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3 years ago

A seamstress has 5.2 feet of ribbon. How many 6/10 feet strips of ribbon can she cut?

Mathematics

1 answer:

djverab [1.8K]3 years ago

3 0

5.2 / .6= 8.67 strips

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19×2 is the answer I think so

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Given a 13-card bridge hand has been dealt from a standard deck of 52 cards, what is the probability of having exactly 6 hearts

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2 years ago

Carmen deposited $6,000 into a savings account that earns 2.8% interest compounded annually. How much will she have in her accou

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To help Carmen find the total after 3 years

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2 years ago

Is 83 cm greater than or less than 1 m?

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2 years ago

Julian is using a biking app that compares his position to a simulated biker traveling Julian's target speed. When Julian is beh

zepelin [54]

Answer:

$\large \boxed{\text{11 km/h}}$

Step-by-step explanation:

1. The situation after 15 min:

(a) Distance travelled by simulated biker:

15 min =¼ h

$\text{Distance} = \dfrac{1}{4}\text{ h} \times \dfrac{\text{20 km}}{\text{1 h}} = \text{5 km}$

(b) Distance travelled by Julian

Julian is 2¼ km behind the biker. The distance he has travelled is (5 - 2¼) km

5 - 2¼ = 5 - ⁹/₄ = ²⁰/₄ - ⁹/₄ = ¹¹/₄ = 2¾

Julian has travelled 2¾ km in ¼ h.

2. Julian's average speed

$\text{Speed} = \dfrac{\text{Distance}}{\text{Time}} = \dfrac{2\frac{3}{4}\text{ km}}{\frac{1}{4}\text{ h}} =\dfrac{11}{4}\text{ km}\times \dfrac{4}{\text{1 h}} = \textbf{11 km/h}\\\\\text{Julian's average speed is $\large \boxed{\textbf{11 km/h}}$}$

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2 years ago

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