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
Jlenok [28]
2 years ago
14

A sports store had 60 backpacks in stock, some with wheels and some without wheels, before a new shipment of backpacks arrived.

The number of wheeled backpacks in the new shipment was twice the number of wheeled backpacks already in stock, and the number of backpacks without wheels in the new shipment
was five times the number of backpacks without wheels already in stock. After the new shipment arrived, there
were 330 backpacks in the store. Before the new shipment, there were x wheeled backpacks and y
backpacks without wheels. Which of the following equations can be used with x + y = 60 to solve for x and y?
a. 2x+5y=330
b. 2x+5y=270
c. 5x+2y=270
d. 5x+2y=330
Mathematics
1 answer:
Evgesh-ka [11]2 years ago
4 0
2x + 5y = 270

Two times the amount of wheeled backpacks. Let x = wheeled backpacks.

Five times the amount of non wheeled backpacks. Let y = non wheeled backpacks.

Total backpacks will be 330 so 330 - 60 = 270


Therefore you get 2x + 5y = 270
You might be interested in
the length of a rectangle is 9 cm and the diagonal of the rectangle is 11 cm. Find the width of the rectangle​
ss7ja [257]

Answer: The width  is the square root of 40 or 6.32

Step-by-step explanation:

9^2 + b^2 = 11^2  where b squared is the width  

81 + b^2 = 121

-81              -81

  b^2 = 40

b= 6.32

7 0
2 years ago
20 units Humulin R insulin in 100 mL of normal saline (NS) to infuse for 20 hours. (Round to the nearest tenth if applicable) a.
wariber [46]

Answer:

a) 1 unit per hour will be infused.

b) 5mL per hour will be infused.

Step-by-step explanation:

Each question can be solved as a rule of three with direct measures, that means we have a cross multiplication.

a. How many units per hour will be infused?

20 units are going to be infused in 20 hours. How many units are going to be infused each hour?

1 hour - x units

20 hours - 20 units

20x = 20

x = \frac{20}{20}

x = 1

1 unit per hour will be infused.

b. How many milliliters per hour will be infused?

100mL are going to be infused in 20 hours. How many mL are going to be infused each hour?

1 hour - x mL

20 hours - 100 mL

20x = 100

x = \frac{100}{20}

x = 5

5mL per hour will be infused.

4 0
3 years ago
Look at image below/above
Jlenok [28]

Answer:

127°

Step-by-step explanation:

RQN and MNQ are the same

3 0
2 years ago
Read 2 more answers
What is the total number of relative maximum and minimum points of the function whose derivative for all x is given by f ‘ (x) =
Alexeev081 [22]

Answer:

There are in total 3 maximum and minimum points of f(x)

Step-by-step explanation:

To find the number of stationary points (maximum and minimum points) in any function (f(x)), we need to find for what values of x does the derivative of f(x) equal to 0.

mathematically, for how many values of x does f'(x) = 0

f'(x) = x(x-3)^2(x+1)^4

0 = x(x-3)^2(x+1)^4

since the factors can be separately solved we can write

0 = x, 0 = (x-3)^2, 0 = (x+1)^4

x= 0, \sqrt{(x-3)^2} = \sqrt{0}, \sqrt{(x+1)^4}=\sqrt{0}

x=0, (x-3)=0, (x+1)=0

x = 0, x = 3, x = -1

Since there are 3 answers of x for which f'(x) = 0, we can say that the there are a total of 3 stationary (maximum or minimum) points in f(x).

8 0
3 years ago
F(x)=-2^2+16x-13<br><br><br> In vertex form
Llana [10]

Answer:

  • f(x) = - (x - 8)² + 51

Step-by-step explanation:

<u>Assumed it is:</u>

  • f(x) = - x² + 16x - 13

<u>Converting into vertex form:</u>

  • f(x) =
  • - x² + 16x - 13 =
  • - (x² - 16x + 64 - 64) - 13 =
  • - (x - 8)² + 64 - 13 =
  • - (x - 8)² + 51
7 0
2 years ago
Read 2 more answers
Other questions:
  • what is the factored form of the linear expression 4x+14 Ill give Brainly Award Comments, Thanks, and a 5-star rating
    8·1 answer
  • The distance between – 15 and - 2 is<br> (Simplify your answer.)
    5·2 answers
  • Factor each expression<br> 1. 3n + 9<br> 2. t² + 4t<br> 3. 15 + 20x
    12·1 answer
  • A goat is tethered by a 6 metre rope to the outside corner of a shed measuring 4 metres by 5 metres in a grassy field. What area
    13·1 answer
  • Sue either travels by bus or walks when she visits the shops. The probability that she catches the bus from the shops is 0.7. Sh
    6·1 answer
  • First person to get it right gets brainliest
    14·1 answer
  • Find the product of the following expression.<br> 4(3x2 - 4x + 5)
    11·1 answer
  • What is a rectangular prism
    6·2 answers
  • Plz help me!! I need explanation to help me understand a bit.
    11·1 answer
  • What is the slope of a line parallel to the line whose equation is 2. – y= -7. Fully
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!