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Arlecino [84]
3 years ago
6

mr. graves gave her class 12 minutes to read. carrie read 5 1/2 pages in the that time. at what rate,in pages per hour, did carr

ie read

Mathematics
2 answers:
GarryVolchara [31]3 years ago
7 0
27.5 pages per an hour

klio [65]3 years ago
7 0
27.5 pages per hour
You might be interested in
Find the coordinate of the points of intersection of the graphs without building them: 20x - 15y = 100 and 3x - 5 =6y
Mekhanik [1.2K]

Answer:

(-4.666667, -3.16667)

Step-by-step explanation:

(-4 2/3, -3 1/6)

5 0
3 years ago
Read 2 more answers
Please please help me with this
solniwko [45]

Answer:

  38

Step-by-step explanation:

The simplest (almost trivial) solution is to add the two inequalities:

  (x +3y) +(3x +2y) ≤ (13) +(25)

  4x +5y ≤ 38

The maximum value of P is 38.

_____

Perhaps more conventionally, you can graph the equations, or solve them to find the point of intersection of their boundary lines. That point is (x, y) = (7, 2), which is the point in the doubly-shaded solution space that gives the maximum value of P (puts the objective function line farthest from the origin).

__

In the attached graph, we have been a little sloppy, not applying the constraints that x, y ≥ 0. For the purpose of finding the requested solution, that is of no consequence.

3 0
4 years ago
7 - 2.25 =<br><br>9- 1.9 = <br>answer both <br>10 Points and mark as brianliste​
Furkat [3]

Answer:

7 - 2.25

= 7 - 2

= 5 - 0.25

= 4.75

9 - 1.9

= 9 - 1

= 8 - 0.9

= 7.1

I hope this helps and that you have a great day!

<em />

<em>Ravenna</em>

5 0
3 years ago
Convert the metric measurement. 3,450 ml =____ L (1 L = 1000 ml)
Savatey [412]

Answer:

To convert ml to L you would divide your number by 1000, because 1L=1000ml

3,450/1000= 3.45

3,450ml = 3.45L

6 0
4 years ago
A scientist needs 10 L of a solution that is 60% acid. She has a 50% acid solution and a 90% acid solution she can mix together
sineoko [7]

Answer:

<u>The equations system is:</u>

<u>x + y = 10</u>

<u>0.5x + 0.9y = 6</u>

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Liters of 60% acid solution needed = 10

x = Number of liters of the 50% solution

y = Number of liters of the 90% solution

2. Which equation represents the total liters of acid that are needed?

There are two equations needed:

The first one related to the total liters needed, 10 in this case:

x + y = 10

The second one related to the acid concentration of the 10 liters:

0.5x + 0.9y = 10 * 0.6

0.5x + 0.9y = 6

<u>The equations system is:</u>

<u>x + y = 10</u>

<u>0.5x + 0.9y = 6</u>

Solving for x and y in the 2nd equation, we have:

0.5 (10 - y) + 0.9y = 6

5 - 0.5y + 0.9y = 6

0.4y = 6 - 5

0.4y = 1

y = 1/0.4 = 2.5 ⇒ x = 7.5 (10 - 2.5)

The scientist can mix 7.5 liters of the 50% acid solution and 2.5 liters of the 90% acid solution to get the 10 liters of the 60% acid solution.

6 0
3 years ago
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