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STatiana [176]
3 years ago
11

A baker purchased 12 lb of wheat flour and 15 lb of rye flour for a total cost of $18.30. A second purchase at the same prices,

included 15 lb of wheat flour and 10 lb of rye flour. The cost of the second purchase was $16.75. Find the cost per pound of the wheat flour and the rye flour.
Mathematics
1 answer:
vivado [14]3 years ago
3 0
12w+15r=18.30 /*2
15w+10r=16.75 /*3

24w+30r=36.60, subtract this equation from the other one
45w+30r=50.25

21w=13.65
w=13.65/21
w=0.65 is a cost per pound for wheat flour

From the first equation we have
r=(18.30-12w)/15
r=(18.30-12*0.65)/15
r=0.70 is a cost per pound for rye flour
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In 1994, the moose population in a park was measured to be 3000. By 1998, the population was measured
dem82 [27]

Answer:

  P(t) = 100t +2600

  4100 in 2005

Step-by-step explanation:

You are given two points for (year, population) = (t, p):

  (4, 3000), (8, 3400)

It is useful to use the two-point form of the equation for a line.

  p = (p2 -p1)/(t2 -t1)(t -t1) +p1

  p = (3400 -3000)/(8 -4)(t -4) +3000

  p = 400/4(t -4) +3000

  p = 100t +2600

  P(t) = 100t +2600 . . . . written in functional form

In 2005, the population is predicted to be ...

  P(15) = 100×15 +2600 = 4100

6 0
3 years ago
PLease Help! I will give you the brainiest and a lot of points!
gtnhenbr [62]

Answer:

this is the venn diagram I guess..

Step-by-step explanation:

find answer from this.. and check if it is correct

6 0
3 years ago
2w(w2 + 3w - 5) + 3w3 + 2(w2 + 1)
marysya [2.9K]

Answer:

=5w3+8w2−10w+2

Step-by-step explanation:

Simplify

1

Distribute

2

(

2

+

3

−

5

)

+

3

3

+

2

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2

+

1

)

2

3

+

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−

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+

3

3

+

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(

2

+

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)

2

Distribute

2

3

+

6

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−

1

0

+

3

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+

2

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+

1

)

2

3

+

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1

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+

3

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+

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Combine like terms

2

3

+

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1

0

+

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+

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6

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Combine like terms

5

3

+

6

2

−

1

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+

2

2

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5

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8

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2

sorry if it don't make sense ;c

7 0
3 years ago
<img src="https://tex.z-dn.net/?f=8%20-%203w%20%3D%20%20-%202w" id="TexFormula1" title="8 - 3w = - 2w" alt="8 - 3w = - 2w" ali
lapo4ka [179]

3w+8=50

3w=50-8=42

w= 42/3=14

7 0
3 years ago
Find the area of the shape (1/4 circle with a radius of 2)
QveST [7]
Formula: A = pi(r)^2
1/4(2)^2pi
1/4 * 4 pi = just pi
The area would be 3.14
6 0
3 years ago
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