3 years ago

Could I have some help please

Mathematics

1 answer:

Contact [7]3 years ago

6 0

Sure what’s the question

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HELP CHECK MY ANSWERS, TY!

Romashka [77]

Answer:

That is correct

Step-by-step explanation:

When doing the math you can find that b and d are correct

8 0

3 years ago

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Find the equation of the circle whose center and radius are given.

trapecia [35]

(x – h)² + (y – k)² = r²

Fill in the numbers

(x – 7)² + (y +3)² = 49

6 0

3 years ago

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help pleaseeee it’s timed!!!

Kisachek [45]

Answer:

Step-by-step explanation:

The solution triangle is attached below :

Tonobtinnthe Angle formed, θ; we apply trigonometry ;

Using ;

Cos θ = Adjacent / hypotenus

Cos θ = 4 / 7

θ = Cos^-1(4/7)

θ = 55.15°

θ = 55°

3 0

2 years ago

Work out the circumference of a circle with radius 7.5 cm take pi to be 3.142

Elanso [62]

Answer:

47.13

Step-by-step explanation:

Circumfrence= 2 x pi x Radius

2 x 3.142 x 7.5 =47.13

5 0

3 years ago

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<img src="https://tex.z-dn.net/?f=%5Csqrt%7B%20x%5E%7B2%7D-10x%2B25%7D%2B25%2B12%5Csqrt%7Bx%7D%20%3D15%5Csqrt%7Bx%7D" id="TexFor

vodomira [7]

Step-by-step explanation:

$\sqrt{ x^{2}-10x+25}+25+12\sqrt{x} =15\sqrt{x} \\ \\ \therefore \: \sqrt{ x^{2}-10x+ {5}^{2} }+25 =15\sqrt{x} - 12\sqrt{x}\\ \\ \therefore \: \sqrt{( x - 5)^{2}}+25 =3\sqrt{x} \\ \\ \therefore \: x - 5+ 25 = 3 \sqrt{x} \\ \\ \therefore \: x + 20 = 3 \sqrt{x} \\ \\ squaring \: both \: sides \\ (x + 20)^{2} = ( {3 \sqrt{x} })^{2} \\ \therefore \: {x}^{2} + 40x + 400 = 9x \\ \therefore \: {x}^{2} + 40x + 400 - 9x = 0 \\ \therefore \: {x}^{2} + 31x + 400 = 0 \\$

8 0

3 years ago