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shtirl [24]
3 years ago
7

Example Stem: A game has green and blue pieces. The ratio of

Mathematics
1 answer:
Scilla [17]3 years ago
3 0

Answer:

B and D are both true statements

Step-by-step explanation:

A is false. The ratio of green pieces to blue pieces is 7:5 is false as the statement tells us total is 12 when green is 5.  This means total is 12.

In the A. statement, it describes green pieces to blue pieces, where blue pieces are more than 5, its order in A states 5 last, meaning blue=5 and this is not true.

B is true. This speaks of the total pieces to blue pieces is 12:7 this is true as it speaks of total first = 12. where blue is also =7. This is true.

C is false. There must be 7 more blue pieces than green pieces this is false as there are two (2)more blue pieces than green, not 7.

D is true. The ratio of total pieces to green pieces is 12:5 is also true as there are 12 total and 5 green and it states this in same order within the statement showing the reverse of the statement in the question where green still is 5 and total is 12.

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Suppose a student carrying a flu virus returns to an isolated college campus of 7000 students. Determine a differential equation
Alex73 [517]

Answer:

The differential equation is  \frac{dx(t)}{dt} = k   x(t) [7000 - x(t)]

Step-by-step explanation:

From the question we are told that

     The number of students are n =  7000

      The number of student that have contracted the flu is  x(t)

The number of student that don't have the flu is mathematically represented as

      z = 7000 - x(t)

The rate at which the disease spread is proportional to the number of interactions between students with the flu and students who have not yet contracted it, which can be mathematically represented as

         \frac{dx(t)}{dt} \ \ \ \alpha\ \ \   x(t) [7000 - x(t)]

=>     \frac{dx(t)}{dt} = k   x(t) [7000 - x(t)]

5 0
3 years ago
marianne buys 16 bags of potting soil that comes in 5/8 lb. bags. how many pounds of potting soil foes she has.
andriy [413]
One bag of soil is 5/8 pounds.
you have 16 of them.
just multiply 16 by 5/8.
you could just type it into your calculator, or you could do it the long way:
16 *  \frac{5}{8} \\ \frac{16*5}{8} \\  \frac{8*2*5}{8} \\ 2*5\\10

she has 10 pounds of potting soil.
8 0
3 years ago
Suppose that one box contains 201 long bolts and 323 short bolts ,and that the other box contains 505 long bolts and 412 short b
astraxan [27]

Answer:

the answer is 420 your welcome

4 0
3 years ago
A produce store sold 45 red apples. If the ratio of red apples to green apples sold was 5 : 2, what is the combined amount of re
lisabon 2012 [21]

The ratio of Red Apples to Green Apples is 5:2. The proportion of red apple is 5/7.

The store sold 45 red apples.

So the combined amount of red and green apples sold = No of red apples sold divided by the proportion of red apples = 45/ (5/7) = 63

The combined amount of red and green apples sold is 63 apples.

6 0
3 years ago
What is the answer to this?
Dennis_Churaev [7]

Answer:

<h2>x = 14, z = 65</h2>

Step-by-step explanation:

The angles (5x - 5)° and (6x + 31)° are supplementary angles.

Supplementary Angles add up to 180°.

Therefore we have the equation:

5x - 5 + 6x + 31 = 180             <em>combine like terms</em>

(5x + 6x) + (-5 + 31) = 180

11x + 26 = 180               <em>subtract 26 from both sides</em>

11x = 154             <em>divide both sides by 11</em>

x = 14

The angles (5x - 5)° and z° are vertical angles.

Vertical angles are congruent.

Therefore we have the equation:

z = 5x - 5               <em>put x = 14 to the equation</em>

z = 5(14) - 5

z = 70 - 5

z = 65

4 0
2 years ago
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