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ANTONII [103]
3 years ago
10

A dress cost twice as much as a skirt. Mom bought 3 dresses and 2 skirts. She gave the cashier $1000 and received $300 in change

.How much did a dress cost?
Mathematics
1 answer:
defon3 years ago
4 0

Answer:

$175 = Cost of single dress

Step-by-step explanation:

It is provided that cost of dress is twice that of a skirt.

Let say, cost of skirt = x

Total things bought 3 dresses and 2 skirts.

Cost of single dress = 2x

Cost of all items = 3 \times 2x + 2 \times x = $1,000 - $300 = $700

6x + 2x = $700

x = 700/8 = $87.50

Cost of single dress = 2x = $87.50 \times 2 = $175

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3 years ago
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Verizon [17]

Answer:

<h2>-223,948</h2>

Step-by-step explanation:

The formula of a sum of terms of a gometric sequence:

S_n=a_1\cdot\dfrac{1-r^n}{1-r}

a₁ - first term

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We have

a_n=-4(6)^{n-1}

Calculate a₁. Put n = 1:

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4 years ago
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MakcuM [25]

Answer:

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Step-by-step explanation:

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