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2 years ago

Find the difference between (x+7) & (3x+4)

Mathematics

1 answer:

KiRa [710]2 years ago

6 0

(x + 7) - (3x + 4) = x + 7 - 3x - 4 = (x - 3x) + (7 - 4) = -2x + 3

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3 cos A = 4 sin A find a) cos A b) 3-cot2 A+ cosec2A

Lady_Fox [76]

Answer:

a). cosA = 4/5

b).

$3 - cot {}^{2} a \: + cosec {}^{2} a \: = 0$

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2 years ago

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What is m∠A? Help please this is overdue

Talja [164]

Can you show the multiple choice one

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2 years ago

Share £405 in the ratio 4:11

Advocard [28]

I think the answer to your question is 15 hope this helps

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2 years ago

I don’t understand how to find the dimension, Need help :c

slava [35]

Width = W

Length = 2 times the width plus 3 feet = 2W + 3

Area of triangle A = L * W

A = W (2W + 3)

20 = 2W^2 + 3W

2W^2 + 3W - 20 = 0

(W + 4) (2W - 5) = 0

W + 4 = 0; W = - 4 (width cannot be negative, excluded)

2W - 5 = 0

2W = 5

W = 2.5

L = 2W + 3 = 2(2.5) + 3 = 8

Answer:

Width = 2.5 feet and Length = 8 feet

Hope it helps.

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2 years ago

According to the United States Census Bureau, on September 11, 2014, the population of the United States was increasing by 11 pe

Papessa [141]

Answer:

317,988,000

Step-by-step explanation:

We have been given that according to the United States Census Bureau, on September 11, 2014, the population of the United States was increasing by 11 people every 12 seconds.

Let us find number of people increased in 1 minute as:

$11\times \frac{60}{12}=11\times 5 =55$

Now, we will convert 11 years into minutes and multiply by 55 to find increase in population in 11 years.

$\text{11 years}=11\text{ years}\times \frac{365\text{ days}}{\text{year}}\times \frac{24\text{ hours}}{\text{days}}\times \frac{60\text{ min}}{\text{hour}}$