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Arisa [49]
3 years ago
6

You are at the store, and are trying to remember how much bread, meat, and cheese you were supposed to buy. The bread costs $1 p

er loaf, the meat costs $4 per pound, and the cheese costs $3 per pound. You know that you are to buy eight items, that the total cost will be $17, and that you are supposed to purchase three times as much cheese as meat. How many of each do you need to purchase?
Mathematics
1 answer:
MrMuchimi3 years ago
7 0

Answer:

  • 4 bread loafs, 1 pound of meat, 3 pounds of cheese

Step-by-step explanation:

Let loaf of bread be b, meat be m and cheese be c

<u>Based on the given, we have following equations:</u>

  • b + m + c = 8
  • c = 3m
  • b + 4m + 3c = 17

<u>Subtract the first equation from the third and substitute c with m:</u>

  • b + 4m + 3c - (b + m + c) = 17 - 8
  • 3m + 2c = 9
  • 3m + 2(3m) = 9
  • 9m = 9
  • m = 1

<u>Then</u>

  • c = 3*1 = 3
  • b = 8 - (1 + 3) = 4

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---------------- / ---------------------- = ----------------- / ----------------------- = 
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= ---------------- * ----------- = ------------------
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3 years ago
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Answer:

Step-by-step explanation:

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3 years ago
sam has to climb to the top of the building for his firefighter training. he doesn’t know how high it is. he is 6ft y’all and hi
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The height of building is 35 feet

<em><u>Solution:</u></em>

Given that,

Sam is 6 feet tall and his shadow is 3.6 feet tall

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<em><u>To find: height of building</u></em>

We can solve this by setting up a ratio comparing the height of the building to the height of the Sam and shadow of the building to the shadow of the Sam

Let us consider,

h_b = height of building

h_m = height of Sam

s_b = shadow of building

s_m = shadow of Sam

Therefore,

\frac{\text {height of building}}{\text {shadow of building}}=\frac{\text {height of Sam}}{\text {shadow of Sam}}

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Substitute the values,

\begin{aligned}&\frac{h_{b}}{21}=\frac{6}{3.6}\\\\&h_{b}=\frac{6}{3.6} \times 21\\\\&h_{b}=35\end{aligned}

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Bad White [126]

Answer:

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Step-by-step explanation:

We have to find the product of -4 with 8 / - 1 / - 5 / 9.

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(Answer)

8 0
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