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gizmo_the_mogwai [7]
3 years ago
5

Yesterday, the price of a loaf of bread at five supermarkets was $1.54, $1.69, $1.79, $1.57, and $1.71, but today each supermark

et raised its price by $0.05. What is today's mean price of a loaf of bread at the five supermarkets?
A. $1.71 B. $1.76 C. $1.81 D. $1.66
Mathematics
1 answer:
zheka24 [161]3 years ago
5 0
The answer is definately 
1.74 
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PLEASE PLEASE PLEASE HELP ME
lubasha [3.4K]

Answer:

CE = 17

Step-by-step explanation:

∵ m∠D = 90

∵ DK ⊥ CE

∴ m∠KDE = m∠KCD⇒Complement angles to angle CDK

In the two Δ KDE and KCD:

∵ m∠KDE = m∠KCD

∵ m∠DKE = m∠CKD

∵ DK is a common side

∴ Δ KDE is similar to ΔKCD

∴ \frac{KD}{KC}=\frac{DE}{CD}=\frac{KE}{KD}

∵ DE : CD = 5 : 3

∴ \frac{KD}{KC}=\frac{5}{3}

∴ KD = 5/3 KC

∵ KE = KC + 8

∵ \frac{KE}{KD}=\frac{5}{3}

∴ \frac{KC+8}{\frac{5}{3}KC }=\frac{5}{3}

∴ KC + 8 = \frac{25}{9}KC

∴ \frac{25}{9}KC - KC=8

∴ \frac{16}{9}KC=8

∴ KC = (8 × 9) ÷ 16 = 4.5

∴ KE = 8 + 4.5 = 12.5

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7 0
3 years ago
for 9x + 25= 88, deena wrote the situation "i bought some shirts at the store for 9$ each and received a 25$ discount. my total
MrRissso [65]
Deena has included the discount on the wrong side of the equation.
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3 years ago
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Find the sum of the first 40 terms of a geometric sequence where the first term is 16 and the common ratio is 1.1. 704 7,081.480
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Step-by-step explanation:

The nth term of a geometric progression can be determined by using the formula:

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T5=(40)(0.5)4

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8 0
3 years ago
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