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3 years ago

Https://brainly.com/question/20878368

Mathematics

1 answer:

kodGreya [7K]3 years ago

4 0

Answer:

Step-by-step explanation:

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A farmer had 200 rows oh his field, He plowed 1/4 of them. How many rows did he plow? (Write the explanation and answer)

hjlf

Answer:

He plowed 50 rows.

Step-by-step explanation:

Use proportions

1/4 = x/200

then cross multiply to find x.

4x=200

Divide both sides by 4

x= 50

He plowed 50 rows.

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3 years ago

Read 2 more answers

Share 80 in ratio 5:3

bija089 [108]

5X+3X=80
8X=80
X=10
5×10=50
3×10=30
50 and 30

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3 years ago

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Jamie received £26 pocket money last week. He spent it as follows: 10% on sweets, 25% on magazines 15% on games How much did Jam

navik [9.2K]

Answer:

Total money left with Jamie = £13

Step-by-step explanation:

Jamie received pocket money = £26

He spent on sweets = 10% of total pocket money

Expense on magazines = 25% of the total money

Expense on games = 15% of the pocket money

Total expenditure on sweets, magazines and games = $\frac{10}{100}+\frac{25}{100}+\frac{15}{100}$

= $\frac{50}{100}$ Or 50% of the pocket money he received

Therefore, money left with Jamie = 50% of total money he received as pocket money

= $\frac{50}{100}\times 26$

= £13

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3 years ago

A body moves s metres in a time t seconds so that s = t3 – 3t2 + 8. Find:

aleksandr82 [10.1K]

Answer is<em> </em><em><u>3t²-6t</u></em>

<h3>Step-by-step Explanation:-</h3>

$s(t) = {t}^{3} - 3 {t}^{2} + 8$

Now we need to find velocity. The velocity is the first derivative of position, so let's find the derivative of s(t) :-

$s'(t) = v(t) = 3 {t}^{3 - 1} - 3 \times 2 {t}^{2 - 1}$

So,

$v(t) = 3 {t}^{2} - 6t$

Therefore, <u>v(t) = 3t²-6t</u>

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2 years ago

Evaluate the expression

Allisa [31]

Answer:

Step-by-step explanation:

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4 years ago