
AURORKA [14]2 years ago
5 0

Answer:

  • 10x = 100 - 13
  • $8.70

Step-by-step explanation:

<u>The equation would be:</u>

  • 10x = 100 - 13

<u>Solving to get the cost of each notebook:</u>

  • 10x = 87
  • x = 87/10
  • x = 8.7
uranmaximum [27]2 years ago
4 0

Answer:

\frac{100-13}{x}

Step-by-step explanation:

$100 - $13 = $87

87 / x = \frac{87}{x}

Chow,...!

You might be interested in
10. please for 25 points​
Xelga [282]

Answer:

The answer choice is B

Step-by-step explanation:

In order for a function to work, the input value must go with only one output value, so the only one that work is b

7 0
3 years ago
Read 2 more answers
Jeremy buys 2 sweaters for $18 each. He can use only one of the following coupons:
katen-ka-za [31]

Jeremy should use coupon 2 because when you multiply both the sweaters (36) by .25 you get 9, and then you subtract 36 by 9 which is 27.

But when you use coupon 1 you multiply 18 by .40 which is 7.20 where you subtract 18 by 7.20 which is 10.80. You then add 10.80 with 18 which is 28.80.

I don't even know what the question is but I found the same problem and this was the answer

7 0
3 years ago
How do you do this. Please give a full answer and explain why.
OverLord2011 [107]

<u>L</u><u>a</u><u>w</u><u> </u><u>o</u><u>f</u><u> </u><u>E</u><u>x</u><u>p</u><u>o</u><u>n</u><u>e</u><u>n</u><u>t</u>

\displaystyle \large{ {a}^{ - n}  =  \frac{1}{ {a}^{n} } }

Compare the terms.

\displaystyle \large{ {a}^{ - n}  =   {( - 2)}^{ - 3} }

Therefore, a = -2 and n = 3. From the law of exponent above, we receive:

\displaystyle \large{ {( - 2)}^{ - 3}  =  \frac{1}{ {( - 2)}^{ 3} } }

<u>E</u><u>x</u><u>p</u><u>o</u><u>n</u><u>e</u><u>n</u><u>t</u><u> </u><u>D</u><u>e</u><u>f</u><u>.</u> (For cubic)

\displaystyle \large{ {a}^{3}  = a \times a \times a }

Factor (-2)^3 out.

\displaystyle \large{ {( - 2)}^{ - 3}  =  \frac{1}{( - 2) \times ( - 2) \times ( - 2)}}

(-2) • (-2) = 4 | Negative × Negative = Positive.

\displaystyle \large{ {( - 2)}^{ - 3}  =  \frac{1}{4 \times ( - 2)}}

4 • (-2) = -8 | Negative Multiply Positive = Negative.

\displaystyle \large{ {( - 2)}^{ - 3}  =  \frac{1}{  - 8}}

If either denominator or numerator is in negative, it is the best to write in the middle or between numerator and denominators.

Hence,

\displaystyle \large \boxed{ {( - 2)}^{ - 3}  =  -  \frac{1}{  8}}

The answer is - 1 / 8

3 0
2 years ago
Two miners are trying to push a stationary mine cart filled with gold. Miner A is exerting 25 N while miner B is exerting 20 N.
Oliga [24]

Answer:

b. 45 N

Step-by-step explanation:

The sum of the forces exerted by the two miners = 25 + 20

                                           = 45 N

Since after applying a force of 45 N by the two miners the cart remained stationary, it implies that a resistance force of at least 45 N acts against their push. Thus, the force exerted by the road could be equal to 45 N or greater than 45 N.

Probably, if the sum of the forces applied is 46 N, the cart would move. Which depends on the value of resistance force applied by the road. Thus, the appropriate answer from the given option is B.

Since the force applied on the cart equals the resistance force exerted by the road, the cart would not move.

6 0
2 years ago
This is the question i have.
Nimfa-mama [501]

S (-10,1)

T (-6,1)

U (-10,9)

V (-6,9)

3 0
3 years ago
Other questions:
  • Determine the values of h, k, a, and b for the ellipse shown. Use the standard form of the equation. (h, k) = ( , ) a = b =
    7·2 answers
  • The perimeter of a triangular plot of land is 2400ft . the longest side is 200 ft less than twice the shortest. the middle side
    8·1 answer
  • Write the expression. A number b squared
    13·1 answer
  • The histogram shows the ages of people in a community chorus. How many people in the chorus are 50 or older? Enter your answer i
    7·2 answers
  • During a sale, 20-cent candy bars were sold at 3 for 50 cents. How much is saved on 9 bars?
    12·1 answer
  • <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B3%20%7Bw%7D%5E%7B6%7D%20%20%7Bv%7D%5E%7B5%7D%20%7D%7B15%20%7Bw%7D%5E%7B2%7D%20v%7
    11·1 answer
  • 6. Hank can type 24 words per minute. Hank starts
    12·1 answer
  • : -- ) PLEASE HELP me out with this one
    9·1 answer
  • 200,000,000 in scientific notation
    10·2 answers
  • Try your best. And i try to ask questions everyday for you guys to solve. like puzzles.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!