3 years ago

Pls help me with this

Mathematics

1 answer:

maxonik [38]3 years ago

8 0

I don’t see anything, can you type it out?

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Theo started to solve the quadratic equation

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Answer:

$x + 2 = \pm2$

Step-by-step explanation:

After Theo added to both sides of:

${(x + 2)}^{2} - 9 = - 5$

He got;

${(x + 2)}^{2} = 4$

Next he took the square root of both sides to get;

$x + 2 = \pm \sqrt{4}$

When Theo simplifies, he will obtain:

$x + 2 = \pm2$

Therefore the second option is correct.

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Kevin wants to buy an area rug for his living room. He would like the area rug to be no smaller that 48 square feet and no bigge

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4≤w≤6

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3 years ago

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3 years ago

in a right triangle, the 58cm hypotenuse makes a 51 angle with one of the legs. rounded to two decimals places, how long is that

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Answer:

36.50

To two decimal places

Step-by-step explanation:

The hypothenuse side in a right angle triangle has 58cm. While the angle touching one of its leg is 51°. How long is that leg.

From the right angled triangle, the size of the leg touching the hypothenuse is the adjacent side of the triangle, hence in trigonometry, the cosine rule is used, because it involves the adjacent and the hypotenuse.

Cos 51°=x/58

Let the size of the leg be x

Making x the subject

x=58(Cos51°)

x=36.500058

Correct to two decimal place

x=36.50

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3 years ago