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navik [9.2K]
3 years ago
15

Iam working with factoring and rational expressions

Mathematics
1 answer:
Rudiy273 years ago
3 0
And the question is?
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Eight eagle stamps and two raccoon stamps cost $2.80. Three eagle stamps and four raccoon stamps cost $2.35. Find the cost of ea
nikklg [1K]

Answer:

Cost of each eagle stamp = $0.25

Cost of each racoon stamp = $0.4

Step-by-step explanation:

Given:

Cost of 8 eagle stamp and 2 racoon stamp = $2.80

Cost of 3 eagle stamp and 4 racoon stamp = $2.35

Find:

Cost of each stamp

Computation:

Assume;

Cost of each eagle stamp = e

Cost of each racoon stamp = r

So,

8e + 2r = 2.80........... Eq 1

3e + 4r = 2.35 ........... Eq 2

Eq 1 x 2

16e + 4r = 5.6 .........Eq3

Eq 3 - Eq 2

13e = 3.25

e = 0.25

Cost of each eagle stamp = $0.25

8e + 2r = 2.80

8(0.25) + 2r = 2.80

2 + 2r = 2.80

r = 0.4

Cost of each racoon stamp = $0.4

6 0
3 years ago
Two kids are roller skating. Amy, with a mass of 55 kg, is traveling forward at 3 m/s. Jenny, who has a mass of 40 kg, is travel
Sliva [168]
The action of crashing would lower the speed by at least half so 1.5 + 2.5 = 4. But since you do not know in which way they crashed I would just say that this question is not telling how much they slow down so, I would just do 5 m/s + 3 m/s = 8 m/s travelling in the direction Amy was moving but since the larger mass would move the smaller mass and adjust I'd say they are both moving at 3 m/s.
3 0
3 years ago
Read 2 more answers
A dinner cost $22 and a sales tax of $1.87 was added to the bill. How much would the sales tax be on a $66 dinner? What is the t
alexdok [17]

Answer:

The correct answer is the sales tax charged is $5.61 for $66 dinner at 8.5% tax rate.

Step-by-step explanation:

Cost of the dinner is $22. Tax levied on it is $1.87

Let x% is the rate of tax in the city.

Therefore, x% of 22 = 1.87

⇒ x = 1.87 × \frac{100}{22} = 8.5

Therefore 8.5% is the tax rate in the city on foods.

Now another dinner costs $66.

Tax levied on it at the same percentage is given by 8.5% of 66 = $5.61.

Thus $5.61 as sales tax would be charged for a $66 dinner.

8 0
3 years ago
How many thousands are in 26 thousands and 13 hundreds?
kifflom [539]

Answer:

27

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Let a be an mn matrix, and let u and v be vectors in irn with the property that au = 0 and av = 0. explain why a(u + v) must be
tatiyna
\mathbf{Au}=\mathbf0
\mathbf{Av}=\mathbf0

\implies\mathbf{Au}+\mathbf{Av}=\mathbf0
\implies\mathbf A(\mathbf u+\mathbf v)=\mathbf0

Multiplying by scalars c,d won't change this fact.
4 0
3 years ago
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